./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB --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 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:31:29,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:31:29,313 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-27 23:31:29,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:31:29,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:31:29,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:31:29,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:31:29,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:31:29,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:31:29,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:31:29,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:31:29,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:31:29,368 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:31:29,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:31:29,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:31:29,369 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:31:29,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:31:29,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:31:29,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:31:29,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:31:29,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:31:29,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:31:29,370 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-27 23:31:29,371 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:31:29,371 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:31:29,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:31:29,371 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:31:29,371 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:31:29,371 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:31:29,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:31:29,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:31:29,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:29,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:31:29,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:31:29,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:31:29,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:29,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:31:29,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:31:29,373 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:31:29,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:31:29,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:31:29,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:31:29,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:31:29,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:31:29,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:31:29,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:31:29,374 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed [2024-11-27 23:31:29,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:31:29,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:31:29,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:31:29,704 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:31:29,704 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:31:29,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-11-27 23:31:32,871 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/data/24c27d670/dbf6d517104541b4bc88d360f3b19c91/FLAG835b08408 [2024-11-27 23:31:33,165 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:31:33,166 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-11-27 23:31:33,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/data/24c27d670/dbf6d517104541b4bc88d360f3b19c91/FLAG835b08408 [2024-11-27 23:31:33,191 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/data/24c27d670/dbf6d517104541b4bc88d360f3b19c91 [2024-11-27 23:31:33,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:31:33,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:31:33,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:31:33,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:31:33,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:31:33,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,202 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3727bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33, skipping insertion in model container [2024-11-27 23:31:33,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,235 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:31:33,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:31:33,689 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:31:33,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:31:33,807 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:31:33,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33 WrapperNode [2024-11-27 23:31:33,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:31:33,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:31:33,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:31:33,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:31:33,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,857 INFO L138 Inliner]: procedures = 166, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2024-11-27 23:31:33,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:31:33,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:31:33,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:31:33,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:31:33,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,881 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:31:33,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:31:33,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:31:33,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:31:33,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (1/1) ... [2024-11-27 23:31:33,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:33,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:33,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:33,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5afa225-f459-4dc1-91fa-00ac3f446dee/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:31:33,984 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-27 23:31:33,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-27 23:31:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 23:31:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 23:31:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:31:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-27 23:31:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 23:31:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 23:31:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:31:33,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:31:33,991 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:31:34,106 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:31:34,107 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:31:34,280 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:31:34,280 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:31:34,329 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:31:34,330 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-27 23:31:34,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:31:34 BoogieIcfgContainer [2024-11-27 23:31:34,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:31:34,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:31:34,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:31:34,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:31:34,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:31:33" (1/3) ... [2024-11-27 23:31:34,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498628da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:31:34, skipping insertion in model container [2024-11-27 23:31:34,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:33" (2/3) ... [2024-11-27 23:31:34,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498628da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:31:34, skipping insertion in model container [2024-11-27 23:31:34,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:31:34" (3/3) ... [2024-11-27 23:31:34,346 INFO L128 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2024-11-27 23:31:34,366 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:31:34,368 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 39_rand_lock_p0_vs.i that has 2 procedures, 70 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2024-11-27 23:31:34,368 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:31:34,482 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 23:31:34,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 73 transitions, 150 flow [2024-11-27 23:31:34,572 INFO L124 PetriNetUnfolderBase]: 4/81 cut-off events. [2024-11-27 23:31:34,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:31:34,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 4/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2024-11-27 23:31:34,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 73 transitions, 150 flow [2024-11-27 23:31:34,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 73 transitions, 150 flow [2024-11-27 23:31:34,607 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:31:34,622 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;@1ae6efbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:31:34,622 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-27 23:31:34,637 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:31:34,637 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2024-11-27 23:31:34,637 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:31:34,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:34,638 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:34,639 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:31:34,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1825193720, now seen corresponding path program 1 times [2024-11-27 23:31:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561140936] [2024-11-27 23:31:34,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:34,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:34,782 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:34,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:31:34,826 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:31:34,827 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-27 23:31:34,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-11-27 23:31:34,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-11-27 23:31:34,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-11-27 23:31:34,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-11-27 23:31:34,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-11-27 23:31:34,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-11-27 23:31:34,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:31:34,833 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-27 23:31:34,838 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 23:31:34,838 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-27 23:31:34,908 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 23:31:34,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 118 transitions, 246 flow [2024-11-27 23:31:34,993 INFO L124 PetriNetUnfolderBase]: 7/136 cut-off events. [2024-11-27 23:31:34,993 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:31:34,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 136 events. 7/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 199 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2024-11-27 23:31:34,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 118 transitions, 246 flow [2024-11-27 23:31:35,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 246 flow [2024-11-27 23:31:35,002 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:31:35,002 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;@1ae6efbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:31:35,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-27 23:31:35,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:31:35,023 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-11-27 23:31:35,023 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:31:35,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:35,024 INFO L206 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] [2024-11-27 23:31:35,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-27 23:31:35,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:35,025 INFO L85 PathProgramCache]: Analyzing trace with hash 147240477, now seen corresponding path program 1 times [2024-11-27 23:31:35,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:35,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729638102] [2024-11-27 23:31:35,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:35,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:35,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729638102] [2024-11-27 23:31:35,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729638102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:35,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:35,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 23:31:35,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245044293] [2024-11-27 23:31:35,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:35,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:31:35,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:35,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:31:35,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:31:35,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 118 [2024-11-27 23:31:35,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 246 flow. Second operand has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:35,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:35,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 118 [2024-11-27 23:31:35,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:35,343 INFO L124 PetriNetUnfolderBase]: 27/349 cut-off events. [2024-11-27 23:31:35,343 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-27 23:31:35,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 349 events. 27/349 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1315 event pairs, 20 based on Foata normal form. 39/370 useless extension candidates. Maximal degree in co-relation 255. Up to 51 conditions per place. [2024-11-27 23:31:35,350 INFO L140 encePairwiseOnDemand]: 110/118 looper letters, 10 selfloop transitions, 0 changer transitions 0/107 dead transitions. [2024-11-27 23:31:35,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 107 transitions, 244 flow [2024-11-27 23:31:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:31:35,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-27 23:31:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 218 transitions. [2024-11-27 23:31:35,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.923728813559322 [2024-11-27 23:31:35,369 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 246 flow. Second operand 2 states and 218 transitions. [2024-11-27 23:31:35,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 107 transitions, 244 flow [2024-11-27 23:31:35,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 244 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:31:35,380 INFO L231 Difference]: Finished difference. Result has 111 places, 107 transitions, 224 flow [2024-11-27 23:31:35,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=224, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2024-11-27 23:31:35,387 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -7 predicate places. [2024-11-27 23:31:35,387 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 224 flow [2024-11-27 23:31:35,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:35,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:35,388 INFO L206 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] [2024-11-27 23:31:35,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:31:35,392 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-27 23:31:35,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:35,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1020652192, now seen corresponding path program 1 times [2024-11-27 23:31:35,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:35,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640409447] [2024-11-27 23:31:35,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:35,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:35,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640409447] [2024-11-27 23:31:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640409447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:35,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:35,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:31:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243768350] [2024-11-27 23:31:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:35,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:31:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:35,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:31:35,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:31:35,519 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 118 [2024-11-27 23:31:35,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:35,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:35,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 118 [2024-11-27 23:31:35,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:35,693 INFO L124 PetriNetUnfolderBase]: 64/537 cut-off events. [2024-11-27 23:31:35,694 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-27 23:31:35,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 537 events. 64/537 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2601 event pairs, 20 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 688. Up to 80 conditions per place. [2024-11-27 23:31:35,701 INFO L140 encePairwiseOnDemand]: 108/118 looper letters, 21 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2024-11-27 23:31:35,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 120 transitions, 313 flow [2024-11-27 23:31:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:31:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:31:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2024-11-27 23:31:35,704 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.884180790960452 [2024-11-27 23:31:35,704 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 224 flow. Second operand 3 states and 313 transitions. [2024-11-27 23:31:35,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 120 transitions, 313 flow [2024-11-27 23:31:35,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 120 transitions, 313 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:31:35,708 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 292 flow [2024-11-27 23:31:35,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2024-11-27 23:31:35,709 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2024-11-27 23:31:35,709 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 292 flow [2024-11-27 23:31:35,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:35,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:35,710 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:35,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:31:35,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-27 23:31:35,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1547291342, now seen corresponding path program 1 times [2024-11-27 23:31:35,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:35,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979471729] [2024-11-27 23:31:35,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:35,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:35,733 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:35,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:31:35,748 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:31:35,748 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-27 23:31:35,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-27 23:31:35,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-27 23:31:35,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-27 23:31:35,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-27 23:31:35,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-27 23:31:35,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-27 23:31:35,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-27 23:31:35,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-27 23:31:35,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-27 23:31:35,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:31:35,750 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-27 23:31:35,751 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 23:31:35,751 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-27 23:31:35,809 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 23:31:35,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 344 flow [2024-11-27 23:31:35,851 INFO L124 PetriNetUnfolderBase]: 10/191 cut-off events. [2024-11-27 23:31:35,851 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-27 23:31:35,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 191 events. 10/191 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 431 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2024-11-27 23:31:35,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 344 flow [2024-11-27 23:31:35,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 163 transitions, 344 flow [2024-11-27 23:31:35,857 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:31:35,858 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;@1ae6efbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:31:35,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-27 23:31:35,865 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:31:35,866 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2024-11-27 23:31:35,866 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:31:35,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:35,866 INFO L206 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] [2024-11-27 23:31:35,867 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-27 23:31:35,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2142011825, now seen corresponding path program 1 times [2024-11-27 23:31:35,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:35,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477961003] [2024-11-27 23:31:35,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:35,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:35,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:35,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477961003] [2024-11-27 23:31:35,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477961003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:35,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:35,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 23:31:35,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099241073] [2024-11-27 23:31:35,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:35,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:31:35,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:35,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:31:35,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:31:35,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 163 [2024-11-27 23:31:35,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 163 transitions, 344 flow. Second operand has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:35,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:35,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 163 [2024-11-27 23:31:35,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:36,364 INFO L124 PetriNetUnfolderBase]: 253/1865 cut-off events. [2024-11-27 23:31:36,366 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-27 23:31:36,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 1865 events. 253/1865 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14517 event pairs, 220 based on Foata normal form. 214/1976 useless extension candidates. Maximal degree in co-relation 537. Up to 376 conditions per place. [2024-11-27 23:31:36,381 INFO L140 encePairwiseOnDemand]: 152/163 looper letters, 15 selfloop transitions, 0 changer transitions 0/149 dead transitions. [2024-11-27 23:31:36,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 149 transitions, 346 flow [2024-11-27 23:31:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:31:36,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-27 23:31:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 300 transitions. [2024-11-27 23:31:36,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9202453987730062 [2024-11-27 23:31:36,385 INFO L175 Difference]: Start difference. First operand has 163 places, 163 transitions, 344 flow. Second operand 2 states and 300 transitions. [2024-11-27 23:31:36,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 149 transitions, 346 flow [2024-11-27 23:31:36,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 149 transitions, 344 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-27 23:31:36,392 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 314 flow [2024-11-27 23:31:36,393 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=314, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2024-11-27 23:31:36,396 INFO L279 CegarLoopForPetriNet]: 163 programPoint places, -9 predicate places. [2024-11-27 23:31:36,396 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 314 flow [2024-11-27 23:31:36,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:36,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:36,396 INFO L206 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] [2024-11-27 23:31:36,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:31:36,397 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-27 23:31:36,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:36,397 INFO L85 PathProgramCache]: Analyzing trace with hash -296723212, now seen corresponding path program 1 times [2024-11-27 23:31:36,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:36,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651992535] [2024-11-27 23:31:36,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:36,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:36,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:36,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651992535] [2024-11-27 23:31:36,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651992535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:36,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:36,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:31:36,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815025573] [2024-11-27 23:31:36,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:36,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:31:36,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:36,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:31:36,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:31:36,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 163 [2024-11-27 23:31:36,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:36,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:36,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 163 [2024-11-27 23:31:36,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:37,547 INFO L124 PetriNetUnfolderBase]: 1172/5313 cut-off events. [2024-11-27 23:31:37,548 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-11-27 23:31:37,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7345 conditions, 5313 events. 1172/5313 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 51681 event pairs, 427 based on Foata normal form. 0/5049 useless extension candidates. Maximal degree in co-relation 7339. Up to 1116 conditions per place. [2024-11-27 23:31:37,590 INFO L140 encePairwiseOnDemand]: 148/163 looper letters, 32 selfloop transitions, 12 changer transitions 0/169 dead transitions. [2024-11-27 23:31:37,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 169 transitions, 452 flow [2024-11-27 23:31:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:31:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:31:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2024-11-27 23:31:37,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8813905930470347 [2024-11-27 23:31:37,593 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 314 flow. Second operand 3 states and 431 transitions. [2024-11-27 23:31:37,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 169 transitions, 452 flow [2024-11-27 23:31:37,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 169 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:31:37,601 INFO L231 Difference]: Finished difference. Result has 158 places, 161 transitions, 416 flow [2024-11-27 23:31:37,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=158, PETRI_TRANSITIONS=161} [2024-11-27 23:31:37,602 INFO L279 CegarLoopForPetriNet]: 163 programPoint places, -5 predicate places. [2024-11-27 23:31:37,602 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 161 transitions, 416 flow [2024-11-27 23:31:37,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:37,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:37,602 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:37,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:31:37,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-27 23:31:37,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1519002686, now seen corresponding path program 1 times [2024-11-27 23:31:37,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:37,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748847052] [2024-11-27 23:31:37,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:37,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:37,639 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:37,669 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:31:37,669 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:31:37,669 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-27 23:31:37,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-11-27 23:31:37,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-11-27 23:31:37,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-11-27 23:31:37,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-11-27 23:31:37,671 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-11-27 23:31:37,671 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-11-27 23:31:37,671 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-11-27 23:31:37,671 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-11-27 23:31:37,671 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-11-27 23:31:37,673 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-11-27 23:31:37,673 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-11-27 23:31:37,673 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-11-27 23:31:37,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:31:37,673 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-27 23:31:37,674 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 23:31:37,675 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-27 23:31:37,754 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 23:31:37,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 208 transitions, 444 flow [2024-11-27 23:31:37,820 INFO L124 PetriNetUnfolderBase]: 13/246 cut-off events. [2024-11-27 23:31:37,820 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-27 23:31:37,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 246 events. 13/246 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 674 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 199. Up to 10 conditions per place. [2024-11-27 23:31:37,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 208 transitions, 444 flow [2024-11-27 23:31:37,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 208 transitions, 444 flow [2024-11-27 23:31:37,827 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:31:37,827 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;@1ae6efbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:31:37,827 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-27 23:31:37,834 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:31:37,834 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-11-27 23:31:37,834 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:31:37,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:37,834 INFO L206 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] [2024-11-27 23:31:37,834 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 23:31:37,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1716370511, now seen corresponding path program 1 times [2024-11-27 23:31:37,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:37,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711786374] [2024-11-27 23:31:37,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:37,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:37,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:37,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711786374] [2024-11-27 23:31:37,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711786374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:37,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:37,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 23:31:37,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891311177] [2024-11-27 23:31:37,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:37,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:31:37,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:37,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:31:37,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:31:37,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 208 [2024-11-27 23:31:37,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 208 transitions, 444 flow. Second operand has 2 states, 2 states have (on average 175.0) internal successors, (350), 2 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:37,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:37,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 208 [2024-11-27 23:31:37,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:39,695 INFO L124 PetriNetUnfolderBase]: 1859/9901 cut-off events. [2024-11-27 23:31:39,695 INFO L125 PetriNetUnfolderBase]: For 1548/1548 co-relation queries the response was YES. [2024-11-27 23:31:39,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13149 conditions, 9901 events. 1859/9901 cut-off events. For 1548/1548 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 110841 event pairs, 1720 based on Foata normal form. 1185/10561 useless extension candidates. Maximal degree in co-relation 2373. Up to 2501 conditions per place. [2024-11-27 23:31:39,870 INFO L140 encePairwiseOnDemand]: 194/208 looper letters, 20 selfloop transitions, 0 changer transitions 0/191 dead transitions. [2024-11-27 23:31:39,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 191 transitions, 450 flow [2024-11-27 23:31:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:31:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-27 23:31:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 382 transitions. [2024-11-27 23:31:39,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9182692307692307 [2024-11-27 23:31:39,872 INFO L175 Difference]: Start difference. First operand has 208 places, 208 transitions, 444 flow. Second operand 2 states and 382 transitions. [2024-11-27 23:31:39,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 191 transitions, 450 flow [2024-11-27 23:31:39,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 191 transitions, 444 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-27 23:31:39,880 INFO L231 Difference]: Finished difference. Result has 197 places, 191 transitions, 404 flow [2024-11-27 23:31:39,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=404, PETRI_PLACES=197, PETRI_TRANSITIONS=191} [2024-11-27 23:31:39,882 INFO L279 CegarLoopForPetriNet]: 208 programPoint places, -11 predicate places. [2024-11-27 23:31:39,882 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 191 transitions, 404 flow [2024-11-27 23:31:39,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 175.0) internal successors, (350), 2 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:39,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:39,882 INFO L206 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] [2024-11-27 23:31:39,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:31:39,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 23:31:39,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:39,883 INFO L85 PathProgramCache]: Analyzing trace with hash 739999220, now seen corresponding path program 1 times [2024-11-27 23:31:39,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:39,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904967393] [2024-11-27 23:31:39,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:39,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904967393] [2024-11-27 23:31:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904967393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:39,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:39,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:31:39,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519967041] [2024-11-27 23:31:39,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:39,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:31:39,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:39,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:31:39,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:31:39,974 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 208 [2024-11-27 23:31:39,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 191 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:39,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:39,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 208 [2024-11-27 23:31:39,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:46,420 INFO L124 PetriNetUnfolderBase]: 15875/52949 cut-off events. [2024-11-27 23:31:46,421 INFO L125 PetriNetUnfolderBase]: For 2260/2260 co-relation queries the response was YES. [2024-11-27 23:31:46,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76766 conditions, 52949 events. 15875/52949 cut-off events. For 2260/2260 co-relation queries the response was YES. Maximal size of possible extension queue 1490. Compared 710938 event pairs, 6167 based on Foata normal form. 0/50076 useless extension candidates. Maximal degree in co-relation 76759. Up to 13336 conditions per place. [2024-11-27 23:31:46,928 INFO L140 encePairwiseOnDemand]: 188/208 looper letters, 43 selfloop transitions, 16 changer transitions 0/218 dead transitions. [2024-11-27 23:31:46,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 218 transitions, 591 flow [2024-11-27 23:31:46,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:31:46,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:31:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2024-11-27 23:31:46,931 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8798076923076923 [2024-11-27 23:31:46,931 INFO L175 Difference]: Start difference. First operand has 197 places, 191 transitions, 404 flow. Second operand 3 states and 549 transitions. [2024-11-27 23:31:46,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 218 transitions, 591 flow [2024-11-27 23:31:46,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 591 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:31:46,938 INFO L231 Difference]: Finished difference. Result has 201 places, 207 transitions, 540 flow [2024-11-27 23:31:46,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=201, PETRI_TRANSITIONS=207} [2024-11-27 23:31:46,941 INFO L279 CegarLoopForPetriNet]: 208 programPoint places, -7 predicate places. [2024-11-27 23:31:46,942 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 207 transitions, 540 flow [2024-11-27 23:31:46,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:46,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:46,942 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:46,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:31:46,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 23:31:46,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1470996056, now seen corresponding path program 1 times [2024-11-27 23:31:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:46,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181599579] [2024-11-27 23:31:46,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:46,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:46,974 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:47,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:31:47,011 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:31:47,012 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-27 23:31:47,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-11-27 23:31:47,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-11-27 23:31:47,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-11-27 23:31:47,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-11-27 23:31:47,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-11-27 23:31:47,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-11-27 23:31:47,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-11-27 23:31:47,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-11-27 23:31:47,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-11-27 23:31:47,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-11-27 23:31:47,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-11-27 23:31:47,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-11-27 23:31:47,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-11-27 23:31:47,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-11-27 23:31:47,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-11-27 23:31:47,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:31:47,014 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-27 23:31:47,015 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 23:31:47,015 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-27 23:31:47,095 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 23:31:47,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 253 transitions, 546 flow [2024-11-27 23:31:47,154 INFO L124 PetriNetUnfolderBase]: 16/301 cut-off events. [2024-11-27 23:31:47,154 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-27 23:31:47,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 301 events. 16/301 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 952 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 259. Up to 12 conditions per place. [2024-11-27 23:31:47,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 253 transitions, 546 flow [2024-11-27 23:31:47,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 253 transitions, 546 flow [2024-11-27 23:31:47,164 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:31:47,165 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;@1ae6efbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:31:47,165 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-27 23:31:47,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:31:47,170 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-11-27 23:31:47,170 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:31:47,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:47,170 INFO L206 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] [2024-11-27 23:31:47,170 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2024-11-27 23:31:47,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:47,171 INFO L85 PathProgramCache]: Analyzing trace with hash 660577561, now seen corresponding path program 1 times [2024-11-27 23:31:47,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:47,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90087389] [2024-11-27 23:31:47,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:47,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:47,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:47,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90087389] [2024-11-27 23:31:47,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90087389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:47,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:47,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 23:31:47,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386241057] [2024-11-27 23:31:47,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:47,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:31:47,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:47,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:31:47,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:31:47,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 253 [2024-11-27 23:31:47,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 253 transitions, 546 flow. Second operand has 2 states, 2 states have (on average 212.0) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:47,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:47,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 253 [2024-11-27 23:31:47,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:54,310 INFO L124 PetriNetUnfolderBase]: 12349/52573 cut-off events. [2024-11-27 23:31:54,310 INFO L125 PetriNetUnfolderBase]: For 11651/11651 co-relation queries the response was YES. [2024-11-27 23:31:54,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72697 conditions, 52573 events. 12349/52573 cut-off events. For 11651/11651 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 748751 event pairs, 11720 based on Foata normal form. 6628/56571 useless extension candidates. Maximal degree in co-relation 13284. Up to 15626 conditions per place. [2024-11-27 23:31:55,090 INFO L140 encePairwiseOnDemand]: 236/253 looper letters, 25 selfloop transitions, 0 changer transitions 0/233 dead transitions. [2024-11-27 23:31:55,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 233 transitions, 556 flow [2024-11-27 23:31:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:31:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-27 23:31:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 464 transitions. [2024-11-27 23:31:55,094 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9169960474308301 [2024-11-27 23:31:55,094 INFO L175 Difference]: Start difference. First operand has 253 places, 253 transitions, 546 flow. Second operand 2 states and 464 transitions. [2024-11-27 23:31:55,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 233 transitions, 556 flow [2024-11-27 23:31:55,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 233 transitions, 544 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-27 23:31:55,110 INFO L231 Difference]: Finished difference. Result has 240 places, 233 transitions, 494 flow [2024-11-27 23:31:55,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=494, PETRI_PLACES=240, PETRI_TRANSITIONS=233} [2024-11-27 23:31:55,111 INFO L279 CegarLoopForPetriNet]: 253 programPoint places, -13 predicate places. [2024-11-27 23:31:55,111 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 233 transitions, 494 flow [2024-11-27 23:31:55,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 212.0) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:55,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:55,112 INFO L206 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] [2024-11-27 23:31:55,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:31:55,114 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2024-11-27 23:31:55,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:55,114 INFO L85 PathProgramCache]: Analyzing trace with hash 126881692, now seen corresponding path program 1 times [2024-11-27 23:31:55,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:55,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725192043] [2024-11-27 23:31:55,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:55,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:55,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725192043] [2024-11-27 23:31:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725192043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:55,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:55,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:31:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789619861] [2024-11-27 23:31:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:55,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:31:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:55,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:31:55,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:31:55,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 253 [2024-11-27 23:31:55,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 233 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:55,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:55,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 253 [2024-11-27 23:31:55,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand