./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.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_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/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_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/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_062c7341-5c1e-4b19-b306-47ed30cd93fb/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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:23:09,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:23:09,643 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-27 23:23:09,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:23:09,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:23:09,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:23:09,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:23:09,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:23:09,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:23:09,677 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:23:09,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:23:09,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:23:09,678 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:23:09,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:23:09,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:23:09,678 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:23:09,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:23:09,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:23:09,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:23:09,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:23:09,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:23:09,679 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:23:09,679 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-27 23:23:09,679 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:23:09,680 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:23:09,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:23:09,680 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:23:09,680 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:23:09,680 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:23:09,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:09,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:09,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:09,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:23:09,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:09,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:09,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:09,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:23:09,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:23:09,682 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:23:09,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:23:09,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:23:09,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:23:09,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:23:09,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:23:09,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:23:09,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:23:09,683 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_062c7341-5c1e-4b19-b306-47ed30cd93fb/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 -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2024-11-27 23:23:09,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:23:09,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:23:09,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:23:09,940 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:23:09,940 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:23:09,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-11-27 23:23:12,943 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/data/14a048da4/b2d90778d70744239286a569deee2ed5/FLAGe1945b8c3 [2024-11-27 23:23:13,301 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:23:13,302 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-11-27 23:23:13,318 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/data/14a048da4/b2d90778d70744239286a569deee2ed5/FLAGe1945b8c3 [2024-11-27 23:23:13,336 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/data/14a048da4/b2d90778d70744239286a569deee2ed5 [2024-11-27 23:23:13,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:23:13,341 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:23:13,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:13,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:23:13,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:23:13,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:13,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1419ac1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13, skipping insertion in model container [2024-11-27 23:23:13,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:13,392 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:23:13,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:13,784 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:23:13,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:13,912 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:23:13,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13 WrapperNode [2024-11-27 23:23:13,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:13,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:13,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:23:13,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:23:13,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:13,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:13,982 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 164 [2024-11-27 23:23:13,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:13,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:23:13,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:23:13,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:23:13,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:13,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:14,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:14,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:14,021 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:14,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:14,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:14,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:14,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:14,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:23:14,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:23:14,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:23:14,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:23:14,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (1/1) ... [2024-11-27 23:23:14,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:14,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:14,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:23:14,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062c7341-5c1e-4b19-b306-47ed30cd93fb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:23:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-27 23:23:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-27 23:23:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 23:23:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:23:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:23:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-27 23:23:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-27 23:23:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:23:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-27 23:23:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 23:23:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:23:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:23:14,110 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 23:23:14,266 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:23:14,268 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:23:14,836 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:23:14,836 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:23:14,887 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:23:14,887 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-27 23:23:14,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:14 BoogieIcfgContainer [2024-11-27 23:23:14,888 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:23:14,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:23:14,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:23:14,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:23:14,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:23:13" (1/3) ... [2024-11-27 23:23:14,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4016716a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:14, skipping insertion in model container [2024-11-27 23:23:14,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:13" (2/3) ... [2024-11-27 23:23:14,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4016716a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:14, skipping insertion in model container [2024-11-27 23:23:14,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:14" (3/3) ... [2024-11-27 23:23:14,897 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2024-11-27 23:23:14,913 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:23:14,915 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_51-mutexptr_racefree.i that has 2 procedures, 237 locations, 1 initial locations, 6 loop locations, and 14 error locations. [2024-11-27 23:23:14,915 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:23:15,048 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-27 23:23:15,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 250 transitions, 507 flow [2024-11-27 23:23:15,333 INFO L124 PetriNetUnfolderBase]: 19/324 cut-off events. [2024-11-27 23:23:15,336 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:23:15,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 324 events. 19/324 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 851 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 166. Up to 4 conditions per place. [2024-11-27 23:23:15,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 250 transitions, 507 flow [2024-11-27 23:23:15,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 250 transitions, 507 flow [2024-11-27 23:23:15,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:23:15,386 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;@360eec00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:23:15,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-27 23:23:15,416 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:23:15,416 INFO L124 PetriNetUnfolderBase]: 0/87 cut-off events. [2024-11-27 23:23:15,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:23:15,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:15,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:15,418 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-11-27 23:23:15,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:15,426 INFO L85 PathProgramCache]: Analyzing trace with hash 77506736, now seen corresponding path program 1 times [2024-11-27 23:23:15,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:15,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933099252] [2024-11-27 23:23:15,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:15,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:15,788 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 23:23:15,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:15,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933099252] [2024-11-27 23:23:15,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933099252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:15,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:15,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:23:15,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648062776] [2024-11-27 23:23:15,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:15,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:15,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:15,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:15,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:15,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 250 [2024-11-27 23:23:15,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 250 transitions, 507 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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 23:23:15,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:15,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 250 [2024-11-27 23:23:15,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:16,250 INFO L124 PetriNetUnfolderBase]: 73/901 cut-off events. [2024-11-27 23:23:16,250 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-27 23:23:16,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 901 events. 73/901 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4427 event pairs, 72 based on Foata normal form. 84/897 useless extension candidates. Maximal degree in co-relation 899. Up to 175 conditions per place. [2024-11-27 23:23:16,262 INFO L140 encePairwiseOnDemand]: 235/250 looper letters, 22 selfloop transitions, 2 changer transitions 0/235 dead transitions. [2024-11-27 23:23:16,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 235 transitions, 525 flow [2024-11-27 23:23:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2024-11-27 23:23:16,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8973333333333333 [2024-11-27 23:23:16,288 INFO L175 Difference]: Start difference. First operand has 240 places, 250 transitions, 507 flow. Second operand 3 states and 673 transitions. [2024-11-27 23:23:16,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 235 transitions, 525 flow [2024-11-27 23:23:16,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 235 transitions, 525 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:16,305 INFO L231 Difference]: Finished difference. Result has 239 places, 235 transitions, 481 flow [2024-11-27 23:23:16,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=239, PETRI_TRANSITIONS=235} [2024-11-27 23:23:16,315 INFO L279 CegarLoopForPetriNet]: 240 programPoint places, -1 predicate places. [2024-11-27 23:23:16,315 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 235 transitions, 481 flow [2024-11-27 23:23:16,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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 23:23:16,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:16,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:16,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:23:16,317 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-11-27 23:23:16,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1478918958, now seen corresponding path program 1 times [2024-11-27 23:23:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:16,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911421651] [2024-11-27 23:23:16,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:16,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:16,604 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 23:23:16,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:16,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911421651] [2024-11-27 23:23:16,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911421651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:16,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:16,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:23:16,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014506208] [2024-11-27 23:23:16,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:16,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:16,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:16,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:16,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:16,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 250 [2024-11-27 23:23:16,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 235 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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 23:23:16,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:16,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 250 [2024-11-27 23:23:16,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:16,873 INFO L124 PetriNetUnfolderBase]: 48/724 cut-off events. [2024-11-27 23:23:16,873 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-27 23:23:16,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 724 events. 48/724 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3131 event pairs, 0 based on Foata normal form. 1/647 useless extension candidates. Maximal degree in co-relation 752. Up to 108 conditions per place. [2024-11-27 23:23:16,878 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 22 selfloop transitions, 2 changer transitions 0/241 dead transitions. [2024-11-27 23:23:16,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 241 transitions, 541 flow [2024-11-27 23:23:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2024-11-27 23:23:16,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9093333333333333 [2024-11-27 23:23:16,883 INFO L175 Difference]: Start difference. First operand has 239 places, 235 transitions, 481 flow. Second operand 3 states and 682 transitions. [2024-11-27 23:23:16,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 241 transitions, 541 flow [2024-11-27 23:23:16,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 241 transitions, 537 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:23:16,896 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 485 flow [2024-11-27 23:23:16,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=485, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2024-11-27 23:23:16,898 INFO L279 CegarLoopForPetriNet]: 240 programPoint places, 0 predicate places. [2024-11-27 23:23:16,898 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 485 flow [2024-11-27 23:23:16,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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 23:23:16,899 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:16,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:16,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:23:16,900 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-11-27 23:23:16,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:16,903 INFO L85 PathProgramCache]: Analyzing trace with hash -505644658, now seen corresponding path program 1 times [2024-11-27 23:23:16,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:16,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629066778] [2024-11-27 23:23:16,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:16,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:18,087 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 23:23:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:18,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629066778] [2024-11-27 23:23:18,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629066778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:18,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:18,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:23:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447283768] [2024-11-27 23:23:18,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:18,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:18,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:18,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:18,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:18,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 250 [2024-11-27 23:23:18,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 485 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 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 23:23:18,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:18,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 250 [2024-11-27 23:23:18,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:19,291 INFO L124 PetriNetUnfolderBase]: 578/2377 cut-off events. [2024-11-27 23:23:19,291 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-27 23:23:19,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 2377 events. 578/2377 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 16639 event pairs, 343 based on Foata normal form. 0/2161 useless extension candidates. Maximal degree in co-relation 3507. Up to 1071 conditions per place. [2024-11-27 23:23:19,304 INFO L140 encePairwiseOnDemand]: 227/250 looper letters, 73 selfloop transitions, 70 changer transitions 0/328 dead transitions. [2024-11-27 23:23:19,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 328 transitions, 960 flow [2024-11-27 23:23:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:19,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1266 transitions. [2024-11-27 23:23:19,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.844 [2024-11-27 23:23:19,308 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 485 flow. Second operand 6 states and 1266 transitions. [2024-11-27 23:23:19,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 328 transitions, 960 flow [2024-11-27 23:23:19,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 328 transitions, 954 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:23:19,321 INFO L231 Difference]: Finished difference. Result has 248 places, 304 transitions, 944 flow [2024-11-27 23:23:19,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=944, PETRI_PLACES=248, PETRI_TRANSITIONS=304} [2024-11-27 23:23:19,323 INFO L279 CegarLoopForPetriNet]: 240 programPoint places, 8 predicate places. [2024-11-27 23:23:19,323 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 304 transitions, 944 flow [2024-11-27 23:23:19,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 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 23:23:19,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:19,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:19,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:23:19,325 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-11-27 23:23:19,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash 283748133, now seen corresponding path program 1 times [2024-11-27 23:23:19,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:19,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861353285] [2024-11-27 23:23:19,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:19,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:19,421 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 23:23:19,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:19,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861353285] [2024-11-27 23:23:19,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861353285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:19,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:19,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:23:19,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807652707] [2024-11-27 23:23:19,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:19,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:19,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:19,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:19,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:19,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 250 [2024-11-27 23:23:19,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 304 transitions, 944 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 23:23:19,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:19,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 250 [2024-11-27 23:23:19,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:19,760 INFO L124 PetriNetUnfolderBase]: 260/1623 cut-off events. [2024-11-27 23:23:19,760 INFO L125 PetriNetUnfolderBase]: For 92/103 co-relation queries the response was YES. [2024-11-27 23:23:19,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2516 conditions, 1623 events. 260/1623 cut-off events. For 92/103 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10532 event pairs, 110 based on Foata normal form. 0/1519 useless extension candidates. Maximal degree in co-relation 2353. Up to 299 conditions per place. [2024-11-27 23:23:19,769 INFO L140 encePairwiseOnDemand]: 242/250 looper letters, 25 selfloop transitions, 2 changer transitions 0/300 dead transitions. [2024-11-27 23:23:19,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 300 transitions, 990 flow [2024-11-27 23:23:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2024-11-27 23:23:19,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.868 [2024-11-27 23:23:19,773 INFO L175 Difference]: Start difference. First operand has 248 places, 304 transitions, 944 flow. Second operand 3 states and 651 transitions. [2024-11-27 23:23:19,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 300 transitions, 990 flow [2024-11-27 23:23:19,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 300 transitions, 990 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:19,788 INFO L231 Difference]: Finished difference. Result has 245 places, 300 transitions, 946 flow [2024-11-27 23:23:19,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=946, PETRI_PLACES=245, PETRI_TRANSITIONS=300} [2024-11-27 23:23:19,789 INFO L279 CegarLoopForPetriNet]: 240 programPoint places, 5 predicate places. [2024-11-27 23:23:19,790 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 300 transitions, 946 flow [2024-11-27 23:23:19,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 23:23:19,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:19,791 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:19,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:23:19,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-11-27 23:23:19,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1901738221, now seen corresponding path program 1 times [2024-11-27 23:23:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:19,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508924539] [2024-11-27 23:23:19,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:23:19,840 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:23:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:23:19,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:23:19,919 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:23:19,919 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-27 23:23:19,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-27 23:23:19,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-27 23:23:19,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-27 23:23:19,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-27 23:23:19,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-27 23:23:19,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-27 23:23:19,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-27 23:23:19,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-27 23:23:19,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-27 23:23:19,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-27 23:23:19,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-27 23:23:19,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-27 23:23:19,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-27 23:23:19,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-27 23:23:19,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-27 23:23:19,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-27 23:23:19,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-27 23:23:19,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-27 23:23:19,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-27 23:23:19,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-27 23:23:19,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-27 23:23:19,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:23:19,925 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-27 23:23:19,927 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 23:23:19,927 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-27 23:23:19,993 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:23:20,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 327 transitions, 670 flow [2024-11-27 23:23:20,096 INFO L124 PetriNetUnfolderBase]: 34/503 cut-off events. [2024-11-27 23:23:20,096 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-27 23:23:20,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 503 events. 34/503 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1774 event pairs, 0 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 326. Up to 8 conditions per place. [2024-11-27 23:23:20,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 327 transitions, 670 flow [2024-11-27 23:23:20,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 327 transitions, 670 flow [2024-11-27 23:23:20,114 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:23:20,115 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;@360eec00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:23:20,115 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-27 23:23:20,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:23:20,127 INFO L124 PetriNetUnfolderBase]: 0/87 cut-off events. [2024-11-27 23:23:20,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:23:20,127 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:20,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:20,127 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-11-27 23:23:20,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:20,128 INFO L85 PathProgramCache]: Analyzing trace with hash 601472816, now seen corresponding path program 1 times [2024-11-27 23:23:20,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:20,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385922677] [2024-11-27 23:23:20,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:20,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:20,203 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 23:23:20,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:20,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385922677] [2024-11-27 23:23:20,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385922677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:20,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:20,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:23:20,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430119022] [2024-11-27 23:23:20,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:20,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:20,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:20,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:20,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 327 [2024-11-27 23:23:20,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 327 transitions, 670 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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 23:23:20,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:20,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 327 [2024-11-27 23:23:20,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:22,328 INFO L124 PetriNetUnfolderBase]: 1642/9394 cut-off events. [2024-11-27 23:23:22,329 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-11-27 23:23:22,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12127 conditions, 9394 events. 1642/9394 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 97583 event pairs, 1629 based on Foata normal form. 1315/9786 useless extension candidates. Maximal degree in co-relation 10772. Up to 2673 conditions per place. [2024-11-27 23:23:22,398 INFO L140 encePairwiseOnDemand]: 306/327 looper letters, 33 selfloop transitions, 2 changer transitions 0/306 dead transitions. [2024-11-27 23:23:22,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 306 transitions, 698 flow [2024-11-27 23:23:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 870 transitions. [2024-11-27 23:23:22,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8868501529051988 [2024-11-27 23:23:22,401 INFO L175 Difference]: Start difference. First operand has 312 places, 327 transitions, 670 flow. Second operand 3 states and 870 transitions. [2024-11-27 23:23:22,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 306 transitions, 698 flow [2024-11-27 23:23:22,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 306 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:22,407 INFO L231 Difference]: Finished difference. Result has 311 places, 306 transitions, 632 flow [2024-11-27 23:23:22,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=632, PETRI_PLACES=311, PETRI_TRANSITIONS=306} [2024-11-27 23:23:22,408 INFO L279 CegarLoopForPetriNet]: 312 programPoint places, -1 predicate places. [2024-11-27 23:23:22,408 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 306 transitions, 632 flow [2024-11-27 23:23:22,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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 23:23:22,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:22,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:22,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:23:22,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-11-27 23:23:22,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:22,410 INFO L85 PathProgramCache]: Analyzing trace with hash -844292267, now seen corresponding path program 1 times [2024-11-27 23:23:22,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:22,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022130161] [2024-11-27 23:23:22,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:22,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:22,488 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 23:23:22,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:22,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022130161] [2024-11-27 23:23:22,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022130161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:22,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:22,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:23:22,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276646744] [2024-11-27 23:23:22,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:22,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:22,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:22,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:22,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 327 [2024-11-27 23:23:22,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 306 transitions, 632 flow. Second operand has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 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 23:23:22,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:22,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 327 [2024-11-27 23:23:22,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:23,689 INFO L124 PetriNetUnfolderBase]: 788/5496 cut-off events. [2024-11-27 23:23:23,690 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-27 23:23:23,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6852 conditions, 5496 events. 788/5496 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 53302 event pairs, 348 based on Foata normal form. 1/4832 useless extension candidates. Maximal degree in co-relation 6755. Up to 1303 conditions per place. [2024-11-27 23:23:23,739 INFO L140 encePairwiseOnDemand]: 324/327 looper letters, 31 selfloop transitions, 2 changer transitions 0/313 dead transitions. [2024-11-27 23:23:23,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 313 transitions, 712 flow [2024-11-27 23:23:23,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 880 transitions. [2024-11-27 23:23:23,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8970438328236493 [2024-11-27 23:23:23,742 INFO L175 Difference]: Start difference. First operand has 311 places, 306 transitions, 632 flow. Second operand 3 states and 880 transitions. [2024-11-27 23:23:23,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 313 transitions, 712 flow [2024-11-27 23:23:23,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 313 transitions, 708 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:23:23,749 INFO L231 Difference]: Finished difference. Result has 312 places, 307 transitions, 640 flow [2024-11-27 23:23:23,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=640, PETRI_PLACES=312, PETRI_TRANSITIONS=307} [2024-11-27 23:23:23,752 INFO L279 CegarLoopForPetriNet]: 312 programPoint places, 0 predicate places. [2024-11-27 23:23:23,752 INFO L471 AbstractCegarLoop]: Abstraction has has 312 places, 307 transitions, 640 flow [2024-11-27 23:23:23,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 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 23:23:23,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:23,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:23,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:23:23,753 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-11-27 23:23:23,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:23,754 INFO L85 PathProgramCache]: Analyzing trace with hash 917204757, now seen corresponding path program 1 times [2024-11-27 23:23:23,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:23,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501974187] [2024-11-27 23:23:23,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:23,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:24,415 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 23:23:24,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:24,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501974187] [2024-11-27 23:23:24,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501974187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:24,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:24,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:23:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755070529] [2024-11-27 23:23:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:24,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:24,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:24,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:24,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:24,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 327 [2024-11-27 23:23:24,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 307 transitions, 640 flow. Second operand has 6 states, 6 states have (on average 235.5) internal successors, (1413), 6 states have internal predecessors, (1413), 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 23:23:24,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:24,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 327 [2024-11-27 23:23:24,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:35,777 INFO L124 PetriNetUnfolderBase]: 29144/72431 cut-off events. [2024-11-27 23:23:35,778 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2024-11-27 23:23:35,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118632 conditions, 72431 events. 29144/72431 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 843385 event pairs, 20506 based on Foata normal form. 0/66594 useless extension candidates. Maximal degree in co-relation 118337. Up to 40528 conditions per place. [2024-11-27 23:23:36,261 INFO L140 encePairwiseOnDemand]: 288/327 looper letters, 123 selfloop transitions, 135 changer transitions 0/490 dead transitions. [2024-11-27 23:23:36,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 490 transitions, 1532 flow [2024-11-27 23:23:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1661 transitions. [2024-11-27 23:23:36,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8465851172273191 [2024-11-27 23:23:36,272 INFO L175 Difference]: Start difference. First operand has 312 places, 307 transitions, 640 flow. Second operand 6 states and 1661 transitions. [2024-11-27 23:23:36,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 490 transitions, 1532 flow [2024-11-27 23:23:36,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 490 transitions, 1529 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:36,301 INFO L231 Difference]: Finished difference. Result has 321 places, 441 transitions, 1528 flow [2024-11-27 23:23:36,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1528, PETRI_PLACES=321, PETRI_TRANSITIONS=441} [2024-11-27 23:23:36,304 INFO L279 CegarLoopForPetriNet]: 312 programPoint places, 9 predicate places. [2024-11-27 23:23:36,304 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 441 transitions, 1528 flow [2024-11-27 23:23:36,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.5) internal successors, (1413), 6 states have internal predecessors, (1413), 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 23:23:36,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:36,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:36,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:23:36,306 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-11-27 23:23:36,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:36,306 INFO L85 PathProgramCache]: Analyzing trace with hash 267117729, now seen corresponding path program 1 times [2024-11-27 23:23:36,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:36,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866036891] [2024-11-27 23:23:36,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:36,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:36,389 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 23:23:36,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:36,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866036891] [2024-11-27 23:23:36,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866036891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:36,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:36,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:23:36,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294003291] [2024-11-27 23:23:36,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:36,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:36,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:36,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:36,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:36,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 327 [2024-11-27 23:23:36,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 441 transitions, 1528 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 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 23:23:36,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:36,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 327 [2024-11-27 23:23:36,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:43,804 INFO L124 PetriNetUnfolderBase]: 14862/50962 cut-off events. [2024-11-27 23:23:43,804 INFO L125 PetriNetUnfolderBase]: For 4753/5036 co-relation queries the response was YES. [2024-11-27 23:23:43,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87455 conditions, 50962 events. 14862/50962 cut-off events. For 4753/5036 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 637374 event pairs, 8825 based on Foata normal form. 0/47380 useless extension candidates. Maximal degree in co-relation 75854. Up to 14965 conditions per place. [2024-11-27 23:23:44,168 INFO L140 encePairwiseOnDemand]: 315/327 looper letters, 40 selfloop transitions, 3 changer transitions 0/436 dead transitions. [2024-11-27 23:23:44,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 436 transitions, 1609 flow [2024-11-27 23:23:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2024-11-27 23:23:44,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8481141692150866 [2024-11-27 23:23:44,172 INFO L175 Difference]: Start difference. First operand has 321 places, 441 transitions, 1528 flow. Second operand 3 states and 832 transitions. [2024-11-27 23:23:44,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 436 transitions, 1609 flow [2024-11-27 23:23:44,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 436 transitions, 1609 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:44,374 INFO L231 Difference]: Finished difference. Result has 315 places, 435 transitions, 1531 flow [2024-11-27 23:23:44,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1531, PETRI_PLACES=315, PETRI_TRANSITIONS=435} [2024-11-27 23:23:44,375 INFO L279 CegarLoopForPetriNet]: 312 programPoint places, 3 predicate places. [2024-11-27 23:23:44,376 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 435 transitions, 1531 flow [2024-11-27 23:23:44,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 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 23:23:44,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:44,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:44,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:23:44,377 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-11-27 23:23:44,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1244325779, now seen corresponding path program 1 times [2024-11-27 23:23:44,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:44,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012858040] [2024-11-27 23:23:44,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:44,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:45,089 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 23:23:45,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:45,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012858040] [2024-11-27 23:23:45,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012858040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:45,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:45,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:23:45,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520521] [2024-11-27 23:23:45,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:45,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:45,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:45,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:45,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 327 [2024-11-27 23:23:45,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 435 transitions, 1531 flow. Second operand has 6 states, 6 states have (on average 235.16666666666666) internal successors, (1411), 6 states have internal predecessors, (1411), 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 23:23:45,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:45,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 327 [2024-11-27 23:23:45,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand