./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd --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 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:54:14,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:54:14,961 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-13 13:54:14,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:54:14,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:54:15,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:54:15,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:54:15,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:54:15,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:54:15,003 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:54:15,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:54:15,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:54:15,003 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:54:15,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:54:15,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:54:15,004 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:54:15,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:54:15,004 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:54:15,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:54:15,004 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:54:15,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:54:15,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:54:15,004 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-13 13:54:15,004 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:54:15,005 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:54:15,005 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:54:15,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:54:15,005 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:54:15,005 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:54:15,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:54:15,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:54:15,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:54:15,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:54:15,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:54:15,006 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:54:15,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:54:15,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:54:15,007 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:54:15,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:54:15,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:54:15,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:54:15,007 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_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd 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 -> 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 [2024-11-13 13:54:15,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:54:15,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:54:15,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:54:15,355 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:54:15,356 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:54:15,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i Unable to find full path for "g++" [2024-11-13 13:54:17,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:54:17,597 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:54:17,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2024-11-13 13:54:17,610 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/data/d720c579b/0e0424185eb14a87bae9e1c2a6210c3b/FLAG2e75d8b92 [2024-11-13 13:54:17,626 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/data/d720c579b/0e0424185eb14a87bae9e1c2a6210c3b [2024-11-13 13:54:17,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:54:17,631 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:54:17,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:54:17,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:54:17,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:54:17,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:54:17" (1/1) ... [2024-11-13 13:54:17,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379e0175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:17, skipping insertion in model container [2024-11-13 13:54:17,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:54:17" (1/1) ... [2024-11-13 13:54:17,673 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:54:17,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:54:18,001 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:54:18,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:54:18,082 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:54:18,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18 WrapperNode [2024-11-13 13:54:18,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:54:18,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:54:18,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:54:18,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:54:18,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,115 INFO L138 Inliner]: procedures = 168, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-13 13:54:18,116 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:54:18,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:54:18,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:54:18,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:54:18,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:54:18,138 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:54:18,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:54:18,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:54:18,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (1/1) ... [2024-11-13 13:54:18,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:54:18,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:54:18,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:54:18,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bff8112-f912-4044-b336-ec7fa5e8a4f8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:54:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-13 13:54:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-13 13:54:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 13:54:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:54:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 13:54:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 13:54:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:54:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:54:18,227 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:54:18,389 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:54:18,392 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:54:18,562 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:54:18,562 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:54:18,688 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:54:18,688 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:54:18,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:54:18 BoogieIcfgContainer [2024-11-13 13:54:18,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:54:18,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:54:18,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:54:18,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:54:18,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:54:17" (1/3) ... [2024-11-13 13:54:18,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7f9c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:54:18, skipping insertion in model container [2024-11-13 13:54:18,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:54:18" (2/3) ... [2024-11-13 13:54:18,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7f9c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:54:18, skipping insertion in model container [2024-11-13 13:54:18,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:54:18" (3/3) ... [2024-11-13 13:54:18,702 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2024-11-13 13:54:18,719 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:54:18,721 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 46_monabsex2_vs.i that has 2 procedures, 32 locations, 1 initial locations, 1 loop locations, and 5 error locations. [2024-11-13 13:54:18,721 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:54:18,773 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:54:18,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 33 transitions, 70 flow [2024-11-13 13:54:18,884 INFO L124 PetriNetUnfolderBase]: 2/42 cut-off events. [2024-11-13 13:54:18,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:54:18,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2024-11-13 13:54:18,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 33 transitions, 70 flow [2024-11-13 13:54:18,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 33 transitions, 70 flow [2024-11-13 13:54:18,916 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:54:18,940 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;@60fbf805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:54:18,940 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-13 13:54:18,958 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:54:18,959 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-13 13:54:18,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:54:18,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:18,960 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:18,960 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-13 13:54:18,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:18,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1706091187, now seen corresponding path program 1 times [2024-11-13 13:54:18,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:18,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392466257] [2024-11-13 13:54:18,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:18,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:54:19,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:54:19,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392466257] [2024-11-13 13:54:19,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392466257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:54:19,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:54:19,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:54:19,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176381179] [2024-11-13 13:54:19,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:54:19,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:54:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:54:19,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:54:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:54:19,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 33 [2024-11-13 13:54:19,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 70 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-11-13 13:54:19,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:54:19,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 33 [2024-11-13 13:54:19,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:54:19,220 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-11-13 13:54:19,221 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 13:54:19,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 0/27 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 5/32 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2024-11-13 13:54:19,222 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 4 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-11-13 13:54:19,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 58 flow [2024-11-13 13:54:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:54:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:54:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 55 transitions. [2024-11-13 13:54:19,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2024-11-13 13:54:19,238 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 70 flow. Second operand 2 states and 55 transitions. [2024-11-13 13:54:19,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 58 flow [2024-11-13 13:54:19,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:54:19,250 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 50 flow [2024-11-13 13:54:19,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2024-11-13 13:54:19,256 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2024-11-13 13:54:19,256 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 50 flow [2024-11-13 13:54:19,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-11-13 13:54:19,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:19,257 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:19,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:54:19,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-13 13:54:19,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:19,261 INFO L85 PathProgramCache]: Analyzing trace with hash -491627661, now seen corresponding path program 1 times [2024-11-13 13:54:19,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:19,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336832317] [2024-11-13 13:54:19,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:19,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:19,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:54:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:19,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:54:19,349 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:54:19,351 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-13 13:54:19,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2024-11-13 13:54:19,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2024-11-13 13:54:19,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2024-11-13 13:54:19,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2024-11-13 13:54:19,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2024-11-13 13:54:19,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2024-11-13 13:54:19,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2024-11-13 13:54:19,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2024-11-13 13:54:19,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2024-11-13 13:54:19,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2024-11-13 13:54:19,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:54:19,356 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:54:19,362 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:54:19,363 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 13:54:19,435 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:54:19,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 100 flow [2024-11-13 13:54:19,503 INFO L124 PetriNetUnfolderBase]: 3/63 cut-off events. [2024-11-13 13:54:19,504 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:54:19,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 63 events. 3/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 43. Up to 6 conditions per place. [2024-11-13 13:54:19,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 45 transitions, 100 flow [2024-11-13 13:54:19,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 45 transitions, 100 flow [2024-11-13 13:54:19,509 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:54:19,518 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;@60fbf805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:54:19,518 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-13 13:54:19,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:54:19,536 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-13 13:54:19,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:54:19,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:19,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:19,537 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-11-13 13:54:19,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1708089346, now seen corresponding path program 1 times [2024-11-13 13:54:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:19,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855445661] [2024-11-13 13:54:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:54:19,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:54:19,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855445661] [2024-11-13 13:54:19,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855445661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:54:19,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:54:19,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:54:19,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313707127] [2024-11-13 13:54:19,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:54:19,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:54:19,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:54:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:54:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:54:19,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-11-13 13:54:19,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2024-11-13 13:54:19,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:54:19,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-11-13 13:54:19,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:54:19,622 INFO L124 PetriNetUnfolderBase]: 12/72 cut-off events. [2024-11-13 13:54:19,622 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-13 13:54:19,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 72 events. 12/72 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 164 event pairs, 12 based on Foata normal form. 21/91 useless extension candidates. Maximal degree in co-relation 66. Up to 33 conditions per place. [2024-11-13 13:54:19,623 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 8 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2024-11-13 13:54:19,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 86 flow [2024-11-13 13:54:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:54:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:54:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2024-11-13 13:54:19,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-11-13 13:54:19,625 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 100 flow. Second operand 2 states and 70 transitions. [2024-11-13 13:54:19,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 86 flow [2024-11-13 13:54:19,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:54:19,626 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 70 flow [2024-11-13 13:54:19,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-11-13 13:54:19,627 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -13 predicate places. [2024-11-13 13:54:19,627 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 70 flow [2024-11-13 13:54:19,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2024-11-13 13:54:19,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:19,628 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:19,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:54:19,628 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-11-13 13:54:19,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1670715579, now seen corresponding path program 1 times [2024-11-13 13:54:19,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:19,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509537297] [2024-11-13 13:54:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:19,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:19,651 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:54:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:19,680 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:54:19,680 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:54:19,680 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-13 13:54:19,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-11-13 13:54:19,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-11-13 13:54:19,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-11-13 13:54:19,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-11-13 13:54:19,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-11-13 13:54:19,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-11-13 13:54:19,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-11-13 13:54:19,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-11-13 13:54:19,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-11-13 13:54:19,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-11-13 13:54:19,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-11-13 13:54:19,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-11-13 13:54:19,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-11-13 13:54:19,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-11-13 13:54:19,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-11-13 13:54:19,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:54:19,682 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:54:19,683 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:54:19,683 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 13:54:19,726 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:54:19,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 57 transitions, 132 flow [2024-11-13 13:54:19,765 INFO L124 PetriNetUnfolderBase]: 4/84 cut-off events. [2024-11-13 13:54:19,765 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 13:54:19,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 4/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2024-11-13 13:54:19,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 57 transitions, 132 flow [2024-11-13 13:54:19,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 57 transitions, 132 flow [2024-11-13 13:54:19,768 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:54:19,769 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;@60fbf805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:54:19,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-13 13:54:19,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:54:19,781 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-13 13:54:19,782 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:54:19,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:19,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:19,782 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-13 13:54:19,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:19,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2024085143, now seen corresponding path program 1 times [2024-11-13 13:54:19,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:19,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775926375] [2024-11-13 13:54:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:19,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:54:19,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:54:19,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775926375] [2024-11-13 13:54:19,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775926375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:54:19,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:54:19,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:54:19,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513600167] [2024-11-13 13:54:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:54:19,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:54:19,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:54:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:54:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:54:19,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2024-11-13 13:54:19,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-13 13:54:19,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:54:19,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2024-11-13 13:54:19,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:54:19,976 INFO L124 PetriNetUnfolderBase]: 108/289 cut-off events. [2024-11-13 13:54:19,977 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-13 13:54:19,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 289 events. 108/289 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 108 based on Foata normal form. 85/368 useless extension candidates. Maximal degree in co-relation 347. Up to 193 conditions per place. [2024-11-13 13:54:19,980 INFO L140 encePairwiseOnDemand]: 40/57 looper letters, 12 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2024-11-13 13:54:19,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 116 flow [2024-11-13 13:54:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:54:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:54:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 85 transitions. [2024-11-13 13:54:19,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7456140350877193 [2024-11-13 13:54:19,983 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 132 flow. Second operand 2 states and 85 transitions. [2024-11-13 13:54:19,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 116 flow [2024-11-13 13:54:19,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 37 transitions, 114 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 13:54:19,985 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 90 flow [2024-11-13 13:54:19,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-13 13:54:19,986 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, -18 predicate places. [2024-11-13 13:54:19,986 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 90 flow [2024-11-13 13:54:19,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-13 13:54:19,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:19,986 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:19,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:54:19,987 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-13 13:54:19,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:19,987 INFO L85 PathProgramCache]: Analyzing trace with hash -411767080, now seen corresponding path program 1 times [2024-11-13 13:54:19,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:19,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606045271] [2024-11-13 13:54:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:19,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:20,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:54:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:20,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:54:20,034 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:54:20,034 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-13 13:54:20,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-11-13 13:54:20,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-11-13 13:54:20,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-11-13 13:54:20,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-11-13 13:54:20,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-11-13 13:54:20,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-11-13 13:54:20,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-11-13 13:54:20,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-11-13 13:54:20,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-11-13 13:54:20,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-11-13 13:54:20,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-11-13 13:54:20,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-11-13 13:54:20,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-11-13 13:54:20,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-11-13 13:54:20,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-11-13 13:54:20,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-11-13 13:54:20,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-11-13 13:54:20,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-11-13 13:54:20,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-11-13 13:54:20,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-11-13 13:54:20,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:54:20,037 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:54:20,038 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:54:20,038 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 13:54:20,086 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:54:20,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 166 flow [2024-11-13 13:54:20,139 INFO L124 PetriNetUnfolderBase]: 5/105 cut-off events. [2024-11-13 13:54:20,139 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-13 13:54:20,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 105 events. 5/105 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 233 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2024-11-13 13:54:20,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 166 flow [2024-11-13 13:54:20,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 69 transitions, 166 flow [2024-11-13 13:54:20,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:54:20,143 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;@60fbf805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:54:20,144 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-13 13:54:20,147 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:54:20,148 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-13 13:54:20,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:54:20,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:20,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:20,148 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-13 13:54:20,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash 758104500, now seen corresponding path program 1 times [2024-11-13 13:54:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996701541] [2024-11-13 13:54:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:54:20,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:54:20,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996701541] [2024-11-13 13:54:20,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996701541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:54:20,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:54:20,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:54:20,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890922650] [2024-11-13 13:54:20,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:54:20,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:54:20,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:54:20,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:54:20,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:54:20,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 69 [2024-11-13 13:54:20,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 166 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2024-11-13 13:54:20,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:54:20,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 69 [2024-11-13 13:54:20,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:54:20,548 INFO L124 PetriNetUnfolderBase]: 684/1338 cut-off events. [2024-11-13 13:54:20,548 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2024-11-13 13:54:20,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2766 conditions, 1338 events. 684/1338 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8146 event pairs, 684 based on Foata normal form. 341/1667 useless extension candidates. Maximal degree in co-relation 1756. Up to 1025 conditions per place. [2024-11-13 13:54:20,567 INFO L140 encePairwiseOnDemand]: 47/69 looper letters, 16 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2024-11-13 13:54:20,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 148 flow [2024-11-13 13:54:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:54:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:54:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 100 transitions. [2024-11-13 13:54:20,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7246376811594203 [2024-11-13 13:54:20,571 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 166 flow. Second operand 2 states and 100 transitions. [2024-11-13 13:54:20,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 148 flow [2024-11-13 13:54:20,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 44 transitions, 142 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-13 13:54:20,577 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 110 flow [2024-11-13 13:54:20,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-13 13:54:20,578 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -23 predicate places. [2024-11-13 13:54:20,578 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 110 flow [2024-11-13 13:54:20,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2024-11-13 13:54:20,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:20,580 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:20,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:54:20,581 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-13 13:54:20,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1457945616, now seen corresponding path program 1 times [2024-11-13 13:54:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505663998] [2024-11-13 13:54:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:20,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:54:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:20,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:54:20,660 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:54:20,660 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-11-13 13:54:20,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2024-11-13 13:54:20,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2024-11-13 13:54:20,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2024-11-13 13:54:20,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2024-11-13 13:54:20,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2024-11-13 13:54:20,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2024-11-13 13:54:20,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2024-11-13 13:54:20,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2024-11-13 13:54:20,665 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2024-11-13 13:54:20,665 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2024-11-13 13:54:20,665 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2024-11-13 13:54:20,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2024-11-13 13:54:20,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2024-11-13 13:54:20,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2024-11-13 13:54:20,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2024-11-13 13:54:20,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:54:20,666 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:54:20,667 WARN L247 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:54:20,668 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-13 13:54:20,723 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:54:20,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 81 transitions, 202 flow [2024-11-13 13:54:20,753 INFO L124 PetriNetUnfolderBase]: 6/126 cut-off events. [2024-11-13 13:54:20,754 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-13 13:54:20,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 126 events. 6/126 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 306 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 118. Up to 12 conditions per place. [2024-11-13 13:54:20,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 81 transitions, 202 flow [2024-11-13 13:54:20,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 81 transitions, 202 flow [2024-11-13 13:54:20,760 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:54:20,762 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;@60fbf805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:54:20,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-13 13:54:20,767 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:54:20,767 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-13 13:54:20,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:54:20,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:20,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:20,768 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-11-13 13:54:20,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1951456065, now seen corresponding path program 1 times [2024-11-13 13:54:20,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:20,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848888133] [2024-11-13 13:54:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:20,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:54:20,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:54:20,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848888133] [2024-11-13 13:54:20,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848888133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:54:20,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:54:20,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:54:20,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986293711] [2024-11-13 13:54:20,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:54:20,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:54:20,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:54:20,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:54:20,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:54:20,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-13 13:54:20,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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) [2024-11-13 13:54:20,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:54:20,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-13 13:54:20,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:54:22,063 INFO L124 PetriNetUnfolderBase]: 3756/6291 cut-off events. [2024-11-13 13:54:22,064 INFO L125 PetriNetUnfolderBase]: For 4599/4599 co-relation queries the response was YES. [2024-11-13 13:54:22,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13352 conditions, 6291 events. 3756/6291 cut-off events. For 4599/4599 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 43555 event pairs, 3756 based on Foata normal form. 1365/7636 useless extension candidates. Maximal degree in co-relation 8541. Up to 5121 conditions per place. [2024-11-13 13:54:22,131 INFO L140 encePairwiseOnDemand]: 54/81 looper letters, 20 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2024-11-13 13:54:22,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 182 flow [2024-11-13 13:54:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:54:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:54:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 115 transitions. [2024-11-13 13:54:22,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2024-11-13 13:54:22,134 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 202 flow. Second operand 2 states and 115 transitions. [2024-11-13 13:54:22,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 182 flow [2024-11-13 13:54:22,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 51 transitions, 170 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-13 13:54:22,141 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 130 flow [2024-11-13 13:54:22,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-11-13 13:54:22,142 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -28 predicate places. [2024-11-13 13:54:22,143 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 130 flow [2024-11-13 13:54:22,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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) [2024-11-13 13:54:22,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:22,144 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:22,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:54:22,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-11-13 13:54:22,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:22,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2038052243, now seen corresponding path program 1 times [2024-11-13 13:54:22,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:22,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255155760] [2024-11-13 13:54:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:22,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:22,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:54:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:22,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:54:22,210 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:54:22,210 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-11-13 13:54:22,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2024-11-13 13:54:22,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2024-11-13 13:54:22,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2024-11-13 13:54:22,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2024-11-13 13:54:22,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2024-11-13 13:54:22,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2024-11-13 13:54:22,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2024-11-13 13:54:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2024-11-13 13:54:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2024-11-13 13:54:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2024-11-13 13:54:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2024-11-13 13:54:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2024-11-13 13:54:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2024-11-13 13:54:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2024-11-13 13:54:22,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2024-11-13 13:54:22,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2024-11-13 13:54:22,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2024-11-13 13:54:22,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2024-11-13 13:54:22,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2024-11-13 13:54:22,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2024-11-13 13:54:22,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2024-11-13 13:54:22,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2024-11-13 13:54:22,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2024-11-13 13:54:22,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2024-11-13 13:54:22,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2024-11-13 13:54:22,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2024-11-13 13:54:22,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2024-11-13 13:54:22,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2024-11-13 13:54:22,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2024-11-13 13:54:22,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2024-11-13 13:54:22,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:54:22,216 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:54:22,217 WARN L247 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:54:22,217 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-13 13:54:22,285 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:54:22,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 93 transitions, 240 flow [2024-11-13 13:54:22,315 INFO L124 PetriNetUnfolderBase]: 7/147 cut-off events. [2024-11-13 13:54:22,316 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-13 13:54:22,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 147 events. 7/147 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 338 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 145. Up to 14 conditions per place. [2024-11-13 13:54:22,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 93 transitions, 240 flow [2024-11-13 13:54:22,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 93 transitions, 240 flow [2024-11-13 13:54:22,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:54:22,323 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;@60fbf805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:54:22,323 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-13 13:54:22,327 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:54:22,328 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-13 13:54:22,328 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:54:22,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:22,328 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:22,328 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-11-13 13:54:22,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1562831190, now seen corresponding path program 1 times [2024-11-13 13:54:22,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:22,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776039262] [2024-11-13 13:54:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:54:22,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:54:22,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776039262] [2024-11-13 13:54:22,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776039262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:54:22,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:54:22,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:54:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870600129] [2024-11-13 13:54:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:54:22,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:54:22,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:54:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:54:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:54:22,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-11-13 13:54:22,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 240 flow. Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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) [2024-11-13 13:54:22,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:54:22,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-11-13 13:54:22,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:54:27,424 INFO L124 PetriNetUnfolderBase]: 19116/29164 cut-off events. [2024-11-13 13:54:27,424 INFO L125 PetriNetUnfolderBase]: For 26108/26108 co-relation queries the response was YES. [2024-11-13 13:54:27,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62850 conditions, 29164 events. 19116/29164 cut-off events. For 26108/26108 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 218521 event pairs, 19116 based on Foata normal form. 5461/34595 useless extension candidates. Maximal degree in co-relation 40286. Up to 24577 conditions per place. [2024-11-13 13:54:27,685 INFO L140 encePairwiseOnDemand]: 61/93 looper letters, 24 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2024-11-13 13:54:27,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 218 flow [2024-11-13 13:54:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:54:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:54:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 130 transitions. [2024-11-13 13:54:27,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2024-11-13 13:54:27,687 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 240 flow. Second operand 2 states and 130 transitions. [2024-11-13 13:54:27,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 218 flow [2024-11-13 13:54:27,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 58 transitions, 198 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-13 13:54:27,700 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 150 flow [2024-11-13 13:54:27,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-11-13 13:54:27,701 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -33 predicate places. [2024-11-13 13:54:27,702 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 150 flow [2024-11-13 13:54:27,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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) [2024-11-13 13:54:27,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:27,702 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:27,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:54:27,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-11-13 13:54:27,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:27,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1396950821, now seen corresponding path program 1 times [2024-11-13 13:54:27,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:27,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351908639] [2024-11-13 13:54:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:27,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:27,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:54:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:27,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:54:27,744 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:54:27,744 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2024-11-13 13:54:27,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2024-11-13 13:54:27,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2024-11-13 13:54:27,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2024-11-13 13:54:27,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2024-11-13 13:54:27,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2024-11-13 13:54:27,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2024-11-13 13:54:27,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2024-11-13 13:54:27,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2024-11-13 13:54:27,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2024-11-13 13:54:27,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2024-11-13 13:54:27,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2024-11-13 13:54:27,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2024-11-13 13:54:27,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2024-11-13 13:54:27,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2024-11-13 13:54:27,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2024-11-13 13:54:27,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2024-11-13 13:54:27,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2024-11-13 13:54:27,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2024-11-13 13:54:27,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2024-11-13 13:54:27,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2024-11-13 13:54:27,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2024-11-13 13:54:27,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2024-11-13 13:54:27,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2024-11-13 13:54:27,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2024-11-13 13:54:27,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2024-11-13 13:54:27,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2024-11-13 13:54:27,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2024-11-13 13:54:27,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2024-11-13 13:54:27,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2024-11-13 13:54:27,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2024-11-13 13:54:27,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2024-11-13 13:54:27,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2024-11-13 13:54:27,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2024-11-13 13:54:27,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2024-11-13 13:54:27,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2024-11-13 13:54:27,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:54:27,750 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:54:27,751 WARN L247 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:54:27,751 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-11-13 13:54:27,807 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:54:27,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 105 transitions, 280 flow [2024-11-13 13:54:27,828 INFO L124 PetriNetUnfolderBase]: 8/168 cut-off events. [2024-11-13 13:54:27,828 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-13 13:54:27,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 168 events. 8/168 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 446 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 173. Up to 16 conditions per place. [2024-11-13 13:54:27,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 105 transitions, 280 flow [2024-11-13 13:54:27,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 105 transitions, 280 flow [2024-11-13 13:54:27,832 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:54:27,833 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;@60fbf805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:54:27,833 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-13 13:54:27,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:54:27,836 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-13 13:54:27,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:54:27,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:27,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:27,837 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-11-13 13:54:27,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:27,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1923979829, now seen corresponding path program 1 times [2024-11-13 13:54:27,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:27,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26371330] [2024-11-13 13:54:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:27,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:54:27,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:54:27,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26371330] [2024-11-13 13:54:27,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26371330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:54:27,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:54:27,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:54:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93536352] [2024-11-13 13:54:27,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:54:27,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:54:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:54:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:54:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:54:27,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 105 [2024-11-13 13:54:27,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 105 transitions, 280 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2024-11-13 13:54:27,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:54:27,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 105 [2024-11-13 13:54:27,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:54:42,066 INFO L124 PetriNetUnfolderBase]: 92844/132933 cut-off events. [2024-11-13 13:54:42,066 INFO L125 PetriNetUnfolderBase]: For 140802/140802 co-relation queries the response was YES. [2024-11-13 13:54:42,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289500 conditions, 132933 events. 92844/132933 cut-off events. For 140802/140802 co-relation queries the response was YES. Maximal size of possible extension queue 5189. Compared 1050636 event pairs, 92844 based on Foata normal form. 21845/154736 useless extension candidates. Maximal degree in co-relation 185695. Up to 114689 conditions per place. [2024-11-13 13:54:43,603 INFO L140 encePairwiseOnDemand]: 68/105 looper letters, 28 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2024-11-13 13:54:43,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 65 transitions, 256 flow [2024-11-13 13:54:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:54:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:54:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 145 transitions. [2024-11-13 13:54:43,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-11-13 13:54:43,605 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 280 flow. Second operand 2 states and 145 transitions. [2024-11-13 13:54:43,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 65 transitions, 256 flow [2024-11-13 13:54:43,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 65 transitions, 226 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-13 13:54:43,673 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 170 flow [2024-11-13 13:54:43,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=170, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2024-11-13 13:54:43,674 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -38 predicate places. [2024-11-13 13:54:43,674 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 170 flow [2024-11-13 13:54:43,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2024-11-13 13:54:43,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:43,675 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:43,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:54:43,675 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-11-13 13:54:43,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2022222798, now seen corresponding path program 1 times [2024-11-13 13:54:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:43,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398172069] [2024-11-13 13:54:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:43,703 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:54:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:54:43,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:54:43,725 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:54:43,725 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2024-11-13 13:54:43,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2024-11-13 13:54:43,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2024-11-13 13:54:43,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2024-11-13 13:54:43,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2024-11-13 13:54:43,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2024-11-13 13:54:43,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2024-11-13 13:54:43,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2024-11-13 13:54:43,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2024-11-13 13:54:43,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2024-11-13 13:54:43,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2024-11-13 13:54:43,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2024-11-13 13:54:43,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2024-11-13 13:54:43,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2024-11-13 13:54:43,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2024-11-13 13:54:43,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2024-11-13 13:54:43,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2024-11-13 13:54:43,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2024-11-13 13:54:43,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2024-11-13 13:54:43,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2024-11-13 13:54:43,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2024-11-13 13:54:43,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2024-11-13 13:54:43,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2024-11-13 13:54:43,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2024-11-13 13:54:43,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2024-11-13 13:54:43,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2024-11-13 13:54:43,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2024-11-13 13:54:43,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2024-11-13 13:54:43,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2024-11-13 13:54:43,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2024-11-13 13:54:43,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2024-11-13 13:54:43,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2024-11-13 13:54:43,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2024-11-13 13:54:43,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2024-11-13 13:54:43,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2024-11-13 13:54:43,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2024-11-13 13:54:43,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2024-11-13 13:54:43,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2024-11-13 13:54:43,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2024-11-13 13:54:43,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2024-11-13 13:54:43,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2024-11-13 13:54:43,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:54:43,730 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:54:43,731 WARN L247 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:54:43,731 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-11-13 13:54:43,810 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:54:43,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 117 transitions, 322 flow [2024-11-13 13:54:43,842 INFO L124 PetriNetUnfolderBase]: 9/189 cut-off events. [2024-11-13 13:54:43,842 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-13 13:54:43,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 189 events. 9/189 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 504 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 202. Up to 18 conditions per place. [2024-11-13 13:54:43,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 117 transitions, 322 flow [2024-11-13 13:54:43,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 117 transitions, 322 flow [2024-11-13 13:54:43,847 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:54:43,847 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;@60fbf805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:54:43,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-13 13:54:43,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:54:43,850 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-13 13:54:43,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:54:43,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:54:43,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:43,851 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2024-11-13 13:54:43,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:43,851 INFO L85 PathProgramCache]: Analyzing trace with hash -80960416, now seen corresponding path program 1 times [2024-11-13 13:54:43,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:43,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458265550] [2024-11-13 13:54:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:43,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:54:43,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:54:43,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458265550] [2024-11-13 13:54:43,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458265550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:54:43,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:54:43,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:54:43,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451564312] [2024-11-13 13:54:43,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:54:43,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:54:43,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:54:43,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:54:43,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:54:43,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 117 [2024-11-13 13:54:43,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 117 transitions, 322 flow. Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 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) [2024-11-13 13:54:43,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:54:43,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 117 [2024-11-13 13:54:43,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand