./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:52,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:52,590 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:10:52,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:52,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:52,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:52,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:52,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:52,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:52,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:52,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:52,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:52,629 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:52,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:52,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:10:52,631 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:52,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:52,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:52,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:52,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:10:52,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:52,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:10:52,634 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:10:52,634 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:52,634 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:10:52,639 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:52,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:10:52,640 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:52,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:52,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:52,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:52,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:52,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:52,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:52,642 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:10:52,642 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:52,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:52,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:52,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:52,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:52,646 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:52,646 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c [2024-10-31 22:10:52,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:52,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:52,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:52,994 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:52,995 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:52,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i Unable to find full path for "g++" [2024-10-31 22:10:55,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:55,558 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:55,559 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2024-10-31 22:10:55,574 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/data/c225dc0c3/7e2da42f6a954b50bcd7ca63de22eb0c/FLAGbb7d32b64 [2024-10-31 22:10:55,588 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/data/c225dc0c3/7e2da42f6a954b50bcd7ca63de22eb0c [2024-10-31 22:10:55,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:55,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:55,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:55,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:55,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:55,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:55" (1/1) ... [2024-10-31 22:10:55,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b05cef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:55, skipping insertion in model container [2024-10-31 22:10:55,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:55" (1/1) ... [2024-10-31 22:10:55,665 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:56,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:56,168 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:56,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:56,277 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:56,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56 WrapperNode [2024-10-31 22:10:56,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:56,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:56,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:56,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:56,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,335 INFO L138 Inliner]: procedures = 173, calls = 16, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 109 [2024-10-31 22:10:56,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:56,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:56,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:56,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:56,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:56,382 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:56,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:56,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:56,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (1/1) ... [2024-10-31 22:10:56,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:56,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:56,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:56,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e19d3fd-de9d-4b36-b791-683f338140f9/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-10-31 22:10:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-10-31 22:10:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:10:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:10:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:56,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:10:56,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:56,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:56,456 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:10:56,601 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:56,603 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:56,868 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:10:56,868 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:56,964 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:56,964 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:10:56,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:56 BoogieIcfgContainer [2024-10-31 22:10:56,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:56,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:56,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:56,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:56,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:55" (1/3) ... [2024-10-31 22:10:56,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b228f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:56, skipping insertion in model container [2024-10-31 22:10:56,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:56" (2/3) ... [2024-10-31 22:10:56,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b228f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:56, skipping insertion in model container [2024-10-31 22:10:56,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:56" (3/3) ... [2024-10-31 22:10:56,979 INFO L112 eAbstractionObserver]: Analyzing ICFG 30_Function_Pointer3_vs.i [2024-10-31 22:10:57,001 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:57,001 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-31 22:10:57,001 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:10:57,087 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:57,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 110 transitions, 228 flow [2024-10-31 22:10:57,206 INFO L124 PetriNetUnfolderBase]: 8/118 cut-off events. [2024-10-31 22:10:57,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:57,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 8/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 105. Up to 4 conditions per place. [2024-10-31 22:10:57,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 110 transitions, 228 flow [2024-10-31 22:10:57,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 109 transitions, 225 flow [2024-10-31 22:10:57,230 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:57,236 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;@46613f14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:57,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-31 22:10:57,246 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:57,246 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-10-31 22:10:57,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:57,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:57,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:57,248 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-31 22:10:57,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:57,253 INFO L85 PathProgramCache]: Analyzing trace with hash -120462322, now seen corresponding path program 1 times [2024-10-31 22:10:57,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:57,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443968676] [2024-10-31 22:10:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:57,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:57,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:57,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443968676] [2024-10-31 22:10:57,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443968676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:57,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:57,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:57,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327337189] [2024-10-31 22:10:57,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:57,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:57,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:57,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:57,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:57,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 110 [2024-10-31 22:10:57,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:57,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:57,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 110 [2024-10-31 22:10:57,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:57,669 INFO L124 PetriNetUnfolderBase]: 18/158 cut-off events. [2024-10-31 22:10:57,669 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:10:57,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 158 events. 18/158 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 335 event pairs, 1 based on Foata normal form. 47/189 useless extension candidates. Maximal degree in co-relation 185. Up to 25 conditions per place. [2024-10-31 22:10:57,673 INFO L140 encePairwiseOnDemand]: 96/110 looper letters, 11 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-10-31 22:10:57,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 234 flow [2024-10-31 22:10:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2024-10-31 22:10:57,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2024-10-31 22:10:57,690 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 225 flow. Second operand 3 states and 308 transitions. [2024-10-31 22:10:57,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 234 flow [2024-10-31 22:10:57,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:57,700 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 216 flow [2024-10-31 22:10:57,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-10-31 22:10:57,706 INFO L277 CegarLoopForPetriNet]: 108 programPoint places, -10 predicate places. [2024-10-31 22:10:57,707 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 216 flow [2024-10-31 22:10:57,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:57,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:57,708 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:57,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:57,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-31 22:10:57,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1361154627, now seen corresponding path program 1 times [2024-10-31 22:10:57,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:57,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053833142] [2024-10-31 22:10:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:57,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:57,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:57,772 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:57,773 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:10:57,775 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-31 22:10:57,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-10-31 22:10:57,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-10-31 22:10:57,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-10-31 22:10:57,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-10-31 22:10:57,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-10-31 22:10:57,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-10-31 22:10:57,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2024-10-31 22:10:57,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-10-31 22:10:57,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-10-31 22:10:57,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-10-31 22:10:57,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-10-31 22:10:57,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-10-31 22:10:57,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-10-31 22:10:57,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:10:57,781 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:10:57,784 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:10:57,784 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:10:57,896 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:57,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 191 transitions, 402 flow [2024-10-31 22:10:58,011 INFO L124 PetriNetUnfolderBase]: 11/192 cut-off events. [2024-10-31 22:10:58,012 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:10:58,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 192 events. 11/192 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 381 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 199. Up to 6 conditions per place. [2024-10-31 22:10:58,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 191 transitions, 402 flow [2024-10-31 22:10:58,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 172 transitions, 357 flow [2024-10-31 22:10:58,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:58,026 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;@46613f14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:58,026 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-31 22:10:58,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:58,034 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-10-31 22:10:58,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:58,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:58,038 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:58,038 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-10-31 22:10:58,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:58,039 INFO L85 PathProgramCache]: Analyzing trace with hash 358957501, now seen corresponding path program 1 times [2024-10-31 22:10:58,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:58,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144175369] [2024-10-31 22:10:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:58,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:58,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144175369] [2024-10-31 22:10:58,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144175369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:58,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:58,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:58,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600733034] [2024-10-31 22:10:58,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:58,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:58,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:58,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:58,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:58,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 191 [2024-10-31 22:10:58,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 172 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:58,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:58,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 191 [2024-10-31 22:10:58,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:58,490 INFO L124 PetriNetUnfolderBase]: 184/1343 cut-off events. [2024-10-31 22:10:58,490 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-10-31 22:10:58,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 1343 events. 184/1343 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9043 event pairs, 59 based on Foata normal form. 227/1468 useless extension candidates. Maximal degree in co-relation 1646. Up to 137 conditions per place. [2024-10-31 22:10:58,511 INFO L140 encePairwiseOnDemand]: 172/191 looper letters, 18 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2024-10-31 22:10:58,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 161 transitions, 387 flow [2024-10-31 22:10:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2024-10-31 22:10:58,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.900523560209424 [2024-10-31 22:10:58,520 INFO L175 Difference]: Start difference. First operand has 171 places, 172 transitions, 357 flow. Second operand 3 states and 516 transitions. [2024-10-31 22:10:58,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 161 transitions, 387 flow [2024-10-31 22:10:58,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 161 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:58,527 INFO L231 Difference]: Finished difference. Result has 157 places, 155 transitions, 348 flow [2024-10-31 22:10:58,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=157, PETRI_TRANSITIONS=155} [2024-10-31 22:10:58,529 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -14 predicate places. [2024-10-31 22:10:58,529 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 155 transitions, 348 flow [2024-10-31 22:10:58,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:58,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:58,530 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:58,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:10:58,531 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-10-31 22:10:58,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash 274684554, now seen corresponding path program 1 times [2024-10-31 22:10:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:58,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098471240] [2024-10-31 22:10:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:58,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:58,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:58,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:58,619 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:10:58,620 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-10-31 22:10:58,620 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-10-31 22:10:58,620 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-10-31 22:10:58,620 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-10-31 22:10:58,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-10-31 22:10:58,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-10-31 22:10:58,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-10-31 22:10:58,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 20 remaining) [2024-10-31 22:10:58,622 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-10-31 22:10:58,622 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-10-31 22:10:58,622 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2024-10-31 22:10:58,622 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-10-31 22:10:58,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-10-31 22:10:58,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-10-31 22:10:58,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-10-31 22:10:58,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-10-31 22:10:58,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-10-31 22:10:58,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-10-31 22:10:58,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-10-31 22:10:58,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-10-31 22:10:58,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:10:58,626 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:10:58,627 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:10:58,627 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:10:58,711 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:58,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 272 transitions, 580 flow [2024-10-31 22:10:58,771 INFO L124 PetriNetUnfolderBase]: 14/266 cut-off events. [2024-10-31 22:10:58,771 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:10:58,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 266 events. 14/266 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 739 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 277. Up to 8 conditions per place. [2024-10-31 22:10:58,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 272 transitions, 580 flow [2024-10-31 22:10:58,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 235 transitions, 491 flow [2024-10-31 22:10:58,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:58,780 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;@46613f14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:58,780 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-31 22:10:58,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:58,785 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-10-31 22:10:58,785 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:58,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:58,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:58,785 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-31 22:10:58,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:58,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1553414947, now seen corresponding path program 1 times [2024-10-31 22:10:58,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:58,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997988957] [2024-10-31 22:10:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:58,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:58,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997988957] [2024-10-31 22:10:58,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997988957] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:58,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:58,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:58,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399765830] [2024-10-31 22:10:58,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:58,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:58,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:58,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:58,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:58,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 272 [2024-10-31 22:10:58,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 235 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:58,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:58,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 272 [2024-10-31 22:10:58,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:00,612 INFO L124 PetriNetUnfolderBase]: 1166/6209 cut-off events. [2024-10-31 22:11:00,613 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2024-10-31 22:11:00,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 6209 events. 1166/6209 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 61195 event pairs, 476 based on Foata normal form. 998/6715 useless extension candidates. Maximal degree in co-relation 8084. Up to 831 conditions per place. [2024-10-31 22:11:00,769 INFO L140 encePairwiseOnDemand]: 248/272 looper letters, 25 selfloop transitions, 5 changer transitions 0/224 dead transitions. [2024-10-31 22:11:00,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 224 transitions, 544 flow [2024-10-31 22:11:00,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2024-10-31 22:11:00,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8872549019607843 [2024-10-31 22:11:00,772 INFO L175 Difference]: Start difference. First operand has 234 places, 235 transitions, 491 flow. Second operand 3 states and 724 transitions. [2024-10-31 22:11:00,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 224 transitions, 544 flow [2024-10-31 22:11:00,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 224 transitions, 539 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:00,782 INFO L231 Difference]: Finished difference. Result has 216 places, 215 transitions, 480 flow [2024-10-31 22:11:00,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=216, PETRI_TRANSITIONS=215} [2024-10-31 22:11:00,786 INFO L277 CegarLoopForPetriNet]: 234 programPoint places, -18 predicate places. [2024-10-31 22:11:00,787 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 215 transitions, 480 flow [2024-10-31 22:11:00,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:00,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:00,789 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:00,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:11:00,790 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-31 22:11:00,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:00,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1797486001, now seen corresponding path program 1 times [2024-10-31 22:11:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:00,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447634841] [2024-10-31 22:11:00,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:00,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:00,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:00,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:00,853 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:11:00,854 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-10-31 22:11:00,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2024-10-31 22:11:00,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2024-10-31 22:11:00,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2024-10-31 22:11:00,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2024-10-31 22:11:00,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2024-10-31 22:11:00,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2024-10-31 22:11:00,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 26 remaining) [2024-10-31 22:11:00,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2024-10-31 22:11:00,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2024-10-31 22:11:00,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2024-10-31 22:11:00,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2024-10-31 22:11:00,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2024-10-31 22:11:00,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2024-10-31 22:11:00,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2024-10-31 22:11:00,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2024-10-31 22:11:00,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2024-10-31 22:11:00,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2024-10-31 22:11:00,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2024-10-31 22:11:00,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2024-10-31 22:11:00,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2024-10-31 22:11:00,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2024-10-31 22:11:00,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2024-10-31 22:11:00,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2024-10-31 22:11:00,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2024-10-31 22:11:00,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2024-10-31 22:11:00,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:11:00,861 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:11:00,861 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:11:00,862 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-31 22:11:00,954 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:11:00,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 353 transitions, 762 flow [2024-10-31 22:11:01,039 INFO L124 PetriNetUnfolderBase]: 17/340 cut-off events. [2024-10-31 22:11:01,040 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 22:11:01,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 340 events. 17/340 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1129 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 356. Up to 10 conditions per place. [2024-10-31 22:11:01,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 353 transitions, 762 flow [2024-10-31 22:11:01,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 298 transitions, 627 flow [2024-10-31 22:11:01,051 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:01,052 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;@46613f14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:01,057 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-10-31 22:11:01,059 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:11:01,060 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-10-31 22:11:01,060 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:11:01,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:01,062 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:01,063 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-31 22:11:01,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1562612370, now seen corresponding path program 1 times [2024-10-31 22:11:01,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:01,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563109964] [2024-10-31 22:11:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:01,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:01,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:01,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563109964] [2024-10-31 22:11:01,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563109964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:01,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:01,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:01,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508416959] [2024-10-31 22:11:01,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:01,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:01,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:01,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:01,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:01,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 353 [2024-10-31 22:11:01,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 298 transitions, 627 flow. Second operand has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:01,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:01,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 353 [2024-10-31 22:11:01,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:07,353 INFO L124 PetriNetUnfolderBase]: 6256/23567 cut-off events. [2024-10-31 22:11:07,353 INFO L125 PetriNetUnfolderBase]: For 5218/5218 co-relation queries the response was YES. [2024-10-31 22:11:07,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33531 conditions, 23567 events. 6256/23567 cut-off events. For 5218/5218 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 282159 event pairs, 2789 based on Foata normal form. 4177/25632 useless extension candidates. Maximal degree in co-relation 33506. Up to 4695 conditions per place. [2024-10-31 22:11:07,776 INFO L140 encePairwiseOnDemand]: 324/353 looper letters, 32 selfloop transitions, 6 changer transitions 0/287 dead transitions. [2024-10-31 22:11:07,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 287 transitions, 705 flow [2024-10-31 22:11:07,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:07,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 932 transitions. [2024-10-31 22:11:07,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8800755429650614 [2024-10-31 22:11:07,781 INFO L175 Difference]: Start difference. First operand has 297 places, 298 transitions, 627 flow. Second operand 3 states and 932 transitions. [2024-10-31 22:11:07,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 287 transitions, 705 flow [2024-10-31 22:11:07,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 287 transitions, 692 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:07,796 INFO L231 Difference]: Finished difference. Result has 275 places, 275 transitions, 612 flow [2024-10-31 22:11:07,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=612, PETRI_PLACES=275, PETRI_TRANSITIONS=275} [2024-10-31 22:11:07,798 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, -22 predicate places. [2024-10-31 22:11:07,799 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 275 transitions, 612 flow [2024-10-31 22:11:07,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:07,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:07,800 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:07,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:11:07,800 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-31 22:11:07,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:07,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1442903513, now seen corresponding path program 1 times [2024-10-31 22:11:07,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:07,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578511877] [2024-10-31 22:11:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:07,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:07,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:07,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:07,869 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:11:07,869 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2024-10-31 22:11:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2024-10-31 22:11:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2024-10-31 22:11:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2024-10-31 22:11:07,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2024-10-31 22:11:07,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2024-10-31 22:11:07,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2024-10-31 22:11:07,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 32 remaining) [2024-10-31 22:11:07,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2024-10-31 22:11:07,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2024-10-31 22:11:07,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2024-10-31 22:11:07,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2024-10-31 22:11:07,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2024-10-31 22:11:07,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2024-10-31 22:11:07,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2024-10-31 22:11:07,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2024-10-31 22:11:07,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2024-10-31 22:11:07,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2024-10-31 22:11:07,876 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2024-10-31 22:11:07,876 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2024-10-31 22:11:07,876 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2024-10-31 22:11:07,876 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2024-10-31 22:11:07,876 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2024-10-31 22:11:07,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2024-10-31 22:11:07,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2024-10-31 22:11:07,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2024-10-31 22:11:07,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2024-10-31 22:11:07,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2024-10-31 22:11:07,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2024-10-31 22:11:07,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2024-10-31 22:11:07,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2024-10-31 22:11:07,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2024-10-31 22:11:07,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:11:07,878 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:11:07,879 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:11:07,879 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-31 22:11:07,980 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:11:07,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 434 transitions, 948 flow [2024-10-31 22:11:08,080 INFO L124 PetriNetUnfolderBase]: 20/414 cut-off events. [2024-10-31 22:11:08,081 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-31 22:11:08,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 414 events. 20/414 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1515 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 436. Up to 12 conditions per place. [2024-10-31 22:11:08,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 434 transitions, 948 flow [2024-10-31 22:11:08,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 360 places, 361 transitions, 765 flow [2024-10-31 22:11:08,094 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:08,095 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;@46613f14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:08,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-31 22:11:08,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:11:08,100 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-10-31 22:11:08,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:11:08,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:08,100 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:08,101 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-31 22:11:08,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:08,101 INFO L85 PathProgramCache]: Analyzing trace with hash 329271920, now seen corresponding path program 1 times [2024-10-31 22:11:08,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:08,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350775563] [2024-10-31 22:11:08,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:08,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:08,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:08,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350775563] [2024-10-31 22:11:08,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350775563] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:08,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:08,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598426010] [2024-10-31 22:11:08,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:08,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:08,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:08,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 434 [2024-10-31 22:11:08,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 361 transitions, 765 flow. Second operand has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:08,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:08,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 434 [2024-10-31 22:11:08,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand