./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct.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_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/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_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/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_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/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 b9f8638b837f9d4f066ca2de5a13579053f042517f09bc86f1b9882385463239 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:12:36,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:12:36,372 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:12:36,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:12:36,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:12:36,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:12:36,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:12:36,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:12:36,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:12:36,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:12:36,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:12:36,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:12:36,421 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:12:36,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:12:36,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:12:36,422 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:12:36,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:12:36,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:12:36,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:12:36,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:12:36,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:12:36,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:12:36,425 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:12:36,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:12:36,426 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:12:36,426 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:12:36,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:12:36,427 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:12:36,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:12:36,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:12:36,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:12:36,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:36,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:12:36,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:12:36,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:12:36,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:12:36,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:12:36,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:12:36,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:12:36,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:12:36,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:12:36,432 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_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9f8638b837f9d4f066ca2de5a13579053f042517f09bc86f1b9882385463239 [2024-10-31 22:12:36,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:12:36,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:12:36,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:12:36,840 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:12:36,841 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:12:36,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct.i Unable to find full path for "g++" [2024-10-31 22:12:39,160 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:12:39,616 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:12:39,618 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/sv-benchmarks/c/pthread-race-challenges/per-thread-struct.i [2024-10-31 22:12:39,647 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/data/ae8d3f826/5dcbdbbad7dd48b5a3c25d543ae2b08e/FLAG4e6470c51 [2024-10-31 22:12:39,671 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/data/ae8d3f826/5dcbdbbad7dd48b5a3c25d543ae2b08e [2024-10-31 22:12:39,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:12:39,678 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:12:39,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:39,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:12:39,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:12:39,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:39" (1/1) ... [2024-10-31 22:12:39,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea3d17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:39, skipping insertion in model container [2024-10-31 22:12:39,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:39" (1/1) ... [2024-10-31 22:12:39,795 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:12:40,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:40,555 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:12:40,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:40,670 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:12:40,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40 WrapperNode [2024-10-31 22:12:40,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:40,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:40,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:12:40,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:12:40,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,746 INFO L138 Inliner]: procedures = 261, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2024-10-31 22:12:40,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:40,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:12:40,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:12:40,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:12:40,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,817 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:12:40,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:12:40,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:12:40,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:12:40,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (1/1) ... [2024-10-31 22:12:40,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:40,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:40,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:12:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:12:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:12:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:12:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:12:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-10-31 22:12:40,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-10-31 22:12:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:12:40,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:12:40,905 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 22:12:41,121 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:12:41,125 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:12:41,418 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:12:41,423 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:12:41,449 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:12:41,449 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:12:41,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:41 BoogieIcfgContainer [2024-10-31 22:12:41,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:12:41,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:12:41,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:12:41,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:12:41,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:12:39" (1/3) ... [2024-10-31 22:12:41,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294a61e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:41, skipping insertion in model container [2024-10-31 22:12:41,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:40" (2/3) ... [2024-10-31 22:12:41,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294a61e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:41, skipping insertion in model container [2024-10-31 22:12:41,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:41" (3/3) ... [2024-10-31 22:12:41,464 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-struct.i [2024-10-31 22:12:41,489 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:12:41,489 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-31 22:12:41,490 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:12:41,595 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:12:41,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 85 transitions, 177 flow [2024-10-31 22:12:41,759 INFO L124 PetriNetUnfolderBase]: 6/119 cut-off events. [2024-10-31 22:12:41,759 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:12:41,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 6/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 185 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2024-10-31 22:12:41,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 85 transitions, 177 flow [2024-10-31 22:12:41,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 85 transitions, 177 flow [2024-10-31 22:12:41,792 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:12:41,803 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;@2f122ee4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:12:41,804 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-31 22:12:41,834 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:12:41,834 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2024-10-31 22:12:41,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:41,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:41,836 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:41,836 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:12:41,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash 707406292, now seen corresponding path program 1 times [2024-10-31 22:12:41,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:41,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404080617] [2024-10-31 22:12:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:41,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:42,545 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 22:12:42,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:42,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404080617] [2024-10-31 22:12:42,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404080617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:42,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:42,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:42,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089990875] [2024-10-31 22:12:42,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:42,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:42,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:42,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:42,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 85 [2024-10-31 22:12:42,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 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 22:12:42,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:42,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 85 [2024-10-31 22:12:42,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:42,899 INFO L124 PetriNetUnfolderBase]: 1/120 cut-off events. [2024-10-31 22:12:42,899 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:12:42,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 120 events. 1/120 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 159 event pairs, 0 based on Foata normal form. 2/116 useless extension candidates. Maximal degree in co-relation 22. Up to 16 conditions per place. [2024-10-31 22:12:42,902 INFO L140 encePairwiseOnDemand]: 74/85 looper letters, 11 selfloop transitions, 2 changer transitions 6/87 dead transitions. [2024-10-31 22:12:42,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 87 transitions, 217 flow [2024-10-31 22:12:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 438 transitions. [2024-10-31 22:12:42,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2024-10-31 22:12:42,949 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 177 flow. Second operand 6 states and 438 transitions. [2024-10-31 22:12:42,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 87 transitions, 217 flow [2024-10-31 22:12:42,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:12:42,965 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 187 flow [2024-10-31 22:12:42,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-10-31 22:12:42,976 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 9 predicate places. [2024-10-31 22:12:42,977 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 187 flow [2024-10-31 22:12:42,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 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 22:12:42,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:42,978 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:42,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:12:42,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:12:42,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:42,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1690337444, now seen corresponding path program 1 times [2024-10-31 22:12:42,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:42,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920787949] [2024-10-31 22:12:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:42,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:43,791 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 22:12:43,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920787949] [2024-10-31 22:12:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920787949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:43,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:43,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:43,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229906554] [2024-10-31 22:12:43,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:43,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:43,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:44,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 85 [2024-10-31 22:12:44,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 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 22:12:44,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:44,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 85 [2024-10-31 22:12:44,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:44,378 INFO L124 PetriNetUnfolderBase]: 70/365 cut-off events. [2024-10-31 22:12:44,378 INFO L125 PetriNetUnfolderBase]: For 22/25 co-relation queries the response was YES. [2024-10-31 22:12:44,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 365 events. 70/365 cut-off events. For 22/25 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1723 event pairs, 32 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 504. Up to 150 conditions per place. [2024-10-31 22:12:44,386 INFO L140 encePairwiseOnDemand]: 74/85 looper letters, 23 selfloop transitions, 22 changer transitions 0/102 dead transitions. [2024-10-31 22:12:44,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 102 transitions, 319 flow [2024-10-31 22:12:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 394 transitions. [2024-10-31 22:12:44,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7725490196078432 [2024-10-31 22:12:44,395 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 187 flow. Second operand 6 states and 394 transitions. [2024-10-31 22:12:44,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 102 transitions, 319 flow [2024-10-31 22:12:44,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 102 transitions, 305 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-31 22:12:44,407 INFO L231 Difference]: Finished difference. Result has 94 places, 102 transitions, 323 flow [2024-10-31 22:12:44,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=94, PETRI_TRANSITIONS=102} [2024-10-31 22:12:44,409 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 10 predicate places. [2024-10-31 22:12:44,409 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 102 transitions, 323 flow [2024-10-31 22:12:44,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 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 22:12:44,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:44,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:44,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:12:44,414 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:12:44,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash -649763536, now seen corresponding path program 1 times [2024-10-31 22:12:44,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:44,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135767774] [2024-10-31 22:12:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:44,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:45,077 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 22:12:45,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:45,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135767774] [2024-10-31 22:12:45,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135767774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:45,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:45,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:45,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122907889] [2024-10-31 22:12:45,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:45,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:45,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:45,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:45,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:45,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2024-10-31 22:12:45,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 323 flow. Second operand has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 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 22:12:45,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:45,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2024-10-31 22:12:45,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:45,457 INFO L124 PetriNetUnfolderBase]: 130/487 cut-off events. [2024-10-31 22:12:45,457 INFO L125 PetriNetUnfolderBase]: For 142/176 co-relation queries the response was YES. [2024-10-31 22:12:45,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 487 events. 130/487 cut-off events. For 142/176 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2451 event pairs, 23 based on Foata normal form. 0/454 useless extension candidates. Maximal degree in co-relation 987. Up to 238 conditions per place. [2024-10-31 22:12:45,468 INFO L140 encePairwiseOnDemand]: 70/85 looper letters, 33 selfloop transitions, 48 changer transitions 7/145 dead transitions. [2024-10-31 22:12:45,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 145 transitions, 641 flow [2024-10-31 22:12:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 435 transitions. [2024-10-31 22:12:45,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2024-10-31 22:12:45,474 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 323 flow. Second operand 6 states and 435 transitions. [2024-10-31 22:12:45,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 145 transitions, 641 flow [2024-10-31 22:12:45,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 145 transitions, 641 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:12:45,487 INFO L231 Difference]: Finished difference. Result has 104 places, 138 transitions, 697 flow [2024-10-31 22:12:45,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=697, PETRI_PLACES=104, PETRI_TRANSITIONS=138} [2024-10-31 22:12:45,490 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2024-10-31 22:12:45,491 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 138 transitions, 697 flow [2024-10-31 22:12:45,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 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 22:12:45,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:45,492 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:45,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:12:45,493 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:12:45,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:45,495 INFO L85 PathProgramCache]: Analyzing trace with hash -535742198, now seen corresponding path program 1 times [2024-10-31 22:12:45,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:45,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821679739] [2024-10-31 22:12:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:45,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:12:45,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:45,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821679739] [2024-10-31 22:12:45,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821679739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:45,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:45,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859405721] [2024-10-31 22:12:45,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:45,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:45,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:46,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 85 [2024-10-31 22:12:46,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 138 transitions, 697 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 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 22:12:46,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:46,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 85 [2024-10-31 22:12:46,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:46,377 INFO L124 PetriNetUnfolderBase]: 142/522 cut-off events. [2024-10-31 22:12:46,378 INFO L125 PetriNetUnfolderBase]: For 548/675 co-relation queries the response was YES. [2024-10-31 22:12:46,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1591 conditions, 522 events. 142/522 cut-off events. For 548/675 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2871 event pairs, 10 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 1481. Up to 241 conditions per place. [2024-10-31 22:12:46,383 INFO L140 encePairwiseOnDemand]: 74/85 looper letters, 73 selfloop transitions, 25 changer transitions 13/166 dead transitions. [2024-10-31 22:12:46,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 166 transitions, 1080 flow [2024-10-31 22:12:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2024-10-31 22:12:46,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7901960784313725 [2024-10-31 22:12:46,386 INFO L175 Difference]: Start difference. First operand has 104 places, 138 transitions, 697 flow. Second operand 6 states and 403 transitions. [2024-10-31 22:12:46,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 166 transitions, 1080 flow [2024-10-31 22:12:46,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 166 transitions, 1062 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-10-31 22:12:46,408 INFO L231 Difference]: Finished difference. Result has 107 places, 153 transitions, 914 flow [2024-10-31 22:12:46,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=914, PETRI_PLACES=107, PETRI_TRANSITIONS=153} [2024-10-31 22:12:46,410 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 23 predicate places. [2024-10-31 22:12:46,410 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 153 transitions, 914 flow [2024-10-31 22:12:46,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 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 22:12:46,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:46,412 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:46,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:12:46,413 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:12:46,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:46,415 INFO L85 PathProgramCache]: Analyzing trace with hash 225505610, now seen corresponding path program 1 times [2024-10-31 22:12:46,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:46,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674929000] [2024-10-31 22:12:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:46,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:46,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:12:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:46,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:12:46,526 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:12:46,528 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-31 22:12:46,530 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2024-10-31 22:12:46,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2024-10-31 22:12:46,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2024-10-31 22:12:46,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2024-10-31 22:12:46,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:12:46,532 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-31 22:12:46,536 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:12:46,536 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:12:46,576 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:12:46,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 104 transitions, 224 flow [2024-10-31 22:12:46,615 INFO L124 PetriNetUnfolderBase]: 11/205 cut-off events. [2024-10-31 22:12:46,616 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:12:46,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 205 events. 11/205 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 395 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2024-10-31 22:12:46,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 104 transitions, 224 flow [2024-10-31 22:12:46,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 104 transitions, 224 flow [2024-10-31 22:12:46,620 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:12:46,622 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f122ee4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:12:46,622 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-31 22:12:46,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:12:46,629 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2024-10-31 22:12:46,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:46,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:46,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:46,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:46,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:46,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1757470764, now seen corresponding path program 1 times [2024-10-31 22:12:46,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:46,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369673837] [2024-10-31 22:12:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:46,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:46,729 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 22:12:46,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:46,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369673837] [2024-10-31 22:12:46,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369673837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:46,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:46,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:46,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440577050] [2024-10-31 22:12:46,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:46,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:46,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:46,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:46,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:46,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 104 [2024-10-31 22:12:46,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 104 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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 22:12:46,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:46,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 104 [2024-10-31 22:12:46,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:46,941 INFO L124 PetriNetUnfolderBase]: 3/203 cut-off events. [2024-10-31 22:12:46,942 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-31 22:12:46,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 203 events. 3/203 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 426 event pairs, 0 based on Foata normal form. 2/195 useless extension candidates. Maximal degree in co-relation 143. Up to 32 conditions per place. [2024-10-31 22:12:46,943 INFO L140 encePairwiseOnDemand]: 93/104 looper letters, 14 selfloop transitions, 2 changer transitions 6/107 dead transitions. [2024-10-31 22:12:46,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 107 transitions, 272 flow [2024-10-31 22:12:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2024-10-31 22:12:46,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8701923076923077 [2024-10-31 22:12:46,949 INFO L175 Difference]: Start difference. First operand has 104 places, 104 transitions, 224 flow. Second operand 6 states and 543 transitions. [2024-10-31 22:12:46,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 107 transitions, 272 flow [2024-10-31 22:12:46,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:12:46,955 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 238 flow [2024-10-31 22:12:46,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2024-10-31 22:12:46,959 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 9 predicate places. [2024-10-31 22:12:46,959 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 238 flow [2024-10-31 22:12:46,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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 22:12:46,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:46,960 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:46,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:12:46,960 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:46,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:46,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1786749756, now seen corresponding path program 1 times [2024-10-31 22:12:46,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:46,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076454024] [2024-10-31 22:12:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:46,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:47,352 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 22:12:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:47,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076454024] [2024-10-31 22:12:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076454024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434696300] [2024-10-31 22:12:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:47,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:47,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:47,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 104 [2024-10-31 22:12:47,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 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 22:12:47,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:47,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 104 [2024-10-31 22:12:47,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:48,321 INFO L124 PetriNetUnfolderBase]: 902/2767 cut-off events. [2024-10-31 22:12:48,322 INFO L125 PetriNetUnfolderBase]: For 186/192 co-relation queries the response was YES. [2024-10-31 22:12:48,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4542 conditions, 2767 events. 902/2767 cut-off events. For 186/192 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 21368 event pairs, 529 based on Foata normal form. 0/2526 useless extension candidates. Maximal degree in co-relation 3139. Up to 1384 conditions per place. [2024-10-31 22:12:48,347 INFO L140 encePairwiseOnDemand]: 89/104 looper letters, 31 selfloop transitions, 38 changer transitions 0/139 dead transitions. [2024-10-31 22:12:48,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 139 transitions, 457 flow [2024-10-31 22:12:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2024-10-31 22:12:48,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7932692307692307 [2024-10-31 22:12:48,350 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 238 flow. Second operand 6 states and 495 transitions. [2024-10-31 22:12:48,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 139 transitions, 457 flow [2024-10-31 22:12:48,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 139 transitions, 445 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-31 22:12:48,356 INFO L231 Difference]: Finished difference. Result has 115 places, 138 transitions, 480 flow [2024-10-31 22:12:48,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=480, PETRI_PLACES=115, PETRI_TRANSITIONS=138} [2024-10-31 22:12:48,358 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 11 predicate places. [2024-10-31 22:12:48,358 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 138 transitions, 480 flow [2024-10-31 22:12:48,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 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 22:12:48,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:48,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:48,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:12:48,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:48,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:48,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2001006567, now seen corresponding path program 1 times [2024-10-31 22:12:48,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:48,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98972905] [2024-10-31 22:12:48,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:48,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:48,774 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 22:12:48,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98972905] [2024-10-31 22:12:48,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98972905] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:48,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:48,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:48,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105475476] [2024-10-31 22:12:48,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:48,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:48,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:48,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:48,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 104 [2024-10-31 22:12:48,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 138 transitions, 480 flow. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 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 22:12:48,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:48,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 104 [2024-10-31 22:12:48,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:50,048 INFO L124 PetriNetUnfolderBase]: 1867/4768 cut-off events. [2024-10-31 22:12:50,049 INFO L125 PetriNetUnfolderBase]: For 1555/1771 co-relation queries the response was YES. [2024-10-31 22:12:50,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10955 conditions, 4768 events. 1867/4768 cut-off events. For 1555/1771 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 37844 event pairs, 439 based on Foata normal form. 0/4460 useless extension candidates. Maximal degree in co-relation 8715. Up to 2583 conditions per place. [2024-10-31 22:12:50,090 INFO L140 encePairwiseOnDemand]: 85/104 looper letters, 63 selfloop transitions, 92 changer transitions 0/233 dead transitions. [2024-10-31 22:12:50,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 233 transitions, 1226 flow [2024-10-31 22:12:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2024-10-31 22:12:50,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8701923076923077 [2024-10-31 22:12:50,093 INFO L175 Difference]: Start difference. First operand has 115 places, 138 transitions, 480 flow. Second operand 6 states and 543 transitions. [2024-10-31 22:12:50,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 233 transitions, 1226 flow [2024-10-31 22:12:50,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 233 transitions, 1226 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:12:50,107 INFO L231 Difference]: Finished difference. Result has 125 places, 225 transitions, 1316 flow [2024-10-31 22:12:50,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1316, PETRI_PLACES=125, PETRI_TRANSITIONS=225} [2024-10-31 22:12:50,110 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 21 predicate places. [2024-10-31 22:12:50,111 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 225 transitions, 1316 flow [2024-10-31 22:12:50,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 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 22:12:50,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:50,111 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:50,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:12:50,112 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:50,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1723336065, now seen corresponding path program 1 times [2024-10-31 22:12:50,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:50,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301361800] [2024-10-31 22:12:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:50,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:12:50,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:50,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301361800] [2024-10-31 22:12:50,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301361800] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:50,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:50,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:50,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082983879] [2024-10-31 22:12:50,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:50,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:50,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:50,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:50,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 104 [2024-10-31 22:12:50,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 225 transitions, 1316 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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 22:12:50,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:50,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 104 [2024-10-31 22:12:50,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:51,962 INFO L124 PetriNetUnfolderBase]: 2321/5745 cut-off events. [2024-10-31 22:12:51,962 INFO L125 PetriNetUnfolderBase]: For 5611/6308 co-relation queries the response was YES. [2024-10-31 22:12:51,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17696 conditions, 5745 events. 2321/5745 cut-off events. For 5611/6308 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 46840 event pairs, 295 based on Foata normal form. 2/5511 useless extension candidates. Maximal degree in co-relation 14366. Up to 3135 conditions per place. [2024-10-31 22:12:52,119 INFO L140 encePairwiseOnDemand]: 89/104 looper letters, 145 selfloop transitions, 76 changer transitions 0/298 dead transitions. [2024-10-31 22:12:52,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 298 transitions, 2250 flow [2024-10-31 22:12:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2024-10-31 22:12:52,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8108974358974359 [2024-10-31 22:12:52,123 INFO L175 Difference]: Start difference. First operand has 125 places, 225 transitions, 1316 flow. Second operand 6 states and 506 transitions. [2024-10-31 22:12:52,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 298 transitions, 2250 flow [2024-10-31 22:12:52,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 298 transitions, 2232 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-10-31 22:12:52,192 INFO L231 Difference]: Finished difference. Result has 135 places, 296 transitions, 2156 flow [2024-10-31 22:12:52,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2156, PETRI_PLACES=135, PETRI_TRANSITIONS=296} [2024-10-31 22:12:52,195 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 31 predicate places. [2024-10-31 22:12:52,195 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 296 transitions, 2156 flow [2024-10-31 22:12:52,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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 22:12:52,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:52,197 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:52,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:12:52,198 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:52,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:52,200 INFO L85 PathProgramCache]: Analyzing trace with hash -426431938, now seen corresponding path program 1 times [2024-10-31 22:12:52,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:52,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790616032] [2024-10-31 22:12:52,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:52,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:53,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:53,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790616032] [2024-10-31 22:12:53,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790616032] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:53,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237720308] [2024-10-31 22:12:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:53,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:53,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:53,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:53,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb94f8a-4fd0-40d5-93af-d243e3ea4807/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:12:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:53,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-31 22:12:53,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:53,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-31 22:12:53,374 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:12:53,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-31 22:12:53,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-31 22:12:53,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-10-31 22:12:53,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:12:53,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-10-31 22:12:53,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:12:53,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-10-31 22:12:53,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2024-10-31 22:12:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:53,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:12:53,707 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_227 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base| v_ArrVal_227) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 1)))) (forall ((v_ArrVal_227 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base| v_ArrVal_227) c_threadThread1of2ForFork0_~t~0.base) c_threadThread1of2ForFork0_~t~0.offset))) (forall ((v_ArrVal_227 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base| v_ArrVal_227) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 2)))) (forall ((v_ArrVal_227 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base| v_ArrVal_227) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 3)) |c_threadThread1of2ForFork0_#t~nondet4|))) is different from false [2024-10-31 22:12:53,785 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_threadThread1of2ForFork0_~t~0.offset 3))) (let ((.cse0 (store |c_#race| c_threadThread1of2ForFork0_~t~0.base (store (select |c_#race| c_threadThread1of2ForFork0_~t~0.base) .cse1 |c_threadThread1of2ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_227 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~tids~0#1.base| v_ArrVal_227) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 2)))) (forall ((v_ArrVal_227 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~tids~0#1.base| v_ArrVal_227) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 1)))) (forall ((v_ArrVal_227 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~tids~0#1.base| v_ArrVal_227) c_threadThread1of2ForFork0_~t~0.base) .cse1))) (forall ((v_ArrVal_227 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~tids~0#1.base| v_ArrVal_227) c_threadThread1of2ForFork0_~t~0.base) c_threadThread1of2ForFork0_~t~0.offset) |c_threadThread1of2ForFork0_#t~nondet4|))))) is different from false [2024-10-31 22:13:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:01,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237720308] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:01,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:01,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-10-31 22:13:01,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170977077] [2024-10-31 22:13:01,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:01,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:13:01,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:01,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:13:01,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=219, Unknown=10, NotChecked=62, Total=342 [2024-10-31 22:13:01,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 104 [2024-10-31 22:13:01,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 296 transitions, 2156 flow. Second operand has 19 states, 19 states have (on average 54.89473684210526) internal successors, (1043), 19 states have internal predecessors, (1043), 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 22:13:01,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:01,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 104 [2024-10-31 22:13:01,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand