./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b 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_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:23:05,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:23:05,572 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:23:05,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:23:05,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:23:05,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:23:05,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:23:05,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:23:05,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:23:05,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:23:05,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:23:05,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:23:05,646 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:23:05,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:23:05,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:23:05,650 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:23:05,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:23:05,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:23:05,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:23:05,653 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:23:05,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:23:05,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:23:05,656 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:23:05,657 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:23:05,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:23:05,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:23:05,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:23:05,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:23:05,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:23:05,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:23:05,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:05,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:23:05,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:23:05,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:23:05,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:23:05,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:23:05,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:23:05,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:23:05,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:23:05,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:23:05,668 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:23:05,669 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_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2023-11-06 22:23:06,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:23:06,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:23:06,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:23:06,182 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:23:06,183 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:23:06,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2023-11-06 22:23:09,880 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:23:10,333 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:23:10,334 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2023-11-06 22:23:10,369 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/data/43d1f4fdd/057378e59978469c8e77f3b93eb3372a/FLAG692be68b2 [2023-11-06 22:23:10,418 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/data/43d1f4fdd/057378e59978469c8e77f3b93eb3372a [2023-11-06 22:23:10,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:23:10,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:23:10,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:23:10,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:23:10,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:23:10,441 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:10" (1/1) ... [2023-11-06 22:23:10,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b6c526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:10, skipping insertion in model container [2023-11-06 22:23:10,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:10" (1/1) ... [2023-11-06 22:23:10,533 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:23:10,725 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:23:11,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:11,263 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:23:11,292 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:23:11,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:11,451 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:23:11,459 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:23:11,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11 WrapperNode [2023-11-06 22:23:11,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:23:11,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:23:11,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:23:11,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:23:11,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,583 INFO L138 Inliner]: procedures = 310, calls = 77, calls flagged for inlining = 17, calls inlined = 12, statements flattened = 363 [2023-11-06 22:23:11,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:23:11,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:23:11,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:23:11,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:23:11,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,678 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:23:11,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:23:11,679 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:23:11,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:23:11,680 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (1/1) ... [2023-11-06 22:23:11,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:11,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:11,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:23:11,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea492f77-73d9-4047-ac92-9ca6c95d66ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:23:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2023-11-06 22:23:11,788 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2023-11-06 22:23:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2023-11-06 22:23:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2023-11-06 22:23:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:23:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:23:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:23:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:23:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:23:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:23:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:23:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:23:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:23:11,794 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:23:12,068 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:23:12,071 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:23:12,998 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:23:13,010 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:23:13,011 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:23:13,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:13 BoogieIcfgContainer [2023-11-06 22:23:13,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:23:13,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:23:13,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:23:13,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:23:13,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:23:10" (1/3) ... [2023-11-06 22:23:13,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a49e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:13, skipping insertion in model container [2023-11-06 22:23:13,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:11" (2/3) ... [2023-11-06 22:23:13,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a49e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:13, skipping insertion in model container [2023-11-06 22:23:13,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:13" (3/3) ... [2023-11-06 22:23:13,031 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2023-11-06 22:23:13,042 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:23:13,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:23:13,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-06 22:23:13,056 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:23:13,280 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:23:13,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 406 places, 420 transitions, 854 flow [2023-11-06 22:23:13,762 INFO L124 PetriNetUnfolderBase]: 21/418 cut-off events. [2023-11-06 22:23:13,763 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:23:13,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 418 events. 21/418 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 993 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 350. Up to 2 conditions per place. [2023-11-06 22:23:13,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 406 places, 420 transitions, 854 flow [2023-11-06 22:23:13,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 393 places, 407 transitions, 823 flow [2023-11-06 22:23:13,815 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:23:13,839 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 393 places, 407 transitions, 823 flow [2023-11-06 22:23:13,843 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 393 places, 407 transitions, 823 flow [2023-11-06 22:23:13,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 407 transitions, 823 flow [2023-11-06 22:23:14,008 INFO L124 PetriNetUnfolderBase]: 21/407 cut-off events. [2023-11-06 22:23:14,009 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:23:14,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 407 events. 21/407 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 959 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 350. Up to 2 conditions per place. [2023-11-06 22:23:14,062 INFO L119 LiptonReduction]: Number of co-enabled transitions 75208 [2023-11-06 22:23:32,148 INFO L134 LiptonReduction]: Checked pairs total: 427050 [2023-11-06 22:23:32,149 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-11-06 22:23:32,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:23:32,177 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@215ac294, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:23:32,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-06 22:23:32,179 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:23:32,180 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:23:32,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:23:32,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:32,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:23:32,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-06 22:23:32,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:32,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1468, now seen corresponding path program 1 times [2023-11-06 22:23:32,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:32,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454696887] [2023-11-06 22:23:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:32,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:32,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454696887] [2023-11-06 22:23:32,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454696887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:32,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:32,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:23:32,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738226590] [2023-11-06 22:23:32,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:32,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:23:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:32,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:23:32,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:23:32,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 674 [2023-11-06 22:23:32,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 205 transitions, 419 flow. Second operand has 2 states, 2 states have (on average 402.5) internal successors, (805), 2 states have internal predecessors, (805), 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) [2023-11-06 22:23:32,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:32,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 674 [2023-11-06 22:23:32,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:35,983 INFO L124 PetriNetUnfolderBase]: 5216/14979 cut-off events. [2023-11-06 22:23:35,984 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-06 22:23:36,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22399 conditions, 14979 events. 5216/14979 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 147586 event pairs, 3925 based on Foata normal form. 964/13872 useless extension candidates. Maximal degree in co-relation 22199. Up to 7365 conditions per place. [2023-11-06 22:23:36,134 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 49 selfloop transitions, 0 changer transitions 0/195 dead transitions. [2023-11-06 22:23:36,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 195 transitions, 497 flow [2023-11-06 22:23:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:23:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:23:36,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 862 transitions. [2023-11-06 22:23:36,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6394658753709199 [2023-11-06 22:23:36,162 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 862 transitions. [2023-11-06 22:23:36,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 862 transitions. [2023-11-06 22:23:36,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:36,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 862 transitions. [2023-11-06 22:23:36,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 431.0) internal successors, (862), 2 states have internal predecessors, (862), 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) [2023-11-06 22:23:36,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 674.0) internal successors, (2022), 3 states have internal predecessors, (2022), 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) [2023-11-06 22:23:36,194 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 674.0) internal successors, (2022), 3 states have internal predecessors, (2022), 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) [2023-11-06 22:23:36,197 INFO L175 Difference]: Start difference. First operand has 198 places, 205 transitions, 419 flow. Second operand 2 states and 862 transitions. [2023-11-06 22:23:36,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 195 transitions, 497 flow [2023-11-06 22:23:36,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 195 transitions, 492 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:23:36,211 INFO L231 Difference]: Finished difference. Result has 193 places, 195 transitions, 394 flow [2023-11-06 22:23:36,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=394, PETRI_PLACES=193, PETRI_TRANSITIONS=195} [2023-11-06 22:23:36,218 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -5 predicate places. [2023-11-06 22:23:36,219 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 195 transitions, 394 flow [2023-11-06 22:23:36,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 402.5) internal successors, (805), 2 states have internal predecessors, (805), 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) [2023-11-06 22:23:36,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:36,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:36,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:23:36,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-06 22:23:36,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:36,223 INFO L85 PathProgramCache]: Analyzing trace with hash -876076729, now seen corresponding path program 1 times [2023-11-06 22:23:36,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:36,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359989025] [2023-11-06 22:23:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:36,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:36,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359989025] [2023-11-06 22:23:36,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359989025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:36,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:36,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:23:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448066481] [2023-11-06 22:23:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:36,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:36,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:36,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:36,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:23:36,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 674 [2023-11-06 22:23:36,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 195 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 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) [2023-11-06 22:23:36,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:36,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 674 [2023-11-06 22:23:36,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:42,336 INFO L124 PetriNetUnfolderBase]: 9436/27691 cut-off events. [2023-11-06 22:23:42,337 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 22:23:42,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41059 conditions, 27691 events. 9436/27691 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 298465 event pairs, 5851 based on Foata normal form. 0/23875 useless extension candidates. Maximal degree in co-relation 41056. Up to 7365 conditions per place. [2023-11-06 22:23:42,557 INFO L140 encePairwiseOnDemand]: 671/674 looper letters, 88 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-11-06 22:23:42,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 236 transitions, 656 flow [2023-11-06 22:23:42,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:42,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:23:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1279 transitions. [2023-11-06 22:23:42,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6325420375865479 [2023-11-06 22:23:42,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1279 transitions. [2023-11-06 22:23:42,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1279 transitions. [2023-11-06 22:23:42,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:42,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1279 transitions. [2023-11-06 22:23:42,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 426.3333333333333) internal successors, (1279), 3 states have internal predecessors, (1279), 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) [2023-11-06 22:23:42,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 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) [2023-11-06 22:23:42,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 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) [2023-11-06 22:23:42,587 INFO L175 Difference]: Start difference. First operand has 193 places, 195 transitions, 394 flow. Second operand 3 states and 1279 transitions. [2023-11-06 22:23:42,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 236 transitions, 656 flow [2023-11-06 22:23:42,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 236 transitions, 656 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:23:42,604 INFO L231 Difference]: Finished difference. Result has 196 places, 196 transitions, 406 flow [2023-11-06 22:23:42,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=196, PETRI_TRANSITIONS=196} [2023-11-06 22:23:42,607 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -2 predicate places. [2023-11-06 22:23:42,607 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 196 transitions, 406 flow [2023-11-06 22:23:42,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 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) [2023-11-06 22:23:42,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:42,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:42,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:23:42,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-06 22:23:42,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1054403973, now seen corresponding path program 1 times [2023-11-06 22:23:42,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:42,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490970712] [2023-11-06 22:23:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:42,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:43,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:43,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490970712] [2023-11-06 22:23:43,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490970712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:43,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:43,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:23:43,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504105456] [2023-11-06 22:23:43,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:43,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:23:43,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:43,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:23:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:23:44,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 674 [2023-11-06 22:23:44,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 196 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 349.8333333333333) internal successors, (2099), 6 states have internal predecessors, (2099), 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) [2023-11-06 22:23:44,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:44,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 674 [2023-11-06 22:23:44,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:19,931 INFO L124 PetriNetUnfolderBase]: 127182/231920 cut-off events. [2023-11-06 22:24:19,931 INFO L125 PetriNetUnfolderBase]: For 2356/2356 co-relation queries the response was YES. [2023-11-06 22:24:20,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418644 conditions, 231920 events. 127182/231920 cut-off events. For 2356/2356 co-relation queries the response was YES. Maximal size of possible extension queue 3373. Compared 2430717 event pairs, 45793 based on Foata normal form. 0/206992 useless extension candidates. Maximal degree in co-relation 418639. Up to 121379 conditions per place. [2023-11-06 22:24:21,629 INFO L140 encePairwiseOnDemand]: 638/674 looper letters, 219 selfloop transitions, 81 changer transitions 0/406 dead transitions. [2023-11-06 22:24:21,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 406 transitions, 1426 flow [2023-11-06 22:24:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:24:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:24:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2390 transitions. [2023-11-06 22:24:21,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909990108803165 [2023-11-06 22:24:21,641 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2390 transitions. [2023-11-06 22:24:21,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2390 transitions. [2023-11-06 22:24:21,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:21,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2390 transitions. [2023-11-06 22:24:21,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 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) [2023-11-06 22:24:21,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 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) [2023-11-06 22:24:21,672 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 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) [2023-11-06 22:24:21,672 INFO L175 Difference]: Start difference. First operand has 196 places, 196 transitions, 406 flow. Second operand 6 states and 2390 transitions. [2023-11-06 22:24:21,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 406 transitions, 1426 flow [2023-11-06 22:24:21,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 406 transitions, 1424 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:24:21,694 INFO L231 Difference]: Finished difference. Result has 205 places, 276 transitions, 958 flow [2023-11-06 22:24:21,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=958, PETRI_PLACES=205, PETRI_TRANSITIONS=276} [2023-11-06 22:24:21,697 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 7 predicate places. [2023-11-06 22:24:21,701 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 276 transitions, 958 flow [2023-11-06 22:24:21,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.8333333333333) internal successors, (2099), 6 states have internal predecessors, (2099), 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) [2023-11-06 22:24:21,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:21,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:21,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:24:21,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting writer_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-06 22:24:21,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:21,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1226157500, now seen corresponding path program 1 times [2023-11-06 22:24:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:21,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960487174] [2023-11-06 22:24:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:22,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:22,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960487174] [2023-11-06 22:24:22,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960487174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:22,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:22,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:24:22,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413740884] [2023-11-06 22:24:22,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:22,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:22,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:22,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:22,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:23,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 674 [2023-11-06 22:24:23,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 276 transitions, 958 flow. Second operand has 6 states, 6 states have (on average 349.8333333333333) internal successors, (2099), 6 states have internal predecessors, (2099), 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) [2023-11-06 22:24:23,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:23,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 674 [2023-11-06 22:24:23,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand