./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 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_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ --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 7b71c781c26c072fdf5838e0877462128517513c3df1f3bde9f2474cb4533ecb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:41:32,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:41:32,679 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-23 22:41:32,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:41:32,686 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:41:32,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:41:32,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:41:32,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:41:32,715 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:41:32,715 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:41:32,716 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:41:32,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:41:32,718 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:41:32,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:41:32,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:41:32,719 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:41:32,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:41:32,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:41:32,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:41:32,722 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:41:32,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:41:32,728 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:41:32,728 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 22:41:32,729 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:41:32,729 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:41:32,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:41:32,730 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:41:32,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:41:32,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:41:32,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:41:32,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:41:32,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:41:32,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:41:32,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:41:32,734 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:41:32,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:41:32,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:41:32,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:41:32,735 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:41:32,736 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:41:32,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:41:32,736 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_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b71c781c26c072fdf5838e0877462128517513c3df1f3bde9f2474cb4533ecb [2023-11-23 22:41:33,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:41:33,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:41:33,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:41:33,086 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:41:33,087 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:41:33,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i [2023-11-23 22:41:36,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:41:36,514 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:41:36,515 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i [2023-11-23 22:41:36,530 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/data/551268eaa/3b2fd4b9d77449b58c18c168f090e693/FLAG075a7217c [2023-11-23 22:41:36,545 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/data/551268eaa/3b2fd4b9d77449b58c18c168f090e693 [2023-11-23 22:41:36,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:41:36,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:41:36,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:36,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:41:36,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:41:36,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:36" (1/1) ... [2023-11-23 22:41:36,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65258ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:36, skipping insertion in model container [2023-11-23 22:41:36,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:36" (1/1) ... [2023-11-23 22:41:36,611 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:41:36,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:36,976 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:41:37,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:37,071 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:41:37,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37 WrapperNode [2023-11-23 22:41:37,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:37,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:41:37,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:41:37,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:41:37,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,131 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 168 [2023-11-23 22:41:37,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:41:37,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:41:37,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:41:37,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:41:37,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:41:37,170 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:41:37,170 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:41:37,170 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:41:37,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (1/1) ... [2023-11-23 22:41:37,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:41:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:41:37,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:41:37,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:41:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 22:41:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 22:41:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:41:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-23 22:41:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-23 22:41:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:41:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:41:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 22:41:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:41:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:41:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-23 22:41:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-23 22:41:37,253 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:41:37,391 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:41:37,394 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:41:37,740 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:41:37,911 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:41:37,921 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:41:37,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:37 BoogieIcfgContainer [2023-11-23 22:41:37,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:41:37,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:41:37,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:41:37,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:41:37,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:41:36" (1/3) ... [2023-11-23 22:41:37,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7cda76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:41:37, skipping insertion in model container [2023-11-23 22:41:37,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:37" (2/3) ... [2023-11-23 22:41:37,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7cda76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:41:37, skipping insertion in model container [2023-11-23 22:41:37,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:37" (3/3) ... [2023-11-23 22:41:37,935 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2b.i [2023-11-23 22:41:37,945 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:41:37,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:41:37,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-23 22:41:37,954 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:41:38,051 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-23 22:41:38,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 216 transitions, 460 flow [2023-11-23 22:41:38,194 INFO L124 PetriNetUnfolderBase]: 4/212 cut-off events. [2023-11-23 22:41:38,194 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-23 22:41:38,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 212 events. 4/212 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 451 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 163. Up to 2 conditions per place. [2023-11-23 22:41:38,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 216 transitions, 460 flow [2023-11-23 22:41:38,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 198 transitions, 417 flow [2023-11-23 22:41:38,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:41:38,240 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=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;@314046e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:41:38,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-11-23 22:41:38,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:41:38,248 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2023-11-23 22:41:38,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:41:38,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:41:38,250 INFO L208 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] [2023-11-23 22:41:38,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writerErr0ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-23 22:41:38,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1833587175, now seen corresponding path program 1 times [2023-11-23 22:41:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:38,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423399242] [2023-11-23 22:41:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:38,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:38,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:38,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:38,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423399242] [2023-11-23 22:41:38,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423399242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:38,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:38,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:41:38,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527947499] [2023-11-23 22:41:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:38,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:41:38,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:38,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:41:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:41:38,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 216 [2023-11-23 22:41:38,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 198 transitions, 417 flow. Second operand has 2 states, 2 states have (on average 187.0) internal successors, (374), 2 states have internal predecessors, (374), 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) [2023-11-23 22:41:38,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:41:38,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 216 [2023-11-23 22:41:38,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:41:38,903 INFO L124 PetriNetUnfolderBase]: 51/884 cut-off events. [2023-11-23 22:41:38,904 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-23 22:41:38,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 884 events. 51/884 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5664 event pairs, 51 based on Foata normal form. 38/766 useless extension candidates. Maximal degree in co-relation 883. Up to 96 conditions per place. [2023-11-23 22:41:38,925 INFO L140 encePairwiseOnDemand]: 200/216 looper letters, 11 selfloop transitions, 0 changer transitions 0/176 dead transitions. [2023-11-23 22:41:38,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 176 transitions, 395 flow [2023-11-23 22:41:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:41:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-23 22:41:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 399 transitions. [2023-11-23 22:41:38,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9236111111111112 [2023-11-23 22:41:38,950 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 399 transitions. [2023-11-23 22:41:38,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 399 transitions. [2023-11-23 22:41:38,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:41:38,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 399 transitions. [2023-11-23 22:41:38,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 199.5) internal successors, (399), 2 states have internal predecessors, (399), 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) [2023-11-23 22:41:38,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 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) [2023-11-23 22:41:38,970 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 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) [2023-11-23 22:41:38,972 INFO L175 Difference]: Start difference. First operand has 207 places, 198 transitions, 417 flow. Second operand 2 states and 399 transitions. [2023-11-23 22:41:38,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 176 transitions, 395 flow [2023-11-23 22:41:38,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 382 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-23 22:41:38,987 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 360 flow [2023-11-23 22:41:38,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=360, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2023-11-23 22:41:38,994 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -24 predicate places. [2023-11-23 22:41:38,995 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 360 flow [2023-11-23 22:41:38,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 187.0) internal successors, (374), 2 states have internal predecessors, (374), 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) [2023-11-23 22:41:38,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:41:38,996 INFO L208 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] [2023-11-23 22:41:38,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:41:38,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-23 22:41:38,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash -961952738, now seen corresponding path program 1 times [2023-11-23 22:41:38,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:38,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856412854] [2023-11-23 22:41:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:39,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:39,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856412854] [2023-11-23 22:41:39,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856412854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:39,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:39,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:41:39,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60937360] [2023-11-23 22:41:39,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:39,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:41:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:39,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:41:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:39,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 216 [2023-11-23 22:41:39,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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) [2023-11-23 22:41:39,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:41:39,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 216 [2023-11-23 22:41:39,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:41:40,514 INFO L124 PetriNetUnfolderBase]: 1206/6432 cut-off events. [2023-11-23 22:41:40,514 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-23 22:41:40,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8474 conditions, 6432 events. 1206/6432 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 71318 event pairs, 825 based on Foata normal form. 0/5194 useless extension candidates. Maximal degree in co-relation 8471. Up to 1501 conditions per place. [2023-11-23 22:41:40,631 INFO L140 encePairwiseOnDemand]: 207/216 looper letters, 26 selfloop transitions, 8 changer transitions 0/189 dead transitions. [2023-11-23 22:41:40,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 189 transitions, 458 flow [2023-11-23 22:41:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:41:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:41:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 563 transitions. [2023-11-23 22:41:40,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8688271604938271 [2023-11-23 22:41:40,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 563 transitions. [2023-11-23 22:41:40,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 563 transitions. [2023-11-23 22:41:40,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:41:40,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 563 transitions. [2023-11-23 22:41:40,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 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) [2023-11-23 22:41:40,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:41:40,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:41:40,645 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 360 flow. Second operand 3 states and 563 transitions. [2023-11-23 22:41:40,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 189 transitions, 458 flow [2023-11-23 22:41:40,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 189 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:41:40,655 INFO L231 Difference]: Finished difference. Result has 187 places, 183 transitions, 422 flow [2023-11-23 22:41:40,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=187, PETRI_TRANSITIONS=183} [2023-11-23 22:41:40,657 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -20 predicate places. [2023-11-23 22:41:40,657 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 183 transitions, 422 flow [2023-11-23 22:41:40,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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) [2023-11-23 22:41:40,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:41:40,659 INFO L208 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] [2023-11-23 22:41:40,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:41:40,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting writerErr4ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-23 22:41:40,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:40,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1021328312, now seen corresponding path program 1 times [2023-11-23 22:41:40,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:40,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350246624] [2023-11-23 22:41:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:40,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:40,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:40,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350246624] [2023-11-23 22:41:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350246624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:40,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:40,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:41:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645612883] [2023-11-23 22:41:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:40,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:41:40,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:41:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:40,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 216 [2023-11-23 22:41:40,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 183 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2023-11-23 22:41:40,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:41:40,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 216 [2023-11-23 22:41:40,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:41:42,227 INFO L124 PetriNetUnfolderBase]: 846/6698 cut-off events. [2023-11-23 22:41:42,227 INFO L125 PetriNetUnfolderBase]: For 175/228 co-relation queries the response was YES. [2023-11-23 22:41:42,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8669 conditions, 6698 events. 846/6698 cut-off events. For 175/228 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 79931 event pairs, 528 based on Foata normal form. 2/5338 useless extension candidates. Maximal degree in co-relation 8664. Up to 821 conditions per place. [2023-11-23 22:41:42,342 INFO L140 encePairwiseOnDemand]: 208/216 looper letters, 19 selfloop transitions, 7 changer transitions 0/192 dead transitions. [2023-11-23 22:41:42,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 192 transitions, 496 flow [2023-11-23 22:41:42,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:41:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:41:42,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-11-23 22:41:42,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.875 [2023-11-23 22:41:42,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-11-23 22:41:42,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-11-23 22:41:42,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:41:42,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-11-23 22:41:42,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-11-23 22:41:42,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:41:42,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:41:42,351 INFO L175 Difference]: Start difference. First operand has 187 places, 183 transitions, 422 flow. Second operand 3 states and 567 transitions. [2023-11-23 22:41:42,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 192 transitions, 496 flow [2023-11-23 22:41:42,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 192 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:41:42,364 INFO L231 Difference]: Finished difference. Result has 189 places, 189 transitions, 460 flow [2023-11-23 22:41:42,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=189, PETRI_TRANSITIONS=189} [2023-11-23 22:41:42,365 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -18 predicate places. [2023-11-23 22:41:42,365 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 189 transitions, 460 flow [2023-11-23 22:41:42,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2023-11-23 22:41:42,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:41:42,366 INFO L208 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] [2023-11-23 22:41:42,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:41:42,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-23 22:41:42,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:42,368 INFO L85 PathProgramCache]: Analyzing trace with hash 142273567, now seen corresponding path program 1 times [2023-11-23 22:41:42,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:42,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730790533] [2023-11-23 22:41:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:42,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:42,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:42,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730790533] [2023-11-23 22:41:42,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730790533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:42,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:42,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:41:42,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637514458] [2023-11-23 22:41:42,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:42,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:41:42,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:42,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:41:42,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:42,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 216 [2023-11-23 22:41:42,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 189 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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) [2023-11-23 22:41:42,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:41:42,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 216 [2023-11-23 22:41:42,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:41:48,007 INFO L124 PetriNetUnfolderBase]: 7346/32738 cut-off events. [2023-11-23 22:41:48,007 INFO L125 PetriNetUnfolderBase]: For 6803/8092 co-relation queries the response was YES. [2023-11-23 22:41:48,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52991 conditions, 32738 events. 7346/32738 cut-off events. For 6803/8092 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 473789 event pairs, 2151 based on Foata normal form. 38/26642 useless extension candidates. Maximal degree in co-relation 52985. Up to 6420 conditions per place. [2023-11-23 22:41:48,527 INFO L140 encePairwiseOnDemand]: 202/216 looper letters, 45 selfloop transitions, 15 changer transitions 0/216 dead transitions. [2023-11-23 22:41:48,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 216 transitions, 680 flow [2023-11-23 22:41:48,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:41:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:41:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-11-23 22:41:48,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8703703703703703 [2023-11-23 22:41:48,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-11-23 22:41:48,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-11-23 22:41:48,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:41:48,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-11-23 22:41:48,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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) [2023-11-23 22:41:48,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:41:48,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:41:48,538 INFO L175 Difference]: Start difference. First operand has 189 places, 189 transitions, 460 flow. Second operand 3 states and 564 transitions. [2023-11-23 22:41:48,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 216 transitions, 680 flow [2023-11-23 22:41:48,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 216 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:41:48,577 INFO L231 Difference]: Finished difference. Result has 191 places, 204 transitions, 596 flow [2023-11-23 22:41:48,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=596, PETRI_PLACES=191, PETRI_TRANSITIONS=204} [2023-11-23 22:41:48,580 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -16 predicate places. [2023-11-23 22:41:48,580 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 204 transitions, 596 flow [2023-11-23 22:41:48,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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) [2023-11-23 22:41:48,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:41:48,582 INFO L208 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] [2023-11-23 22:41:48,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:41:48,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-23 22:41:48,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:48,584 INFO L85 PathProgramCache]: Analyzing trace with hash 654782796, now seen corresponding path program 1 times [2023-11-23 22:41:48,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:48,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478471652] [2023-11-23 22:41:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:48,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:48,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:48,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:48,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478471652] [2023-11-23 22:41:48,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478471652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:48,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:48,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:41:48,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292970001] [2023-11-23 22:41:48,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:48,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:41:48,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:41:48,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:41:48,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 216 [2023-11-23 22:41:48,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 204 transitions, 596 flow. Second operand has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 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) [2023-11-23 22:41:48,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:41:48,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 216 [2023-11-23 22:41:48,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:41:55,778 INFO L124 PetriNetUnfolderBase]: 10227/46861 cut-off events. [2023-11-23 22:41:55,778 INFO L125 PetriNetUnfolderBase]: For 12378/18283 co-relation queries the response was YES. [2023-11-23 22:41:56,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78087 conditions, 46861 events. 10227/46861 cut-off events. For 12378/18283 co-relation queries the response was YES. Maximal size of possible extension queue 1837. Compared 720511 event pairs, 2393 based on Foata normal form. 70/38780 useless extension candidates. Maximal degree in co-relation 78080. Up to 6188 conditions per place. [2023-11-23 22:41:56,481 INFO L140 encePairwiseOnDemand]: 206/216 looper letters, 31 selfloop transitions, 17 changer transitions 0/232 dead transitions. [2023-11-23 22:41:56,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 232 transitions, 781 flow [2023-11-23 22:41:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:41:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:41:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 945 transitions. [2023-11-23 22:41:56,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.875 [2023-11-23 22:41:56,491 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 945 transitions. [2023-11-23 22:41:56,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 945 transitions. [2023-11-23 22:41:56,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:41:56,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 945 transitions. [2023-11-23 22:41:56,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 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) [2023-11-23 22:41:56,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-11-23 22:41:56,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-11-23 22:41:56,500 INFO L175 Difference]: Start difference. First operand has 191 places, 204 transitions, 596 flow. Second operand 5 states and 945 transitions. [2023-11-23 22:41:56,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 232 transitions, 781 flow [2023-11-23 22:41:56,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 232 transitions, 751 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:41:56,537 INFO L231 Difference]: Finished difference. Result has 196 places, 218 transitions, 689 flow [2023-11-23 22:41:56,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=689, PETRI_PLACES=196, PETRI_TRANSITIONS=218} [2023-11-23 22:41:56,540 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -11 predicate places. [2023-11-23 22:41:56,541 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 218 transitions, 689 flow [2023-11-23 22:41:56,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 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) [2023-11-23 22:41:56,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:41:56,542 INFO L208 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] [2023-11-23 22:41:56,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:41:56,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-23 22:41:56,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2027329442, now seen corresponding path program 2 times [2023-11-23 22:41:56,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:56,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385175257] [2023-11-23 22:41:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:56,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:56,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:56,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385175257] [2023-11-23 22:41:56,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385175257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:56,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:56,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:41:56,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934124431] [2023-11-23 22:41:56,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:56,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:41:56,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:41:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:56,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 216 [2023-11-23 22:41:56,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 218 transitions, 689 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2023-11-23 22:41:56,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:41:56,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 216 [2023-11-23 22:41:56,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:41:59,038 INFO L124 PetriNetUnfolderBase]: 2580/18703 cut-off events. [2023-11-23 22:41:59,039 INFO L125 PetriNetUnfolderBase]: For 4201/4951 co-relation queries the response was YES. [2023-11-23 22:41:59,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29162 conditions, 18703 events. 2580/18703 cut-off events. For 4201/4951 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 266789 event pairs, 740 based on Foata normal form. 124/15416 useless extension candidates. Maximal degree in co-relation 29153. Up to 2615 conditions per place. [2023-11-23 22:41:59,348 INFO L140 encePairwiseOnDemand]: 210/216 looper letters, 19 selfloop transitions, 7 changer transitions 0/213 dead transitions. [2023-11-23 22:41:59,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 213 transitions, 699 flow [2023-11-23 22:41:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:41:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:41:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2023-11-23 22:41:59,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2023-11-23 22:41:59,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2023-11-23 22:41:59,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2023-11-23 22:41:59,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:41:59,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2023-11-23 22:41:59,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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) [2023-11-23 22:41:59,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:41:59,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:41:59,362 INFO L175 Difference]: Start difference. First operand has 196 places, 218 transitions, 689 flow. Second operand 3 states and 572 transitions. [2023-11-23 22:41:59,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 213 transitions, 699 flow [2023-11-23 22:41:59,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 213 transitions, 685 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-23 22:41:59,377 INFO L231 Difference]: Finished difference. Result has 197 places, 208 transitions, 631 flow [2023-11-23 22:41:59,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=197, PETRI_TRANSITIONS=208} [2023-11-23 22:41:59,382 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -10 predicate places. [2023-11-23 22:41:59,382 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 208 transitions, 631 flow [2023-11-23 22:41:59,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2023-11-23 22:41:59,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:41:59,383 INFO L208 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] [2023-11-23 22:41:59,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:41:59,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr4ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-23 22:41:59,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:59,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1023131579, now seen corresponding path program 1 times [2023-11-23 22:41:59,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:59,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811146312] [2023-11-23 22:41:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:59,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:59,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811146312] [2023-11-23 22:41:59,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811146312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:59,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:59,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:41:59,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117301625] [2023-11-23 22:41:59,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:59,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:41:59,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:59,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:41:59,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:59,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 216 [2023-11-23 22:41:59,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 208 transitions, 631 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2023-11-23 22:41:59,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:41:59,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 216 [2023-11-23 22:41:59,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:42:04,314 INFO L124 PetriNetUnfolderBase]: 5696/32229 cut-off events. [2023-11-23 22:42:04,314 INFO L125 PetriNetUnfolderBase]: For 12391/13563 co-relation queries the response was YES. [2023-11-23 22:42:04,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54606 conditions, 32229 events. 5696/32229 cut-off events. For 12391/13563 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 491346 event pairs, 2140 based on Foata normal form. 3/26222 useless extension candidates. Maximal degree in co-relation 54597. Up to 3938 conditions per place. [2023-11-23 22:42:04,759 INFO L140 encePairwiseOnDemand]: 210/216 looper letters, 33 selfloop transitions, 5 changer transitions 0/220 dead transitions. [2023-11-23 22:42:04,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 220 transitions, 761 flow [2023-11-23 22:42:04,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:42:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:42:04,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-11-23 22:42:04,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8703703703703703 [2023-11-23 22:42:04,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-11-23 22:42:04,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-11-23 22:42:04,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:42:04,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-11-23 22:42:04,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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) [2023-11-23 22:42:04,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:42:04,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:42:04,779 INFO L175 Difference]: Start difference. First operand has 197 places, 208 transitions, 631 flow. Second operand 3 states and 564 transitions. [2023-11-23 22:42:04,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 220 transitions, 761 flow [2023-11-23 22:42:04,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 220 transitions, 741 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:42:04,803 INFO L231 Difference]: Finished difference. Result has 199 places, 212 transitions, 655 flow [2023-11-23 22:42:04,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=655, PETRI_PLACES=199, PETRI_TRANSITIONS=212} [2023-11-23 22:42:04,806 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -8 predicate places. [2023-11-23 22:42:04,806 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 212 transitions, 655 flow [2023-11-23 22:42:04,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2023-11-23 22:42:04,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:42:04,809 INFO L208 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] [2023-11-23 22:42:04,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:42:04,809 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-23 22:42:04,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:04,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1214123678, now seen corresponding path program 1 times [2023-11-23 22:42:04,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:04,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520640938] [2023-11-23 22:42:04,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:04,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:04,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:04,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520640938] [2023-11-23 22:42:04,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520640938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:04,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:42:04,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758868076] [2023-11-23 22:42:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:04,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:42:04,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:04,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:42:04,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:42:04,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 216 [2023-11-23 22:42:04,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 212 transitions, 655 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2023-11-23 22:42:04,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:42:04,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 216 [2023-11-23 22:42:04,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:42:10,970 INFO L124 PetriNetUnfolderBase]: 6966/41333 cut-off events. [2023-11-23 22:42:10,971 INFO L125 PetriNetUnfolderBase]: For 17662/22469 co-relation queries the response was YES. [2023-11-23 22:42:11,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72246 conditions, 41333 events. 6966/41333 cut-off events. For 17662/22469 co-relation queries the response was YES. Maximal size of possible extension queue 1791. Compared 663353 event pairs, 2442 based on Foata normal form. 115/34051 useless extension candidates. Maximal degree in co-relation 72236. Up to 6960 conditions per place. [2023-11-23 22:42:11,457 INFO L140 encePairwiseOnDemand]: 208/216 looper letters, 43 selfloop transitions, 12 changer transitions 0/225 dead transitions. [2023-11-23 22:42:11,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 225 transitions, 827 flow [2023-11-23 22:42:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:42:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:42:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2023-11-23 22:42:11,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8626543209876543 [2023-11-23 22:42:11,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2023-11-23 22:42:11,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2023-11-23 22:42:11,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:42:11,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2023-11-23 22:42:11,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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) [2023-11-23 22:42:11,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:42:11,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:42:11,469 INFO L175 Difference]: Start difference. First operand has 199 places, 212 transitions, 655 flow. Second operand 3 states and 559 transitions. [2023-11-23 22:42:11,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 225 transitions, 827 flow [2023-11-23 22:42:11,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 225 transitions, 817 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:42:11,567 INFO L231 Difference]: Finished difference. Result has 201 places, 222 transitions, 767 flow [2023-11-23 22:42:11,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=767, PETRI_PLACES=201, PETRI_TRANSITIONS=222} [2023-11-23 22:42:11,569 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -6 predicate places. [2023-11-23 22:42:11,569 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 222 transitions, 767 flow [2023-11-23 22:42:11,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2023-11-23 22:42:11,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:42:11,570 INFO L208 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] [2023-11-23 22:42:11,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:42:11,570 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr5ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-23 22:42:11,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1269524252, now seen corresponding path program 1 times [2023-11-23 22:42:11,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:11,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808958488] [2023-11-23 22:42:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:11,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808958488] [2023-11-23 22:42:11,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808958488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:11,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:11,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:42:11,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77194429] [2023-11-23 22:42:11,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:11,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:42:11,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:11,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:42:11,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:42:11,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 216 [2023-11-23 22:42:11,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 222 transitions, 767 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2023-11-23 22:42:11,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:42:11,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 216 [2023-11-23 22:42:11,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:42:15,817 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][212], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 9#L699-3true, 122#L718-4true, 276#(= |#race~y~0| 0), 134#L700-1true, Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 97#L708-3true, 95#L708-4true, Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), 268#true, Black: 243#true, 228#true, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:15,818 INFO L294 olderBase$Statistics]: this new event has 81 ancestors and is cut-off event [2023-11-23 22:42:15,818 INFO L297 olderBase$Statistics]: existing Event has 81 ancestors and is cut-off event [2023-11-23 22:42:15,818 INFO L297 olderBase$Statistics]: existing Event has 81 ancestors and is cut-off event [2023-11-23 22:42:15,818 INFO L297 olderBase$Statistics]: existing Event has 81 ancestors and is cut-off event [2023-11-23 22:42:16,184 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][151], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 18#L700true, 122#L718-4true, 276#(= |#race~y~0| 0), Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), 97#L708-3true, Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 52#L700-1true, 95#L708-4true, Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), 268#true, Black: 243#true, 228#true, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:16,184 INFO L294 olderBase$Statistics]: this new event has 82 ancestors and is cut-off event [2023-11-23 22:42:16,184 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is cut-off event [2023-11-23 22:42:16,184 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is cut-off event [2023-11-23 22:42:16,184 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is cut-off event [2023-11-23 22:42:16,215 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][151], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 24#L700true, 122#L718-4true, 276#(= |#race~y~0| 0), 134#L700-1true, Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), 97#L708-3true, Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 95#L708-4true, Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), 268#true, Black: 243#true, 228#true, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:16,215 INFO L294 olderBase$Statistics]: this new event has 82 ancestors and is cut-off event [2023-11-23 22:42:16,216 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is cut-off event [2023-11-23 22:42:16,216 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is cut-off event [2023-11-23 22:42:16,216 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is cut-off event [2023-11-23 22:42:16,254 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][212], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 9#L699-3true, 122#L718-4true, 276#(= |#race~y~0| 0), Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), 97#L708-3true, Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 95#L708-4true, Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), 40#L700-3true, 268#true, Black: 243#true, 228#true, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:16,254 INFO L294 olderBase$Statistics]: this new event has 83 ancestors and is cut-off event [2023-11-23 22:42:16,254 INFO L297 olderBase$Statistics]: existing Event has 83 ancestors and is cut-off event [2023-11-23 22:42:16,254 INFO L297 olderBase$Statistics]: existing Event has 83 ancestors and is cut-off event [2023-11-23 22:42:16,254 INFO L297 olderBase$Statistics]: existing Event has 83 ancestors and is cut-off event [2023-11-23 22:42:16,359 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][211], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 122#L718-4true, 276#(= |#race~y~0| 0), Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 97#L708-3true, 95#L708-4true, Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), 268#true, Black: 243#true, 35#L699-3true, 228#true, 121#writerErr4ASSERT_VIOLATIONDATA_RACEtrue, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:16,359 INFO L294 olderBase$Statistics]: this new event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,359 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,359 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,359 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,606 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][151], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 18#L700true, 193#L700-3true, 122#L718-4true, 276#(= |#race~y~0| 0), Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 97#L708-3true, 95#L708-4true, Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), 268#true, Black: 243#true, 228#true, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:16,607 INFO L294 olderBase$Statistics]: this new event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,607 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,607 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,607 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,687 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][151], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 24#L700true, 122#L718-4true, 276#(= |#race~y~0| 0), Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 97#L708-3true, 95#L708-4true, 40#L700-3true, Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), 268#true, Black: 243#true, 228#true, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:16,687 INFO L294 olderBase$Statistics]: this new event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,687 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,687 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,687 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2023-11-23 22:42:16,769 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][151], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 18#L700true, 122#L718-4true, 276#(= |#race~y~0| 0), Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 97#L708-3true, 95#L708-4true, 125#L700-4true, Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), 268#true, Black: 243#true, 228#true, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:16,769 INFO L294 olderBase$Statistics]: this new event has 85 ancestors and is cut-off event [2023-11-23 22:42:16,769 INFO L297 olderBase$Statistics]: existing Event has 85 ancestors and is cut-off event [2023-11-23 22:42:16,769 INFO L297 olderBase$Statistics]: existing Event has 85 ancestors and is cut-off event [2023-11-23 22:42:16,769 INFO L297 olderBase$Statistics]: existing Event has 85 ancestors and is cut-off event [2023-11-23 22:42:16,796 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][151], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 18#L700true, 122#L718-4true, 276#(= |#race~y~0| 0), Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), 97#L708-3true, Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 95#L708-4true, Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), 268#true, Black: 243#true, 228#true, 121#writerErr4ASSERT_VIOLATIONDATA_RACEtrue, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:16,796 INFO L294 olderBase$Statistics]: this new event has 85 ancestors and is cut-off event [2023-11-23 22:42:16,797 INFO L297 olderBase$Statistics]: existing Event has 85 ancestors and is cut-off event [2023-11-23 22:42:16,797 INFO L297 olderBase$Statistics]: existing Event has 85 ancestors and is cut-off event [2023-11-23 22:42:16,797 INFO L297 olderBase$Statistics]: existing Event has 85 ancestors and is cut-off event [2023-11-23 22:42:17,291 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][151], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 18#L700true, 114#L701true, 122#L718-4true, 276#(= |#race~y~0| 0), Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 97#L708-3true, 95#L708-4true, Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), 268#true, Black: 243#true, 228#true, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:17,291 INFO L294 olderBase$Statistics]: this new event has 86 ancestors and is cut-off event [2023-11-23 22:42:17,291 INFO L297 olderBase$Statistics]: existing Event has 86 ancestors and is cut-off event [2023-11-23 22:42:17,291 INFO L297 olderBase$Statistics]: existing Event has 86 ancestors and is cut-off event [2023-11-23 22:42:17,291 INFO L297 olderBase$Statistics]: existing Event has 86 ancestors and is cut-off event [2023-11-23 22:42:19,226 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([440] L708-2-->L708-3: Formula: (= |v_#race~x~0_4| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][151], [readerThread1of1ForFork0InUse, Black: 252#(and (= ~r~0 0) (= ~w~0 0)), 18#L700true, 192#L719-7true, 276#(= |#race~y~0| 0), Black: 264#(= |#race~y~0| |readerThread1of1ForFork1_#t~nondet8#1|), Black: 233#(= |writerThread1of1ForFork3_#t~nondet6#1| |#race~x~0|), 97#L708-3true, 95#L708-4true, Black: 239#(= |writerThread1of1ForFork3_#t~nondet7#1| |#race~w~0|), Black: 270#(= |writerThread1of1ForFork2_#t~nondet6#1| |#race~x~0|), 268#true, Black: 243#true, 228#true, Black: 253#(and (<= 1 ~r~0) (= ~w~0 0))]) [2023-11-23 22:42:19,226 INFO L294 olderBase$Statistics]: this new event has 97 ancestors and is cut-off event [2023-11-23 22:42:19,227 INFO L297 olderBase$Statistics]: existing Event has 97 ancestors and is cut-off event [2023-11-23 22:42:19,227 INFO L297 olderBase$Statistics]: existing Event has 97 ancestors and is cut-off event [2023-11-23 22:42:19,227 INFO L297 olderBase$Statistics]: existing Event has 97 ancestors and is cut-off event [2023-11-23 22:42:19,659 INFO L124 PetriNetUnfolderBase]: 9140/54896 cut-off events. [2023-11-23 22:42:19,659 INFO L125 PetriNetUnfolderBase]: For 29217/32551 co-relation queries the response was YES. [2023-11-23 22:42:20,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100021 conditions, 54896 events. 9140/54896 cut-off events. For 29217/32551 co-relation queries the response was YES. Maximal size of possible extension queue 2493. Compared 921638 event pairs, 1959 based on Foata normal form. 246/46351 useless extension candidates. Maximal degree in co-relation 100010. Up to 7248 conditions per place. [2023-11-23 22:42:20,331 INFO L140 encePairwiseOnDemand]: 208/216 looper letters, 39 selfloop transitions, 7 changer transitions 0/240 dead transitions. [2023-11-23 22:42:20,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 240 transitions, 937 flow [2023-11-23 22:42:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:42:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:42:20,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2023-11-23 22:42:20,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8796296296296297 [2023-11-23 22:42:20,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2023-11-23 22:42:20,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2023-11-23 22:42:20,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:42:20,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2023-11-23 22:42:20,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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) [2023-11-23 22:42:20,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:42:20,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-11-23 22:42:20,339 INFO L175 Difference]: Start difference. First operand has 201 places, 222 transitions, 767 flow. Second operand 3 states and 570 transitions. [2023-11-23 22:42:20,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 240 transitions, 937 flow [2023-11-23 22:42:20,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 240 transitions, 897 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-23 22:42:20,424 INFO L231 Difference]: Finished difference. Result has 203 places, 228 transitions, 789 flow [2023-11-23 22:42:20,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=789, PETRI_PLACES=203, PETRI_TRANSITIONS=228} [2023-11-23 22:42:20,425 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -4 predicate places. [2023-11-23 22:42:20,425 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 228 transitions, 789 flow [2023-11-23 22:42:20,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2023-11-23 22:42:20,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:42:20,426 INFO L208 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] [2023-11-23 22:42:20,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:42:20,427 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting writerErr4ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-23 22:42:20,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:20,427 INFO L85 PathProgramCache]: Analyzing trace with hash 8790168, now seen corresponding path program 1 times [2023-11-23 22:42:20,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:20,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218551713] [2023-11-23 22:42:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:20,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:20,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:42:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:20,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:42:20,509 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:42:20,511 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location writerErr4ASSERT_VIOLATIONDATA_RACE (49 of 50 remaining) [2023-11-23 22:42:20,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONDATA_RACE (48 of 50 remaining) [2023-11-23 22:42:20,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr1ASSERT_VIOLATIONDATA_RACE (47 of 50 remaining) [2023-11-23 22:42:20,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr2ASSERT_VIOLATIONDATA_RACE (46 of 50 remaining) [2023-11-23 22:42:20,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr3ASSERT_VIOLATIONDATA_RACE (45 of 50 remaining) [2023-11-23 22:42:20,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr4ASSERT_VIOLATIONDATA_RACE (44 of 50 remaining) [2023-11-23 22:42:20,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr5ASSERT_VIOLATIONDATA_RACE (43 of 50 remaining) [2023-11-23 22:42:20,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr6ASSERT_VIOLATIONDATA_RACE (42 of 50 remaining) [2023-11-23 22:42:20,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr7ASSERT_VIOLATIONDATA_RACE (41 of 50 remaining) [2023-11-23 22:42:20,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr8ASSERT_VIOLATIONDATA_RACE (40 of 50 remaining) [2023-11-23 22:42:20,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (39 of 50 remaining) [2023-11-23 22:42:20,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (38 of 50 remaining) [2023-11-23 22:42:20,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (37 of 50 remaining) [2023-11-23 22:42:20,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (36 of 50 remaining) [2023-11-23 22:42:20,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 50 remaining) [2023-11-23 22:42:20,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 50 remaining) [2023-11-23 22:42:20,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 50 remaining) [2023-11-23 22:42:20,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 50 remaining) [2023-11-23 22:42:20,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr0ASSERT_VIOLATIONDATA_RACE (31 of 50 remaining) [2023-11-23 22:42:20,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr1ASSERT_VIOLATIONDATA_RACE (30 of 50 remaining) [2023-11-23 22:42:20,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr2ASSERT_VIOLATIONDATA_RACE (29 of 50 remaining) [2023-11-23 22:42:20,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr3ASSERT_VIOLATIONDATA_RACE (28 of 50 remaining) [2023-11-23 22:42:20,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr4ASSERT_VIOLATIONDATA_RACE (27 of 50 remaining) [2023-11-23 22:42:20,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONDATA_RACE (26 of 50 remaining) [2023-11-23 22:42:20,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr1ASSERT_VIOLATIONDATA_RACE (25 of 50 remaining) [2023-11-23 22:42:20,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr2ASSERT_VIOLATIONDATA_RACE (24 of 50 remaining) [2023-11-23 22:42:20,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr3ASSERT_VIOLATIONDATA_RACE (23 of 50 remaining) [2023-11-23 22:42:20,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr4ASSERT_VIOLATIONDATA_RACE (22 of 50 remaining) [2023-11-23 22:42:20,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr5ASSERT_VIOLATIONDATA_RACE (21 of 50 remaining) [2023-11-23 22:42:20,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr6ASSERT_VIOLATIONDATA_RACE (20 of 50 remaining) [2023-11-23 22:42:20,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr7ASSERT_VIOLATIONDATA_RACE (19 of 50 remaining) [2023-11-23 22:42:20,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr8ASSERT_VIOLATIONDATA_RACE (18 of 50 remaining) [2023-11-23 22:42:20,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONDATA_RACE (17 of 50 remaining) [2023-11-23 22:42:20,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr1ASSERT_VIOLATIONDATA_RACE (16 of 50 remaining) [2023-11-23 22:42:20,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr2ASSERT_VIOLATIONDATA_RACE (15 of 50 remaining) [2023-11-23 22:42:20,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr3ASSERT_VIOLATIONDATA_RACE (14 of 50 remaining) [2023-11-23 22:42:20,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr4ASSERT_VIOLATIONDATA_RACE (13 of 50 remaining) [2023-11-23 22:42:20,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr5ASSERT_VIOLATIONDATA_RACE (12 of 50 remaining) [2023-11-23 22:42:20,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr6ASSERT_VIOLATIONDATA_RACE (11 of 50 remaining) [2023-11-23 22:42:20,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr7ASSERT_VIOLATIONDATA_RACE (10 of 50 remaining) [2023-11-23 22:42:20,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr8ASSERT_VIOLATIONDATA_RACE (9 of 50 remaining) [2023-11-23 22:42:20,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr0ASSERT_VIOLATIONDATA_RACE (8 of 50 remaining) [2023-11-23 22:42:20,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr1ASSERT_VIOLATIONDATA_RACE (7 of 50 remaining) [2023-11-23 22:42:20,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr2ASSERT_VIOLATIONDATA_RACE (6 of 50 remaining) [2023-11-23 22:42:20,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr3ASSERT_VIOLATIONDATA_RACE (5 of 50 remaining) [2023-11-23 22:42:20,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr0ASSERT_VIOLATIONDATA_RACE (4 of 50 remaining) [2023-11-23 22:42:20,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr1ASSERT_VIOLATIONDATA_RACE (3 of 50 remaining) [2023-11-23 22:42:20,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr2ASSERT_VIOLATIONDATA_RACE (2 of 50 remaining) [2023-11-23 22:42:20,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr3ASSERT_VIOLATIONDATA_RACE (1 of 50 remaining) [2023-11-23 22:42:20,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr4ASSERT_VIOLATIONDATA_RACE (0 of 50 remaining) [2023-11-23 22:42:20,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:42:20,536 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:20,546 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:42:20,547 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:42:20,607 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-23 22:42:20,608 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated [2023-11-23 22:42:20,609 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 22:42:20,610 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 22:42:20,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:42:20 BasicIcfg [2023-11-23 22:42:20,623 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:42:20,624 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:42:20,624 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:42:20,625 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:42:20,625 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:37" (3/4) ... [2023-11-23 22:42:20,627 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 22:42:20,628 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:42:20,629 INFO L158 Benchmark]: Toolchain (without parser) took 44079.99ms. Allocated memory was 159.4MB in the beginning and 13.0GB in the end (delta: 12.8GB). Free memory was 119.5MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-11-23 22:42:20,630 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:42:20,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.07ms. Allocated memory is still 159.4MB. Free memory was 119.2MB in the beginning and 99.1MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 22:42:20,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.34ms. Allocated memory is still 159.4MB. Free memory was 99.1MB in the beginning and 96.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:42:20,633 INFO L158 Benchmark]: Boogie Preprocessor took 36.21ms. Allocated memory is still 159.4MB. Free memory was 96.4MB in the beginning and 94.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:42:20,633 INFO L158 Benchmark]: RCFGBuilder took 753.20ms. Allocated memory is still 159.4MB. Free memory was 94.3MB in the beginning and 122.8MB in the end (delta: -28.5MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2023-11-23 22:42:20,634 INFO L158 Benchmark]: TraceAbstraction took 42698.33ms. Allocated memory was 159.4MB in the beginning and 13.0GB in the end (delta: 12.8GB). Free memory was 121.9MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-11-23 22:42:20,634 INFO L158 Benchmark]: Witness Printer took 4.51ms. Allocated memory is still 13.0GB. Free memory is still 10.9GB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:42:20,636 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.07ms. Allocated memory is still 159.4MB. Free memory was 119.2MB in the beginning and 99.1MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.34ms. Allocated memory is still 159.4MB. Free memory was 99.1MB in the beginning and 96.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.21ms. Allocated memory is still 159.4MB. Free memory was 96.4MB in the beginning and 94.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 753.20ms. Allocated memory is still 159.4MB. Free memory was 94.3MB in the beginning and 122.8MB in the end (delta: -28.5MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * TraceAbstraction took 42698.33ms. Allocated memory was 159.4MB in the beginning and 13.0GB in the end (delta: 12.8GB). Free memory was 121.9MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 4.51ms. Allocated memory is still 13.0GB. Free memory is still 10.9GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 700]: Data race detected [2023-11-23 22:42:20,673 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-23 22:42:20,673 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated [2023-11-23 22:42:20,679 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 22:42:20,681 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 22:42:20,698 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-23 22:42:20,699 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated [2023-11-23 22:42:20,701 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 22:42:20,701 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated Data race detected The following path leads to a data race: [L688] 0 int w=0, r=0, x, y; VAL [r=0, w=0, x=0, y=0] [L714] 0 pthread_t t1, t2, t3, t4; VAL [r=0, t1={5:0}, t2={6:0}, t3={7:0}, t4={3:0}, w=0, x=0, y=0] [L715] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, t1={5:0}, t2={6:0}, t3={7:0}, t4={3:0}, w=0, x=0, y=0] [L716] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, t1={5:0}, t2={6:0}, t3={7:0}, t4={3:0}, w=0, x=0, y=0] [L698] CALL 1 __VERIFIER_atomic_take_write_lock() [L690] EXPR 1 w==0 [L690] EXPR 1 w==0 && r==0 [L690] EXPR 1 r==0 [L690] EXPR 1 w==0 && r==0 [L690] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L690] RET 1 assume_abort_if_not(w==0 && r==0) [L691] 1 w = 1 [L698] RET 1 __VERIFIER_atomic_take_write_lock() [L704] 2 int l; VAL [arg={0:0}, arg={0:0}, r=0, w=1, x=0, y=0] [L699] 1 x = 3 VAL [arg={0:0}, arg={0:0}, r=0, w=1, x=3, y=0] [L700] 1 w = 0 VAL [arg={0:0}, arg={0:0}, r=0, w=0, x=3, y=0] [L705] CALL 2 __VERIFIER_atomic_take_read_lock() [L694] EXPR 2 w==0 [L694] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L694] RET 2 assume_abort_if_not(w==0) [L695] EXPR 2 r+1 [L695] 2 r = r+1 [L705] RET 2 __VERIFIER_atomic_take_read_lock() [L700] 1 w = 0 VAL [arg={0:0}, arg={0:0}, r=1, w=0, x=3, y=0] Now there is a data race on ~w~0 between C: w==0 [694] and C: w = 0 [700] - UnprovableResult [Line: 694]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 716]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 279 locations, 50 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 42.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 40.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 241 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 418 IncrementalHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 52 mSDtfsCounter, 418 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=789occurred in iteration=9, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-23 22:42:20,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcc1501-28ad-4015-ab65-75eda50ba463/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE