./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:21:43,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:21:43,555 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:21:43,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:21:43,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:21:43,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:21:43,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:21:43,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:21:43,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:21:43,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:21:43,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:21:43,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:21:43,612 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:21:43,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:21:43,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:21:43,614 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:21:43,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:21:43,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:21:43,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:21:43,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:21:43,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:21:43,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:21:43,617 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:21:43,619 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:21:43,620 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:21:43,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:21:43,620 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:21:43,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:21:43,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:21:43,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:21:43,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:43,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:21:43,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:21:43,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:21:43,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:21:43,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:21:43,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:21:43,625 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:21:43,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:21:43,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:21:43,626 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:21:43,626 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_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b [2023-11-06 22:21:43,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:21:43,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:21:43,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:21:43,986 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:21:43,986 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:21:43,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2023-11-06 22:21:47,063 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:21:47,391 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:21:47,392 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2023-11-06 22:21:47,414 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/data/c0f74e8fb/df08cab5117342c18a2799ff68670fc7/FLAGaa7139776 [2023-11-06 22:21:47,434 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/data/c0f74e8fb/df08cab5117342c18a2799ff68670fc7 [2023-11-06 22:21:47,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:21:47,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:21:47,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:47,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:21:47,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:21:47,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:47" (1/1) ... [2023-11-06 22:21:47,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f11bd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:47, skipping insertion in model container [2023-11-06 22:21:47,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:47" (1/1) ... [2023-11-06 22:21:47,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:21:47,710 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:21:48,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:48,081 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:21:48,094 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:21:48,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:48,189 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:21:48,197 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:21:48,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48 WrapperNode [2023-11-06 22:21:48,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:48,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:48,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:21:48,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:21:48,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,286 INFO L138 Inliner]: procedures = 224, calls = 44, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 229 [2023-11-06 22:21:48,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:48,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:21:48,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:21:48,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:21:48,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:21:48,379 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:21:48,379 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:21:48,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:21:48,380 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (1/1) ... [2023-11-06 22:21:48,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:48,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:48,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:21:48,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be27fe4-2434-44b8-9ff3-3c41a450f793/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:21:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2023-11-06 22:21:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2023-11-06 22:21:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:21:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:21:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:21:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:21:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:21:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:21:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:21:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:21:48,493 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:21:48,668 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:21:48,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:21:49,308 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:21:49,319 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:21:49,319 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:21:49,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:49 BoogieIcfgContainer [2023-11-06 22:21:49,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:21:49,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:21:49,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:21:49,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:21:49,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:21:47" (1/3) ... [2023-11-06 22:21:49,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcac37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:49, skipping insertion in model container [2023-11-06 22:21:49,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:48" (2/3) ... [2023-11-06 22:21:49,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcac37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:49, skipping insertion in model container [2023-11-06 22:21:49,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:49" (3/3) ... [2023-11-06 22:21:49,330 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2023-11-06 22:21:49,339 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:21:49,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:21:49,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-11-06 22:21:49,351 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:21:49,455 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:21:49,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 279 transitions, 565 flow [2023-11-06 22:21:49,674 INFO L124 PetriNetUnfolderBase]: 13/278 cut-off events. [2023-11-06 22:21:49,676 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:21:49,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 278 events. 13/278 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 618 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 225. Up to 2 conditions per place. [2023-11-06 22:21:49,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 279 transitions, 565 flow [2023-11-06 22:21:49,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 269 transitions, 541 flow [2023-11-06 22:21:49,706 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:21:49,721 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 269 transitions, 541 flow [2023-11-06 22:21:49,726 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 269 transitions, 541 flow [2023-11-06 22:21:49,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 269 transitions, 541 flow [2023-11-06 22:21:49,814 INFO L124 PetriNetUnfolderBase]: 13/269 cut-off events. [2023-11-06 22:21:49,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:49,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 269 events. 13/269 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 552 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 225. Up to 2 conditions per place. [2023-11-06 22:21:49,838 INFO L119 LiptonReduction]: Number of co-enabled transitions 24112 [2023-11-06 22:22:01,639 INFO L134 LiptonReduction]: Checked pairs total: 139802 [2023-11-06 22:22:01,639 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-11-06 22:22:01,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:22:01,662 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67faef32, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:22:01,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-06 22:22:01,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:22:01,664 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:22:01,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:22:01,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:01,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:22:01,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:01,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:01,671 INFO L85 PathProgramCache]: Analyzing trace with hash 979, now seen corresponding path program 1 times [2023-11-06 22:22:01,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:01,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963072629] [2023-11-06 22:22:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:01,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:01,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:01,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963072629] [2023-11-06 22:22:01,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963072629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:01,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:01,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:22:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130754413] [2023-11-06 22:22:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:01,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:22:01,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:01,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:22:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:22:01,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 477 [2023-11-06 22:22:01,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 245 flow. Second operand has 2 states, 2 states have (on average 268.5) internal successors, (537), 2 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:01,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:01,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 477 [2023-11-06 22:22:01,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:02,063 INFO L124 PetriNetUnfolderBase]: 137/797 cut-off events. [2023-11-06 22:22:02,064 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:22:02,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 797 events. 137/797 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4842 event pairs, 87 based on Foata normal form. 39/740 useless extension candidates. Maximal degree in co-relation 1039. Up to 247 conditions per place. [2023-11-06 22:22:02,071 INFO L140 encePairwiseOnDemand]: 470/477 looper letters, 24 selfloop transitions, 0 changer transitions 0/114 dead transitions. [2023-11-06 22:22:02,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 114 transitions, 279 flow [2023-11-06 22:22:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:22:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:22:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 567 transitions. [2023-11-06 22:22:02,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2023-11-06 22:22:02,091 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 567 transitions. [2023-11-06 22:22:02,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 567 transitions. [2023-11-06 22:22:02,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:02,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 567 transitions. [2023-11-06 22:22:02,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 283.5) internal successors, (567), 2 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) [2023-11-06 22:22:02,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:02,109 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:02,111 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 245 flow. Second operand 2 states and 567 transitions. [2023-11-06 22:22:02,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 114 transitions, 279 flow [2023-11-06 22:22:02,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 114 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:02,119 INFO L231 Difference]: Finished difference. Result has 114 places, 114 transitions, 230 flow [2023-11-06 22:22:02,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=230, PETRI_PLACES=114, PETRI_TRANSITIONS=114} [2023-11-06 22:22:02,125 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, -2 predicate places. [2023-11-06 22:22:02,125 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 114 transitions, 230 flow [2023-11-06 22:22:02,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 268.5) internal successors, (537), 2 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:02,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:02,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:02,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:22:02,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:02,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:02,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1848050519, now seen corresponding path program 1 times [2023-11-06 22:22:02,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:02,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148985755] [2023-11-06 22:22:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:02,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:02,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:02,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148985755] [2023-11-06 22:22:02,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148985755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:02,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:02,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:22:02,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336123590] [2023-11-06 22:22:02,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:02,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:02,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:02,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 477 [2023-11-06 22:22:02,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 114 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:02,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:02,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 477 [2023-11-06 22:22:02,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:02,783 INFO L124 PetriNetUnfolderBase]: 252/1397 cut-off events. [2023-11-06 22:22:02,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:22:02,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 1397 events. 252/1397 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9108 event pairs, 126 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1848. Up to 248 conditions per place. [2023-11-06 22:22:02,799 INFO L140 encePairwiseOnDemand]: 474/477 looper letters, 42 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-11-06 22:22:02,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 134 transitions, 358 flow [2023-11-06 22:22:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2023-11-06 22:22:02,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807127882599581 [2023-11-06 22:22:02,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2023-11-06 22:22:02,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2023-11-06 22:22:02,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:02,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2023-11-06 22:22:02,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:02,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:02,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:02,822 INFO L175 Difference]: Start difference. First operand has 114 places, 114 transitions, 230 flow. Second operand 3 states and 831 transitions. [2023-11-06 22:22:02,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 134 transitions, 358 flow [2023-11-06 22:22:02,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 134 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:02,832 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 242 flow [2023-11-06 22:22:02,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2023-11-06 22:22:02,833 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 1 predicate places. [2023-11-06 22:22:02,834 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 242 flow [2023-11-06 22:22:02,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:02,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:02,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:02,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:22:02,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:02,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:02,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1061040120, now seen corresponding path program 1 times [2023-11-06 22:22:02,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:02,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659305982] [2023-11-06 22:22:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:03,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:03,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659305982] [2023-11-06 22:22:03,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659305982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:03,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:03,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:22:03,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27971512] [2023-11-06 22:22:03,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:03,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:22:03,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:03,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:22:03,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:22:04,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 477 [2023-11-06 22:22:04,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 227.5) internal successors, (1365), 6 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:04,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:04,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 477 [2023-11-06 22:22:04,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:05,385 INFO L124 PetriNetUnfolderBase]: 1873/5612 cut-off events. [2023-11-06 22:22:05,386 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-06 22:22:05,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9196 conditions, 5612 events. 1873/5612 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 44122 event pairs, 403 based on Foata normal form. 0/5146 useless extension candidates. Maximal degree in co-relation 9191. Up to 2038 conditions per place. [2023-11-06 22:22:05,424 INFO L140 encePairwiseOnDemand]: 453/477 looper letters, 105 selfloop transitions, 33 changer transitions 0/200 dead transitions. [2023-11-06 22:22:05,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 200 transitions, 688 flow [2023-11-06 22:22:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1496 transitions. [2023-11-06 22:22:05,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522711390635919 [2023-11-06 22:22:05,431 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1496 transitions. [2023-11-06 22:22:05,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1496 transitions. [2023-11-06 22:22:05,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:05,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1496 transitions. [2023-11-06 22:22:05,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.33333333333334) internal successors, (1496), 6 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:05,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:05,449 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:05,449 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 242 flow. Second operand 6 states and 1496 transitions. [2023-11-06 22:22:05,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 200 transitions, 688 flow [2023-11-06 22:22:05,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 200 transitions, 686 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:05,456 INFO L231 Difference]: Finished difference. Result has 126 places, 147 transitions, 482 flow [2023-11-06 22:22:05,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=126, PETRI_TRANSITIONS=147} [2023-11-06 22:22:05,457 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 10 predicate places. [2023-11-06 22:22:05,457 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 147 transitions, 482 flow [2023-11-06 22:22:05,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.5) internal successors, (1365), 6 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:05,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:05,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:22:05,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:05,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:05,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2107285353, now seen corresponding path program 1 times [2023-11-06 22:22:05,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:05,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919658032] [2023-11-06 22:22:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:05,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:05,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:05,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919658032] [2023-11-06 22:22:05,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919658032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:05,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:05,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:22:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500294331] [2023-11-06 22:22:05,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:05,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:22:05,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:05,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:22:05,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:22:06,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 477 [2023-11-06 22:22:06,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 147 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:06,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:06,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 477 [2023-11-06 22:22:06,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:07,921 INFO L124 PetriNetUnfolderBase]: 1722/6474 cut-off events. [2023-11-06 22:22:07,921 INFO L125 PetriNetUnfolderBase]: For 1089/1094 co-relation queries the response was YES. [2023-11-06 22:22:07,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12256 conditions, 6474 events. 1722/6474 cut-off events. For 1089/1094 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 53901 event pairs, 507 based on Foata normal form. 0/6073 useless extension candidates. Maximal degree in co-relation 12247. Up to 2502 conditions per place. [2023-11-06 22:22:07,978 INFO L140 encePairwiseOnDemand]: 454/477 looper letters, 103 selfloop transitions, 53 changer transitions 0/238 dead transitions. [2023-11-06 22:22:07,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 238 transitions, 1056 flow [2023-11-06 22:22:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:07,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1507 transitions. [2023-11-06 22:22:07,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526554856743536 [2023-11-06 22:22:07,986 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1507 transitions. [2023-11-06 22:22:07,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1507 transitions. [2023-11-06 22:22:07,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:07,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1507 transitions. [2023-11-06 22:22:07,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.16666666666666) internal successors, (1507), 6 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:08,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:08,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:08,003 INFO L175 Difference]: Start difference. First operand has 126 places, 147 transitions, 482 flow. Second operand 6 states and 1507 transitions. [2023-11-06 22:22:08,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 238 transitions, 1056 flow [2023-11-06 22:22:08,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 238 transitions, 1056 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:08,018 INFO L231 Difference]: Finished difference. Result has 136 places, 198 transitions, 890 flow [2023-11-06 22:22:08,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=890, PETRI_PLACES=136, PETRI_TRANSITIONS=198} [2023-11-06 22:22:08,019 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 20 predicate places. [2023-11-06 22:22:08,019 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 198 transitions, 890 flow [2023-11-06 22:22:08,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:08,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:08,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:08,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:22:08,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:08,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:08,022 INFO L85 PathProgramCache]: Analyzing trace with hash -824648111, now seen corresponding path program 1 times [2023-11-06 22:22:08,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:08,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281049613] [2023-11-06 22:22:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:08,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:08,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281049613] [2023-11-06 22:22:08,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281049613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:08,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:08,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:22:08,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878033692] [2023-11-06 22:22:08,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:08,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:22:08,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:22:08,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:22:09,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 477 [2023-11-06 22:22:09,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 198 transitions, 890 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:09,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:09,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 477 [2023-11-06 22:22:09,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:10,971 INFO L124 PetriNetUnfolderBase]: 2163/7453 cut-off events. [2023-11-06 22:22:10,971 INFO L125 PetriNetUnfolderBase]: For 3787/3896 co-relation queries the response was YES. [2023-11-06 22:22:11,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17375 conditions, 7453 events. 2163/7453 cut-off events. For 3787/3896 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 62410 event pairs, 515 based on Foata normal form. 192/7245 useless extension candidates. Maximal degree in co-relation 17361. Up to 3068 conditions per place. [2023-11-06 22:22:11,037 INFO L140 encePairwiseOnDemand]: 456/477 looper letters, 141 selfloop transitions, 86 changer transitions 0/319 dead transitions. [2023-11-06 22:22:11,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 319 transitions, 1928 flow [2023-11-06 22:22:11,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1503 transitions. [2023-11-06 22:22:11,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251572327044025 [2023-11-06 22:22:11,044 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1503 transitions. [2023-11-06 22:22:11,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1503 transitions. [2023-11-06 22:22:11,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:11,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1503 transitions. [2023-11-06 22:22:11,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.5) internal successors, (1503), 6 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:11,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:11,059 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:11,060 INFO L175 Difference]: Start difference. First operand has 136 places, 198 transitions, 890 flow. Second operand 6 states and 1503 transitions. [2023-11-06 22:22:11,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 319 transitions, 1928 flow [2023-11-06 22:22:11,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 319 transitions, 1928 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:11,089 INFO L231 Difference]: Finished difference. Result has 145 places, 279 transitions, 1684 flow [2023-11-06 22:22:11,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1684, PETRI_PLACES=145, PETRI_TRANSITIONS=279} [2023-11-06 22:22:11,092 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 29 predicate places. [2023-11-06 22:22:11,093 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 279 transitions, 1684 flow [2023-11-06 22:22:11,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:11,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:11,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:11,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:22:11,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:11,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:11,095 INFO L85 PathProgramCache]: Analyzing trace with hash -197824064, now seen corresponding path program 1 times [2023-11-06 22:22:11,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:11,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767279197] [2023-11-06 22:22:11,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:11,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:11,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:11,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767279197] [2023-11-06 22:22:11,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767279197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:11,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:11,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:22:11,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085987779] [2023-11-06 22:22:11,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:11,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:22:11,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:11,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:22:11,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:22:12,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 477 [2023-11-06 22:22:12,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 279 transitions, 1684 flow. Second operand has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:12,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:12,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 477 [2023-11-06 22:22:12,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:14,080 INFO L124 PetriNetUnfolderBase]: 2454/8529 cut-off events. [2023-11-06 22:22:14,080 INFO L125 PetriNetUnfolderBase]: For 7609/8026 co-relation queries the response was YES. [2023-11-06 22:22:14,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22704 conditions, 8529 events. 2454/8529 cut-off events. For 7609/8026 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 74624 event pairs, 319 based on Foata normal form. 166/8189 useless extension candidates. Maximal degree in co-relation 22685. Up to 2569 conditions per place. [2023-11-06 22:22:14,148 INFO L140 encePairwiseOnDemand]: 465/477 looper letters, 205 selfloop transitions, 63 changer transitions 0/410 dead transitions. [2023-11-06 22:22:14,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 410 transitions, 2904 flow [2023-11-06 22:22:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:14,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1566 transitions. [2023-11-06 22:22:14,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2023-11-06 22:22:14,156 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1566 transitions. [2023-11-06 22:22:14,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1566 transitions. [2023-11-06 22:22:14,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:14,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1566 transitions. [2023-11-06 22:22:14,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,172 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,172 INFO L175 Difference]: Start difference. First operand has 145 places, 279 transitions, 1684 flow. Second operand 6 states and 1566 transitions. [2023-11-06 22:22:14,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 410 transitions, 2904 flow [2023-11-06 22:22:14,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 410 transitions, 2904 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:14,243 INFO L231 Difference]: Finished difference. Result has 155 places, 338 transitions, 2356 flow [2023-11-06 22:22:14,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2356, PETRI_PLACES=155, PETRI_TRANSITIONS=338} [2023-11-06 22:22:14,245 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 39 predicate places. [2023-11-06 22:22:14,245 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 338 transitions, 2356 flow [2023-11-06 22:22:14,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:14,246 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] [2023-11-06 22:22:14,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:22:14,246 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_fnErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:14,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:14,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1658312877, now seen corresponding path program 1 times [2023-11-06 22:22:14,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:14,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815542914] [2023-11-06 22:22:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:14,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:14,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:14,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815542914] [2023-11-06 22:22:14,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815542914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:14,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:14,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:22:14,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321847233] [2023-11-06 22:22:14,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:14,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:22:14,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:14,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:22:14,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:22:15,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 477 [2023-11-06 22:22:15,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 338 transitions, 2356 flow. Second operand has 6 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:15,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 477 [2023-11-06 22:22:15,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:17,470 INFO L124 PetriNetUnfolderBase]: 3081/10394 cut-off events. [2023-11-06 22:22:17,470 INFO L125 PetriNetUnfolderBase]: For 13708/14270 co-relation queries the response was YES. [2023-11-06 22:22:17,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29916 conditions, 10394 events. 3081/10394 cut-off events. For 13708/14270 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 93763 event pairs, 439 based on Foata normal form. 202/10099 useless extension candidates. Maximal degree in co-relation 29892. Up to 3979 conditions per place. [2023-11-06 22:22:17,546 INFO L140 encePairwiseOnDemand]: 456/477 looper letters, 284 selfloop transitions, 70 changer transitions 0/454 dead transitions. [2023-11-06 22:22:17,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 454 transitions, 3684 flow [2023-11-06 22:22:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1524 transitions. [2023-11-06 22:22:17,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324947589098532 [2023-11-06 22:22:17,553 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1524 transitions. [2023-11-06 22:22:17,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1524 transitions. [2023-11-06 22:22:17,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:17,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1524 transitions. [2023-11-06 22:22:17,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:17,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:17,565 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:17,566 INFO L175 Difference]: Start difference. First operand has 155 places, 338 transitions, 2356 flow. Second operand 6 states and 1524 transitions. [2023-11-06 22:22:17,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 454 transitions, 3684 flow [2023-11-06 22:22:17,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 454 transitions, 3684 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:17,633 INFO L231 Difference]: Finished difference. Result has 165 places, 400 transitions, 3130 flow [2023-11-06 22:22:17,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3130, PETRI_PLACES=165, PETRI_TRANSITIONS=400} [2023-11-06 22:22:17,635 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 49 predicate places. [2023-11-06 22:22:17,635 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 400 transitions, 3130 flow [2023-11-06 22:22:17,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:17,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:17,637 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] [2023-11-06 22:22:17,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:22:17,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reader_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:17,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:17,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1131555919, now seen corresponding path program 1 times [2023-11-06 22:22:17,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:17,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024326863] [2023-11-06 22:22:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:17,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:18,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:18,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024326863] [2023-11-06 22:22:18,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024326863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:18,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:18,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:22:18,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259850543] [2023-11-06 22:22:18,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:18,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:22:18,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:22:18,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:22:18,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 477 [2023-11-06 22:22:18,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 400 transitions, 3130 flow. Second operand has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:18,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:18,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 477 [2023-11-06 22:22:18,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:20,960 INFO L124 PetriNetUnfolderBase]: 2955/10487 cut-off events. [2023-11-06 22:22:20,960 INFO L125 PetriNetUnfolderBase]: For 19808/20317 co-relation queries the response was YES. [2023-11-06 22:22:21,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32920 conditions, 10487 events. 2955/10487 cut-off events. For 19808/20317 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 96016 event pairs, 569 based on Foata normal form. 165/10208 useless extension candidates. Maximal degree in co-relation 32891. Up to 4328 conditions per place. [2023-11-06 22:22:21,046 INFO L140 encePairwiseOnDemand]: 463/477 looper letters, 331 selfloop transitions, 81 changer transitions 0/528 dead transitions. [2023-11-06 22:22:21,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 528 transitions, 4954 flow [2023-11-06 22:22:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1534 transitions. [2023-11-06 22:22:21,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359888190076869 [2023-11-06 22:22:21,053 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1534 transitions. [2023-11-06 22:22:21,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1534 transitions. [2023-11-06 22:22:21,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:21,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1534 transitions. [2023-11-06 22:22:21,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 255.66666666666666) internal successors, (1534), 6 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:21,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:21,065 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:21,066 INFO L175 Difference]: Start difference. First operand has 165 places, 400 transitions, 3130 flow. Second operand 6 states and 1534 transitions. [2023-11-06 22:22:21,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 528 transitions, 4954 flow [2023-11-06 22:22:21,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 528 transitions, 4634 flow, removed 160 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:21,156 INFO L231 Difference]: Finished difference. Result has 174 places, 480 transitions, 3928 flow [2023-11-06 22:22:21,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3928, PETRI_PLACES=174, PETRI_TRANSITIONS=480} [2023-11-06 22:22:21,158 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 58 predicate places. [2023-11-06 22:22:21,158 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 480 transitions, 3928 flow [2023-11-06 22:22:21,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:21,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:21,159 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] [2023-11-06 22:22:21,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:22:21,160 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:21,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:21,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1111985703, now seen corresponding path program 1 times [2023-11-06 22:22:21,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:21,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938595539] [2023-11-06 22:22:21,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:21,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:21,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:21,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938595539] [2023-11-06 22:22:21,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938595539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:21,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:21,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:22:21,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468723838] [2023-11-06 22:22:21,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:21,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:22:21,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:22:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:22:22,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 477 [2023-11-06 22:22:22,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 480 transitions, 3928 flow. Second operand has 6 states, 6 states have (on average 194.83333333333334) internal successors, (1169), 6 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:22,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:22,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 477 [2023-11-06 22:22:22,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:27,551 INFO L124 PetriNetUnfolderBase]: 10628/23444 cut-off events. [2023-11-06 22:22:27,551 INFO L125 PetriNetUnfolderBase]: For 37199/37647 co-relation queries the response was YES. [2023-11-06 22:22:27,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81720 conditions, 23444 events. 10628/23444 cut-off events. For 37199/37647 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 187778 event pairs, 5155 based on Foata normal form. 80/22586 useless extension candidates. Maximal degree in co-relation 81686. Up to 19741 conditions per place. [2023-11-06 22:22:27,812 INFO L140 encePairwiseOnDemand]: 439/477 looper letters, 427 selfloop transitions, 201 changer transitions 0/666 dead transitions. [2023-11-06 22:22:27,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 666 transitions, 6044 flow [2023-11-06 22:22:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1406 transitions. [2023-11-06 22:22:27,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4912648497554158 [2023-11-06 22:22:27,820 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1406 transitions. [2023-11-06 22:22:27,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1406 transitions. [2023-11-06 22:22:27,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:27,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1406 transitions. [2023-11-06 22:22:27,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 234.33333333333334) internal successors, (1406), 6 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:27,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:27,853 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:27,853 INFO L175 Difference]: Start difference. First operand has 174 places, 480 transitions, 3928 flow. Second operand 6 states and 1406 transitions. [2023-11-06 22:22:27,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 666 transitions, 6044 flow [2023-11-06 22:22:28,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 666 transitions, 5916 flow, removed 64 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:28,320 INFO L231 Difference]: Finished difference. Result has 183 places, 622 transitions, 5216 flow [2023-11-06 22:22:28,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=3800, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5216, PETRI_PLACES=183, PETRI_TRANSITIONS=622} [2023-11-06 22:22:28,322 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 67 predicate places. [2023-11-06 22:22:28,322 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 622 transitions, 5216 flow [2023-11-06 22:22:28,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.83333333333334) internal successors, (1169), 6 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:28,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:28,323 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] [2023-11-06 22:22:28,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:22:28,323 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:28,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:28,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1151681400, now seen corresponding path program 1 times [2023-11-06 22:22:28,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:28,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284839046] [2023-11-06 22:22:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:28,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:30,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:30,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284839046] [2023-11-06 22:22:30,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284839046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:30,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:30,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:22:30,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082940732] [2023-11-06 22:22:30,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:30,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:22:30,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:30,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:22:30,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:22:37,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 477 [2023-11-06 22:22:37,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 622 transitions, 5216 flow. Second operand has 14 states, 14 states have (on average 205.07142857142858) internal successors, (2871), 14 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:37,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:37,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 477 [2023-11-06 22:22:37,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:44,290 INFO L124 PetriNetUnfolderBase]: 6833/21229 cut-off events. [2023-11-06 22:22:44,290 INFO L125 PetriNetUnfolderBase]: For 44180/44777 co-relation queries the response was YES. [2023-11-06 22:22:44,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75425 conditions, 21229 events. 6833/21229 cut-off events. For 44180/44777 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 212669 event pairs, 883 based on Foata normal form. 214/20381 useless extension candidates. Maximal degree in co-relation 75386. Up to 6981 conditions per place. [2023-11-06 22:22:44,499 INFO L140 encePairwiseOnDemand]: 443/477 looper letters, 763 selfloop transitions, 200 changer transitions 0/1173 dead transitions. [2023-11-06 22:22:44,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1173 transitions, 11435 flow [2023-11-06 22:22:44,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:22:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 22:22:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4318 transitions. [2023-11-06 22:22:44,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45262054507337524 [2023-11-06 22:22:44,517 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4318 transitions. [2023-11-06 22:22:44,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4318 transitions. [2023-11-06 22:22:44,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:44,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4318 transitions. [2023-11-06 22:22:44,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 215.9) internal successors, (4318), 20 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:44,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 477.0) internal successors, (10017), 21 states have internal predecessors, (10017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:44,551 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 477.0) internal successors, (10017), 21 states have internal predecessors, (10017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:44,551 INFO L175 Difference]: Start difference. First operand has 183 places, 622 transitions, 5216 flow. Second operand 20 states and 4318 transitions. [2023-11-06 22:22:44,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 1173 transitions, 11435 flow [2023-11-06 22:22:45,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1173 transitions, 11093 flow, removed 171 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:45,043 INFO L231 Difference]: Finished difference. Result has 220 places, 804 transitions, 7429 flow [2023-11-06 22:22:45,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=4944, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7429, PETRI_PLACES=220, PETRI_TRANSITIONS=804} [2023-11-06 22:22:45,046 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 104 predicate places. [2023-11-06 22:22:45,046 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 804 transitions, 7429 flow [2023-11-06 22:22:45,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 205.07142857142858) internal successors, (2871), 14 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:45,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:45,047 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] [2023-11-06 22:22:45,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:22:45,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:22:45,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1666323750, now seen corresponding path program 2 times [2023-11-06 22:22:45,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:45,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634939552] [2023-11-06 22:22:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:50,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:50,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634939552] [2023-11-06 22:22:50,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634939552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:50,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:50,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-06 22:22:50,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637993608] [2023-11-06 22:22:50,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:50,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:22:50,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:50,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:22:50,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:23:02,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 477 [2023-11-06 22:23:02,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 804 transitions, 7429 flow. Second operand has 23 states, 23 states have (on average 164.17391304347825) internal successors, (3776), 23 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:02,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:02,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 477 [2023-11-06 22:23:02,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:29,805 INFO L124 PetriNetUnfolderBase]: 25882/55303 cut-off events. [2023-11-06 22:23:29,805 INFO L125 PetriNetUnfolderBase]: For 140850/142361 co-relation queries the response was YES. [2023-11-06 22:23:30,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227357 conditions, 55303 events. 25882/55303 cut-off events. For 140850/142361 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 497151 event pairs, 5535 based on Foata normal form. 120/53682 useless extension candidates. Maximal degree in co-relation 227300. Up to 19200 conditions per place. [2023-11-06 22:23:30,691 INFO L140 encePairwiseOnDemand]: 434/477 looper letters, 1957 selfloop transitions, 614 changer transitions 0/2603 dead transitions. [2023-11-06 22:23:30,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 2603 transitions, 25993 flow [2023-11-06 22:23:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-06 22:23:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-06 22:23:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7960 transitions. [2023-11-06 22:23:30,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880844424942714 [2023-11-06 22:23:30,718 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 7960 transitions. [2023-11-06 22:23:30,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 7960 transitions. [2023-11-06 22:23:30,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:30,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 7960 transitions. [2023-11-06 22:23:30,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 185.11627906976744) internal successors, (7960), 43 states have internal predecessors, (7960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:30,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 477.0) internal successors, (20988), 44 states have internal predecessors, (20988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:30,779 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 477.0) internal successors, (20988), 44 states have internal predecessors, (20988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:30,779 INFO L175 Difference]: Start difference. First operand has 220 places, 804 transitions, 7429 flow. Second operand 43 states and 7960 transitions. [2023-11-06 22:23:30,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 2603 transitions, 25993 flow [2023-11-06 22:23:32,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 2603 transitions, 25991 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:32,118 INFO L231 Difference]: Finished difference. Result has 294 places, 1245 transitions, 14655 flow [2023-11-06 22:23:32,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=7427, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=14655, PETRI_PLACES=294, PETRI_TRANSITIONS=1245} [2023-11-06 22:23:32,120 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 178 predicate places. [2023-11-06 22:23:32,120 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 1245 transitions, 14655 flow [2023-11-06 22:23:32,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 164.17391304347825) internal successors, (3776), 23 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:32,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:32,122 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] [2023-11-06 22:23:32,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:23:32,122 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:23:32,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash 220998110, now seen corresponding path program 3 times [2023-11-06 22:23:32,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:32,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944669306] [2023-11-06 22:23:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:32,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:33,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944669306] [2023-11-06 22:23:33,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944669306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:33,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:33,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:23:33,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510273566] [2023-11-06 22:23:33,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:33,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:23:33,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:33,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:23:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:23:37,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 477 [2023-11-06 22:23:37,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 1245 transitions, 14655 flow. Second operand has 13 states, 13 states have (on average 214.07692307692307) internal successors, (2783), 13 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:37,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 477 [2023-11-06 22:23:37,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:49,664 INFO L124 PetriNetUnfolderBase]: 10057/30762 cut-off events. [2023-11-06 22:23:49,664 INFO L125 PetriNetUnfolderBase]: For 146626/148078 co-relation queries the response was YES. [2023-11-06 22:23:50,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141477 conditions, 30762 events. 10057/30762 cut-off events. For 146626/148078 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 317266 event pairs, 1166 based on Foata normal form. 320/29874 useless extension candidates. Maximal degree in co-relation 141386. Up to 14018 conditions per place. [2023-11-06 22:23:50,188 INFO L140 encePairwiseOnDemand]: 448/477 looper letters, 749 selfloop transitions, 577 changer transitions 0/1579 dead transitions. [2023-11-06 22:23:50,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1579 transitions, 21461 flow [2023-11-06 22:23:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:23:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:23:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4021 transitions. [2023-11-06 22:23:50,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683205217796413 [2023-11-06 22:23:50,195 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4021 transitions. [2023-11-06 22:23:50,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4021 transitions. [2023-11-06 22:23:50,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:50,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4021 transitions. [2023-11-06 22:23:50,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 223.38888888888889) internal successors, (4021), 18 states have internal predecessors, (4021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:50,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 477.0) internal successors, (9063), 19 states have internal predecessors, (9063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:50,215 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 477.0) internal successors, (9063), 19 states have internal predecessors, (9063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:50,215 INFO L175 Difference]: Start difference. First operand has 294 places, 1245 transitions, 14655 flow. Second operand 18 states and 4021 transitions. [2023-11-06 22:23:50,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1579 transitions, 21461 flow [2023-11-06 22:23:51,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 1579 transitions, 21193 flow, removed 133 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:51,940 INFO L231 Difference]: Finished difference. Result has 323 places, 1444 transitions, 19687 flow [2023-11-06 22:23:51,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=14461, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=789, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=19687, PETRI_PLACES=323, PETRI_TRANSITIONS=1444} [2023-11-06 22:23:51,942 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 207 predicate places. [2023-11-06 22:23:51,942 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 1444 transitions, 19687 flow [2023-11-06 22:23:51,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 214.07692307692307) internal successors, (2783), 13 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:51,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:51,943 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] [2023-11-06 22:23:51,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:23:51,943 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:23:51,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:51,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1460932108, now seen corresponding path program 4 times [2023-11-06 22:23:51,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:51,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436780160] [2023-11-06 22:23:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:51,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:54,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:54,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:54,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436780160] [2023-11-06 22:23:54,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436780160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:54,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:54,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:23:54,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363484002] [2023-11-06 22:23:54,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:54,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:23:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:23:54,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:24:01,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 477 [2023-11-06 22:24:01,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 1444 transitions, 19687 flow. Second operand has 16 states, 16 states have (on average 198.3125) internal successors, (3173), 16 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:01,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:01,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 477 [2023-11-06 22:24:01,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand