./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:13,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:13,610 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:01:13,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:13,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:13,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:13,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:13,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:13,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:13,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:13,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:13,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:13,667 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:13,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:13,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:01:13,668 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:01:13,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:01:13,669 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:01:13,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:13,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:01:13,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:13,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:01:13,671 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:01:13,673 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:13,673 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:01:13,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:01:13,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:01:13,674 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:13,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:13,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:13,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:13,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:13,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:13,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:13,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:01:13,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:01:13,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:01:13,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:13,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:13,679 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:13,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:13,679 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_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2024-10-31 22:01:13,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:14,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:14,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:14,026 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:14,027 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:14,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i Unable to find full path for "g++" [2024-10-31 22:01:16,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:16,367 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:16,368 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2024-10-31 22:01:16,383 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/data/0ec5e6222/7b1d6c7f6b354cd0a03350c70a957a54/FLAG0a4231e3e [2024-10-31 22:01:16,687 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/data/0ec5e6222/7b1d6c7f6b354cd0a03350c70a957a54 [2024-10-31 22:01:16,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:16,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:16,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:16,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:16,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:16,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:16" (1/1) ... [2024-10-31 22:01:16,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f875b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:16, skipping insertion in model container [2024-10-31 22:01:16,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:16" (1/1) ... [2024-10-31 22:01:16,774 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:17,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:17,348 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:17,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:17,503 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:17,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17 WrapperNode [2024-10-31 22:01:17,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:17,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:17,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:17,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:17,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,549 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,601 INFO L138 Inliner]: procedures = 224, calls = 44, calls flagged for inlining = 16, calls inlined = 10, statements flattened = 197 [2024-10-31 22:01:17,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:17,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:17,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:17,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:17,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,653 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:17,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:17,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:17,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:17,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (1/1) ... [2024-10-31 22:01:17,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:17,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:17,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:17,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da0f9c9-c5a4-4a2d-9918-6dd1d0b900aa/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:01:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:01:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:01:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:01:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:01:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2024-10-31 22:01:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2024-10-31 22:01:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:17,813 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:01:18,005 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:18,007 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:01:18,579 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:01:18,580 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:01:18,597 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:01:18,598 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:01:18,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:18 BoogieIcfgContainer [2024-10-31 22:01:18,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:01:18,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:01:18,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:01:18,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:01:18,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:16" (1/3) ... [2024-10-31 22:01:18,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b755c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:18, skipping insertion in model container [2024-10-31 22:01:18,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:17" (2/3) ... [2024-10-31 22:01:18,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b755c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:18, skipping insertion in model container [2024-10-31 22:01:18,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:18" (3/3) ... [2024-10-31 22:01:18,610 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2024-10-31 22:01:18,632 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:01:18,632 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-31 22:01:18,633 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:01:18,772 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:01:18,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 237 transitions, 481 flow [2024-10-31 22:01:18,950 INFO L124 PetriNetUnfolderBase]: 12/236 cut-off events. [2024-10-31 22:01:18,951 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:01:18,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 236 events. 12/236 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 531 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 186. Up to 2 conditions per place. [2024-10-31 22:01:18,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 237 transitions, 481 flow [2024-10-31 22:01:18,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 230 transitions, 463 flow [2024-10-31 22:01:18,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:18,993 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@75eb1dc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:18,993 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-31 22:01:19,011 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:01:19,012 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-10-31 22:01:19,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:19,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:19,014 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:19,015 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:19,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash 824070514, now seen corresponding path program 1 times [2024-10-31 22:01:19,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:19,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696713349] [2024-10-31 22:01:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:19,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:20,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:20,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696713349] [2024-10-31 22:01:20,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696713349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:20,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:20,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:01:20,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128202004] [2024-10-31 22:01:20,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:20,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:20,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:20,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:20,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 237 [2024-10-31 22:01:20,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 230 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:20,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:20,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 237 [2024-10-31 22:01:20,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:21,584 INFO L124 PetriNetUnfolderBase]: 675/3079 cut-off events. [2024-10-31 22:01:21,584 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:01:21,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4374 conditions, 3079 events. 675/3079 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 24329 event pairs, 576 based on Foata normal form. 296/3069 useless extension candidates. Maximal degree in co-relation 4315. Up to 1286 conditions per place. [2024-10-31 22:01:21,604 INFO L140 encePairwiseOnDemand]: 222/237 looper letters, 54 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2024-10-31 22:01:21,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 217 transitions, 555 flow [2024-10-31 22:01:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1071 transitions. [2024-10-31 22:01:21,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7531645569620253 [2024-10-31 22:01:21,624 INFO L175 Difference]: Start difference. First operand has 222 places, 230 transitions, 463 flow. Second operand 6 states and 1071 transitions. [2024-10-31 22:01:21,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 217 transitions, 555 flow [2024-10-31 22:01:21,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 217 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:01:21,634 INFO L231 Difference]: Finished difference. Result has 222 places, 217 transitions, 446 flow [2024-10-31 22:01:21,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=222, PETRI_TRANSITIONS=217} [2024-10-31 22:01:21,641 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, 0 predicate places. [2024-10-31 22:01:21,642 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 217 transitions, 446 flow [2024-10-31 22:01:21,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:21,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:21,643 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:21,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:01:21,644 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:21,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:21,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1711871567, now seen corresponding path program 1 times [2024-10-31 22:01:21,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:21,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433326012] [2024-10-31 22:01:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:21,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:22,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:22,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433326012] [2024-10-31 22:01:22,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433326012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:22,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:22,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:01:22,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133838567] [2024-10-31 22:01:22,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:22,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:22,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:22,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:22,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:22,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 237 [2024-10-31 22:01:22,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 217 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:22,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:22,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 237 [2024-10-31 22:01:22,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:23,029 INFO L124 PetriNetUnfolderBase]: 675/3078 cut-off events. [2024-10-31 22:01:23,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:23,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 3078 events. 675/3078 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 24264 event pairs, 576 based on Foata normal form. 0/2773 useless extension candidates. Maximal degree in co-relation 4327. Up to 1286 conditions per place. [2024-10-31 22:01:23,050 INFO L140 encePairwiseOnDemand]: 231/237 looper letters, 54 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2024-10-31 22:01:23,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 216 transitions, 562 flow [2024-10-31 22:01:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2024-10-31 22:01:23,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7468354430379747 [2024-10-31 22:01:23,054 INFO L175 Difference]: Start difference. First operand has 222 places, 217 transitions, 446 flow. Second operand 6 states and 1062 transitions. [2024-10-31 22:01:23,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 216 transitions, 562 flow [2024-10-31 22:01:23,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 216 transitions, 552 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:01:23,062 INFO L231 Difference]: Finished difference. Result has 221 places, 216 transitions, 444 flow [2024-10-31 22:01:23,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=221, PETRI_TRANSITIONS=216} [2024-10-31 22:01:23,067 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, -1 predicate places. [2024-10-31 22:01:23,067 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 216 transitions, 444 flow [2024-10-31 22:01:23,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:23,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:23,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:23,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:01:23,070 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:23,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash -464323946, now seen corresponding path program 1 times [2024-10-31 22:01:23,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:23,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945621638] [2024-10-31 22:01:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:23,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:23,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:23,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945621638] [2024-10-31 22:01:23,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945621638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:23,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:23,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:01:23,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164956020] [2024-10-31 22:01:23,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:23,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:23,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:24,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 237 [2024-10-31 22:01:24,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 216 transitions, 444 flow. Second operand has 6 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:24,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:24,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 237 [2024-10-31 22:01:24,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:25,040 INFO L124 PetriNetUnfolderBase]: 311/2118 cut-off events. [2024-10-31 22:01:25,040 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:01:25,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 2118 events. 311/2118 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 14654 event pairs, 64 based on Foata normal form. 0/1898 useless extension candidates. Maximal degree in co-relation 2665. Up to 452 conditions per place. [2024-10-31 22:01:25,054 INFO L140 encePairwiseOnDemand]: 216/237 looper letters, 39 selfloop transitions, 43 changer transitions 0/261 dead transitions. [2024-10-31 22:01:25,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 261 transitions, 698 flow [2024-10-31 22:01:25,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1224 transitions. [2024-10-31 22:01:25,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8607594936708861 [2024-10-31 22:01:25,058 INFO L175 Difference]: Start difference. First operand has 221 places, 216 transitions, 444 flow. Second operand 6 states and 1224 transitions. [2024-10-31 22:01:25,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 261 transitions, 698 flow [2024-10-31 22:01:25,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 261 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:01:25,066 INFO L231 Difference]: Finished difference. Result has 226 places, 258 transitions, 730 flow [2024-10-31 22:01:25,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=730, PETRI_PLACES=226, PETRI_TRANSITIONS=258} [2024-10-31 22:01:25,067 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, 4 predicate places. [2024-10-31 22:01:25,067 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 258 transitions, 730 flow [2024-10-31 22:01:25,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:25,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:25,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:25,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:01:25,069 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:25,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:25,070 INFO L85 PathProgramCache]: Analyzing trace with hash -348864802, now seen corresponding path program 1 times [2024-10-31 22:01:25,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600707198] [2024-10-31 22:01:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:25,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:25,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:25,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600707198] [2024-10-31 22:01:25,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600707198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:25,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:25,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:25,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355142834] [2024-10-31 22:01:25,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:25,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:25,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:25,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:25,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2024-10-31 22:01:25,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 258 transitions, 730 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:25,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:25,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2024-10-31 22:01:25,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:25,578 INFO L124 PetriNetUnfolderBase]: 297/2369 cut-off events. [2024-10-31 22:01:25,578 INFO L125 PetriNetUnfolderBase]: For 238/272 co-relation queries the response was YES. [2024-10-31 22:01:25,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3464 conditions, 2369 events. 297/2369 cut-off events. For 238/272 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 16877 event pairs, 16 based on Foata normal form. 1/2172 useless extension candidates. Maximal degree in co-relation 3412. Up to 342 conditions per place. [2024-10-31 22:01:25,597 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 3 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2024-10-31 22:01:25,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 259 transitions, 742 flow [2024-10-31 22:01:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2024-10-31 22:01:25,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9493670886075949 [2024-10-31 22:01:25,600 INFO L175 Difference]: Start difference. First operand has 226 places, 258 transitions, 730 flow. Second operand 3 states and 675 transitions. [2024-10-31 22:01:25,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 259 transitions, 742 flow [2024-10-31 22:01:25,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 259 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:25,641 INFO L231 Difference]: Finished difference. Result has 229 places, 259 transitions, 742 flow [2024-10-31 22:01:25,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=742, PETRI_PLACES=229, PETRI_TRANSITIONS=259} [2024-10-31 22:01:25,643 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, 7 predicate places. [2024-10-31 22:01:25,643 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 259 transitions, 742 flow [2024-10-31 22:01:25,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:25,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:25,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:25,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:01:25,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:25,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash -8247405, now seen corresponding path program 1 times [2024-10-31 22:01:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:25,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933035726] [2024-10-31 22:01:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:25,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:26,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:26,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933035726] [2024-10-31 22:01:26,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933035726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:26,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:26,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:01:26,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313098891] [2024-10-31 22:01:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:26,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:26,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:26,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 237 [2024-10-31 22:01:26,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 259 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:26,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:26,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 237 [2024-10-31 22:01:26,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:27,896 INFO L124 PetriNetUnfolderBase]: 780/4989 cut-off events. [2024-10-31 22:01:27,896 INFO L125 PetriNetUnfolderBase]: For 1078/1245 co-relation queries the response was YES. [2024-10-31 22:01:27,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8236 conditions, 4989 events. 780/4989 cut-off events. For 1078/1245 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 43674 event pairs, 132 based on Foata normal form. 68/4724 useless extension candidates. Maximal degree in co-relation 8174. Up to 1061 conditions per place. [2024-10-31 22:01:27,947 INFO L140 encePairwiseOnDemand]: 213/237 looper letters, 81 selfloop transitions, 45 changer transitions 0/309 dead transitions. [2024-10-31 22:01:27,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 309 transitions, 1154 flow [2024-10-31 22:01:27,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2024-10-31 22:01:27,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8354430379746836 [2024-10-31 22:01:27,958 INFO L175 Difference]: Start difference. First operand has 229 places, 259 transitions, 742 flow. Second operand 6 states and 1188 transitions. [2024-10-31 22:01:27,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 309 transitions, 1154 flow [2024-10-31 22:01:27,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 309 transitions, 1152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:01:27,970 INFO L231 Difference]: Finished difference. Result has 238 places, 303 transitions, 1132 flow [2024-10-31 22:01:27,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1132, PETRI_PLACES=238, PETRI_TRANSITIONS=303} [2024-10-31 22:01:27,973 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, 16 predicate places. [2024-10-31 22:01:27,974 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 303 transitions, 1132 flow [2024-10-31 22:01:27,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:27,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:27,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:27,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:01:27,977 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:27,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash -856788738, now seen corresponding path program 1 times [2024-10-31 22:01:27,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:27,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553035034] [2024-10-31 22:01:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:27,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:28,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553035034] [2024-10-31 22:01:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553035034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:28,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:28,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:01:28,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016406561] [2024-10-31 22:01:28,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:28,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:28,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:28,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:28,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:29,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 237 [2024-10-31 22:01:29,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 303 transitions, 1132 flow. Second operand has 6 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:29,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:29,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 237 [2024-10-31 22:01:29,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:30,715 INFO L124 PetriNetUnfolderBase]: 1108/6651 cut-off events. [2024-10-31 22:01:30,716 INFO L125 PetriNetUnfolderBase]: For 5148/6037 co-relation queries the response was YES. [2024-10-31 22:01:30,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12895 conditions, 6651 events. 1108/6651 cut-off events. For 5148/6037 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 61362 event pairs, 156 based on Foata normal form. 167/6399 useless extension candidates. Maximal degree in co-relation 12829. Up to 1419 conditions per place. [2024-10-31 22:01:30,782 INFO L140 encePairwiseOnDemand]: 222/237 looper letters, 94 selfloop transitions, 78 changer transitions 0/380 dead transitions. [2024-10-31 22:01:30,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 380 transitions, 1934 flow [2024-10-31 22:01:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1240 transitions. [2024-10-31 22:01:30,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8720112517580872 [2024-10-31 22:01:30,786 INFO L175 Difference]: Start difference. First operand has 238 places, 303 transitions, 1132 flow. Second operand 6 states and 1240 transitions. [2024-10-31 22:01:30,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 380 transitions, 1934 flow [2024-10-31 22:01:30,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 380 transitions, 1934 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:30,812 INFO L231 Difference]: Finished difference. Result has 248 places, 380 transitions, 1950 flow [2024-10-31 22:01:30,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1950, PETRI_PLACES=248, PETRI_TRANSITIONS=380} [2024-10-31 22:01:30,815 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, 26 predicate places. [2024-10-31 22:01:30,816 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 380 transitions, 1950 flow [2024-10-31 22:01:30,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:30,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:30,817 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:30,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:01:30,818 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:30,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:30,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1158210824, now seen corresponding path program 1 times [2024-10-31 22:01:30,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:30,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096453789] [2024-10-31 22:01:30,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:30,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:31,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:31,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096453789] [2024-10-31 22:01:31,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096453789] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:31,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:31,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:01:31,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730081656] [2024-10-31 22:01:31,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:31,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:31,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:31,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:31,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:32,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 237 [2024-10-31 22:01:32,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 380 transitions, 1950 flow. Second operand has 6 states, 6 states have (on average 203.66666666666666) internal successors, (1222), 6 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:32,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:32,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 237 [2024-10-31 22:01:32,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:33,468 INFO L124 PetriNetUnfolderBase]: 1128/7187 cut-off events. [2024-10-31 22:01:33,469 INFO L125 PetriNetUnfolderBase]: For 7186/7956 co-relation queries the response was YES. [2024-10-31 22:01:33,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14883 conditions, 7187 events. 1128/7187 cut-off events. For 7186/7956 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 69043 event pairs, 107 based on Foata normal form. 192/6998 useless extension candidates. Maximal degree in co-relation 14812. Up to 1090 conditions per place. [2024-10-31 22:01:33,524 INFO L140 encePairwiseOnDemand]: 226/237 looper letters, 103 selfloop transitions, 66 changer transitions 0/445 dead transitions. [2024-10-31 22:01:33,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 445 transitions, 2720 flow [2024-10-31 22:01:33,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:33,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1258 transitions. [2024-10-31 22:01:33,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8846694796061885 [2024-10-31 22:01:33,528 INFO L175 Difference]: Start difference. First operand has 248 places, 380 transitions, 1950 flow. Second operand 6 states and 1258 transitions. [2024-10-31 22:01:33,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 445 transitions, 2720 flow [2024-10-31 22:01:33,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 445 transitions, 2720 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:33,554 INFO L231 Difference]: Finished difference. Result has 258 places, 442 transitions, 2712 flow [2024-10-31 22:01:33,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2712, PETRI_PLACES=258, PETRI_TRANSITIONS=442} [2024-10-31 22:01:33,555 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, 36 predicate places. [2024-10-31 22:01:33,556 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 442 transitions, 2712 flow [2024-10-31 22:01:33,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.66666666666666) internal successors, (1222), 6 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:33,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:33,557 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:33,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:01:33,558 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:33,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1378030033, now seen corresponding path program 1 times [2024-10-31 22:01:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:33,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602608386] [2024-10-31 22:01:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:33,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:34,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602608386] [2024-10-31 22:01:34,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602608386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:34,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:34,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:01:34,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532794925] [2024-10-31 22:01:34,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:34,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:34,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:34,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:34,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:34,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 237 [2024-10-31 22:01:34,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 442 transitions, 2712 flow. Second operand has 6 states, 6 states have (on average 166.16666666666666) internal successors, (997), 6 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:34,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:34,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 237 [2024-10-31 22:01:34,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:37,873 INFO L124 PetriNetUnfolderBase]: 5261/16665 cut-off events. [2024-10-31 22:01:37,874 INFO L125 PetriNetUnfolderBase]: For 19400/19700 co-relation queries the response was YES. [2024-10-31 22:01:37,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44613 conditions, 16665 events. 5261/16665 cut-off events. For 19400/19700 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 158396 event pairs, 2287 based on Foata normal form. 50/15799 useless extension candidates. Maximal degree in co-relation 44537. Up to 9666 conditions per place. [2024-10-31 22:01:38,036 INFO L140 encePairwiseOnDemand]: 206/237 looper letters, 260 selfloop transitions, 156 changer transitions 0/573 dead transitions. [2024-10-31 22:01:38,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 573 transitions, 4280 flow [2024-10-31 22:01:38,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:38,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2024-10-31 22:01:38,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7974683544303798 [2024-10-31 22:01:38,041 INFO L175 Difference]: Start difference. First operand has 258 places, 442 transitions, 2712 flow. Second operand 6 states and 1134 transitions. [2024-10-31 22:01:38,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 573 transitions, 4280 flow [2024-10-31 22:01:38,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 573 transitions, 4280 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:38,156 INFO L231 Difference]: Finished difference. Result has 268 places, 573 transitions, 4180 flow [2024-10-31 22:01:38,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4180, PETRI_PLACES=268, PETRI_TRANSITIONS=573} [2024-10-31 22:01:38,157 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, 46 predicate places. [2024-10-31 22:01:38,158 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 573 transitions, 4180 flow [2024-10-31 22:01:38,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.16666666666666) internal successors, (997), 6 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:38,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:38,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:38,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:01:38,160 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:38,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash 481416421, now seen corresponding path program 1 times [2024-10-31 22:01:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:38,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160364973] [2024-10-31 22:01:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:38,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:38,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:38,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160364973] [2024-10-31 22:01:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160364973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:38,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:38,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:01:38,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850923192] [2024-10-31 22:01:38,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:38,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:38,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:38,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:38,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:39,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 237 [2024-10-31 22:01:39,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 573 transitions, 4180 flow. Second operand has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:39,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:39,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 237 [2024-10-31 22:01:39,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:43,197 INFO L124 PetriNetUnfolderBase]: 5567/17507 cut-off events. [2024-10-31 22:01:43,197 INFO L125 PetriNetUnfolderBase]: For 29328/29582 co-relation queries the response was YES. [2024-10-31 22:01:43,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52930 conditions, 17507 events. 5567/17507 cut-off events. For 29328/29582 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 167558 event pairs, 2232 based on Foata normal form. 12/16658 useless extension candidates. Maximal degree in co-relation 52849. Up to 9984 conditions per place. [2024-10-31 22:01:43,328 INFO L140 encePairwiseOnDemand]: 206/237 looper letters, 372 selfloop transitions, 167 changer transitions 0/700 dead transitions. [2024-10-31 22:01:43,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 700 transitions, 5924 flow [2024-10-31 22:01:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2024-10-31 22:01:43,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7974683544303798 [2024-10-31 22:01:43,333 INFO L175 Difference]: Start difference. First operand has 268 places, 573 transitions, 4180 flow. Second operand 6 states and 1134 transitions. [2024-10-31 22:01:43,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 700 transitions, 5924 flow [2024-10-31 22:01:43,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 700 transitions, 5692 flow, removed 116 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:43,487 INFO L231 Difference]: Finished difference. Result has 278 places, 700 transitions, 5388 flow [2024-10-31 22:01:43,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=3960, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5388, PETRI_PLACES=278, PETRI_TRANSITIONS=700} [2024-10-31 22:01:43,489 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, 56 predicate places. [2024-10-31 22:01:43,489 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 700 transitions, 5388 flow [2024-10-31 22:01:43,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:43,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:43,491 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:43,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:01:43,491 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:43,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash -61528390, now seen corresponding path program 1 times [2024-10-31 22:01:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:43,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71743705] [2024-10-31 22:01:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:43,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat