./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 9bd2c7ff 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_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu --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 0.2.3-dev-9bd2c7f [2023-11-19 07:40:10,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:10,922 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:40:10,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:10,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:10,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:10,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:10,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:10,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:10,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:10,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:10,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:10,982 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:10,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:10,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:10,984 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:10,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:10,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:10,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:10,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:10,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:10,987 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:10,988 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:40:10,988 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:40:10,988 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:10,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:10,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:10,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:10,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:10,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:10,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:10,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:10,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:10,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:10,994 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:10,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:10,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:10,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:10,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:10,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:10,995 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:10,995 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_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2023-11-19 07:40:11,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:11,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:11,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:11,320 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:11,321 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:11,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2023-11-19 07:40:14,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:14,841 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:14,842 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2023-11-19 07:40:14,868 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/data/a56df0cf1/cc3d6bd62b514bf1bb230a6e4f6e4a93/FLAGda26bedfc [2023-11-19 07:40:14,894 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/data/a56df0cf1/cc3d6bd62b514bf1bb230a6e4f6e4a93 [2023-11-19 07:40:14,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:14,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:14,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:14,900 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:14,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:14,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:14" (1/1) ... [2023-11-19 07:40:14,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bafeec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:14, skipping insertion in model container [2023-11-19 07:40:14,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:14" (1/1) ... [2023-11-19 07:40:14,962 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:15,127 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:40:15,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:15,509 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:15,528 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:40:15,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:15,715 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:15,724 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:15,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15 WrapperNode [2023-11-19 07:40:15,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:15,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:15,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:15,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:15,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,855 INFO L138 Inliner]: procedures = 225, calls = 49, calls flagged for inlining = 16, calls inlined = 10, statements flattened = 207 [2023-11-19 07:40:15,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:15,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:15,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:15,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:15,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:15,953 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:15,953 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:15,953 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:15,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:15,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:15,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:16,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31ceb9e-d0da-4fec-9d34-3a1d826cc29d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:40:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:40:16,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:40:16,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:40:16,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:16,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:16,041 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2023-11-19 07:40:16,041 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2023-11-19 07:40:16,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:16,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:16,044 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:40:16,250 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:16,254 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:16,717 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:16,730 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:16,730 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:40:16,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:16 BoogieIcfgContainer [2023-11-19 07:40:16,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:16,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:16,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:16,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:16,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:14" (1/3) ... [2023-11-19 07:40:16,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a033b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:16, skipping insertion in model container [2023-11-19 07:40:16,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (2/3) ... [2023-11-19 07:40:16,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a033b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:16, skipping insertion in model container [2023-11-19 07:40:16,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:16" (3/3) ... [2023-11-19 07:40:16,745 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2023-11-19 07:40:16,755 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:40:16,766 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:16,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-19 07:40:16,767 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:40:16,895 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:40:16,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 250 transitions, 507 flow [2023-11-19 07:40:17,190 INFO L124 PetriNetUnfolderBase]: 12/249 cut-off events. [2023-11-19 07:40:17,190 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:40:17,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 249 events. 12/249 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 601 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-11-19 07:40:17,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 250 transitions, 507 flow [2023-11-19 07:40:17,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 240 transitions, 483 flow [2023-11-19 07:40:17,225 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:17,235 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 240 transitions, 483 flow [2023-11-19 07:40:17,237 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 240 transitions, 483 flow [2023-11-19 07:40:17,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 240 transitions, 483 flow [2023-11-19 07:40:17,319 INFO L124 PetriNetUnfolderBase]: 12/240 cut-off events. [2023-11-19 07:40:17,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:17,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 240 events. 12/240 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 554 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-11-19 07:40:17,340 INFO L119 LiptonReduction]: Number of co-enabled transitions 19008 [2023-11-19 07:40:28,445 INFO L134 LiptonReduction]: Checked pairs total: 110638 [2023-11-19 07:40:28,446 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-11-19 07:40:28,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:28,489 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@776db384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:28,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 07:40:28,491 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:28,491 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:40:28,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:28,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:28,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:40:28,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:40:28,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash 872, now seen corresponding path program 1 times [2023-11-19 07:40:28,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:28,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661209380] [2023-11-19 07:40:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:28,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:28,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:28,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661209380] [2023-11-19 07:40:28,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661209380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:28,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:28,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:40:28,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937952933] [2023-11-19 07:40:28,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:28,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:40:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:28,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:40:28,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:28,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 429 [2023-11-19 07:40:28,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 205 flow. Second operand has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 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) [2023-11-19 07:40:28,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:28,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 429 [2023-11-19 07:40:28,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:28,886 INFO L124 PetriNetUnfolderBase]: 89/559 cut-off events. [2023-11-19 07:40:28,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:28,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 559 events. 89/559 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3087 event pairs, 63 based on Foata normal form. 8/498 useless extension candidates. Maximal degree in co-relation 725. Up to 171 conditions per place. [2023-11-19 07:40:28,892 INFO L140 encePairwiseOnDemand]: 425/429 looper letters, 21 selfloop transitions, 0 changer transitions 0/97 dead transitions. [2023-11-19 07:40:28,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 239 flow [2023-11-19 07:40:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:40:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:40:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 503 transitions. [2023-11-19 07:40:28,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862470862470862 [2023-11-19 07:40:28,912 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 503 transitions. [2023-11-19 07:40:28,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 503 transitions. [2023-11-19 07:40:28,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:28,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 503 transitions. [2023-11-19 07:40:28,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 251.5) internal successors, (503), 2 states have internal predecessors, (503), 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) [2023-11-19 07:40:28,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 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) [2023-11-19 07:40:28,931 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 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) [2023-11-19 07:40:28,933 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 205 flow. Second operand 2 states and 503 transitions. [2023-11-19 07:40:28,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 239 flow [2023-11-19 07:40:28,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 97 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:28,941 INFO L231 Difference]: Finished difference. Result has 98 places, 97 transitions, 196 flow [2023-11-19 07:40:28,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=196, PETRI_PLACES=98, PETRI_TRANSITIONS=97} [2023-11-19 07:40:28,947 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2023-11-19 07:40:28,948 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 97 transitions, 196 flow [2023-11-19 07:40:28,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 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) [2023-11-19 07:40:28,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:28,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:28,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:28,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:40:28,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:28,950 INFO L85 PathProgramCache]: Analyzing trace with hash -720790838, now seen corresponding path program 1 times [2023-11-19 07:40:28,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:28,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871172812] [2023-11-19 07:40:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:28,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:29,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:29,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871172812] [2023-11-19 07:40:29,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871172812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:29,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:29,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:29,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784381633] [2023-11-19 07:40:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:29,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:29,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:29,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:29,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 429 [2023-11-19 07:40:29,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2023-11-19 07:40:29,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:29,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 429 [2023-11-19 07:40:29,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:29,402 INFO L124 PetriNetUnfolderBase]: 161/984 cut-off events. [2023-11-19 07:40:29,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:29,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 984 events. 161/984 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5749 event pairs, 63 based on Foata normal form. 0/868 useless extension candidates. Maximal degree in co-relation 1292. Up to 171 conditions per place. [2023-11-19 07:40:29,410 INFO L140 encePairwiseOnDemand]: 426/429 looper letters, 36 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-11-19 07:40:29,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 114 transitions, 306 flow [2023-11-19 07:40:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2023-11-19 07:40:29,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5734265734265734 [2023-11-19 07:40:29,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2023-11-19 07:40:29,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2023-11-19 07:40:29,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:29,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2023-11-19 07:40:29,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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) [2023-11-19 07:40:29,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-11-19 07:40:29,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-11-19 07:40:29,426 INFO L175 Difference]: Start difference. First operand has 98 places, 97 transitions, 196 flow. Second operand 3 states and 738 transitions. [2023-11-19 07:40:29,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 114 transitions, 306 flow [2023-11-19 07:40:29,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 114 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:29,430 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 208 flow [2023-11-19 07:40:29,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2023-11-19 07:40:29,432 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2023-11-19 07:40:29,432 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 208 flow [2023-11-19 07:40:29,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2023-11-19 07:40:29,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:29,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:29,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:40:29,434 INFO L420 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 19 more)] === [2023-11-19 07:40:29,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1893973375, now seen corresponding path program 1 times [2023-11-19 07:40:29,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:29,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027642039] [2023-11-19 07:40:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:29,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027642039] [2023-11-19 07:40:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027642039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:29,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:29,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:29,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083556065] [2023-11-19 07:40:29,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:29,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:29,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:29,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:30,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 429 [2023-11-19 07:40:30,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 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) [2023-11-19 07:40:30,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:30,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 429 [2023-11-19 07:40:30,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:31,510 INFO L124 PetriNetUnfolderBase]: 1115/3464 cut-off events. [2023-11-19 07:40:31,510 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-19 07:40:31,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5815 conditions, 3464 events. 1115/3464 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 24609 event pairs, 278 based on Foata normal form. 0/3180 useless extension candidates. Maximal degree in co-relation 5810. Up to 1437 conditions per place. [2023-11-19 07:40:31,534 INFO L140 encePairwiseOnDemand]: 408/429 looper letters, 87 selfloop transitions, 43 changer transitions 0/185 dead transitions. [2023-11-19 07:40:31,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 185 transitions, 682 flow [2023-11-19 07:40:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1345 transitions. [2023-11-19 07:40:31,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225330225330226 [2023-11-19 07:40:31,540 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1345 transitions. [2023-11-19 07:40:31,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1345 transitions. [2023-11-19 07:40:31,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:31,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1345 transitions. [2023-11-19 07:40:31,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.16666666666666) internal successors, (1345), 6 states have internal predecessors, (1345), 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) [2023-11-19 07:40:31,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:31,556 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:31,557 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 208 flow. Second operand 6 states and 1345 transitions. [2023-11-19 07:40:31,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 185 transitions, 682 flow [2023-11-19 07:40:31,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 185 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:31,566 INFO L231 Difference]: Finished difference. Result has 110 places, 140 transitions, 502 flow [2023-11-19 07:40:31,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=502, PETRI_PLACES=110, PETRI_TRANSITIONS=140} [2023-11-19 07:40:31,568 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2023-11-19 07:40:31,569 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 140 transitions, 502 flow [2023-11-19 07:40:31,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 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) [2023-11-19 07:40:31,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:31,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:31,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:40:31,575 INFO L420 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 19 more)] === [2023-11-19 07:40:31,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:31,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1481998142, now seen corresponding path program 1 times [2023-11-19 07:40:31,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:31,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349289155] [2023-11-19 07:40:31,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:31,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:31,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:31,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349289155] [2023-11-19 07:40:31,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349289155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:31,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:31,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148590782] [2023-11-19 07:40:31,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:31,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:31,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:31,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 429 [2023-11-19 07:40:31,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 140 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2023-11-19 07:40:31,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:31,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 429 [2023-11-19 07:40:31,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:32,473 INFO L124 PetriNetUnfolderBase]: 920/4300 cut-off events. [2023-11-19 07:40:32,473 INFO L125 PetriNetUnfolderBase]: For 1035/1139 co-relation queries the response was YES. [2023-11-19 07:40:32,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8115 conditions, 4300 events. 920/4300 cut-off events. For 1035/1139 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 35838 event pairs, 194 based on Foata normal form. 16/4050 useless extension candidates. Maximal degree in co-relation 8106. Up to 798 conditions per place. [2023-11-19 07:40:32,513 INFO L140 encePairwiseOnDemand]: 426/429 looper letters, 55 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-11-19 07:40:32,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 166 transitions, 718 flow [2023-11-19 07:40:32,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:32,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-11-19 07:40:32,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5796425796425796 [2023-11-19 07:40:32,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-11-19 07:40:32,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-11-19 07:40:32,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:32,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-11-19 07:40:32,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2023-11-19 07:40:32,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-11-19 07:40:32,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-11-19 07:40:32,528 INFO L175 Difference]: Start difference. First operand has 110 places, 140 transitions, 502 flow. Second operand 3 states and 746 transitions. [2023-11-19 07:40:32,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 166 transitions, 718 flow [2023-11-19 07:40:32,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 166 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:32,545 INFO L231 Difference]: Finished difference. Result has 113 places, 141 transitions, 514 flow [2023-11-19 07:40:32,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=113, PETRI_TRANSITIONS=141} [2023-11-19 07:40:32,547 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 13 predicate places. [2023-11-19 07:40:32,547 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 141 transitions, 514 flow [2023-11-19 07:40:32,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2023-11-19 07:40:32,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:32,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:32,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:40:32,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:40:32,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1145085341, now seen corresponding path program 1 times [2023-11-19 07:40:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:32,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420682679] [2023-11-19 07:40:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:32,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420682679] [2023-11-19 07:40:32,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420682679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:32,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:32,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:32,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088404124] [2023-11-19 07:40:32,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:32,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:32,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:32,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:32,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:33,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 429 [2023-11-19 07:40:33,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 141 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 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) [2023-11-19 07:40:33,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:33,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 429 [2023-11-19 07:40:33,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:35,240 INFO L124 PetriNetUnfolderBase]: 2859/8551 cut-off events. [2023-11-19 07:40:35,241 INFO L125 PetriNetUnfolderBase]: For 2607/2775 co-relation queries the response was YES. [2023-11-19 07:40:35,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18253 conditions, 8551 events. 2859/8551 cut-off events. For 2607/2775 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 73210 event pairs, 644 based on Foata normal form. 0/8174 useless extension candidates. Maximal degree in co-relation 18242. Up to 3411 conditions per place. [2023-11-19 07:40:35,310 INFO L140 encePairwiseOnDemand]: 405/429 looper letters, 123 selfloop transitions, 45 changer transitions 0/226 dead transitions. [2023-11-19 07:40:35,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 226 transitions, 1120 flow [2023-11-19 07:40:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1302 transitions. [2023-11-19 07:40:35,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058275058275058 [2023-11-19 07:40:35,316 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1302 transitions. [2023-11-19 07:40:35,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1302 transitions. [2023-11-19 07:40:35,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:35,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1302 transitions. [2023-11-19 07:40:35,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 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) [2023-11-19 07:40:35,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:35,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:35,331 INFO L175 Difference]: Start difference. First operand has 113 places, 141 transitions, 514 flow. Second operand 6 states and 1302 transitions. [2023-11-19 07:40:35,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 226 transitions, 1120 flow [2023-11-19 07:40:35,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 226 transitions, 1110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:35,346 INFO L231 Difference]: Finished difference. Result has 122 places, 185 transitions, 904 flow [2023-11-19 07:40:35,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=904, PETRI_PLACES=122, PETRI_TRANSITIONS=185} [2023-11-19 07:40:35,347 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 22 predicate places. [2023-11-19 07:40:35,348 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 185 transitions, 904 flow [2023-11-19 07:40:35,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 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) [2023-11-19 07:40:35,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:35,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:35,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:40:35,349 INFO L420 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 19 more)] === [2023-11-19 07:40:35,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:35,350 INFO L85 PathProgramCache]: Analyzing trace with hash 2072879943, now seen corresponding path program 1 times [2023-11-19 07:40:35,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:35,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805569270] [2023-11-19 07:40:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:35,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:35,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:35,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805569270] [2023-11-19 07:40:35,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805569270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:35,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:35,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:35,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848375905] [2023-11-19 07:40:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:35,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:35,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:36,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 429 [2023-11-19 07:40:36,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 185 transitions, 904 flow. Second operand has 6 states, 6 states have (on average 209.5) internal successors, (1257), 6 states have internal predecessors, (1257), 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) [2023-11-19 07:40:36,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:36,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 429 [2023-11-19 07:40:36,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:38,691 INFO L124 PetriNetUnfolderBase]: 2682/8987 cut-off events. [2023-11-19 07:40:38,691 INFO L125 PetriNetUnfolderBase]: For 6848/7124 co-relation queries the response was YES. [2023-11-19 07:40:38,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22139 conditions, 8987 events. 2682/8987 cut-off events. For 6848/7124 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 79876 event pairs, 690 based on Foata normal form. 16/8656 useless extension candidates. Maximal degree in co-relation 22124. Up to 3807 conditions per place. [2023-11-19 07:40:38,769 INFO L140 encePairwiseOnDemand]: 415/429 looper letters, 139 selfloop transitions, 77 changer transitions 0/301 dead transitions. [2023-11-19 07:40:38,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 301 transitions, 1904 flow [2023-11-19 07:40:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1356 transitions. [2023-11-19 07:40:38,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268065268065268 [2023-11-19 07:40:38,775 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1356 transitions. [2023-11-19 07:40:38,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1356 transitions. [2023-11-19 07:40:38,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:38,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1356 transitions. [2023-11-19 07:40:38,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 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) [2023-11-19 07:40:38,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:38,788 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:38,789 INFO L175 Difference]: Start difference. First operand has 122 places, 185 transitions, 904 flow. Second operand 6 states and 1356 transitions. [2023-11-19 07:40:38,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 301 transitions, 1904 flow [2023-11-19 07:40:38,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 301 transitions, 1904 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:38,820 INFO L231 Difference]: Finished difference. Result has 131 places, 261 transitions, 1640 flow [2023-11-19 07:40:38,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1640, PETRI_PLACES=131, PETRI_TRANSITIONS=261} [2023-11-19 07:40:38,823 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 31 predicate places. [2023-11-19 07:40:38,824 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 261 transitions, 1640 flow [2023-11-19 07:40:38,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.5) internal successors, (1257), 6 states have internal predecessors, (1257), 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) [2023-11-19 07:40:38,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:38,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:38,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:40:38,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:40:38,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:38,826 INFO L85 PathProgramCache]: Analyzing trace with hash -467293434, now seen corresponding path program 1 times [2023-11-19 07:40:38,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:38,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339122474] [2023-11-19 07:40:38,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:38,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:39,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339122474] [2023-11-19 07:40:39,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339122474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:39,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:39,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:39,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985986021] [2023-11-19 07:40:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:39,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:39,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:39,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 429 [2023-11-19 07:40:39,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 261 transitions, 1640 flow. Second operand has 6 states, 6 states have (on average 215.5) internal successors, (1293), 6 states have internal predecessors, (1293), 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) [2023-11-19 07:40:39,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:39,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 429 [2023-11-19 07:40:39,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:42,095 INFO L124 PetriNetUnfolderBase]: 3093/10277 cut-off events. [2023-11-19 07:40:42,095 INFO L125 PetriNetUnfolderBase]: For 11519/12149 co-relation queries the response was YES. [2023-11-19 07:40:42,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27997 conditions, 10277 events. 3093/10277 cut-off events. For 11519/12149 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 94297 event pairs, 468 based on Foata normal form. 136/10063 useless extension candidates. Maximal degree in co-relation 27977. Up to 3325 conditions per place. [2023-11-19 07:40:42,184 INFO L140 encePairwiseOnDemand]: 417/429 looper letters, 170 selfloop transitions, 67 changer transitions 0/364 dead transitions. [2023-11-19 07:40:42,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 364 transitions, 2670 flow [2023-11-19 07:40:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1372 transitions. [2023-11-19 07:40:42,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533022533022533 [2023-11-19 07:40:42,191 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1372 transitions. [2023-11-19 07:40:42,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1372 transitions. [2023-11-19 07:40:42,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:42,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1372 transitions. [2023-11-19 07:40:42,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 228.66666666666666) internal successors, (1372), 6 states have internal predecessors, (1372), 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) [2023-11-19 07:40:42,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:42,205 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:42,206 INFO L175 Difference]: Start difference. First operand has 131 places, 261 transitions, 1640 flow. Second operand 6 states and 1372 transitions. [2023-11-19 07:40:42,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 364 transitions, 2670 flow [2023-11-19 07:40:42,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 364 transitions, 2670 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:42,251 INFO L231 Difference]: Finished difference. Result has 141 places, 324 transitions, 2406 flow [2023-11-19 07:40:42,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2406, PETRI_PLACES=141, PETRI_TRANSITIONS=324} [2023-11-19 07:40:42,253 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 41 predicate places. [2023-11-19 07:40:42,254 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 324 transitions, 2406 flow [2023-11-19 07:40:42,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.5) internal successors, (1293), 6 states have internal predecessors, (1293), 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) [2023-11-19 07:40:42,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:42,256 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] [2023-11-19 07:40:42,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:40:42,256 INFO L420 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 19 more)] === [2023-11-19 07:40:42,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:42,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1616147855, now seen corresponding path program 1 times [2023-11-19 07:40:42,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:42,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605928106] [2023-11-19 07:40:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:42,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:42,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:42,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605928106] [2023-11-19 07:40:42,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605928106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:42,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:42,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:42,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126332960] [2023-11-19 07:40:42,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:42,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:43,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 429 [2023-11-19 07:40:43,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 324 transitions, 2406 flow. Second operand has 6 states, 6 states have (on average 174.16666666666666) internal successors, (1045), 6 states have internal predecessors, (1045), 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) [2023-11-19 07:40:43,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:43,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 429 [2023-11-19 07:40:43,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:48,675 INFO L124 PetriNetUnfolderBase]: 11173/24837 cut-off events. [2023-11-19 07:40:48,675 INFO L125 PetriNetUnfolderBase]: For 33847/34362 co-relation queries the response was YES. [2023-11-19 07:40:48,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80744 conditions, 24837 events. 11173/24837 cut-off events. For 33847/34362 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 204999 event pairs, 5937 based on Foata normal form. 191/24462 useless extension candidates. Maximal degree in co-relation 80719. Up to 20771 conditions per place. [2023-11-19 07:40:48,869 INFO L140 encePairwiseOnDemand]: 395/429 looper letters, 312 selfloop transitions, 156 changer transitions 0/495 dead transitions. [2023-11-19 07:40:48,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 495 transitions, 4160 flow [2023-11-19 07:40:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1246 transitions. [2023-11-19 07:40:48,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840714840714841 [2023-11-19 07:40:48,880 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1246 transitions. [2023-11-19 07:40:48,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1246 transitions. [2023-11-19 07:40:48,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:48,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1246 transitions. [2023-11-19 07:40:48,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 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) [2023-11-19 07:40:48,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:48,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:48,892 INFO L175 Difference]: Start difference. First operand has 141 places, 324 transitions, 2406 flow. Second operand 6 states and 1246 transitions. [2023-11-19 07:40:48,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 495 transitions, 4160 flow [2023-11-19 07:40:49,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 495 transitions, 4160 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:49,077 INFO L231 Difference]: Finished difference. Result has 150 places, 455 transitions, 3641 flow [2023-11-19 07:40:49,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3641, PETRI_PLACES=150, PETRI_TRANSITIONS=455} [2023-11-19 07:40:49,083 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 50 predicate places. [2023-11-19 07:40:49,083 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 455 transitions, 3641 flow [2023-11-19 07:40:49,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.16666666666666) internal successors, (1045), 6 states have internal predecessors, (1045), 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) [2023-11-19 07:40:49,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:49,084 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] [2023-11-19 07:40:49,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:40:49,085 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:40:49,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1953705922, now seen corresponding path program 1 times [2023-11-19 07:40:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:49,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765562398] [2023-11-19 07:40:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:49,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:49,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765562398] [2023-11-19 07:40:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765562398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:49,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:49,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:49,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42824270] [2023-11-19 07:40:49,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:49,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:49,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:49,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:49,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 429 [2023-11-19 07:40:49,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 455 transitions, 3641 flow. Second operand has 6 states, 6 states have (on average 173.83333333333334) internal successors, (1043), 6 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:49,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:49,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 429 [2023-11-19 07:40:49,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:55,887 INFO L124 PetriNetUnfolderBase]: 10947/24648 cut-off events. [2023-11-19 07:40:55,887 INFO L125 PetriNetUnfolderBase]: For 47289/48063 co-relation queries the response was YES. [2023-11-19 07:40:55,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88337 conditions, 24648 events. 10947/24648 cut-off events. For 47289/48063 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 205537 event pairs, 5307 based on Foata normal form. 59/23911 useless extension candidates. Maximal degree in co-relation 88307. Up to 20519 conditions per place. [2023-11-19 07:40:56,101 INFO L140 encePairwiseOnDemand]: 399/429 looper letters, 417 selfloop transitions, 146 changer transitions 0/594 dead transitions. [2023-11-19 07:40:56,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 594 transitions, 5397 flow [2023-11-19 07:40:56,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:56,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:56,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1220 transitions. [2023-11-19 07:40:56,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473970473970474 [2023-11-19 07:40:56,109 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1220 transitions. [2023-11-19 07:40:56,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1220 transitions. [2023-11-19 07:40:56,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:56,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1220 transitions. [2023-11-19 07:40:56,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 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) [2023-11-19 07:40:56,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:56,122 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-11-19 07:40:56,122 INFO L175 Difference]: Start difference. First operand has 150 places, 455 transitions, 3641 flow. Second operand 6 states and 1220 transitions. [2023-11-19 07:40:56,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 594 transitions, 5397 flow [2023-11-19 07:40:56,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 594 transitions, 5157 flow, removed 120 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:56,509 INFO L231 Difference]: Finished difference. Result has 159 places, 562 transitions, 4421 flow [2023-11-19 07:40:56,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4421, PETRI_PLACES=159, PETRI_TRANSITIONS=562} [2023-11-19 07:40:56,511 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 59 predicate places. [2023-11-19 07:40:56,511 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 562 transitions, 4421 flow [2023-11-19 07:40:56,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.83333333333334) internal successors, (1043), 6 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:56,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:56,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:56,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:40:56,512 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:40:56,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1189496645, now seen corresponding path program 1 times [2023-11-19 07:40:56,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:56,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181597162] [2023-11-19 07:40:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:56,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat