./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longer.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_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/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_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/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_831f79db-962e-4fb0-a524-3220d29ca989/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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:59,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:59,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:00:59,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:59,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:59,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:59,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:59,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:59,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:59,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:59,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:59,189 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:59,190 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:59,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:59,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:59,196 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:59,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:59,198 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:59,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:59,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:59,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:59,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:59,200 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:00:59,200 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:59,201 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:59,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:59,202 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:59,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:59,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:59,204 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:59,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:59,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:59,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:59,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:59,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:59,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:59,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:59,207 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:59,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:59,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:59,208 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:59,208 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_831f79db-962e-4fb0-a524-3220d29ca989/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2023-11-19 08:00:59,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:59,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:59,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:59,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:59,521 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:59,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/queue_ok_longer.i [2023-11-19 08:01:02,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:03,037 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:03,041 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/sv-benchmarks/c/pthread/queue_ok_longer.i [2023-11-19 08:01:03,095 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu/data/88d1eea21/10d779f7a647433a8c7676a811cacd55/FLAGb3ba3c2e1 [2023-11-19 08:01:03,112 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu/data/88d1eea21/10d779f7a647433a8c7676a811cacd55 [2023-11-19 08:01:03,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:03,122 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:03,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:03,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:03,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:03,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:03,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4031f351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03, skipping insertion in model container [2023-11-19 08:01:03,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:03,235 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:03,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:03,773 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:03,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:03,919 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:03,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03 WrapperNode [2023-11-19 08:01:03,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:03,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:03,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:03,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:03,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:03,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:04,017 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 393 [2023-11-19 08:01:04,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:04,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:04,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:04,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:04,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:04,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:04,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:04,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:04,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:04,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:04,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:04,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:04,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:04,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:04,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:04,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:04,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (1/1) ... [2023-11-19 08:01:04,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:04,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:04,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:04,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831f79db-962e-4fb0-a524-3220d29ca989/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 08:01:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 08:01:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 08:01:04,189 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 08:01:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:01:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:01:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:04,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:04,191 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 08:01:04,348 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:04,351 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:05,147 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:05,171 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:05,171 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:01:05,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:05 BoogieIcfgContainer [2023-11-19 08:01:05,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:05,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:05,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:05,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:05,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:03" (1/3) ... [2023-11-19 08:01:05,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b52ed06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:05, skipping insertion in model container [2023-11-19 08:01:05,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:03" (2/3) ... [2023-11-19 08:01:05,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b52ed06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:05, skipping insertion in model container [2023-11-19 08:01:05,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:05" (3/3) ... [2023-11-19 08:01:05,230 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2023-11-19 08:01:05,244 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:01:05,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:05,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2023-11-19 08:01:05,255 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:01:05,449 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:01:05,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 454 transitions, 922 flow [2023-11-19 08:01:05,798 INFO L124 PetriNetUnfolderBase]: 15/452 cut-off events. [2023-11-19 08:01:05,798 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:01:05,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 452 events. 15/452 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 806 event pairs, 0 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 321. Up to 3 conditions per place. [2023-11-19 08:01:05,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 454 transitions, 922 flow [2023-11-19 08:01:05,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 442 transitions, 893 flow [2023-11-19 08:01:05,862 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:05,881 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 442 transitions, 893 flow [2023-11-19 08:01:05,883 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 442 transitions, 893 flow [2023-11-19 08:01:05,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 442 transitions, 893 flow [2023-11-19 08:01:06,036 INFO L124 PetriNetUnfolderBase]: 15/442 cut-off events. [2023-11-19 08:01:06,036 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:01:06,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 442 events. 15/442 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 734 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 321. Up to 3 conditions per place. [2023-11-19 08:01:06,079 INFO L119 LiptonReduction]: Number of co-enabled transitions 54888 [2023-11-19 08:01:56,022 WARN L293 SmtUtils]: Spent 22.87s on a formula simplification. DAG size of input: 220 DAG size of output: 209 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)