./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:42:04,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:42:04,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:42:04,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:42:04,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:42:04,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:42:04,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:42:04,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:42:04,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:42:04,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:42:04,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:42:04,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:42:04,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:42:04,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:42:04,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:42:04,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:42:04,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:42:04,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:42:04,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:42:04,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:42:04,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:42:04,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:42:04,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:42:04,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:42:04,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:42:04,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:42:04,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:42:04,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:42:04,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:42:04,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:42:04,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:42:04,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:42:04,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:42:04,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:42:04,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:42:04,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:42:04,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:42:04,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:42:04,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:42:04,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:42:04,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:42:04,217 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 11:42:04,234 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:42:04,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:42:04,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:42:04,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:42:04,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:42:04,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:42:04,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:42:04,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:42:04,236 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:42:04,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:42:04,236 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:42:04,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:42:04,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:42:04,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:42:04,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:42:04,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:42:04,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:42:04,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:42:04,247 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 11:42:04,247 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:42:04,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:42:04,248 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:42:04,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:42:04,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:42:04,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:42:04,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:42:04,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:42:04,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:42:04,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:42:04,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:42:04,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:42:04,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:42:04,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:42:04,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:42:04,249 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:42:04,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:42:04,249 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:42:04,250 INFO L138 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_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d [2022-12-13 11:42:04,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:42:04,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:42:04,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:42:04,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:42:04,431 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:42:04,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2022-12-13 11:42:07,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:42:07,255 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:42:07,256 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2022-12-13 11:42:07,269 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/data/b67f1c0f7/5759dc2ec2554a5fa2c4a35ba5c53b88/FLAG5284d2eb3 [2022-12-13 11:42:07,279 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/data/b67f1c0f7/5759dc2ec2554a5fa2c4a35ba5c53b88 [2022-12-13 11:42:07,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:42:07,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:42:07,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:42:07,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:42:07,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:42:07,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f61911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07, skipping insertion in model container [2022-12-13 11:42:07,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:42:07,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:42:07,634 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2022-12-13 11:42:07,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:42:07,681 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:42:07,704 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2022-12-13 11:42:07,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:42:07,760 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:42:07,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07 WrapperNode [2022-12-13 11:42:07,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:42:07,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:42:07,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:42:07,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:42:07,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,813 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 517 [2022-12-13 11:42:07,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:42:07,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:42:07,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:42:07,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:42:07,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,853 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:42:07,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:42:07,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:42:07,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:42:07,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (1/1) ... [2022-12-13 11:42:07,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:42:07,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:42:07,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:42:07,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531db054-1d21-42e9-805c-b561dc774402/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:42:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:42:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 11:42:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 11:42:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 11:42:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:42:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:42:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 11:42:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 11:42:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:42:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 11:42:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 11:42:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:42:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 11:42:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-12-13 11:42:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-12-13 11:42:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:42:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:42:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:42:07,920 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:42:08,053 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:42:08,054 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:42:08,599 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:42:08,609 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:42:08,610 INFO L300 CfgBuilder]: Removed 28 assume(true) statements. [2022-12-13 11:42:08,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:42:08 BoogieIcfgContainer [2022-12-13 11:42:08,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:42:08,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:42:08,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:42:08,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:42:08,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:42:07" (1/3) ... [2022-12-13 11:42:08,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ab6b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:42:08, skipping insertion in model container [2022-12-13 11:42:08,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:42:07" (2/3) ... [2022-12-13 11:42:08,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ab6b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:42:08, skipping insertion in model container [2022-12-13 11:42:08,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:42:08" (3/3) ... [2022-12-13 11:42:08,620 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2022-12-13 11:42:08,627 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:42:08,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:42:08,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-12-13 11:42:08,634 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:42:08,772 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-12-13 11:42:08,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 574 transitions, 1190 flow [2022-12-13 11:42:09,329 INFO L130 PetriNetUnfolder]: 165/1628 cut-off events. [2022-12-13 11:42:09,329 INFO L131 PetriNetUnfolder]: For 36/66 co-relation queries the response was YES. [2022-12-13 11:42:09,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 1628 events. 165/1628 cut-off events. For 36/66 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11565 event pairs, 0 based on Foata normal form. 0/1365 useless extension candidates. Maximal degree in co-relation 836. Up to 16 conditions per place. [2022-12-13 11:42:09,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 535 places, 574 transitions, 1190 flow [2022-12-13 11:42:09,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 535 places, 574 transitions, 1190 flow [2022-12-13 11:42:09,390 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:42:09,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 535 places, 574 transitions, 1190 flow [2022-12-13 11:42:09,403 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 535 places, 574 transitions, 1190 flow [2022-12-13 11:42:09,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 574 transitions, 1190 flow [2022-12-13 11:42:09,728 INFO L130 PetriNetUnfolder]: 165/1628 cut-off events. [2022-12-13 11:42:09,729 INFO L131 PetriNetUnfolder]: For 36/66 co-relation queries the response was YES. [2022-12-13 11:42:09,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 1628 events. 165/1628 cut-off events. For 36/66 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11565 event pairs, 0 based on Foata normal form. 0/1365 useless extension candidates. Maximal degree in co-relation 836. Up to 16 conditions per place. [2022-12-13 11:42:09,807 INFO L119 LiptonReduction]: Number of co-enabled transitions 142406 [2022-12-13 11:42:39,746 WARN L233 SmtUtils]: Spent 9.36s on a formula simplification that was a NOOP. DAG size: 151 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:42:46,069 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification that was a NOOP. DAG size: 139 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:42:55,291 WARN L233 SmtUtils]: Spent 9.22s on a formula simplification that was a NOOP. DAG size: 151 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:43:00,782 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 139 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:43:14,159 WARN L233 SmtUtils]: Spent 13.35s on a formula simplification. DAG size of input: 299 DAG size of output: 297 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:43:23,729 WARN L233 SmtUtils]: Spent 9.57s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:44:03,685 WARN L233 SmtUtils]: Spent 39.95s on a formula simplification. DAG size of input: 299 DAG size of output: 297 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:44:07,300 INFO L134 LiptonReduction]: Checked pairs total: 744483 [2022-12-13 11:44:07,301 INFO L136 LiptonReduction]: Total number of compositions: 387 [2022-12-13 11:44:07,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:44:07,314 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@684a6766, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:44:07,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-12-13 11:44:07,315 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 11:44:07,315 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:44:07,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:44:07,315 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 11:44:07,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-12-13 11:44:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 1 times [2022-12-13 11:44:07,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:07,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939995724] [2022-12-13 11:44:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:07,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:07,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:07,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939995724] [2022-12-13 11:44:07,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939995724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:07,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:44:07,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 11:44:07,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002361541] [2022-12-13 11:44:07,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:07,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:44:07,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:07,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:44:07,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:44:07,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 530 out of 961 [2022-12-13 11:44:07,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 264 transitions, 570 flow. Second operand has 2 states, 2 states have (on average 530.5) internal successors, (1061), 2 states have internal predecessors, (1061), 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) [2022-12-13 11:44:07,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:44:07,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 530 of 961 [2022-12-13 11:44:07,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:45:11,480 INFO L130 PetriNetUnfolder]: 401659/791916 cut-off events. [2022-12-13 11:45:11,480 INFO L131 PetriNetUnfolder]: For 8749/8749 co-relation queries the response was YES. [2022-12-13 11:45:13,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328567 conditions, 791916 events. 401659/791916 cut-off events. For 8749/8749 co-relation queries the response was YES. Maximal size of possible extension queue 12957. Compared 10376301 event pairs, 367428 based on Foata normal form. 45837/741954 useless extension candidates. Maximal degree in co-relation 1253033. Up to 531100 conditions per place. [2022-12-13 11:45:16,148 INFO L137 encePairwiseOnDemand]: 930/961 looper letters, 98 selfloop transitions, 0 changer transitions 0/232 dead transitions. [2022-12-13 11:45:16,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 232 transitions, 702 flow [2022-12-13 11:45:16,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:45:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 11:45:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1189 transitions. [2022-12-13 11:45:16,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6186264308012487 [2022-12-13 11:45:16,166 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1189 transitions. [2022-12-13 11:45:16,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1189 transitions. [2022-12-13 11:45:16,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:45:16,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1189 transitions. [2022-12-13 11:45:16,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 594.5) internal successors, (1189), 2 states have internal predecessors, (1189), 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) [2022-12-13 11:45:16,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 961.0) internal successors, (2883), 3 states have internal predecessors, (2883), 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) [2022-12-13 11:45:16,186 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 961.0) internal successors, (2883), 3 states have internal predecessors, (2883), 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) [2022-12-13 11:45:16,189 INFO L175 Difference]: Start difference. First operand has 235 places, 264 transitions, 570 flow. Second operand 2 states and 1189 transitions. [2022-12-13 11:45:16,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 232 transitions, 702 flow [2022-12-13 11:45:17,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 232 transitions, 702 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:45:17,346 INFO L231 Difference]: Finished difference. Result has 226 places, 232 transitions, 506 flow [2022-12-13 11:45:17,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=961, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=506, PETRI_PLACES=226, PETRI_TRANSITIONS=232} [2022-12-13 11:45:17,350 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, -9 predicate places. [2022-12-13 11:45:17,350 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 232 transitions, 506 flow [2022-12-13 11:45:17,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 530.5) internal successors, (1061), 2 states have internal predecessors, (1061), 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) [2022-12-13 11:45:17,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:45:17,351 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 11:45:17,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:45:17,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-12-13 11:45:17,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:17,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1713124884, now seen corresponding path program 1 times [2022-12-13 11:45:17,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:17,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316845651] [2022-12-13 11:45:17,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:17,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:45:17,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:45:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:45:17,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:45:17,469 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:45:17,470 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2022-12-13 11:45:17,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (58 of 60 remaining) [2022-12-13 11:45:17,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (57 of 60 remaining) [2022-12-13 11:45:17,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (56 of 60 remaining) [2022-12-13 11:45:17,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (55 of 60 remaining) [2022-12-13 11:45:17,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (54 of 60 remaining) [2022-12-13 11:45:17,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (53 of 60 remaining) [2022-12-13 11:45:17,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (52 of 60 remaining) [2022-12-13 11:45:17,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (51 of 60 remaining) [2022-12-13 11:45:17,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONDATA_RACE (50 of 60 remaining) [2022-12-13 11:45:17,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONDATA_RACE (49 of 60 remaining) [2022-12-13 11:45:17,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONDATA_RACE (48 of 60 remaining) [2022-12-13 11:45:17,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr7ASSERT_VIOLATIONDATA_RACE (47 of 60 remaining) [2022-12-13 11:45:17,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONDATA_RACE (46 of 60 remaining) [2022-12-13 11:45:17,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr5ASSERT_VIOLATIONDATA_RACE (45 of 60 remaining) [2022-12-13 11:45:17,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr4ASSERT_VIOLATIONDATA_RACE (44 of 60 remaining) [2022-12-13 11:45:17,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr6ASSERT_VIOLATIONDATA_RACE (43 of 60 remaining) [2022-12-13 11:45:17,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (42 of 60 remaining) [2022-12-13 11:45:17,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (41 of 60 remaining) [2022-12-13 11:45:17,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (40 of 60 remaining) [2022-12-13 11:45:17,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (39 of 60 remaining) [2022-12-13 11:45:17,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (38 of 60 remaining) [2022-12-13 11:45:17,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (37 of 60 remaining) [2022-12-13 11:45:17,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (36 of 60 remaining) [2022-12-13 11:45:17,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (35 of 60 remaining) [2022-12-13 11:45:17,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (34 of 60 remaining) [2022-12-13 11:45:17,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (33 of 60 remaining) [2022-12-13 11:45:17,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (32 of 60 remaining) [2022-12-13 11:45:17,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 60 remaining) [2022-12-13 11:45:17,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 60 remaining) [2022-12-13 11:45:17,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (29 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (28 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (27 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (26 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (25 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (24 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6ASSERT_VIOLATIONDATA_RACE (23 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (22 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (21 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (20 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (19 of 60 remaining) [2022-12-13 11:45:17,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 60 remaining) [2022-12-13 11:45:17,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (17 of 60 remaining) [2022-12-13 11:45:17,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (16 of 60 remaining) [2022-12-13 11:45:17,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (15 of 60 remaining) [2022-12-13 11:45:17,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 60 remaining) [2022-12-13 11:45:17,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 60 remaining) [2022-12-13 11:45:17,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 60 remaining) [2022-12-13 11:45:17,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr7ASSERT_VIOLATIONDATA_RACE (11 of 60 remaining) [2022-12-13 11:45:17,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 60 remaining) [2022-12-13 11:45:17,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 60 remaining) [2022-12-13 11:45:17,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 60 remaining) [2022-12-13 11:45:17,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr6ASSERT_VIOLATIONDATA_RACE (7 of 60 remaining) [2022-12-13 11:45:17,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 60 remaining) [2022-12-13 11:45:17,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 60 remaining) [2022-12-13 11:45:17,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (4 of 60 remaining) [2022-12-13 11:45:17,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 60 remaining) [2022-12-13 11:45:17,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 60 remaining) [2022-12-13 11:45:17,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 60 remaining) [2022-12-13 11:45:17,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6ASSERT_VIOLATIONDATA_RACE (0 of 60 remaining) [2022-12-13 11:45:17,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:45:17,478 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 11:45:17,479 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:45:17,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 11:45:17,558 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-13 11:45:17,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 868 places, 941 transitions, 1972 flow [2022-12-13 11:45:20,433 INFO L130 PetriNetUnfolder]: 1132/8056 cut-off events. [2022-12-13 11:45:20,433 INFO L131 PetriNetUnfolder]: For 602/839 co-relation queries the response was YES. [2022-12-13 11:45:20,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8730 conditions, 8056 events. 1132/8056 cut-off events. For 602/839 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 82305 event pairs, 22 based on Foata normal form. 0/6754 useless extension candidates. Maximal degree in co-relation 4953. Up to 192 conditions per place. [2022-12-13 11:45:20,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 868 places, 941 transitions, 1972 flow [2022-12-13 11:45:20,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 868 places, 941 transitions, 1972 flow [2022-12-13 11:45:20,696 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:45:20,696 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 868 places, 941 transitions, 1972 flow [2022-12-13 11:45:20,696 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 868 places, 941 transitions, 1972 flow [2022-12-13 11:45:20,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 868 places, 941 transitions, 1972 flow [2022-12-13 11:45:23,389 INFO L130 PetriNetUnfolder]: 1132/8056 cut-off events. [2022-12-13 11:45:23,389 INFO L131 PetriNetUnfolder]: For 602/839 co-relation queries the response was YES. [2022-12-13 11:45:23,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8730 conditions, 8056 events. 1132/8056 cut-off events. For 602/839 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 82305 event pairs, 22 based on Foata normal form. 0/6754 useless extension candidates. Maximal degree in co-relation 4953. Up to 192 conditions per place. [2022-12-13 11:45:24,435 INFO L119 LiptonReduction]: Number of co-enabled transitions 551536 [2022-12-13 11:46:05,885 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 248 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:46:11,667 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 240 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:46:58,871 WARN L233 SmtUtils]: Spent 46.98s on a formula simplification. DAG size of input: 293 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:47:16,531 WARN L233 SmtUtils]: Spent 17.66s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:47:31,548 WARN L233 SmtUtils]: Spent 15.02s on a formula simplification. DAG size of input: 293 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:47:41,026 WARN L233 SmtUtils]: Spent 9.48s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:47:41,048 INFO L134 LiptonReduction]: Checked pairs total: 3958517 [2022-12-13 11:47:41,048 INFO L136 LiptonReduction]: Total number of compositions: 569 [2022-12-13 11:47:41,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:47:41,051 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@684a6766, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:47:41,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2022-12-13 11:47:41,051 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 11:47:41,051 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:47:41,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:47:41,051 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 11:47:41,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2022-12-13 11:47:41,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash 3960, now seen corresponding path program 1 times [2022-12-13 11:47:41,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:41,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531932185] [2022-12-13 11:47:41,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:41,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:47:41,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:41,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531932185] [2022-12-13 11:47:41,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531932185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:41,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:41,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 11:47:41,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161705562] [2022-12-13 11:47:41,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:41,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:47:41,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:47:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:47:41,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 859 out of 1510 [2022-12-13 11:47:41,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 480 transitions, 1050 flow. Second operand has 2 states, 2 states have (on average 859.5) internal successors, (1719), 2 states have internal predecessors, (1719), 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) [2022-12-13 11:47:41,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:47:41,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 859 of 1510 [2022-12-13 11:47:41,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand