./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f 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_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8 --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 c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- 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-e04fb08 [2022-11-16 12:15:10,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:15:10,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:15:10,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:15:10,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:15:10,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:15:10,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:15:10,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:15:10,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:15:10,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:15:10,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:15:10,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:15:10,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:15:10,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:15:10,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:15:10,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:15:10,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:15:10,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:15:10,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:15:10,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:15:10,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:15:10,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:15:10,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:15:10,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:15:10,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:15:10,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:15:10,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:15:10,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:15:10,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:15:10,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:15:10,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:15:10,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:15:10,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:15:10,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:15:10,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:15:10,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:15:10,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:15:10,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:15:10,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:15:10,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:15:10,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:15:10,373 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 12:15:10,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:15:10,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:15:10,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:15:10,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:15:10,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:15:10,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:15:10,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:15:10,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:15:10,424 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:15:10,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:15:10,425 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:15:10,425 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:15:10,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:15:10,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:15:10,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:15:10,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:15:10,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:15:10,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:15:10,427 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:15:10,427 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:15:10,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:15:10,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:15:10,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:15:10,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:15:10,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:15:10,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:15:10,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:10,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:15:10,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:15:10,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:15:10,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:15:10,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:15:10,432 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:15:10,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:15:10,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:15:10,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2022-11-16 12:15:10,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:15:10,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:15:10,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:15:10,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:15:10,784 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:15:10,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-11-16 12:15:10,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/data/60a49871f/61e0b7444fff4c109fc1e69a49c4116d/FLAGbb6c72a65 [2022-11-16 12:15:11,425 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:15:11,425 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-11-16 12:15:11,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/data/60a49871f/61e0b7444fff4c109fc1e69a49c4116d/FLAGbb6c72a65 [2022-11-16 12:15:11,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/data/60a49871f/61e0b7444fff4c109fc1e69a49c4116d [2022-11-16 12:15:11,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:15:11,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:15:11,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:11,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:15:11,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:15:11,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:11" (1/1) ... [2022-11-16 12:15:11,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71434d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:11, skipping insertion in model container [2022-11-16 12:15:11,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:11" (1/1) ... [2022-11-16 12:15:11,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:15:11,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:15:12,136 WARN L229 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_0fc9ac62-3019-4f61-9417-ec57af5f537a/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-11-16 12:15:12,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:12,157 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:15:12,229 WARN L229 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_0fc9ac62-3019-4f61-9417-ec57af5f537a/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-11-16 12:15:12,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:12,261 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:15:12,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12 WrapperNode [2022-11-16 12:15:12,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:12,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:12,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:15:12,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:15:12,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,359 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 574 [2022-11-16 12:15:12,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:12,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:15:12,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:15:12,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:15:12,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,443 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:15:12,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:15:12,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:15:12,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:15:12,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (1/1) ... [2022-11-16 12:15:12,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:12,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:12,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:15:12,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc9ac62-3019-4f61-9417-ec57af5f537a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:15:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:15:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:15:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:15:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:15:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:15:12,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:15:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:15:12,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:15:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:15:12,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:15:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 12:15:12,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 12:15:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:15:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-16 12:15:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-16 12:15:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-16 12:15:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-16 12:15:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:15:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:15:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:15:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:15:12,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:15:12,561 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:15:12,752 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:15:12,754 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:15:13,751 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:15:14,199 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:15:14,200 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:15:14,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:14 BoogieIcfgContainer [2022-11-16 12:15:14,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:15:14,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:15:14,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:15:14,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:15:14,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:15:11" (1/3) ... [2022-11-16 12:15:14,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9d106e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:15:14, skipping insertion in model container [2022-11-16 12:15:14,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:12" (2/3) ... [2022-11-16 12:15:14,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9d106e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:15:14, skipping insertion in model container [2022-11-16 12:15:14,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:14" (3/3) ... [2022-11-16 12:15:14,216 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-11-16 12:15:14,226 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:15:14,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:15:14,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 88 error locations. [2022-11-16 12:15:14,238 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:15:14,408 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-16 12:15:14,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 388 places, 374 transitions, 796 flow [2022-11-16 12:15:14,632 INFO L130 PetriNetUnfolder]: 5/368 cut-off events. [2022-11-16 12:15:14,632 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:15:14,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 368 events. 5/368 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 399 event pairs, 0 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 276. Up to 2 conditions per place. [2022-11-16 12:15:14,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 388 places, 374 transitions, 796 flow [2022-11-16 12:15:14,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 342 transitions, 720 flow [2022-11-16 12:15:14,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:15:14,667 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;@d74c037, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:15:14,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 159 error locations. [2022-11-16 12:15:14,674 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-11-16 12:15:14,675 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:15:14,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:14,676 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:14,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 155 more)] === [2022-11-16 12:15:14,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:14,682 INFO L85 PathProgramCache]: Analyzing trace with hash -463599216, now seen corresponding path program 1 times [2022-11-16 12:15:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:14,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605164672] [2022-11-16 12:15:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:14,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:14,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:14,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605164672] [2022-11-16 12:15:14,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605164672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:14,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:14,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:15:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968050330] [2022-11-16 12:15:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:14,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:15:14,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:15:14,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:15:14,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 374 [2022-11-16 12:15:15,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 342 transitions, 720 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 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) [2022-11-16 12:15:15,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:15,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 374 [2022-11-16 12:15:15,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:44,113 INFO L130 PetriNetUnfolder]: 104692/145919 cut-off events. [2022-11-16 12:15:44,114 INFO L131 PetriNetUnfolder]: For 16759/20264 co-relation queries the response was YES. [2022-11-16 12:15:44,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291243 conditions, 145919 events. 104692/145919 cut-off events. For 16759/20264 co-relation queries the response was YES. Maximal size of possible extension queue 4659. Compared 1044434 event pairs, 104689 based on Foata normal form. 1/145329 useless extension candidates. Maximal degree in co-relation 289540. Up to 132035 conditions per place. [2022-11-16 12:15:45,548 INFO L137 encePairwiseOnDemand]: 305/374 looper letters, 40 selfloop transitions, 2 changer transitions 1/275 dead transitions. [2022-11-16 12:15:45,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 275 transitions, 670 flow [2022-11-16 12:15:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:15:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:15:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 898 transitions. [2022-11-16 12:15:45,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8003565062388592 [2022-11-16 12:15:45,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 898 transitions. [2022-11-16 12:15:45,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 898 transitions. [2022-11-16 12:15:45,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:45,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 898 transitions. [2022-11-16 12:15:45,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 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) [2022-11-16 12:15:45,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:45,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:45,597 INFO L175 Difference]: Start difference. First operand has 357 places, 342 transitions, 720 flow. Second operand 3 states and 898 transitions. [2022-11-16 12:15:45,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 275 transitions, 670 flow [2022-11-16 12:15:45,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 275 transitions, 646 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-16 12:15:45,646 INFO L231 Difference]: Finished difference. Result has 281 places, 274 transitions, 564 flow [2022-11-16 12:15:45,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=564, PETRI_PLACES=281, PETRI_TRANSITIONS=274} [2022-11-16 12:15:45,653 INFO L288 CegarLoopForPetriNet]: 357 programPoint places, -76 predicate places. [2022-11-16 12:15:45,654 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 274 transitions, 564 flow [2022-11-16 12:15:45,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 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) [2022-11-16 12:15:45,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:45,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:45,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:15:45,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 155 more)] === [2022-11-16 12:15:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1765571057, now seen corresponding path program 1 times [2022-11-16 12:15:45,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:45,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578015026] [2022-11-16 12:15:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:45,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:45,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:45,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578015026] [2022-11-16 12:15:45,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578015026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:45,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:45,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:15:45,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692727227] [2022-11-16 12:15:45,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:45,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:15:45,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:45,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:15:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:15:45,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 374 [2022-11-16 12:15:45,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 274 transitions, 564 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 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) [2022-11-16 12:15:45,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:45,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 374 [2022-11-16 12:15:45,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand