./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:00:52,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:00:52,432 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 06:00:52,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:00:52,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:00:52,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:00:52,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:00:52,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:00:52,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:00:52,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:00:52,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:00:52,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:00:52,468 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:00:52,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:00:52,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:00:52,469 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:00:52,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:00:52,470 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:00:52,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:00:52,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:00:52,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:00:52,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:00:52,473 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 06:00:52,473 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:00:52,474 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:00:52,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:00:52,475 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:00:52,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:00:52,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:00:52,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:00:52,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:00:52,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:00:52,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:00:52,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:00:52,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:00:52,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:00:52,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:00:52,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:00:52,478 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:00:52,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:00:52,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:00:52,479 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 [2023-11-29 06:00:52,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:00:52,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:00:52,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:00:52,735 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:00:52,735 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:00:52,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2023-11-29 06:00:55,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:00:55,687 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:00:55,688 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2023-11-29 06:00:55,697 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/data/d29ef0c0b/037f1f7bf5674cbba0d53d2f5b2e4fe4/FLAG26bf60971 [2023-11-29 06:00:56,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/data/d29ef0c0b/037f1f7bf5674cbba0d53d2f5b2e4fe4 [2023-11-29 06:00:56,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:00:56,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:00:56,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:00:56,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:00:56,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:00:56,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3e1653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56, skipping insertion in model container [2023-11-29 06:00:56,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,072 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:00:56,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:00:56,286 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:00:56,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:00:56,356 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:00:56,356 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:00:56,364 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:00:56,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56 WrapperNode [2023-11-29 06:00:56,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:00:56,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:00:56,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:00:56,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:00:56,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,432 INFO L138 Inliner]: procedures = 23, calls = 177, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 1086 [2023-11-29 06:00:56,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:00:56,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:00:56,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:00:56,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:00:56,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:00:56,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:00:56,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:00:56,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:00:56,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (1/1) ... [2023-11-29 06:00:56,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:00:56,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:56,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:00:56,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6275c5a-817f-44d3-99f2-26edafd4a593/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:00:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:00:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 06:00:56,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 06:00:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 06:00:56,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 06:00:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 06:00:56,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 06:00:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 06:00:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 06:00:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 06:00:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:00:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 06:00:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 06:00:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 06:00:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:00:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:00:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 06:00:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:00:56,572 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:00:56,716 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:00:56,718 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:00:57,754 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:00:58,487 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:00:58,487 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 06:00:58,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:00:58 BoogieIcfgContainer [2023-11-29 06:00:58,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:00:58,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:00:58,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:00:58,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:00:58,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:00:56" (1/3) ... [2023-11-29 06:00:58,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247bd7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:00:58, skipping insertion in model container [2023-11-29 06:00:58,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:56" (2/3) ... [2023-11-29 06:00:58,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247bd7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:00:58, skipping insertion in model container [2023-11-29 06:00:58,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:00:58" (3/3) ... [2023-11-29 06:00:58,500 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2023-11-29 06:00:58,510 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:00:58,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:00:58,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 195 error locations. [2023-11-29 06:00:58,522 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:00:58,673 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 06:00:58,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 547 places, 545 transitions, 1118 flow [2023-11-29 06:00:58,930 INFO L124 PetriNetUnfolderBase]: 11/541 cut-off events. [2023-11-29 06:00:58,930 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 06:00:58,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 541 events. 11/541 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1410 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 420. Up to 2 conditions per place. [2023-11-29 06:00:58,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 547 places, 545 transitions, 1118 flow [2023-11-29 06:00:58,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 519 places, 516 transitions, 1056 flow [2023-11-29 06:00:58,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:00:58,970 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53e32f19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:00:58,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 367 error locations. [2023-11-29 06:00:58,976 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:00:58,976 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-11-29 06:00:58,976 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:00:58,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:58,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:58,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err4ASSERT_VIOLATIONDATA_RACE (and 363 more)] === [2023-11-29 06:00:58,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:58,982 INFO L85 PathProgramCache]: Analyzing trace with hash 91441700, now seen corresponding path program 1 times [2023-11-29 06:00:58,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:58,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085781119] [2023-11-29 06:00:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:58,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:59,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:59,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085781119] [2023-11-29 06:00:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085781119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:00:59,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:00:59,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:00:59,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650874585] [2023-11-29 06:00:59,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:00:59,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:00:59,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:59,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:00:59,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:00:59,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 545 [2023-11-29 06:00:59,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 516 transitions, 1056 flow. Second operand has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:00:59,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:59,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 545 [2023-11-29 06:00:59,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:53,139 INFO L124 PetriNetUnfolderBase]: 208632/300578 cut-off events. [2023-11-29 06:01:53,139 INFO L125 PetriNetUnfolderBase]: For 17476/17476 co-relation queries the response was YES. [2023-11-29 06:01:54,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596594 conditions, 300578 events. 208632/300578 cut-off events. For 17476/17476 co-relation queries the response was YES. Maximal size of possible extension queue 5066. Compared 2360202 event pairs, 204255 based on Foata normal form. 1/295921 useless extension candidates. Maximal degree in co-relation 594056. Up to 282902 conditions per place. [2023-11-29 06:01:56,034 INFO L140 encePairwiseOnDemand]: 373/545 looper letters, 73 selfloop transitions, 2 changer transitions 1/346 dead transitions. [2023-11-29 06:01:56,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 346 transitions, 866 flow [2023-11-29 06:01:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:01:56,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:01:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1136 transitions. [2023-11-29 06:01:56,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6948012232415902 [2023-11-29 06:01:56,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1136 transitions. [2023-11-29 06:01:56,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1136 transitions. [2023-11-29 06:01:56,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:56,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1136 transitions. [2023-11-29 06:01:56,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:56,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:56,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:56,080 INFO L175 Difference]: Start difference. First operand has 519 places, 516 transitions, 1056 flow. Second operand 3 states and 1136 transitions. [2023-11-29 06:01:56,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 346 transitions, 866 flow [2023-11-29 06:01:56,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 346 transitions, 850 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 06:01:56,140 INFO L231 Difference]: Finished difference. Result has 344 places, 345 transitions, 702 flow [2023-11-29 06:01:56,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=545, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=344, PETRI_TRANSITIONS=345} [2023-11-29 06:01:56,146 INFO L281 CegarLoopForPetriNet]: 519 programPoint places, -175 predicate places. [2023-11-29 06:01:56,147 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 345 transitions, 702 flow [2023-11-29 06:01:56,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:56,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:56,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:56,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:01:56,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err4ASSERT_VIOLATIONDATA_RACE (and 363 more)] === [2023-11-29 06:01:56,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash 613087941, now seen corresponding path program 1 times [2023-11-29 06:01:56,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:56,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058975453] [2023-11-29 06:01:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:56,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:56,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:01:56,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:56,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058975453] [2023-11-29 06:01:56,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058975453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:56,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:56,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:01:56,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725816754] [2023-11-29 06:01:56,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:56,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:01:56,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:56,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:01:56,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:01:56,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 545 [2023-11-29 06:01:56,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 345 transitions, 702 flow. Second operand has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:56,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:56,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 545 [2023-11-29 06:01:56,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:02:43,160 INFO L124 PetriNetUnfolderBase]: 208632/300576 cut-off events. [2023-11-29 06:02:43,160 INFO L125 PetriNetUnfolderBase]: For 4369/4369 co-relation queries the response was YES. [2023-11-29 06:02:44,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587853 conditions, 300576 events. 208632/300576 cut-off events. For 4369/4369 co-relation queries the response was YES. Maximal size of possible extension queue 5066. Compared 2359465 event pairs, 204255 based on Foata normal form. 0/295920 useless extension candidates. Maximal degree in co-relation 587815. Up to 282902 conditions per place. [2023-11-29 06:02:45,487 INFO L140 encePairwiseOnDemand]: 542/545 looper letters, 73 selfloop transitions, 2 changer transitions 0/344 dead transitions. [2023-11-29 06:02:45,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 344 transitions, 850 flow [2023-11-29 06:02:45,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:02:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:02:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 967 transitions. [2023-11-29 06:02:45,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914373088685015 [2023-11-29 06:02:45,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 967 transitions. [2023-11-29 06:02:45,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 967 transitions. [2023-11-29 06:02:45,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:02:45,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 967 transitions. [2023-11-29 06:02:45,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:45,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:45,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:45,504 INFO L175 Difference]: Start difference. First operand has 344 places, 345 transitions, 702 flow. Second operand 3 states and 967 transitions. [2023-11-29 06:02:45,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 344 transitions, 850 flow [2023-11-29 06:02:45,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 344 transitions, 846 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:02:45,513 INFO L231 Difference]: Finished difference. Result has 342 places, 344 transitions, 700 flow [2023-11-29 06:02:45,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=545, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=700, PETRI_PLACES=342, PETRI_TRANSITIONS=344} [2023-11-29 06:02:45,515 INFO L281 CegarLoopForPetriNet]: 519 programPoint places, -177 predicate places. [2023-11-29 06:02:45,516 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 344 transitions, 700 flow [2023-11-29 06:02:45,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:45,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:02:45,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:02:45,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:02:45,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err4ASSERT_VIOLATIONDATA_RACE (and 363 more)] === [2023-11-29 06:02:45,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:45,518 INFO L85 PathProgramCache]: Analyzing trace with hash -8565536, now seen corresponding path program 1 times [2023-11-29 06:02:45,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:45,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013981161] [2023-11-29 06:02:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:45,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:02:45,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:45,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013981161] [2023-11-29 06:02:45,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013981161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:02:45,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:02:45,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:02:45,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657679643] [2023-11-29 06:02:45,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:02:45,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:02:45,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:45,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:02:45,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:02:45,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 545 [2023-11-29 06:02:45,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 344 transitions, 700 flow. Second operand has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:45,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:02:45,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 545 [2023-11-29 06:02:45,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:31,371 INFO L124 PetriNetUnfolderBase]: 208632/300575 cut-off events. [2023-11-29 06:03:31,372 INFO L125 PetriNetUnfolderBase]: For 4369/4369 co-relation queries the response was YES. [2023-11-29 06:03:32,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587852 conditions, 300575 events. 208632/300575 cut-off events. For 4369/4369 co-relation queries the response was YES. Maximal size of possible extension queue 5066. Compared 2359340 event pairs, 204255 based on Foata normal form. 0/295920 useless extension candidates. Maximal degree in co-relation 587807. Up to 282902 conditions per place. [2023-11-29 06:03:33,568 INFO L140 encePairwiseOnDemand]: 542/545 looper letters, 73 selfloop transitions, 2 changer transitions 0/343 dead transitions. [2023-11-29 06:03:33,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 343 transitions, 848 flow [2023-11-29 06:03:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:03:33,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:03:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 967 transitions. [2023-11-29 06:03:33,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914373088685015 [2023-11-29 06:03:33,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 967 transitions. [2023-11-29 06:03:33,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 967 transitions. [2023-11-29 06:03:33,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:33,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 967 transitions. [2023-11-29 06:03:33,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:33,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:33,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:33,581 INFO L175 Difference]: Start difference. First operand has 342 places, 344 transitions, 700 flow. Second operand 3 states and 967 transitions. [2023-11-29 06:03:33,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 343 transitions, 848 flow [2023-11-29 06:03:33,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 343 transitions, 844 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:03:33,587 INFO L231 Difference]: Finished difference. Result has 341 places, 343 transitions, 698 flow [2023-11-29 06:03:33,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=545, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=698, PETRI_PLACES=341, PETRI_TRANSITIONS=343} [2023-11-29 06:03:33,588 INFO L281 CegarLoopForPetriNet]: 519 programPoint places, -178 predicate places. [2023-11-29 06:03:33,589 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 343 transitions, 698 flow [2023-11-29 06:03:33,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:33,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:33,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:33,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:03:33,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err4ASSERT_VIOLATIONDATA_RACE (and 363 more)] === [2023-11-29 06:03:33,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1151439897, now seen corresponding path program 1 times [2023-11-29 06:03:33,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:33,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700102903] [2023-11-29 06:03:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:33,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:33,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:33,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700102903] [2023-11-29 06:03:33,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700102903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:33,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:33,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:03:33,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740271516] [2023-11-29 06:03:33,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:33,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:03:33,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:33,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:03:33,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:03:33,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 545 [2023-11-29 06:03:33,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 343 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:33,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:33,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 545 [2023-11-29 06:03:33,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:04:19,704 INFO L124 PetriNetUnfolderBase]: 208632/300574 cut-off events. [2023-11-29 06:04:19,704 INFO L125 PetriNetUnfolderBase]: For 4369/4369 co-relation queries the response was YES. [2023-11-29 06:04:20,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587851 conditions, 300574 events. 208632/300574 cut-off events. For 4369/4369 co-relation queries the response was YES. Maximal size of possible extension queue 5066. Compared 2359399 event pairs, 204255 based on Foata normal form. 0/295920 useless extension candidates. Maximal degree in co-relation 587799. Up to 282902 conditions per place. [2023-11-29 06:04:21,852 INFO L140 encePairwiseOnDemand]: 542/545 looper letters, 73 selfloop transitions, 2 changer transitions 0/342 dead transitions. [2023-11-29 06:04:21,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 342 transitions, 846 flow [2023-11-29 06:04:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:04:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:04:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 967 transitions. [2023-11-29 06:04:21,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914373088685015 [2023-11-29 06:04:21,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 967 transitions. [2023-11-29 06:04:21,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 967 transitions. [2023-11-29 06:04:21,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:04:21,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 967 transitions. [2023-11-29 06:04:21,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:21,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:21,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:21,865 INFO L175 Difference]: Start difference. First operand has 341 places, 343 transitions, 698 flow. Second operand 3 states and 967 transitions. [2023-11-29 06:04:21,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 342 transitions, 846 flow [2023-11-29 06:04:21,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 342 transitions, 842 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:04:21,872 INFO L231 Difference]: Finished difference. Result has 340 places, 342 transitions, 696 flow [2023-11-29 06:04:21,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=545, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=696, PETRI_PLACES=340, PETRI_TRANSITIONS=342} [2023-11-29 06:04:21,873 INFO L281 CegarLoopForPetriNet]: 519 programPoint places, -179 predicate places. [2023-11-29 06:04:21,874 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 342 transitions, 696 flow [2023-11-29 06:04:21,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:21,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:21,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:21,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:04:21,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err4ASSERT_VIOLATIONDATA_RACE (and 363 more)] === [2023-11-29 06:04:21,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:21,875 INFO L85 PathProgramCache]: Analyzing trace with hash 164034776, now seen corresponding path program 1 times [2023-11-29 06:04:21,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:21,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501396641] [2023-11-29 06:04:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:21,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:04:21,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:21,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501396641] [2023-11-29 06:04:21,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501396641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:21,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:21,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:04:21,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527882432] [2023-11-29 06:04:21,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:21,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:04:21,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:21,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:04:21,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:04:21,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 545 [2023-11-29 06:04:21,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 342 transitions, 696 flow. Second operand has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:21,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:04:21,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 545 [2023-11-29 06:04:21,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand