./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b 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_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP --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 e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:59,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:59,529 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:17:59,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:59,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:59,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:59,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:59,579 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:59,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:59,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:59,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:59,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:59,586 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:59,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:59,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:17:59,593 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:59,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:59,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:59,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:59,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:17:59,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:59,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:17:59,597 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:17:59,597 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:17:59,598 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:59,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:17:59,599 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:59,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:59,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:59,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:59,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:59,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:59,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:59,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:17:59,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:59,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:59,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:59,605 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:17:59,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:59,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:59,606 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:59,607 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_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b [2023-11-06 22:17:59,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:18:00,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:18:00,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:18:00,036 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:18:00,037 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:18:00,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-11-06 22:18:03,205 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:03,569 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:03,574 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-11-06 22:18:03,600 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/data/063c9a784/48422fd3ada9416ea2dc4174d0dcbe66/FLAG1109d0c74 [2023-11-06 22:18:03,615 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/data/063c9a784/48422fd3ada9416ea2dc4174d0dcbe66 [2023-11-06 22:18:03,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:03,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:03,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:03,622 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:03,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:03,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:03" (1/1) ... [2023-11-06 22:18:03,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c5a278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:03, skipping insertion in model container [2023-11-06 22:18:03,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:03" (1/1) ... [2023-11-06 22:18:03,691 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:04,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:04,103 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:04,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:04,241 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:04,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04 WrapperNode [2023-11-06 22:18:04,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:04,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:04,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:04,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:04,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,350 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 197 [2023-11-06 22:18:04,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:04,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:04,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:04,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:04,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,423 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:04,424 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:04,424 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:04,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:04,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (1/1) ... [2023-11-06 22:18:04,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:04,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:04,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:04,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b47df2-a67c-4154-9c3e-463c583a015a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:18:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:18:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:18:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:18:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:18:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:18:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:18:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:04,605 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:18:04,775 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:04,778 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:05,262 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:05,616 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:05,616 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:18:05,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:05 BoogieIcfgContainer [2023-11-06 22:18:05,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:05,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:18:05,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:18:05,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:18:05,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:18:03" (1/3) ... [2023-11-06 22:18:05,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a25784d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:05, skipping insertion in model container [2023-11-06 22:18:05,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:04" (2/3) ... [2023-11-06 22:18:05,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a25784d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:05, skipping insertion in model container [2023-11-06 22:18:05,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:05" (3/3) ... [2023-11-06 22:18:05,633 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-11-06 22:18:05,645 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:18:05,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:18:05,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-06 22:18:05,659 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:18:05,796 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:18:05,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 322 flow [2023-11-06 22:18:06,051 INFO L124 PetriNetUnfolderBase]: 11/170 cut-off events. [2023-11-06 22:18:06,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:06,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 170 events. 11/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 194 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 143. Up to 4 conditions per place. [2023-11-06 22:18:06,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 159 transitions, 322 flow [2023-11-06 22:18:06,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 159 transitions, 322 flow [2023-11-06 22:18:06,082 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:06,111 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 159 transitions, 322 flow [2023-11-06 22:18:06,117 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 159 transitions, 322 flow [2023-11-06 22:18:06,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 322 flow [2023-11-06 22:18:06,181 INFO L124 PetriNetUnfolderBase]: 11/170 cut-off events. [2023-11-06 22:18:06,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:06,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 170 events. 11/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 194 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 143. Up to 4 conditions per place. [2023-11-06 22:18:06,194 INFO L119 LiptonReduction]: Number of co-enabled transitions 3640 [2023-11-06 22:18:30,051 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 90 DAG size of output: 86 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:18:46,125 WARN L293 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 89 DAG size of output: 85 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:18:50,102 INFO L134 LiptonReduction]: Checked pairs total: 4860 [2023-11-06 22:18:50,102 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-11-06 22:18:50,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:50,125 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;@44883081, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:50,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-06 22:18:50,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:18:50,129 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-06 22:18:50,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:50,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:50,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:18:50,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-11-06 22:18:50,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash 841696079, now seen corresponding path program 1 times [2023-11-06 22:18:50,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:50,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490547070] [2023-11-06 22:18:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:50,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:50,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490547070] [2023-11-06 22:18:50,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490547070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:50,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:50,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:18:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130466235] [2023-11-06 22:18:50,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:50,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:18:50,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:50,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:18:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:18:50,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 345 [2023-11-06 22:18:50,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 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) [2023-11-06 22:18:50,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:50,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 345 [2023-11-06 22:18:50,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:50,626 INFO L124 PetriNetUnfolderBase]: 42/102 cut-off events. [2023-11-06 22:18:50,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:50,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 102 events. 42/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 194 event pairs, 33 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 190. Up to 98 conditions per place. [2023-11-06 22:18:50,629 INFO L140 encePairwiseOnDemand]: 325/345 looper letters, 23 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-06 22:18:50,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 102 flow [2023-11-06 22:18:50,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:18:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:18:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 315 transitions. [2023-11-06 22:18:50,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2023-11-06 22:18:50,655 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 315 transitions. [2023-11-06 22:18:50,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 315 transitions. [2023-11-06 22:18:50,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:50,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 315 transitions. [2023-11-06 22:18:50,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 157.5) internal successors, (315), 2 states have internal predecessors, (315), 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) [2023-11-06 22:18:50,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 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) [2023-11-06 22:18:50,671 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 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) [2023-11-06 22:18:50,673 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 96 flow. Second operand 2 states and 315 transitions. [2023-11-06 22:18:50,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 102 flow [2023-11-06 22:18:50,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:50,678 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 56 flow [2023-11-06 22:18:50,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-11-06 22:18:50,684 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -18 predicate places. [2023-11-06 22:18:50,684 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 56 flow [2023-11-06 22:18:50,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 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) [2023-11-06 22:18:50,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:50,685 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:18:50,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:18:50,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-11-06 22:18:50,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:50,686 INFO L85 PathProgramCache]: Analyzing trace with hash 322931277, now seen corresponding path program 1 times [2023-11-06 22:18:50,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:50,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034088135] [2023-11-06 22:18:50,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:50,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:50,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:50,750 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:50,750 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:18:50,752 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2023-11-06 22:18:50,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (37 of 39 remaining) [2023-11-06 22:18:50,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (36 of 39 remaining) [2023-11-06 22:18:50,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (35 of 39 remaining) [2023-11-06 22:18:50,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (34 of 39 remaining) [2023-11-06 22:18:50,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 39 remaining) [2023-11-06 22:18:50,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (32 of 39 remaining) [2023-11-06 22:18:50,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (31 of 39 remaining) [2023-11-06 22:18:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 39 remaining) [2023-11-06 22:18:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 39 remaining) [2023-11-06 22:18:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 39 remaining) [2023-11-06 22:18:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (27 of 39 remaining) [2023-11-06 22:18:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (26 of 39 remaining) [2023-11-06 22:18:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 39 remaining) [2023-11-06 22:18:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (24 of 39 remaining) [2023-11-06 22:18:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (23 of 39 remaining) [2023-11-06 22:18:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (22 of 39 remaining) [2023-11-06 22:18:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (21 of 39 remaining) [2023-11-06 22:18:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (20 of 39 remaining) [2023-11-06 22:18:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (19 of 39 remaining) [2023-11-06 22:18:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 39 remaining) [2023-11-06 22:18:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 39 remaining) [2023-11-06 22:18:50,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 39 remaining) [2023-11-06 22:18:50,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 39 remaining) [2023-11-06 22:18:50,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 39 remaining) [2023-11-06 22:18:50,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (13 of 39 remaining) [2023-11-06 22:18:50,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 39 remaining) [2023-11-06 22:18:50,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 39 remaining) [2023-11-06 22:18:50,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (10 of 39 remaining) [2023-11-06 22:18:50,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (9 of 39 remaining) [2023-11-06 22:18:50,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (8 of 39 remaining) [2023-11-06 22:18:50,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 39 remaining) [2023-11-06 22:18:50,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (6 of 39 remaining) [2023-11-06 22:18:50,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (5 of 39 remaining) [2023-11-06 22:18:50,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 39 remaining) [2023-11-06 22:18:50,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (3 of 39 remaining) [2023-11-06 22:18:50,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 39 remaining) [2023-11-06 22:18:50,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (1 of 39 remaining) [2023-11-06 22:18:50,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (0 of 39 remaining) [2023-11-06 22:18:50,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:18:50,766 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:18:50,769 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:18:50,770 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:18:50,852 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:18:50,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 290 transitions, 590 flow [2023-11-06 22:18:50,942 INFO L124 PetriNetUnfolderBase]: 21/314 cut-off events. [2023-11-06 22:18:50,942 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:18:50,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 314 events. 21/314 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 774 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 273. Up to 6 conditions per place. [2023-11-06 22:18:50,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 290 transitions, 590 flow [2023-11-06 22:18:50,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 290 transitions, 590 flow [2023-11-06 22:18:50,957 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:50,957 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 290 transitions, 590 flow [2023-11-06 22:18:50,958 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 290 transitions, 590 flow [2023-11-06 22:18:50,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 290 transitions, 590 flow [2023-11-06 22:18:51,035 INFO L124 PetriNetUnfolderBase]: 21/314 cut-off events. [2023-11-06 22:18:51,035 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:18:51,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 314 events. 21/314 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 774 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 273. Up to 6 conditions per place. [2023-11-06 22:18:51,102 INFO L119 LiptonReduction]: Number of co-enabled transitions 41340 [2023-11-06 22:18:59,173 INFO L134 LiptonReduction]: Checked pairs total: 203429 [2023-11-06 22:18:59,173 INFO L136 LiptonReduction]: Total number of compositions: 154 [2023-11-06 22:18:59,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:59,178 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;@44883081, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:59,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-11-06 22:18:59,181 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:18:59,182 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-06 22:18:59,182 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:18:59,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:59,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:59,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-11-06 22:18:59,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:59,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1143255538, now seen corresponding path program 1 times [2023-11-06 22:18:59,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:59,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416020220] [2023-11-06 22:18:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:59,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:59,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:59,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416020220] [2023-11-06 22:18:59,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416020220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:59,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:59,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:18:59,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787311519] [2023-11-06 22:18:59,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:59,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:18:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:18:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:18:59,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 444 [2023-11-06 22:18:59,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 175 transitions, 360 flow. Second operand has 2 states, 2 states have (on average 248.5) internal successors, (497), 2 states have internal predecessors, (497), 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) [2023-11-06 22:18:59,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:59,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 444 [2023-11-06 22:18:59,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:00,425 INFO L124 PetriNetUnfolderBase]: 1353/4134 cut-off events. [2023-11-06 22:19:00,426 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-06 22:19:00,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6389 conditions, 4134 events. 1353/4134 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 32335 event pairs, 1148 based on Foata normal form. 158/3915 useless extension candidates. Maximal degree in co-relation 4805. Up to 2190 conditions per place. [2023-11-06 22:19:00,466 INFO L140 encePairwiseOnDemand]: 415/444 looper letters, 45 selfloop transitions, 0 changer transitions 0/141 dead transitions. [2023-11-06 22:19:00,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 141 transitions, 382 flow [2023-11-06 22:19:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:19:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:19:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 566 transitions. [2023-11-06 22:19:00,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6373873873873874 [2023-11-06 22:19:00,470 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 566 transitions. [2023-11-06 22:19:00,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 566 transitions. [2023-11-06 22:19:00,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:00,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 566 transitions. [2023-11-06 22:19:00,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 283.0) internal successors, (566), 2 states have internal predecessors, (566), 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) [2023-11-06 22:19:00,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 444.0) internal successors, (1332), 3 states have internal predecessors, (1332), 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) [2023-11-06 22:19:00,482 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 444.0) internal successors, (1332), 3 states have internal predecessors, (1332), 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) [2023-11-06 22:19:00,482 INFO L175 Difference]: Start difference. First operand has 169 places, 175 transitions, 360 flow. Second operand 2 states and 566 transitions. [2023-11-06 22:19:00,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 141 transitions, 382 flow [2023-11-06 22:19:00,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 141 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:19:00,490 INFO L231 Difference]: Finished difference. Result has 142 places, 141 transitions, 292 flow [2023-11-06 22:19:00,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=444, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=292, PETRI_PLACES=142, PETRI_TRANSITIONS=141} [2023-11-06 22:19:00,491 INFO L281 CegarLoopForPetriNet]: 169 programPoint places, -27 predicate places. [2023-11-06 22:19:00,492 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 141 transitions, 292 flow [2023-11-06 22:19:00,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 248.5) internal successors, (497), 2 states have internal predecessors, (497), 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) [2023-11-06 22:19:00,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:00,493 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:19:00,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:19:00,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-11-06 22:19:00,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1729088377, now seen corresponding path program 1 times [2023-11-06 22:19:00,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:00,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174421303] [2023-11-06 22:19:00,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:00,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:19:00,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:19:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:19:00,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:19:00,589 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:19:00,590 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (57 of 58 remaining) [2023-11-06 22:19:00,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (56 of 58 remaining) [2023-11-06 22:19:00,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (55 of 58 remaining) [2023-11-06 22:19:00,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (54 of 58 remaining) [2023-11-06 22:19:00,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (53 of 58 remaining) [2023-11-06 22:19:00,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (52 of 58 remaining) [2023-11-06 22:19:00,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (51 of 58 remaining) [2023-11-06 22:19:00,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (50 of 58 remaining) [2023-11-06 22:19:00,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (49 of 58 remaining) [2023-11-06 22:19:00,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (48 of 58 remaining) [2023-11-06 22:19:00,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (47 of 58 remaining) [2023-11-06 22:19:00,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (46 of 58 remaining) [2023-11-06 22:19:00,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (45 of 58 remaining) [2023-11-06 22:19:00,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (44 of 58 remaining) [2023-11-06 22:19:00,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (43 of 58 remaining) [2023-11-06 22:19:00,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (42 of 58 remaining) [2023-11-06 22:19:00,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (41 of 58 remaining) [2023-11-06 22:19:00,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (40 of 58 remaining) [2023-11-06 22:19:00,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (39 of 58 remaining) [2023-11-06 22:19:00,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (38 of 58 remaining) [2023-11-06 22:19:00,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (37 of 58 remaining) [2023-11-06 22:19:00,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (36 of 58 remaining) [2023-11-06 22:19:00,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (35 of 58 remaining) [2023-11-06 22:19:00,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (34 of 58 remaining) [2023-11-06 22:19:00,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 58 remaining) [2023-11-06 22:19:00,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (32 of 58 remaining) [2023-11-06 22:19:00,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (31 of 58 remaining) [2023-11-06 22:19:00,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 58 remaining) [2023-11-06 22:19:00,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 58 remaining) [2023-11-06 22:19:00,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 58 remaining) [2023-11-06 22:19:00,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (27 of 58 remaining) [2023-11-06 22:19:00,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (26 of 58 remaining) [2023-11-06 22:19:00,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 58 remaining) [2023-11-06 22:19:00,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (24 of 58 remaining) [2023-11-06 22:19:00,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (23 of 58 remaining) [2023-11-06 22:19:00,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (22 of 58 remaining) [2023-11-06 22:19:00,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (21 of 58 remaining) [2023-11-06 22:19:00,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (20 of 58 remaining) [2023-11-06 22:19:00,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (19 of 58 remaining) [2023-11-06 22:19:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 58 remaining) [2023-11-06 22:19:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 58 remaining) [2023-11-06 22:19:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 58 remaining) [2023-11-06 22:19:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 58 remaining) [2023-11-06 22:19:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 58 remaining) [2023-11-06 22:19:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (13 of 58 remaining) [2023-11-06 22:19:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 58 remaining) [2023-11-06 22:19:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 58 remaining) [2023-11-06 22:19:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (10 of 58 remaining) [2023-11-06 22:19:00,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (9 of 58 remaining) [2023-11-06 22:19:00,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (8 of 58 remaining) [2023-11-06 22:19:00,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 58 remaining) [2023-11-06 22:19:00,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (6 of 58 remaining) [2023-11-06 22:19:00,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (5 of 58 remaining) [2023-11-06 22:19:00,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 58 remaining) [2023-11-06 22:19:00,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (3 of 58 remaining) [2023-11-06 22:19:00,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 58 remaining) [2023-11-06 22:19:00,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (1 of 58 remaining) [2023-11-06 22:19:00,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (0 of 58 remaining) [2023-11-06 22:19:00,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:19:00,618 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:19:00,619 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:19:00,619 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:19:00,813 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:19:00,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 421 transitions, 860 flow [2023-11-06 22:19:00,970 INFO L124 PetriNetUnfolderBase]: 31/458 cut-off events. [2023-11-06 22:19:00,970 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:19:00,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 458 events. 31/458 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1565 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 403. Up to 8 conditions per place. [2023-11-06 22:19:00,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 400 places, 421 transitions, 860 flow [2023-11-06 22:19:00,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 400 places, 421 transitions, 860 flow [2023-11-06 22:19:00,996 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:19:00,997 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 400 places, 421 transitions, 860 flow [2023-11-06 22:19:00,997 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 400 places, 421 transitions, 860 flow [2023-11-06 22:19:00,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 421 transitions, 860 flow [2023-11-06 22:19:01,236 INFO L124 PetriNetUnfolderBase]: 31/458 cut-off events. [2023-11-06 22:19:01,236 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:19:01,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 458 events. 31/458 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1565 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 403. Up to 8 conditions per place. [2023-11-06 22:19:01,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 113100 [2023-11-06 22:19:09,406 INFO L134 LiptonReduction]: Checked pairs total: 570537 [2023-11-06 22:19:09,406 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-11-06 22:19:09,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:19:09,410 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;@44883081, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:19:09,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2023-11-06 22:19:09,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:19:09,413 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-06 22:19:09,413 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:19:09,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:09,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:09,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 73 more)] === [2023-11-06 22:19:09,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1801676949, now seen corresponding path program 1 times [2023-11-06 22:19:09,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:09,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451851544] [2023-11-06 22:19:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:09,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:09,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:09,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451851544] [2023-11-06 22:19:09,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451851544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:09,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:09,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:19:09,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018388210] [2023-11-06 22:19:09,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:09,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:19:09,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:09,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:19:09,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:19:09,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 635 [2023-11-06 22:19:09,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 256 transitions, 530 flow. Second operand has 2 states, 2 states have (on average 358.5) internal successors, (717), 2 states have internal predecessors, (717), 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) [2023-11-06 22:19:09,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:09,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 635 [2023-11-06 22:19:09,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:26,007 INFO L124 PetriNetUnfolderBase]: 45193/96255 cut-off events. [2023-11-06 22:19:26,007 INFO L125 PetriNetUnfolderBase]: For 2374/2374 co-relation queries the response was YES. [2023-11-06 22:19:26,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159680 conditions, 96255 events. 45193/96255 cut-off events. For 2374/2374 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 1049120 event pairs, 38700 based on Foata normal form. 3232/91598 useless extension candidates. Maximal degree in co-relation 100857. Up to 61844 conditions per place. [2023-11-06 22:19:27,156 INFO L140 encePairwiseOnDemand]: 593/635 looper letters, 67 selfloop transitions, 0 changer transitions 0/207 dead transitions. [2023-11-06 22:19:27,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 207 transitions, 566 flow [2023-11-06 22:19:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:19:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:19:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 821 transitions. [2023-11-06 22:19:27,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464566929133858 [2023-11-06 22:19:27,162 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 821 transitions. [2023-11-06 22:19:27,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 821 transitions. [2023-11-06 22:19:27,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:27,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 821 transitions. [2023-11-06 22:19:27,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 410.5) internal successors, (821), 2 states have internal predecessors, (821), 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) [2023-11-06 22:19:27,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 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) [2023-11-06 22:19:27,173 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 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) [2023-11-06 22:19:27,174 INFO L175 Difference]: Start difference. First operand has 247 places, 256 transitions, 530 flow. Second operand 2 states and 821 transitions. [2023-11-06 22:19:27,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 207 transitions, 566 flow [2023-11-06 22:19:27,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 207 transitions, 564 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 22:19:27,191 INFO L231 Difference]: Finished difference. Result has 207 places, 207 transitions, 430 flow [2023-11-06 22:19:27,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=635, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=430, PETRI_PLACES=207, PETRI_TRANSITIONS=207} [2023-11-06 22:19:27,194 INFO L281 CegarLoopForPetriNet]: 247 programPoint places, -40 predicate places. [2023-11-06 22:19:27,194 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 207 transitions, 430 flow [2023-11-06 22:19:27,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 358.5) internal successors, (717), 2 states have internal predecessors, (717), 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) [2023-11-06 22:19:27,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:27,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:27,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:19:27,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 73 more)] === [2023-11-06 22:19:27,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:27,197 INFO L85 PathProgramCache]: Analyzing trace with hash -646604620, now seen corresponding path program 1 times [2023-11-06 22:19:27,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:27,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727751750] [2023-11-06 22:19:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:27,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:27,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:27,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727751750] [2023-11-06 22:19:27,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727751750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:27,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:27,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:19:27,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166472595] [2023-11-06 22:19:27,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:27,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:19:27,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:19:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:19:29,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 635 [2023-11-06 22:19:29,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 207 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 328.6666666666667) internal successors, (1972), 6 states have internal predecessors, (1972), 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) [2023-11-06 22:19:29,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:29,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 635 [2023-11-06 22:19:29,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand