./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB --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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:56:45,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:56:45,637 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-28 02:56:45,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:56:45,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:56:45,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:56:45,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:56:45,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:56:45,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:56:45,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:56:45,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:56:45,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:56:45,686 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:56:45,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:56:45,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:56:45,686 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:56:45,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:56:45,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:56:45,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:56:45,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:56:45,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:56:45,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:56:45,687 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-28 02:56:45,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:56:45,687 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:56:45,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:56:45,688 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:56:45,689 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:56:45,690 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:56:45,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:56:45,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:56:45,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:45,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:56:45,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:56:45,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:56:45,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:45,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:56:45,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:56:45,691 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:56:45,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:56:45,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:56:45,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:56:45,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:56:45,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:56:45,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:56:45,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:56:45,692 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB 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 -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2024-11-28 02:56:45,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:56:46,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:56:46,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:56:46,011 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:56:46,013 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:56:46,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-11-28 02:56:48,893 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/data/db26f557f/cb836cabc5b14daf85779e4dd2922d18/FLAG5a2e1429a [2024-11-28 02:56:49,201 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:56:49,202 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-11-28 02:56:49,227 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/data/db26f557f/cb836cabc5b14daf85779e4dd2922d18/FLAG5a2e1429a [2024-11-28 02:56:49,249 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/data/db26f557f/cb836cabc5b14daf85779e4dd2922d18 [2024-11-28 02:56:49,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:56:49,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:56:49,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:56:49,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:56:49,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:56:49,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ebb13b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49, skipping insertion in model container [2024-11-28 02:56:49,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,312 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:56:49,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:56:49,620 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:56:49,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:56:49,704 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:56:49,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49 WrapperNode [2024-11-28 02:56:49,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:56:49,706 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:56:49,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:56:49,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:56:49,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,750 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 71 [2024-11-28 02:56:49,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:56:49,751 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:56:49,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:56:49,751 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:56:49,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,765 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:56:49,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:56:49,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:56:49,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:56:49,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (1/1) ... [2024-11-28 02:56:49,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:49,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:49,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:56:49,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2134bd2f-b50e-4709-ad20-592b1e4ef76d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:56:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 02:56:49,838 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 02:56:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:56:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-28 02:56:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:56:49,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:56:49,840 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:56:49,969 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:56:49,971 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:56:50,171 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:56:50,171 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:56:50,269 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:56:50,269 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:56:50,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:50 BoogieIcfgContainer [2024-11-28 02:56:50,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:56:50,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:56:50,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:56:50,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:56:50,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:49" (1/3) ... [2024-11-28 02:56:50,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec7fbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:50, skipping insertion in model container [2024-11-28 02:56:50,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:49" (2/3) ... [2024-11-28 02:56:50,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec7fbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:50, skipping insertion in model container [2024-11-28 02:56:50,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:50" (3/3) ... [2024-11-28 02:56:50,279 INFO L128 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2024-11-28 02:56:50,297 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:56:50,299 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 29_conditionals_vs.i that has 2 procedures, 52 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2024-11-28 02:56:50,299 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:56:50,344 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:56:50,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 58 transitions, 120 flow [2024-11-28 02:56:50,426 INFO L124 PetriNetUnfolderBase]: 7/66 cut-off events. [2024-11-28 02:56:50,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:56:50,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 66 events. 7/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2024-11-28 02:56:50,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 58 transitions, 120 flow [2024-11-28 02:56:50,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 58 transitions, 120 flow [2024-11-28 02:56:50,445 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:56:50,455 INFO L333 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, 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;@19af62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:56:50,456 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-28 02:56:50,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:56:50,468 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-11-28 02:56:50,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:56:50,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:50,469 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:50,469 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-28 02:56:50,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:50,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1854116887, now seen corresponding path program 1 times [2024-11-28 02:56:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:50,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368229624] [2024-11-28 02:56:50,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:50,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:50,597 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:56:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:50,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:56:50,639 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:56:50,640 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-28 02:56:50,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-11-28 02:56:50,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-11-28 02:56:50,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-11-28 02:56:50,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-11-28 02:56:50,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-11-28 02:56:50,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-11-28 02:56:50,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-11-28 02:56:50,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-11-28 02:56:50,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:56:50,648 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:56:50,653 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:56:50,653 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:56:50,704 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:56:50,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 95 transitions, 200 flow [2024-11-28 02:56:50,745 INFO L124 PetriNetUnfolderBase]: 13/113 cut-off events. [2024-11-28 02:56:50,745 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:56:50,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 113 events. 13/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 212 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 82. Up to 6 conditions per place. [2024-11-28 02:56:50,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 95 transitions, 200 flow [2024-11-28 02:56:50,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 95 transitions, 200 flow [2024-11-28 02:56:50,750 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:56:50,751 INFO L333 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, 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;@19af62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:56:50,751 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-28 02:56:50,770 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:56:50,770 INFO L124 PetriNetUnfolderBase]: 3/57 cut-off events. [2024-11-28 02:56:50,770 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:56:50,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:50,770 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:50,771 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-28 02:56:50,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:50,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1589732613, now seen corresponding path program 1 times [2024-11-28 02:56:50,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:50,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998955178] [2024-11-28 02:56:50,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:50,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:50,798 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:56:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:50,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:56:50,817 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:56:50,817 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-28 02:56:50,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-11-28 02:56:50,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-11-28 02:56:50,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-11-28 02:56:50,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-11-28 02:56:50,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-11-28 02:56:50,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-11-28 02:56:50,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-11-28 02:56:50,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-11-28 02:56:50,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-11-28 02:56:50,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-11-28 02:56:50,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-11-28 02:56:50,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-11-28 02:56:50,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:56:50,819 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:56:50,820 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:56:50,820 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:56:50,859 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:56:50,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 282 flow [2024-11-28 02:56:50,941 INFO L124 PetriNetUnfolderBase]: 19/160 cut-off events. [2024-11-28 02:56:50,941 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 02:56:50,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 160 events. 19/160 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 420 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2024-11-28 02:56:50,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 132 transitions, 282 flow [2024-11-28 02:56:50,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 132 transitions, 282 flow [2024-11-28 02:56:50,952 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:56:50,952 INFO L333 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, 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;@19af62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:56:50,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-28 02:56:50,968 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:56:50,969 INFO L124 PetriNetUnfolderBase]: 3/59 cut-off events. [2024-11-28 02:56:50,969 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:56:50,969 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:50,969 INFO L206 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] [2024-11-28 02:56:50,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-28 02:56:50,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1510109741, now seen corresponding path program 1 times [2024-11-28 02:56:50,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:50,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472870392] [2024-11-28 02:56:50,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:50,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:51,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:51,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472870392] [2024-11-28 02:56:51,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472870392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:51,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:51,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:56:51,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088982722] [2024-11-28 02:56:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:51,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:56:51,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:51,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:56:51,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:56:51,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 132 [2024-11-28 02:56:51,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 132 transitions, 282 flow. Second operand has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2024-11-28 02:56:51,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:51,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 132 [2024-11-28 02:56:51,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:51,233 INFO L124 PetriNetUnfolderBase]: 81/506 cut-off events. [2024-11-28 02:56:51,233 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-28 02:56:51,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 506 events. 81/506 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2628 event pairs, 42 based on Foata normal form. 104/553 useless extension candidates. Maximal degree in co-relation 184. Up to 82 conditions per place. [2024-11-28 02:56:51,240 INFO L140 encePairwiseOnDemand]: 112/132 looper letters, 9 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2024-11-28 02:56:51,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 242 flow [2024-11-28 02:56:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:56:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:56:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 229 transitions. [2024-11-28 02:56:51,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8674242424242424 [2024-11-28 02:56:51,258 INFO L175 Difference]: Start difference. First operand has 123 places, 132 transitions, 282 flow. Second operand 2 states and 229 transitions. [2024-11-28 02:56:51,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 242 flow [2024-11-28 02:56:51,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 240 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 02:56:51,274 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 222 flow [2024-11-28 02:56:51,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-11-28 02:56:51,280 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, -21 predicate places. [2024-11-28 02:56:51,280 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 222 flow [2024-11-28 02:56:51,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2024-11-28 02:56:51,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:51,280 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:51,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:56:51,281 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-28 02:56:51,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:51,281 INFO L85 PathProgramCache]: Analyzing trace with hash -545652932, now seen corresponding path program 1 times [2024-11-28 02:56:51,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:51,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540169413] [2024-11-28 02:56:51,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:51,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:51,302 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:56:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:51,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:56:51,326 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:56:51,327 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-28 02:56:51,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-11-28 02:56:51,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-11-28 02:56:51,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-11-28 02:56:51,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-11-28 02:56:51,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-11-28 02:56:51,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-11-28 02:56:51,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-11-28 02:56:51,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-11-28 02:56:51,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-11-28 02:56:51,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-11-28 02:56:51,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-11-28 02:56:51,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-11-28 02:56:51,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-11-28 02:56:51,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-11-28 02:56:51,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-11-28 02:56:51,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-11-28 02:56:51,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:56:51,331 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:56:51,332 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:56:51,333 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 02:56:51,407 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:56:51,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 169 transitions, 366 flow [2024-11-28 02:56:51,458 INFO L124 PetriNetUnfolderBase]: 25/207 cut-off events. [2024-11-28 02:56:51,459 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 02:56:51,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 207 events. 25/207 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 608 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 168. Up to 10 conditions per place. [2024-11-28 02:56:51,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 169 transitions, 366 flow [2024-11-28 02:56:51,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 169 transitions, 366 flow [2024-11-28 02:56:51,468 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:56:51,469 INFO L333 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, 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;@19af62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:56:51,469 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-28 02:56:51,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:56:51,483 INFO L124 PetriNetUnfolderBase]: 3/62 cut-off events. [2024-11-28 02:56:51,483 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:56:51,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:51,484 INFO L206 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] [2024-11-28 02:56:51,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-28 02:56:51,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1551817802, now seen corresponding path program 1 times [2024-11-28 02:56:51,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:51,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512417119] [2024-11-28 02:56:51,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:51,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:51,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512417119] [2024-11-28 02:56:51,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512417119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:51,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:51,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:56:51,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259785743] [2024-11-28 02:56:51,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:51,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:56:51,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:51,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:56:51,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:56:51,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 169 [2024-11-28 02:56:51,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 169 transitions, 366 flow. Second operand has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 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) [2024-11-28 02:56:51,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:51,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 169 [2024-11-28 02:56:51,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:51,964 INFO L124 PetriNetUnfolderBase]: 324/1604 cut-off events. [2024-11-28 02:56:51,964 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-11-28 02:56:51,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1604 events. 324/1604 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 11934 event pairs, 204 based on Foata normal form. 392/1819 useless extension candidates. Maximal degree in co-relation 639. Up to 325 conditions per place. [2024-11-28 02:56:51,987 INFO L140 encePairwiseOnDemand]: 143/169 looper letters, 12 selfloop transitions, 0 changer transitions 0/132 dead transitions. [2024-11-28 02:56:51,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 132 transitions, 316 flow [2024-11-28 02:56:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:56:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:56:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 292 transitions. [2024-11-28 02:56:51,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.863905325443787 [2024-11-28 02:56:51,990 INFO L175 Difference]: Start difference. First operand has 157 places, 169 transitions, 366 flow. Second operand 2 states and 292 transitions. [2024-11-28 02:56:51,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 132 transitions, 316 flow [2024-11-28 02:56:51,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 132 transitions, 310 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 02:56:52,002 INFO L231 Difference]: Finished difference. Result has 130 places, 132 transitions, 286 flow [2024-11-28 02:56:52,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=286, PETRI_PLACES=130, PETRI_TRANSITIONS=132} [2024-11-28 02:56:52,004 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, -27 predicate places. [2024-11-28 02:56:52,004 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 132 transitions, 286 flow [2024-11-28 02:56:52,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 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) [2024-11-28 02:56:52,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:52,005 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:52,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:56:52,005 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-28 02:56:52,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1186158948, now seen corresponding path program 1 times [2024-11-28 02:56:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014925165] [2024-11-28 02:56:52,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:52,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:52,049 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:56:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:52,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:56:52,087 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:56:52,087 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-28 02:56:52,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-11-28 02:56:52,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-11-28 02:56:52,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-11-28 02:56:52,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-11-28 02:56:52,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-11-28 02:56:52,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-11-28 02:56:52,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-11-28 02:56:52,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-11-28 02:56:52,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-11-28 02:56:52,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-11-28 02:56:52,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-11-28 02:56:52,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-11-28 02:56:52,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-11-28 02:56:52,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-11-28 02:56:52,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-11-28 02:56:52,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-11-28 02:56:52,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-11-28 02:56:52,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-11-28 02:56:52,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-11-28 02:56:52,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-11-28 02:56:52,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:56:52,089 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:56:52,092 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:56:52,092 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-28 02:56:52,161 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:56:52,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 206 transitions, 452 flow [2024-11-28 02:56:52,217 INFO L124 PetriNetUnfolderBase]: 31/254 cut-off events. [2024-11-28 02:56:52,217 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 02:56:52,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 254 events. 31/254 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 811 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 220. Up to 12 conditions per place. [2024-11-28 02:56:52,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 206 transitions, 452 flow [2024-11-28 02:56:52,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 206 transitions, 452 flow [2024-11-28 02:56:52,225 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:56:52,227 INFO L333 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, 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;@19af62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:56:52,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-28 02:56:52,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:56:52,235 INFO L124 PetriNetUnfolderBase]: 3/59 cut-off events. [2024-11-28 02:56:52,235 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:56:52,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:52,236 INFO L206 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] [2024-11-28 02:56:52,236 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 02:56:52,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:52,236 INFO L85 PathProgramCache]: Analyzing trace with hash 580387580, now seen corresponding path program 1 times [2024-11-28 02:56:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:52,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970221581] [2024-11-28 02:56:52,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:52,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:52,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970221581] [2024-11-28 02:56:52,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970221581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:52,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:52,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:56:52,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748049780] [2024-11-28 02:56:52,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:52,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:56:52,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:52,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:56:52,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:56:52,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 206 [2024-11-28 02:56:52,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 206 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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) [2024-11-28 02:56:52,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:52,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 206 [2024-11-28 02:56:52,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:53,379 INFO L124 PetriNetUnfolderBase]: 1215/5060 cut-off events. [2024-11-28 02:56:53,379 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2024-11-28 02:56:53,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 5060 events. 1215/5060 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 48238 event pairs, 852 based on Foata normal form. 1418/5941 useless extension candidates. Maximal degree in co-relation 2142. Up to 1216 conditions per place. [2024-11-28 02:56:53,454 INFO L140 encePairwiseOnDemand]: 174/206 looper letters, 15 selfloop transitions, 0 changer transitions 0/161 dead transitions. [2024-11-28 02:56:53,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 161 transitions, 392 flow [2024-11-28 02:56:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:56:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:56:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 355 transitions. [2024-11-28 02:56:53,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8616504854368932 [2024-11-28 02:56:53,460 INFO L175 Difference]: Start difference. First operand has 191 places, 206 transitions, 452 flow. Second operand 2 states and 355 transitions. [2024-11-28 02:56:53,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 161 transitions, 392 flow [2024-11-28 02:56:53,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 161 transitions, 380 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-28 02:56:53,472 INFO L231 Difference]: Finished difference. Result has 158 places, 161 transitions, 350 flow [2024-11-28 02:56:53,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=350, PETRI_PLACES=158, PETRI_TRANSITIONS=161} [2024-11-28 02:56:53,473 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, -33 predicate places. [2024-11-28 02:56:53,473 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 161 transitions, 350 flow [2024-11-28 02:56:53,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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) [2024-11-28 02:56:53,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:53,476 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:53,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:56:53,477 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 02:56:53,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:53,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1899708667, now seen corresponding path program 1 times [2024-11-28 02:56:53,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:53,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915985643] [2024-11-28 02:56:53,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:53,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:53,505 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:56:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:53,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:56:53,535 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:56:53,535 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-28 02:56:53,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2024-11-28 02:56:53,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2024-11-28 02:56:53,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2024-11-28 02:56:53,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2024-11-28 02:56:53,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2024-11-28 02:56:53,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2024-11-28 02:56:53,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2024-11-28 02:56:53,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2024-11-28 02:56:53,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2024-11-28 02:56:53,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2024-11-28 02:56:53,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2024-11-28 02:56:53,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2024-11-28 02:56:53,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2024-11-28 02:56:53,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:56:53,539 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:56:53,540 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:56:53,540 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-28 02:56:53,599 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:56:53,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 243 transitions, 540 flow [2024-11-28 02:56:53,654 INFO L124 PetriNetUnfolderBase]: 37/301 cut-off events. [2024-11-28 02:56:53,654 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-28 02:56:53,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 301 events. 37/301 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1002 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 273. Up to 14 conditions per place. [2024-11-28 02:56:53,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 243 transitions, 540 flow [2024-11-28 02:56:53,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 243 transitions, 540 flow [2024-11-28 02:56:53,663 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:56:53,664 INFO L333 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, 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;@19af62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:56:53,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-28 02:56:53,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:56:53,674 INFO L124 PetriNetUnfolderBase]: 3/59 cut-off events. [2024-11-28 02:56:53,674 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:56:53,674 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:53,674 INFO L206 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] [2024-11-28 02:56:53,674 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-28 02:56:53,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash 73760619, now seen corresponding path program 1 times [2024-11-28 02:56:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:53,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320877611] [2024-11-28 02:56:53,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:53,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:53,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320877611] [2024-11-28 02:56:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320877611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:53,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:53,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:56:53,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731708079] [2024-11-28 02:56:53,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:53,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:56:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:53,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:56:53,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:56:53,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 243 [2024-11-28 02:56:53,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 243 transitions, 540 flow. Second operand has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 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) [2024-11-28 02:56:53,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:53,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 243 [2024-11-28 02:56:53,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:57,062 INFO L124 PetriNetUnfolderBase]: 4374/15914 cut-off events. [2024-11-28 02:56:57,062 INFO L125 PetriNetUnfolderBase]: For 10297/10297 co-relation queries the response was YES. [2024-11-28 02:56:57,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22665 conditions, 15914 events. 4374/15914 cut-off events. For 10297/10297 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 181194 event pairs, 3282 based on Foata normal form. 4982/19279 useless extension candidates. Maximal degree in co-relation 7056. Up to 4375 conditions per place. [2024-11-28 02:56:57,278 INFO L140 encePairwiseOnDemand]: 205/243 looper letters, 18 selfloop transitions, 0 changer transitions 0/190 dead transitions. [2024-11-28 02:56:57,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 190 transitions, 470 flow [2024-11-28 02:56:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:56:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:56:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 418 transitions. [2024-11-28 02:56:57,280 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8600823045267489 [2024-11-28 02:56:57,280 INFO L175 Difference]: Start difference. First operand has 225 places, 243 transitions, 540 flow. Second operand 2 states and 418 transitions. [2024-11-28 02:56:57,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 190 transitions, 470 flow [2024-11-28 02:56:57,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 190 transitions, 450 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-28 02:56:57,294 INFO L231 Difference]: Finished difference. Result has 186 places, 190 transitions, 414 flow [2024-11-28 02:56:57,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=186, PETRI_TRANSITIONS=190} [2024-11-28 02:56:57,295 INFO L279 CegarLoopForPetriNet]: 225 programPoint places, -39 predicate places. [2024-11-28 02:56:57,295 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 190 transitions, 414 flow [2024-11-28 02:56:57,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 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) [2024-11-28 02:56:57,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:57,296 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:57,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:56:57,296 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-28 02:56:57,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:57,297 INFO L85 PathProgramCache]: Analyzing trace with hash 323603543, now seen corresponding path program 1 times [2024-11-28 02:56:57,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:57,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020635663] [2024-11-28 02:56:57,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:57,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:57,313 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:56:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:56:57,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:56:57,331 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:56:57,331 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-28 02:56:57,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-11-28 02:56:57,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-11-28 02:56:57,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-11-28 02:56:57,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-11-28 02:56:57,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-11-28 02:56:57,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-11-28 02:56:57,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-11-28 02:56:57,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-11-28 02:56:57,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-11-28 02:56:57,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2024-11-28 02:56:57,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-11-28 02:56:57,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-11-28 02:56:57,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-11-28 02:56:57,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-11-28 02:56:57,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-11-28 02:56:57,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-11-28 02:56:57,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-11-28 02:56:57,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-11-28 02:56:57,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-11-28 02:56:57,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-11-28 02:56:57,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-11-28 02:56:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-11-28 02:56:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-11-28 02:56:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-11-28 02:56:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-11-28 02:56:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-11-28 02:56:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-11-28 02:56:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-11-28 02:56:57,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:56:57,335 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:56:57,335 WARN L246 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:56:57,335 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-11-28 02:56:57,390 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:56:57,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 280 transitions, 630 flow [2024-11-28 02:56:57,441 INFO L124 PetriNetUnfolderBase]: 43/348 cut-off events. [2024-11-28 02:56:57,441 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-28 02:56:57,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 348 events. 43/348 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1205 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2024-11-28 02:56:57,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 280 transitions, 630 flow [2024-11-28 02:56:57,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 280 transitions, 630 flow [2024-11-28 02:56:57,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:56:57,452 INFO L333 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, 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;@19af62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:56:57,452 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-11-28 02:56:57,455 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:56:57,455 INFO L124 PetriNetUnfolderBase]: 3/59 cut-off events. [2024-11-28 02:56:57,455 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:56:57,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:57,456 INFO L206 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] [2024-11-28 02:56:57,456 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-11-28 02:56:57,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:57,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1727914827, now seen corresponding path program 1 times [2024-11-28 02:56:57,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:57,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969461374] [2024-11-28 02:56:57,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:57,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:57,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:57,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969461374] [2024-11-28 02:56:57,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969461374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:57,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:57,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:56:57,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135874329] [2024-11-28 02:56:57,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:57,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:56:57,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:57,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:56:57,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:56:57,476 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 280 [2024-11-28 02:56:57,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 280 transitions, 630 flow. Second operand has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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) [2024-11-28 02:56:57,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:57,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 280 [2024-11-28 02:56:57,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:05,832 INFO L124 PetriNetUnfolderBase]: 15309/49934 cut-off events. [2024-11-28 02:57:05,832 INFO L125 PetriNetUnfolderBase]: For 42373/42373 co-relation queries the response was YES. [2024-11-28 02:57:06,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73453 conditions, 49934 events. 15309/49934 cut-off events. For 42373/42373 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 653727 event pairs, 12030 based on Foata normal form. 17132/62209 useless extension candidates. Maximal degree in co-relation 23013. Up to 15310 conditions per place. [2024-11-28 02:57:06,790 INFO L140 encePairwiseOnDemand]: 236/280 looper letters, 21 selfloop transitions, 0 changer transitions 0/219 dead transitions. [2024-11-28 02:57:06,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 219 transitions, 550 flow [2024-11-28 02:57:06,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:57:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:57:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 481 transitions. [2024-11-28 02:57:06,792 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8589285714285714 [2024-11-28 02:57:06,792 INFO L175 Difference]: Start difference. First operand has 259 places, 280 transitions, 630 flow. Second operand 2 states and 481 transitions. [2024-11-28 02:57:06,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 219 transitions, 550 flow [2024-11-28 02:57:06,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 219 transitions, 520 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-28 02:57:06,834 INFO L231 Difference]: Finished difference. Result has 214 places, 219 transitions, 478 flow [2024-11-28 02:57:06,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=214, PETRI_TRANSITIONS=219} [2024-11-28 02:57:06,835 INFO L279 CegarLoopForPetriNet]: 259 programPoint places, -45 predicate places. [2024-11-28 02:57:06,835 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 219 transitions, 478 flow [2024-11-28 02:57:06,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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) [2024-11-28 02:57:06,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:06,836 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:06,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:57:06,836 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-11-28 02:57:06,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:06,837 INFO L85 PathProgramCache]: Analyzing trace with hash -443583886, now seen corresponding path program 1 times [2024-11-28 02:57:06,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:06,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641061900] [2024-11-28 02:57:06,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:06,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:57:06,858 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:57:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:57:06,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:57:06,881 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:57:06,881 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-11-28 02:57:06,881 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2024-11-28 02:57:06,881 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2024-11-28 02:57:06,881 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2024-11-28 02:57:06,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2024-11-28 02:57:06,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2024-11-28 02:57:06,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2024-11-28 02:57:06,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2024-11-28 02:57:06,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2024-11-28 02:57:06,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2024-11-28 02:57:06,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2024-11-28 02:57:06,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2024-11-28 02:57:06,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2024-11-28 02:57:06,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2024-11-28 02:57:06,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2024-11-28 02:57:06,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2024-11-28 02:57:06,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2024-11-28 02:57:06,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2024-11-28 02:57:06,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2024-11-28 02:57:06,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2024-11-28 02:57:06,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2024-11-28 02:57:06,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2024-11-28 02:57:06,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2024-11-28 02:57:06,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2024-11-28 02:57:06,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2024-11-28 02:57:06,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2024-11-28 02:57:06,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2024-11-28 02:57:06,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2024-11-28 02:57:06,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2024-11-28 02:57:06,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2024-11-28 02:57:06,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2024-11-28 02:57:06,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2024-11-28 02:57:06,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2024-11-28 02:57:06,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:57:06,885 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:57:06,886 WARN L246 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:57:06,886 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-11-28 02:57:06,966 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:57:06,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 317 transitions, 722 flow [2024-11-28 02:57:07,062 INFO L124 PetriNetUnfolderBase]: 49/395 cut-off events. [2024-11-28 02:57:07,062 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-28 02:57:07,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 395 events. 49/395 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1406 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 382. Up to 18 conditions per place. [2024-11-28 02:57:07,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 317 transitions, 722 flow [2024-11-28 02:57:07,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 317 transitions, 722 flow [2024-11-28 02:57:07,078 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:57:07,078 INFO L333 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, 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;@19af62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:57:07,078 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-28 02:57:07,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:57:07,084 INFO L124 PetriNetUnfolderBase]: 3/62 cut-off events. [2024-11-28 02:57:07,084 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:57:07,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:07,084 INFO L206 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] [2024-11-28 02:57:07,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2024-11-28 02:57:07,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash -770701956, now seen corresponding path program 1 times [2024-11-28 02:57:07,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:07,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152572255] [2024-11-28 02:57:07,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:07,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:07,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:07,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152572255] [2024-11-28 02:57:07,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152572255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:07,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:07,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:57:07,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454901558] [2024-11-28 02:57:07,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:07,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:57:07,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:07,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:57:07,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:57:07,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 317 [2024-11-28 02:57:07,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 317 transitions, 722 flow. Second operand has 2 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 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) [2024-11-28 02:57:07,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:07,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 317 [2024-11-28 02:57:07,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand