./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/45_monabsex1_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_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/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_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/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_1d98c8fe-3436-463f-9e37-b44f86904781/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 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:34,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:34,208 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-28 02:07:34,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:34,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:34,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:34,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:34,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:34,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:34,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:34,260 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:34,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:34,260 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:34,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:07:34,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:07:34,262 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:34,263 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:34,263 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:34,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:34,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:34,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:34,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:34,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:34,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:34,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:34,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:34,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:34,265 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:07:34,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:07:34,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:07:34,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:07:34,265 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:34,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:34,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:34,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:34,266 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_1d98c8fe-3436-463f-9e37-b44f86904781/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 -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 [2024-11-28 02:07:34,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:34,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:34,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:34,597 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:34,597 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:34,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2024-11-28 02:07:37,586 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/data/71002d62a/ed65d5d182c748968f6b23d71ea355ff/FLAG31cc9b0ec [2024-11-28 02:07:37,883 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:37,884 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2024-11-28 02:07:37,900 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/data/71002d62a/ed65d5d182c748968f6b23d71ea355ff/FLAG31cc9b0ec [2024-11-28 02:07:38,163 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/data/71002d62a/ed65d5d182c748968f6b23d71ea355ff [2024-11-28 02:07:38,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:38,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:38,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:38,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:38,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:38,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9bb4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38, skipping insertion in model container [2024-11-28 02:07:38,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,225 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:38,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:38,591 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:38,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:38,666 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:38,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38 WrapperNode [2024-11-28 02:07:38,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:38,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:38,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:38,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:38,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,716 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2024-11-28 02:07:38,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:38,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:38,718 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:38,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:38,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,739 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:38,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:38,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:38,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:38,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (1/1) ... [2024-11-28 02:07:38,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:38,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:38,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:38,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d98c8fe-3436-463f-9e37-b44f86904781/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 02:07:38,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 02:07:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 02:07:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-28 02:07:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 02:07:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:38,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:38,839 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 02:07:38,989 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:07:38,991 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:07:39,118 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:07:39,118 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:07:39,156 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:07:39,156 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:07:39,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:39 BoogieIcfgContainer [2024-11-28 02:07:39,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:07:39,159 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:07:39,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:07:39,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:07:39,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:38" (1/3) ... [2024-11-28 02:07:39,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d74c0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:39, skipping insertion in model container [2024-11-28 02:07:39,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:38" (2/3) ... [2024-11-28 02:07:39,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d74c0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:39, skipping insertion in model container [2024-11-28 02:07:39,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:39" (3/3) ... [2024-11-28 02:07:39,166 INFO L128 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2024-11-28 02:07:39,182 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:07:39,184 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 45_monabsex1_vs.i that has 2 procedures, 40 locations, 1 initial locations, 1 loop locations, and 3 error locations. [2024-11-28 02:07:39,184 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:07:39,249 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:39,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 41 transitions, 86 flow [2024-11-28 02:07:39,342 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2024-11-28 02:07:39,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:39,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 27. Up to 4 conditions per place. [2024-11-28 02:07:39,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 41 transitions, 86 flow [2024-11-28 02:07:39,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 41 transitions, 86 flow [2024-11-28 02:07:39,360 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:39,372 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;@36c29fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:39,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 02:07:39,380 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:39,380 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-28 02:07:39,380 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:39,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:39,381 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:39,382 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 02:07:39,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash 587575102, now seen corresponding path program 1 times [2024-11-28 02:07:39,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:39,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414274248] [2024-11-28 02:07:39,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:39,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:39,568 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 02:07:39,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:39,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414274248] [2024-11-28 02:07:39,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414274248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:39,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:39,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710244671] [2024-11-28 02:07:39,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:39,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:39,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:39,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:39,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:39,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 41 [2024-11-28 02:07:39,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 02:07:39,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:39,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 41 [2024-11-28 02:07:39,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:39,713 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2024-11-28 02:07:39,713 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:07:39,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 0/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 4/40 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2024-11-28 02:07:39,714 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 6 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-28 02:07:39,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 86 flow [2024-11-28 02:07:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-28 02:07:39,733 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7642276422764228 [2024-11-28 02:07:39,735 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 86 flow. Second operand 3 states and 94 transitions. [2024-11-28 02:07:39,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 86 flow [2024-11-28 02:07:39,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:39,745 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 74 flow [2024-11-28 02:07:39,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-11-28 02:07:39,752 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2024-11-28 02:07:39,753 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 74 flow [2024-11-28 02:07:39,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 02:07:39,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:39,755 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:39,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:07:39,756 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 02:07:39,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:39,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1049743730, now seen corresponding path program 1 times [2024-11-28 02:07:39,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:39,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723660900] [2024-11-28 02:07:39,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:39,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:39,801 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:39,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:39,829 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:39,831 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-28 02:07:39,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2024-11-28 02:07:39,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2024-11-28 02:07:39,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2024-11-28 02:07:39,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2024-11-28 02:07:39,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2024-11-28 02:07:39,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:07:39,834 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:07:39,842 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:39,842 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:07:39,885 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:39,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 54 transitions, 118 flow [2024-11-28 02:07:39,917 INFO L124 PetriNetUnfolderBase]: 3/70 cut-off events. [2024-11-28 02:07:39,917 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:07:39,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 3/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2024-11-28 02:07:39,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 54 transitions, 118 flow [2024-11-28 02:07:39,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 118 flow [2024-11-28 02:07:39,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:39,921 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;@36c29fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:39,921 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-28 02:07:39,926 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:39,926 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-28 02:07:39,926 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:39,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:39,927 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:39,927 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 02:07:39,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:39,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1386600500, now seen corresponding path program 1 times [2024-11-28 02:07:39,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:39,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864175435] [2024-11-28 02:07:39,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:39,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:40,020 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 02:07:40,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:40,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864175435] [2024-11-28 02:07:40,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864175435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:40,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:40,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:40,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199456949] [2024-11-28 02:07:40,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:40,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:40,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:40,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:40,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:40,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 54 [2024-11-28 02:07:40,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 02:07:40,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:40,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 54 [2024-11-28 02:07:40,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:40,086 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2024-11-28 02:07:40,087 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-28 02:07:40,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 80 events. 6/80 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 141 event pairs, 6 based on Foata normal form. 13/91 useless extension candidates. Maximal degree in co-relation 31. Up to 22 conditions per place. [2024-11-28 02:07:40,088 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 9 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-11-28 02:07:40,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 120 flow [2024-11-28 02:07:40,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-28 02:07:40,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-11-28 02:07:40,090 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 118 flow. Second operand 3 states and 123 transitions. [2024-11-28 02:07:40,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 120 flow [2024-11-28 02:07:40,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:40,092 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 102 flow [2024-11-28 02:07:40,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-11-28 02:07:40,093 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2024-11-28 02:07:40,093 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 102 flow [2024-11-28 02:07:40,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 02:07:40,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:40,094 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:40,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:07:40,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 02:07:40,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash 931367645, now seen corresponding path program 1 times [2024-11-28 02:07:40,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:40,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918536017] [2024-11-28 02:07:40,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:40,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:40,113 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:40,134 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:40,134 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:40,135 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-28 02:07:40,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2024-11-28 02:07:40,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2024-11-28 02:07:40,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2024-11-28 02:07:40,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2024-11-28 02:07:40,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2024-11-28 02:07:40,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2024-11-28 02:07:40,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2024-11-28 02:07:40,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:07:40,136 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:07:40,136 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:40,136 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:07:40,163 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:40,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 67 transitions, 152 flow [2024-11-28 02:07:40,190 INFO L124 PetriNetUnfolderBase]: 4/91 cut-off events. [2024-11-28 02:07:40,191 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 02:07:40,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 4/91 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 182 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 74. Up to 8 conditions per place. [2024-11-28 02:07:40,193 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 67 transitions, 152 flow [2024-11-28 02:07:40,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 67 transitions, 152 flow [2024-11-28 02:07:40,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:40,196 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;@36c29fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:40,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-28 02:07:40,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:40,205 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-28 02:07:40,205 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:40,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:40,206 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:40,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-28 02:07:40,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:40,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1757910569, now seen corresponding path program 1 times [2024-11-28 02:07:40,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:40,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820408835] [2024-11-28 02:07:40,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:40,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:40,270 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 02:07:40,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:40,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820408835] [2024-11-28 02:07:40,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820408835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:40,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:40,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:40,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648060664] [2024-11-28 02:07:40,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:40,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:40,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:40,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:40,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:40,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 67 [2024-11-28 02:07:40,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 02:07:40,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:40,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 67 [2024-11-28 02:07:40,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:40,384 INFO L124 PetriNetUnfolderBase]: 42/219 cut-off events. [2024-11-28 02:07:40,384 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-28 02:07:40,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 219 events. 42/219 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 967 event pairs, 42 based on Foata normal form. 40/248 useless extension candidates. Maximal degree in co-relation 112. Up to 85 conditions per place. [2024-11-28 02:07:40,386 INFO L140 encePairwiseOnDemand]: 56/67 looper letters, 12 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-11-28 02:07:40,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 156 flow [2024-11-28 02:07:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-11-28 02:07:40,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7562189054726368 [2024-11-28 02:07:40,389 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 152 flow. Second operand 3 states and 152 transitions. [2024-11-28 02:07:40,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 156 flow [2024-11-28 02:07:40,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 55 transitions, 154 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:40,391 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 130 flow [2024-11-28 02:07:40,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-11-28 02:07:40,392 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2024-11-28 02:07:40,392 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 130 flow [2024-11-28 02:07:40,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 02:07:40,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:40,392 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 02:07:40,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:07:40,395 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-28 02:07:40,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:40,396 INFO L85 PathProgramCache]: Analyzing trace with hash -637959195, now seen corresponding path program 1 times [2024-11-28 02:07:40,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:40,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119814909] [2024-11-28 02:07:40,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:40,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:40,434 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:40,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:40,462 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:40,462 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-28 02:07:40,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-28 02:07:40,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-28 02:07:40,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-28 02:07:40,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-28 02:07:40,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-28 02:07:40,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-28 02:07:40,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-28 02:07:40,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-28 02:07:40,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-28 02:07:40,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:07:40,468 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:07:40,469 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:40,469 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 02:07:40,519 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:40,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 80 transitions, 188 flow [2024-11-28 02:07:40,557 INFO L124 PetriNetUnfolderBase]: 5/112 cut-off events. [2024-11-28 02:07:40,557 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 02:07:40,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 112 events. 5/112 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 255 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 99. Up to 10 conditions per place. [2024-11-28 02:07:40,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 80 transitions, 188 flow [2024-11-28 02:07:40,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 80 transitions, 188 flow [2024-11-28 02:07:40,563 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:40,564 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;@36c29fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:40,564 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-28 02:07:40,569 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:40,569 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-28 02:07:40,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:40,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:40,569 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:40,570 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-28 02:07:40,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:40,570 INFO L85 PathProgramCache]: Analyzing trace with hash -256023513, now seen corresponding path program 1 times [2024-11-28 02:07:40,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:40,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428252804] [2024-11-28 02:07:40,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:40,669 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 02:07:40,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428252804] [2024-11-28 02:07:40,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428252804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:40,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:40,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:40,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992353586] [2024-11-28 02:07:40,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:40,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:40,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:40,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:40,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:40,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 80 [2024-11-28 02:07:40,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 02:07:40,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:40,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 80 [2024-11-28 02:07:40,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:40,875 INFO L124 PetriNetUnfolderBase]: 204/680 cut-off events. [2024-11-28 02:07:40,876 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2024-11-28 02:07:40,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 680 events. 204/680 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4416 event pairs, 204 based on Foata normal form. 121/759 useless extension candidates. Maximal degree in co-relation 348. Up to 328 conditions per place. [2024-11-28 02:07:40,887 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 15 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-28 02:07:40,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 194 flow [2024-11-28 02:07:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-11-28 02:07:40,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7541666666666667 [2024-11-28 02:07:40,893 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 188 flow. Second operand 3 states and 181 transitions. [2024-11-28 02:07:40,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 194 flow [2024-11-28 02:07:40,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 66 transitions, 188 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:40,898 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 158 flow [2024-11-28 02:07:40,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-11-28 02:07:40,899 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -11 predicate places. [2024-11-28 02:07:40,899 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 158 flow [2024-11-28 02:07:40,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 02:07:40,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:40,901 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 02:07:40,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:07:40,902 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-28 02:07:40,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash 627908838, now seen corresponding path program 1 times [2024-11-28 02:07:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:40,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852288122] [2024-11-28 02:07:40,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:40,941 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:40,970 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:40,974 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:40,974 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-11-28 02:07:40,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-11-28 02:07:40,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-11-28 02:07:40,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-11-28 02:07:40,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-11-28 02:07:40,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-11-28 02:07:40,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-11-28 02:07:40,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-11-28 02:07:40,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-11-28 02:07:40,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-11-28 02:07:40,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-11-28 02:07:40,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-11-28 02:07:40,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:07:40,976 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:07:40,978 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:40,978 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-28 02:07:41,031 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:41,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 93 transitions, 226 flow [2024-11-28 02:07:41,059 INFO L124 PetriNetUnfolderBase]: 6/133 cut-off events. [2024-11-28 02:07:41,059 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 02:07:41,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 133 events. 6/133 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 330 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2024-11-28 02:07:41,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 93 transitions, 226 flow [2024-11-28 02:07:41,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 93 transitions, 226 flow [2024-11-28 02:07:41,064 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:41,064 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;@36c29fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:41,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-28 02:07:41,067 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:41,067 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-28 02:07:41,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:41,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:41,068 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:41,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-11-28 02:07:41,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1597294372, now seen corresponding path program 1 times [2024-11-28 02:07:41,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:41,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900912418] [2024-11-28 02:07:41,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:41,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:41,105 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 02:07:41,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:41,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900912418] [2024-11-28 02:07:41,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900912418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:41,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:41,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:41,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385376696] [2024-11-28 02:07:41,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:41,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:41,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:41,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:41,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:41,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 93 [2024-11-28 02:07:41,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 93 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 02:07:41,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:41,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 93 [2024-11-28 02:07:41,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:41,585 INFO L124 PetriNetUnfolderBase]: 852/2215 cut-off events. [2024-11-28 02:07:41,585 INFO L125 PetriNetUnfolderBase]: For 1829/1829 co-relation queries the response was YES. [2024-11-28 02:07:41,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4110 conditions, 2215 events. 852/2215 cut-off events. For 1829/1829 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17676 event pairs, 852 based on Foata normal form. 364/2440 useless extension candidates. Maximal degree in co-relation 1208. Up to 1219 conditions per place. [2024-11-28 02:07:41,608 INFO L140 encePairwiseOnDemand]: 78/93 looper letters, 18 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-11-28 02:07:41,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 234 flow [2024-11-28 02:07:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2024-11-28 02:07:41,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7526881720430108 [2024-11-28 02:07:41,611 INFO L175 Difference]: Start difference. First operand has 103 places, 93 transitions, 226 flow. Second operand 3 states and 210 transitions. [2024-11-28 02:07:41,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 234 flow [2024-11-28 02:07:41,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 77 transitions, 222 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:41,618 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 186 flow [2024-11-28 02:07:41,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2024-11-28 02:07:41,621 INFO L279 CegarLoopForPetriNet]: 103 programPoint places, -13 predicate places. [2024-11-28 02:07:41,621 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 186 flow [2024-11-28 02:07:41,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 02:07:41,622 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:41,623 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 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 02:07:41,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:07:41,623 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-11-28 02:07:41,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:41,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1516115680, now seen corresponding path program 1 times [2024-11-28 02:07:41,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:41,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517034457] [2024-11-28 02:07:41,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:41,650 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:41,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:41,674 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:41,674 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-28 02:07:41,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-28 02:07:41,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-28 02:07:41,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-28 02:07:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-28 02:07:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-28 02:07:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-28 02:07:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-28 02:07:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-28 02:07:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-28 02:07:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-28 02:07:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-28 02:07:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-28 02:07:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-28 02:07:41,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:07:41,677 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:07:41,677 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:41,677 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-28 02:07:41,725 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:41,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 266 flow [2024-11-28 02:07:41,751 INFO L124 PetriNetUnfolderBase]: 7/154 cut-off events. [2024-11-28 02:07:41,752 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-28 02:07:41,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 154 events. 7/154 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 398 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 152. Up to 14 conditions per place. [2024-11-28 02:07:41,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 106 transitions, 266 flow [2024-11-28 02:07:41,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 106 transitions, 266 flow [2024-11-28 02:07:41,756 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:41,757 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;@36c29fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:41,759 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-28 02:07:41,761 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:41,761 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-28 02:07:41,761 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:41,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:41,761 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:41,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:41,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash -492924210, now seen corresponding path program 1 times [2024-11-28 02:07:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076500576] [2024-11-28 02:07:41,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:41,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:41,855 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 02:07:41,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:41,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076500576] [2024-11-28 02:07:41,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076500576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:41,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:41,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249103259] [2024-11-28 02:07:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:41,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:41,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:41,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:41,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:41,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 106 [2024-11-28 02:07:41,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 02:07:41,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:41,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 106 [2024-11-28 02:07:41,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:43,243 INFO L124 PetriNetUnfolderBase]: 3282/7296 cut-off events. [2024-11-28 02:07:43,243 INFO L125 PetriNetUnfolderBase]: For 7882/7882 co-relation queries the response was YES. [2024-11-28 02:07:43,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14052 conditions, 7296 events. 3282/7296 cut-off events. For 7882/7882 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 66584 event pairs, 3282 based on Foata normal form. 1093/7955 useless extension candidates. Maximal degree in co-relation 4201. Up to 4378 conditions per place. [2024-11-28 02:07:43,319 INFO L140 encePairwiseOnDemand]: 89/106 looper letters, 21 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-11-28 02:07:43,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 88 transitions, 276 flow [2024-11-28 02:07:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2024-11-28 02:07:43,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7515723270440252 [2024-11-28 02:07:43,321 INFO L175 Difference]: Start difference. First operand has 118 places, 106 transitions, 266 flow. Second operand 3 states and 239 transitions. [2024-11-28 02:07:43,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 88 transitions, 276 flow [2024-11-28 02:07:43,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 88 transitions, 256 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:43,330 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 214 flow [2024-11-28 02:07:43,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2024-11-28 02:07:43,331 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -15 predicate places. [2024-11-28 02:07:43,331 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 214 flow [2024-11-28 02:07:43,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 02:07:43,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:43,332 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 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 02:07:43,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:07:43,333 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:43,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:43,333 INFO L85 PathProgramCache]: Analyzing trace with hash 939647955, now seen corresponding path program 1 times [2024-11-28 02:07:43,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:43,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331952479] [2024-11-28 02:07:43,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:43,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:43,392 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:43,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:43,426 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:43,426 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-28 02:07:43,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-11-28 02:07:43,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-11-28 02:07:43,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-11-28 02:07:43,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-11-28 02:07:43,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-11-28 02:07:43,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:07:43,427 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:07:43,428 WARN L246 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:43,431 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-11-28 02:07:43,496 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:43,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 119 transitions, 308 flow [2024-11-28 02:07:43,552 INFO L124 PetriNetUnfolderBase]: 8/175 cut-off events. [2024-11-28 02:07:43,552 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-28 02:07:43,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 175 events. 8/175 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 482 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 180. Up to 16 conditions per place. [2024-11-28 02:07:43,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 119 transitions, 308 flow [2024-11-28 02:07:43,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 119 transitions, 308 flow [2024-11-28 02:07:43,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:43,560 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;@36c29fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:43,560 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-28 02:07:43,562 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:43,562 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-28 02:07:43,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:43,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:43,567 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:43,567 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-28 02:07:43,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2063255333, now seen corresponding path program 1 times [2024-11-28 02:07:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:43,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251526077] [2024-11-28 02:07:43,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:43,643 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 02:07:43,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:43,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251526077] [2024-11-28 02:07:43,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251526077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:43,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:43,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:43,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113749409] [2024-11-28 02:07:43,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:43,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:43,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:43,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:43,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:43,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 119 [2024-11-28 02:07:43,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 119 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 02:07:43,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:43,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 119 [2024-11-28 02:07:43,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:48,432 INFO L124 PetriNetUnfolderBase]: 12030/23987 cut-off events. [2024-11-28 02:07:48,432 INFO L125 PetriNetUnfolderBase]: For 32188/32188 co-relation queries the response was YES. [2024-11-28 02:07:48,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47511 conditions, 23987 events. 12030/23987 cut-off events. For 32188/32188 co-relation queries the response was YES. Maximal size of possible extension queue 1278. Compared 237606 event pairs, 12030 based on Foata normal form. 3280/25944 useless extension candidates. Maximal degree in co-relation 14385. Up to 15313 conditions per place. [2024-11-28 02:07:48,706 INFO L140 encePairwiseOnDemand]: 100/119 looper letters, 24 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-11-28 02:07:48,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 99 transitions, 320 flow [2024-11-28 02:07:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2024-11-28 02:07:48,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7507002801120448 [2024-11-28 02:07:48,709 INFO L175 Difference]: Start difference. First operand has 133 places, 119 transitions, 308 flow. Second operand 3 states and 268 transitions. [2024-11-28 02:07:48,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 99 transitions, 320 flow [2024-11-28 02:07:48,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 99 transitions, 290 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:48,740 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 242 flow [2024-11-28 02:07:48,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2024-11-28 02:07:48,742 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, -17 predicate places. [2024-11-28 02:07:48,742 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 242 flow [2024-11-28 02:07:48,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 02:07:48,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:48,743 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 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 02:07:48,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:07:48,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-28 02:07:48,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:48,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1176344639, now seen corresponding path program 1 times [2024-11-28 02:07:48,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:48,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156531403] [2024-11-28 02:07:48,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:48,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:48,767 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:48,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:48,798 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:48,798 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-28 02:07:48,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-28 02:07:48,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-28 02:07:48,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-28 02:07:48,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-28 02:07:48,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-28 02:07:48,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-28 02:07:48,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:07:48,803 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:07:48,803 WARN L246 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:48,803 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-11-28 02:07:48,847 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:48,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 132 transitions, 352 flow [2024-11-28 02:07:48,867 INFO L124 PetriNetUnfolderBase]: 9/196 cut-off events. [2024-11-28 02:07:48,867 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-28 02:07:48,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 196 events. 9/196 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 559 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 209. Up to 18 conditions per place. [2024-11-28 02:07:48,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 132 transitions, 352 flow [2024-11-28 02:07:48,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 132 transitions, 352 flow [2024-11-28 02:07:48,871 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:48,872 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;@36c29fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:48,872 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-28 02:07:48,873 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:48,873 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-28 02:07:48,873 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:48,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:48,873 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:48,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:07:48,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash 675898409, now seen corresponding path program 1 times [2024-11-28 02:07:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:48,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956234617] [2024-11-28 02:07:48,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:48,906 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 02:07:48,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:48,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956234617] [2024-11-28 02:07:48,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956234617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:48,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:48,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:48,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183588775] [2024-11-28 02:07:48,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:48,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:48,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:48,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:48,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:48,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 132 [2024-11-28 02:07:48,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 132 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 02:07:48,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:48,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 132 [2024-11-28 02:07:48,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:58,649 INFO L124 PetriNetUnfolderBase]: 42648/78424 cut-off events. [2024-11-28 02:07:58,650 INFO L125 PetriNetUnfolderBase]: For 126236/126236 co-relation queries the response was YES. [2024-11-28 02:07:58,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158811 conditions, 78424 events. 42648/78424 cut-off events. For 126236/126236 co-relation queries the response was YES. Maximal size of possible extension queue 3426. Compared 831240 event pairs, 42648 based on Foata normal form. 9841/84271 useless extension candidates. Maximal degree in co-relation 48572. Up to 52492 conditions per place. [2024-11-28 02:07:59,379 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 27 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2024-11-28 02:07:59,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 110 transitions, 366 flow [2024-11-28 02:07:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2024-11-28 02:07:59,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-28 02:07:59,381 INFO L175 Difference]: Start difference. First operand has 148 places, 132 transitions, 352 flow. Second operand 3 states and 297 transitions. [2024-11-28 02:07:59,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 110 transitions, 366 flow [2024-11-28 02:07:59,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 110 transitions, 324 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:59,475 INFO L231 Difference]: Finished difference. Result has 129 places, 110 transitions, 270 flow [2024-11-28 02:07:59,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=129, PETRI_TRANSITIONS=110} [2024-11-28 02:07:59,476 INFO L279 CegarLoopForPetriNet]: 148 programPoint places, -19 predicate places. [2024-11-28 02:07:59,478 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 110 transitions, 270 flow [2024-11-28 02:07:59,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 02:07:59,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:59,479 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 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 02:07:59,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:07:59,479 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:07:59,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash -131330652, now seen corresponding path program 1 times [2024-11-28 02:07:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:59,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173451945] [2024-11-28 02:07:59,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:59,507 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:59,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:59,542 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:59,542 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-11-28 02:07:59,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-11-28 02:07:59,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-11-28 02:07:59,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-11-28 02:07:59,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-11-28 02:07:59,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-11-28 02:07:59,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-11-28 02:07:59,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-11-28 02:07:59,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:07:59,546 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:07:59,547 WARN L246 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:59,549 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2024-11-28 02:07:59,600 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:59,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 145 transitions, 398 flow [2024-11-28 02:07:59,627 INFO L124 PetriNetUnfolderBase]: 10/217 cut-off events. [2024-11-28 02:07:59,627 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-11-28 02:07:59,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 217 events. 10/217 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 627 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 239. Up to 20 conditions per place. [2024-11-28 02:07:59,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 145 transitions, 398 flow [2024-11-28 02:07:59,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 145 transitions, 398 flow [2024-11-28 02:07:59,631 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:59,632 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;@36c29fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:59,632 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-28 02:07:59,633 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:59,633 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-28 02:07:59,633 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:59,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:59,633 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:59,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-11-28 02:07:59,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash -360027686, now seen corresponding path program 1 times [2024-11-28 02:07:59,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:59,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980224700] [2024-11-28 02:07:59,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:59,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:59,661 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 02:07:59,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:59,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980224700] [2024-11-28 02:07:59,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980224700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:59,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:59,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:59,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000702987] [2024-11-28 02:07:59,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:59,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:59,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:59,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:59,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:59,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 145 [2024-11-28 02:07:59,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 02:07:59,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:59,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 145 [2024-11-28 02:07:59,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand