./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:16:32,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:16:32,990 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-01-09 21:16:32,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:16:32,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:16:33,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:16:33,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:16:33,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:16:33,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:16:33,006 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:16:33,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:16:33,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:16:33,007 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:16:33,007 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:16:33,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:16:33,007 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:16:33,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:16:33,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:16:33,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:16:33,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:16:33,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:16:33,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:16:33,008 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-01-09 21:16:33,008 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:16:33,008 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:16:33,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:16:33,008 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:16:33,008 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:16:33,008 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:16:33,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:16:33,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:16:33,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:16:33,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:16:33,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:16:33,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:16:33,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:16:33,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:16:33,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:16:33,009 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 21:16:33,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 21:16:33,009 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 21:16:33,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 21:16:33,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:16:33,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:16:33,010 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:16:33,010 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:16:33,010 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2025-01-09 21:16:33,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:16:33,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:16:33,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:16:33,191 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:16:33,191 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:16:33,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe035_power.i [2025-01-09 21:16:34,287 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3243c9e94/6aa57059161d429795aa2c1c7570b50b/FLAGb15616143 [2025-01-09 21:16:34,627 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:16:34,627 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_power.i [2025-01-09 21:16:34,642 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3243c9e94/6aa57059161d429795aa2c1c7570b50b/FLAGb15616143 [2025-01-09 21:16:34,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3243c9e94/6aa57059161d429795aa2c1c7570b50b [2025-01-09 21:16:34,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:16:34,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:16:34,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:16:34,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:16:34,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:16:34,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:16:34" (1/1) ... [2025-01-09 21:16:34,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9d69f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:34, skipping insertion in model container [2025-01-09 21:16:34,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:16:34" (1/1) ... [2025-01-09 21:16:34,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:16:35,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:16:35,029 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:16:35,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:16:35,139 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:16:35,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35 WrapperNode [2025-01-09 21:16:35,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:16:35,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:16:35,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:16:35,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:16:35,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,222 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 1753 [2025-01-09 21:16:35,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:16:35,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:16:35,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:16:35,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:16:35,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,276 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:16:35,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:16:35,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:16:35,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:16:35,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (1/1) ... [2025-01-09 21:16:35,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:16:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:16:35,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 21:16:35,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 21:16:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-09 21:16:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:16:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-01-09 21:16:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-01-09 21:16:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-01-09 21:16:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-01-09 21:16:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-01-09 21:16:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-01-09 21:16:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 21:16:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-09 21:16:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:16:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:16:35,390 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 21:16:35,594 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:16:35,596 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:16:37,798 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 21:16:37,798 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:16:45,447 WARN L170 LargeBlockEncoding]: Complex 6:118 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-01-09 21:16:46,470 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:16:46,470 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 21:16:46,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:16:46 BoogieIcfgContainer [2025-01-09 21:16:46,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:16:46,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:16:46,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:16:46,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:16:46,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:16:34" (1/3) ... [2025-01-09 21:16:46,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104ba768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:16:46, skipping insertion in model container [2025-01-09 21:16:46,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:16:35" (2/3) ... [2025-01-09 21:16:46,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104ba768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:16:46, skipping insertion in model container [2025-01-09 21:16:46,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:16:46" (3/3) ... [2025-01-09 21:16:46,478 INFO L128 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2025-01-09 21:16:46,492 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:16:46,496 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe035_power.i that has 4 procedures, 680 locations, 1 initial locations, 0 loop locations, and 567 error locations. [2025-01-09 21:16:46,496 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 21:16:47,428 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:16:47,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 689 places, 1272 transitions, 2556 flow [2025-01-09 21:16:48,630 INFO L124 PetriNetUnfolderBase]: 593/1269 cut-off events. [2025-01-09 21:16:48,633 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:16:48,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 1269 events. 593/1269 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6016 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 1233. Up to 6 conditions per place. [2025-01-09 21:16:48,657 INFO L82 GeneralOperation]: Start removeDead. Operand has 689 places, 1272 transitions, 2556 flow [2025-01-09 21:16:48,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 686 places, 1269 transitions, 2547 flow [2025-01-09 21:16:48,751 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:16:48,759 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;@41b0aa92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:16:48,759 INFO L334 AbstractCegarLoop]: Starting to check reachability of 957 error locations. [2025-01-09 21:16:48,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:16:48,768 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2025-01-09 21:16:48,768 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:16:48,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:16:48,769 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:16:48,770 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err4ASSERT_VIOLATIONDATA_RACE (and 953 more)] === [2025-01-09 21:16:48,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:16:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1411268603, now seen corresponding path program 1 times [2025-01-09 21:16:48,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:16:48,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879743665] [2025-01-09 21:16:48,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:16:48,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:16:48,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-01-09 21:16:48,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-01-09 21:16:48,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:16:48,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:16:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:16:49,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:16:49,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879743665] [2025-01-09 21:16:49,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879743665] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:16:49,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:16:49,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:16:49,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366513332] [2025-01-09 21:16:49,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:16:49,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:16:49,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:16:49,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:16:49,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:16:49,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 1272 [2025-01-09 21:16:49,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 1269 transitions, 2547 flow. Second operand has 2 states, 2 states have (on average 93.0) internal successors, (186), 2 states have internal predecessors, (186), 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) [2025-01-09 21:16:49,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:16:49,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 1272 [2025-01-09 21:16:49,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:17:23,935 INFO L124 PetriNetUnfolderBase]: 3090/7808 cut-off events. [2025-01-09 21:17:23,936 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-01-09 21:17:23,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11895 conditions, 7808 events. 3090/7808 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 73010 event pairs, 2010 based on Foata normal form. 614/6815 useless extension candidates. Maximal degree in co-relation 11847. Up to 3997 conditions per place. [2025-01-09 21:17:24,028 INFO L140 encePairwiseOnDemand]: 119/1272 looper letters, 26 selfloop transitions, 0 changer transitions 0/114 dead transitions. [2025-01-09 21:17:24,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 289 flow [2025-01-09 21:17:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:17:24,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:17:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1363 transitions. [2025-01-09 21:17:24,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357704402515723 [2025-01-09 21:17:24,053 INFO L175 Difference]: Start difference. First operand has 686 places, 1269 transitions, 2547 flow. Second operand 2 states and 1363 transitions. [2025-01-09 21:17:24,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 289 flow [2025-01-09 21:17:24,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 114 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-09 21:17:24,061 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 234 flow [2025-01-09 21:17:24,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1272, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=234, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2025-01-09 21:17:24,066 INFO L279 CegarLoopForPetriNet]: 686 programPoint places, -569 predicate places. [2025-01-09 21:17:24,067 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 234 flow [2025-01-09 21:17:24,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 93.0) internal successors, (186), 2 states have internal predecessors, (186), 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) [2025-01-09 21:17:24,068 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:17:24,068 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:17:24,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 21:17:24,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err4ASSERT_VIOLATIONDATA_RACE (and 953 more)] === [2025-01-09 21:17:24,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:17:24,069 INFO L85 PathProgramCache]: Analyzing trace with hash 452513923, now seen corresponding path program 1 times [2025-01-09 21:17:24,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:17:24,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859483470] [2025-01-09 21:17:24,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:17:24,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:17:24,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-01-09 21:17:24,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-01-09 21:17:24,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:17:24,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:17:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:17:24,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:17:24,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859483470] [2025-01-09 21:17:24,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859483470] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:17:24,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:17:24,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:17:24,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440634945] [2025-01-09 21:17:24,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:17:24,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:17:24,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:17:24,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:17:24,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:17:24,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 1272 [2025-01-09 21:17:24,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2025-01-09 21:17:24,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:17:24,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 1272 [2025-01-09 21:17:24,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:17:57,474 INFO L124 PetriNetUnfolderBase]: 4170/10736 cut-off events. [2025-01-09 21:17:57,474 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:17:57,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16333 conditions, 10736 events. 4170/10736 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 102546 event pairs, 930 based on Foata normal form. 0/8985 useless extension candidates. Maximal degree in co-relation 16330. Up to 4104 conditions per place. [2025-01-09 21:17:57,540 INFO L140 encePairwiseOnDemand]: 1270/1272 looper letters, 42 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2025-01-09 21:17:57,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 128 transitions, 348 flow [2025-01-09 21:17:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:17:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:17:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2025-01-09 21:17:57,548 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.08149895178197065 [2025-01-09 21:17:57,548 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 234 flow. Second operand 3 states and 311 transitions. [2025-01-09 21:17:57,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 128 transitions, 348 flow [2025-01-09 21:17:57,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 128 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 21:17:57,557 INFO L231 Difference]: Finished difference. Result has 118 places, 113 transitions, 234 flow [2025-01-09 21:17:57,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1272, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=118, PETRI_TRANSITIONS=113} [2025-01-09 21:17:57,558 INFO L279 CegarLoopForPetriNet]: 686 programPoint places, -568 predicate places. [2025-01-09 21:17:57,558 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 113 transitions, 234 flow [2025-01-09 21:17:57,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2025-01-09 21:17:57,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:17:57,558 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:17:57,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 21:17:57,559 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr179ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err4ASSERT_VIOLATIONDATA_RACE (and 953 more)] === [2025-01-09 21:17:57,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:17:57,559 INFO L85 PathProgramCache]: Analyzing trace with hash 205340295, now seen corresponding path program 1 times [2025-01-09 21:17:57,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:17:57,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416667245] [2025-01-09 21:17:57,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:17:57,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:17:57,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-01-09 21:17:57,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-01-09 21:17:57,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:17:57,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:17:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:17:57,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:17:57,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416667245] [2025-01-09 21:17:57,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416667245] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:17:57,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:17:57,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:17:57,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252221477] [2025-01-09 21:17:57,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:17:57,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:17:57,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:17:57,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:17:57,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:17:57,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 1272 [2025-01-09 21:17:57,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 113 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2025-01-09 21:17:57,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:17:57,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 1272 [2025-01-09 21:17:57,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand