./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 a45428c1422efa85fd947d764edf0847add56b17c38e18f54072b18b642fedaf --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:27:47,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:27:47,675 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-14 01:27:47,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:27:47,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:27:47,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:27:47,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:27:47,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:27:47,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:27:47,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:27:47,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:27:47,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:27:47,703 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:27:47,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:27:47,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:27:47,703 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:27:47,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:27:47,704 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:27:47,705 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:27:47,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:27:47,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:27:47,706 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/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 -> a45428c1422efa85fd947d764edf0847add56b17c38e18f54072b18b642fedaf [2025-03-14 01:27:47,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:27:47,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:27:47,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:27:47,939 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:27:47,939 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:27:47,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i [2025-03-14 01:27:49,086 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f415feb85/9166eaaba68741c38dc141ff51322998/FLAG6c1db131c [2025-03-14 01:27:49,446 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:27:49,450 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i [2025-03-14 01:27:49,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f415feb85/9166eaaba68741c38dc141ff51322998/FLAG6c1db131c [2025-03-14 01:27:49,677 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f415feb85/9166eaaba68741c38dc141ff51322998 [2025-03-14 01:27:49,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:27:49,680 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:27:49,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:27:49,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:27:49,685 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:27:49,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:27:49" (1/1) ... [2025-03-14 01:27:49,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ade8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:49, skipping insertion in model container [2025-03-14 01:27:49,686 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:27:49" (1/1) ... [2025-03-14 01:27:49,720 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:27:50,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:27:50,083 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:27:50,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:27:50,211 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:27:50,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50 WrapperNode [2025-03-14 01:27:50,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:27:50,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:27:50,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:27:50,212 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:27:50,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,289 INFO L138 Inliner]: procedures = 176, calls = 72, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 797 [2025-03-14 01:27:50,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:27:50,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:27:50,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:27:50,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:27:50,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,337 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:27:50,369 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:27:50,369 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:27:50,369 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:27:50,371 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (1/1) ... [2025-03-14 01:27:50,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:27:50,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:27:50,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-14 01:27:50,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-14 01:27:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-14 01:27:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-14 01:27:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 01:27:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:27:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-14 01:27:50,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-14 01:27:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-14 01:27:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-14 01:27:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-14 01:27:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-14 01:27:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-14 01:27:50,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-14 01:27:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-14 01:27:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 01:27:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:27:50,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:27:50,430 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:27:50,601 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:27:50,603 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:27:52,224 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:27:52,225 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:27:52,225 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:27:56,224 WARN L177 LargeBlockEncoding]: Complex 3:117 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-14 01:27:57,204 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:27:57,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:27:57 BoogieIcfgContainer [2025-03-14 01:27:57,205 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:27:57,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:27:57,207 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:27:57,210 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:27:57,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:27:49" (1/3) ... [2025-03-14 01:27:57,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b52519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:27:57, skipping insertion in model container [2025-03-14 01:27:57,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:27:50" (2/3) ... [2025-03-14 01:27:57,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b52519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:27:57, skipping insertion in model container [2025-03-14 01:27:57,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:27:57" (3/3) ... [2025-03-14 01:27:57,213 INFO L128 eAbstractionObserver]: Analyzing ICFG safe016_power.oepc.i [2025-03-14 01:27:57,227 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:27:57,230 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe016_power.oepc.i that has 5 procedures, 500 locations, 1 initial locations, 0 loop locations, and 356 error locations. [2025-03-14 01:27:57,231 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:27:58,906 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:27:58,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 512 places, 736 transitions, 1488 flow [2025-03-14 01:28:00,155 INFO L124 PetriNetUnfolderBase]: 237/732 cut-off events. [2025-03-14 01:28:00,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:28:00,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 732 events. 237/732 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 3760 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 677. Up to 3 conditions per place. [2025-03-14 01:28:00,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 512 places, 736 transitions, 1488 flow [2025-03-14 01:28:00,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 508 places, 732 transitions, 1476 flow [2025-03-14 01:28:00,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:28:00,275 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;@558f3d8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:28:00,275 INFO L334 AbstractCegarLoop]: Starting to check reachability of 577 error locations. [2025-03-14 01:28:00,295 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:28:00,296 INFO L124 PetriNetUnfolderBase]: 0/63 cut-off events. [2025-03-14 01:28:00,296 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:28:00,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:28:00,298 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] [2025-03-14 01:28:00,298 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err40ASSERT_VIOLATIONDATA_RACE === [P0Err149ASSERT_VIOLATIONDATA_RACE, P0Err148ASSERT_VIOLATIONDATA_RACE, P0Err147ASSERT_VIOLATIONDATA_RACE, P0Err146ASSERT_VIOLATIONDATA_RACE (and 573 more)] === [2025-03-14 01:28:00,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:28:00,304 INFO L85 PathProgramCache]: Analyzing trace with hash -68849810, now seen corresponding path program 1 times [2025-03-14 01:28:00,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:28:00,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662056461] [2025-03-14 01:28:00,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:28:00,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:28:00,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-14 01:28:00,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-14 01:28:00,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:28:00,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:28:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:28:00,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:28:00,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662056461] [2025-03-14 01:28:00,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662056461] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:28:00,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:28:00,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 01:28:00,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717006822] [2025-03-14 01:28:00,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:28:00,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-14 01:28:00,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:28:00,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-14 01:28:00,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-14 01:28:00,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 736 [2025-03-14 01:28:00,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 732 transitions, 1476 flow. Second operand has 2 states, 2 states have (on average 124.0) internal successors, (248), 2 states have internal predecessors, (248), 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) [2025-03-14 01:28:00,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:28:00,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 736 [2025-03-14 01:28:00,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:28:25,856 INFO L124 PetriNetUnfolderBase]: 5521/14628 cut-off events. [2025-03-14 01:28:25,856 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2025-03-14 01:28:25,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22132 conditions, 14628 events. 5521/14628 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 158322 event pairs, 4831 based on Foata normal form. 1146/14110 useless extension candidates. Maximal degree in co-relation 22062. Up to 7247 conditions per place. [2025-03-14 01:28:25,929 INFO L140 encePairwiseOnDemand]: 147/736 looper letters, 23 selfloop transitions, 0 changer transitions 0/141 dead transitions. [2025-03-14 01:28:25,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 141 transitions, 340 flow [2025-03-14 01:28:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-14 01:28:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-14 01:28:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 858 transitions. [2025-03-14 01:28:25,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5828804347826086 [2025-03-14 01:28:25,951 INFO L175 Difference]: Start difference. First operand has 508 places, 732 transitions, 1476 flow. Second operand 2 states and 858 transitions. [2025-03-14 01:28:25,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 141 transitions, 340 flow [2025-03-14 01:28:25,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-14 01:28:25,957 INFO L231 Difference]: Finished difference. Result has 149 places, 141 transitions, 290 flow [2025-03-14 01:28:25,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=290, PETRI_PLACES=149, PETRI_TRANSITIONS=141} [2025-03-14 01:28:25,963 INFO L279 CegarLoopForPetriNet]: 508 programPoint places, -359 predicate places. [2025-03-14 01:28:25,963 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 141 transitions, 290 flow [2025-03-14 01:28:25,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 124.0) internal successors, (248), 2 states have internal predecessors, (248), 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) [2025-03-14 01:28:25,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:28:25,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:28:25,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:28:25,965 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr136ASSERT_VIOLATIONDATA_RACE === [P0Err149ASSERT_VIOLATIONDATA_RACE, P0Err148ASSERT_VIOLATIONDATA_RACE, P0Err147ASSERT_VIOLATIONDATA_RACE, P0Err146ASSERT_VIOLATIONDATA_RACE (and 573 more)] === [2025-03-14 01:28:25,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:28:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1482763906, now seen corresponding path program 1 times [2025-03-14 01:28:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:28:25,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89096664] [2025-03-14 01:28:25,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:28:25,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:28:26,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-14 01:28:26,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-14 01:28:26,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:28:26,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:28:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:28:26,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:28:26,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89096664] [2025-03-14 01:28:26,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89096664] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:28:26,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:28:26,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:28:26,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705320991] [2025-03-14 01:28:26,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:28:26,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:28:26,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:28:26,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:28:26,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:28:26,138 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 736 [2025-03-14 01:28:26,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 141 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2025-03-14 01:28:26,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:28:26,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 736 [2025-03-14 01:28:26,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:28:58,414 INFO L124 PetriNetUnfolderBase]: 8321/20766 cut-off events. [2025-03-14 01:28:58,414 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:28:58,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31867 conditions, 20766 events. 8321/20766 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 219260 event pairs, 2351 based on Foata normal form. 0/18505 useless extension candidates. Maximal degree in co-relation 31864. Up to 7200 conditions per place. [2025-03-14 01:28:58,517 INFO L140 encePairwiseOnDemand]: 734/736 looper letters, 40 selfloop transitions, 1 changer transitions 0/156 dead transitions. [2025-03-14 01:28:58,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 156 transitions, 402 flow [2025-03-14 01:28:58,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:28:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:28:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2025-03-14 01:28:58,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.18206521739130435 [2025-03-14 01:28:58,524 INFO L175 Difference]: Start difference. First operand has 149 places, 141 transitions, 290 flow. Second operand 3 states and 402 transitions. [2025-03-14 01:28:58,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 156 transitions, 402 flow [2025-03-14 01:28:58,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 156 transitions, 402 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-14 01:28:58,528 INFO L231 Difference]: Finished difference. Result has 150 places, 140 transitions, 290 flow [2025-03-14 01:28:58,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=150, PETRI_TRANSITIONS=140} [2025-03-14 01:28:58,529 INFO L279 CegarLoopForPetriNet]: 508 programPoint places, -358 predicate places. [2025-03-14 01:28:58,529 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 140 transitions, 290 flow [2025-03-14 01:28:58,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2025-03-14 01:28:58,530 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:28:58,530 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, 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] [2025-03-14 01:28:58,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:28:58,530 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [P0Err149ASSERT_VIOLATIONDATA_RACE, P0Err148ASSERT_VIOLATIONDATA_RACE, P0Err147ASSERT_VIOLATIONDATA_RACE, P0Err146ASSERT_VIOLATIONDATA_RACE (and 573 more)] === [2025-03-14 01:28:58,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:28:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1823141401, now seen corresponding path program 1 times [2025-03-14 01:28:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:28:58,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883092487] [2025-03-14 01:28:58,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:28:58,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:28:58,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-14 01:28:58,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-14 01:28:58,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:28:58,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:28:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:28:58,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:28:58,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883092487] [2025-03-14 01:28:58,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883092487] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:28:58,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:28:58,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:28:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570459357] [2025-03-14 01:28:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:28:58,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:28:58,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:28:58,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:28:58,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:28:58,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 736 [2025-03-14 01:28:58,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 140 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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) [2025-03-14 01:28:58,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:28:58,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 736 [2025-03-14 01:28:58,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand