./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8fc3dc66 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/goblint-regression/28-race_reach_61-invariant_racing.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 b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 11:09:23,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 11:09:23,459 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 11:09:23,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 11:09:23,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 11:09:23,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 11:09:23,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 11:09:23,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 11:09:23,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 11:09:23,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 11:09:23,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 11:09:23,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 11:09:23,482 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 11:09:23,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 11:09:23,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 11:09:23,483 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 11:09:23,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 11:09:23,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 11:09:23,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 11:09:23,483 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 11:09:23,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 11:09:23,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 11:09:23,483 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 11:09:23,483 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 11:09:23,484 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 11:09:23,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 11:09:23,484 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 11:09:23,484 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 11:09:23,484 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 11:09:23,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 11:09:23,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 11:09:23,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:09:23,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 11:09:23,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 11:09:23,485 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 11:09:23,485 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 11:09:23,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 11:09:23,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 11:09:23,485 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 11:09:23,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 11:09:23,485 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 11:09:23,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 11:09:23,485 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 -> b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 [2025-03-17 11:09:23,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 11:09:23,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 11:09:23,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 11:09:23,714 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 11:09:23,715 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 11:09:23,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2025-03-17 11:09:24,847 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21549fdb/8571bded9cef4e0eb9b3d6330c5cb610/FLAG26e1f3873 [2025-03-17 11:09:25,118 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 11:09:25,118 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2025-03-17 11:09:25,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21549fdb/8571bded9cef4e0eb9b3d6330c5cb610/FLAG26e1f3873 [2025-03-17 11:09:25,144 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21549fdb/8571bded9cef4e0eb9b3d6330c5cb610 [2025-03-17 11:09:25,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 11:09:25,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 11:09:25,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 11:09:25,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 11:09:25,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 11:09:25,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e906c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25, skipping insertion in model container [2025-03-17 11:09:25,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 11:09:25,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:09:25,447 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 11:09:25,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:09:25,512 INFO L204 MainTranslator]: Completed translation [2025-03-17 11:09:25,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25 WrapperNode [2025-03-17 11:09:25,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 11:09:25,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 11:09:25,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 11:09:25,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 11:09:25,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,538 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2025-03-17 11:09:25,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 11:09:25,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 11:09:25,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 11:09:25,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 11:09:25,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,553 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 11:09:25,561 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 11:09:25,561 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 11:09:25,561 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 11:09:25,561 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (1/1) ... [2025-03-17 11:09:25,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:09:25,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:09:25,588 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) [2025-03-17 11:09:25,590 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 [2025-03-17 11:09:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 11:09:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 11:09:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 11:09:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 11:09:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 11:09:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 11:09:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 11:09:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 11:09:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 11:09:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 11:09:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 11:09:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 11:09:25,608 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 11:09:25,703 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 11:09:25,705 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 11:09:25,868 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-17 11:09:25,869 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L713-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-17 11:09:25,927 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 11:09:25,927 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 11:09:25,968 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 11:09:25,968 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 11:09:25,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:09:25 BoogieIcfgContainer [2025-03-17 11:09:25,968 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 11:09:25,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 11:09:25,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 11:09:25,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 11:09:25,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:09:25" (1/3) ... [2025-03-17 11:09:25,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0f82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:09:25, skipping insertion in model container [2025-03-17 11:09:25,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:09:25" (2/3) ... [2025-03-17 11:09:25,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0f82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:09:25, skipping insertion in model container [2025-03-17 11:09:25,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:09:25" (3/3) ... [2025-03-17 11:09:25,975 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2025-03-17 11:09:25,984 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 11:09:25,985 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_61-invariant_racing.i that has 2 procedures, 171 locations, 1 initial locations, 7 loop locations, and 12 error locations. [2025-03-17 11:09:25,987 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 11:09:26,040 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 11:09:26,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 189 transitions, 385 flow [2025-03-17 11:09:26,160 INFO L124 PetriNetUnfolderBase]: 28/285 cut-off events. [2025-03-17 11:09:26,163 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 11:09:26,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 285 events. 28/285 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1104 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 158. Up to 6 conditions per place. [2025-03-17 11:09:26,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 189 transitions, 385 flow [2025-03-17 11:09:26,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 189 transitions, 385 flow [2025-03-17 11:09:26,181 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 11:09:26,191 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;@82d46ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 11:09:26,193 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-17 11:09:26,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 11:09:26,206 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2025-03-17 11:09:26,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:09:26,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:26,207 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] [2025-03-17 11:09:26,207 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2025-03-17 11:09:26,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1006508343, now seen corresponding path program 1 times [2025-03-17 11:09:26,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:26,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013975161] [2025-03-17 11:09:26,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:26,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:26,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 11:09:26,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 11:09:26,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:26,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:09:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:09:26,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:09:26,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013975161] [2025-03-17 11:09:26,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013975161] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:09:26,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:09:26,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 11:09:26,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961752327] [2025-03-17 11:09:26,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:09:26,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:09:26,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:09:26,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:09:26,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:09:26,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 189 [2025-03-17 11:09:26,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 189 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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) [2025-03-17 11:09:26,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:09:26,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 189 [2025-03-17 11:09:26,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:09:26,648 INFO L124 PetriNetUnfolderBase]: 122/1119 cut-off events. [2025-03-17 11:09:26,648 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 11:09:26,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 1119 events. 122/1119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7074 event pairs, 88 based on Foata normal form. 105/1111 useless extension candidates. Maximal degree in co-relation 1321. Up to 256 conditions per place. [2025-03-17 11:09:26,659 INFO L140 encePairwiseOnDemand]: 170/189 looper letters, 34 selfloop transitions, 2 changer transitions 0/181 dead transitions. [2025-03-17 11:09:26,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 181 transitions, 441 flow [2025-03-17 11:09:26,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:09:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:09:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2025-03-17 11:09:26,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8765432098765432 [2025-03-17 11:09:26,670 INFO L175 Difference]: Start difference. First operand has 174 places, 189 transitions, 385 flow. Second operand 3 states and 497 transitions. [2025-03-17 11:09:26,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 181 transitions, 441 flow [2025-03-17 11:09:26,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 181 transitions, 441 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 11:09:26,680 INFO L231 Difference]: Finished difference. Result has 175 places, 171 transitions, 357 flow [2025-03-17 11:09:26,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=175, PETRI_TRANSITIONS=171} [2025-03-17 11:09:26,686 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, 1 predicate places. [2025-03-17 11:09:26,686 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 171 transitions, 357 flow [2025-03-17 11:09:26,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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) [2025-03-17 11:09:26,686 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:26,686 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] [2025-03-17 11:09:26,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 11:09:26,687 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2025-03-17 11:09:26,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:26,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1121412021, now seen corresponding path program 1 times [2025-03-17 11:09:26,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:26,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581021327] [2025-03-17 11:09:26,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:26,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:26,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 11:09:26,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 11:09:26,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:26,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:09:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:09:27,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:09:27,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581021327] [2025-03-17 11:09:27,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581021327] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:09:27,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:09:27,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:09:27,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858724621] [2025-03-17 11:09:27,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:09:27,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:09:27,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:09:27,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:09:27,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:09:27,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 189 [2025-03-17 11:09:27,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 171 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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) [2025-03-17 11:09:27,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:09:27,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 189 [2025-03-17 11:09:27,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:09:27,470 INFO L124 PetriNetUnfolderBase]: 225/1358 cut-off events. [2025-03-17 11:09:27,471 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-17 11:09:27,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 1358 events. 225/1358 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 9267 event pairs, 138 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1794. Up to 369 conditions per place. [2025-03-17 11:09:27,478 INFO L140 encePairwiseOnDemand]: 183/189 looper letters, 72 selfloop transitions, 5 changer transitions 0/210 dead transitions. [2025-03-17 11:09:27,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 210 transitions, 589 flow [2025-03-17 11:09:27,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:09:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:09:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 882 transitions. [2025-03-17 11:09:27,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2025-03-17 11:09:27,485 INFO L175 Difference]: Start difference. First operand has 175 places, 171 transitions, 357 flow. Second operand 6 states and 882 transitions. [2025-03-17 11:09:27,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 210 transitions, 589 flow [2025-03-17 11:09:27,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 210 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 11:09:27,489 INFO L231 Difference]: Finished difference. Result has 177 places, 170 transitions, 361 flow [2025-03-17 11:09:27,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=361, PETRI_PLACES=177, PETRI_TRANSITIONS=170} [2025-03-17 11:09:27,491 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, 3 predicate places. [2025-03-17 11:09:27,491 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 170 transitions, 361 flow [2025-03-17 11:09:27,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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) [2025-03-17 11:09:27,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:27,492 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] [2025-03-17 11:09:27,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 11:09:27,492 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2025-03-17 11:09:27,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1304099954, now seen corresponding path program 1 times [2025-03-17 11:09:27,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:27,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163912564] [2025-03-17 11:09:27,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:27,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-17 11:09:27,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 11:09:27,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:27,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:09:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:09:27,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:09:27,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163912564] [2025-03-17 11:09:27,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163912564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:09:27,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:09:27,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 11:09:27,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870352391] [2025-03-17 11:09:27,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:09:27,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:09:27,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:09:27,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:09:27,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:09:27,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 189 [2025-03-17 11:09:27,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 170 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2025-03-17 11:09:27,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:09:27,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 189 [2025-03-17 11:09:27,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:09:27,813 INFO L124 PetriNetUnfolderBase]: 423/2406 cut-off events. [2025-03-17 11:09:27,813 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-03-17 11:09:27,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3352 conditions, 2406 events. 423/2406 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18512 event pairs, 160 based on Foata normal form. 0/2192 useless extension candidates. Maximal degree in co-relation 3290. Up to 544 conditions per place. [2025-03-17 11:09:27,821 INFO L140 encePairwiseOnDemand]: 167/189 looper letters, 61 selfloop transitions, 16 changer transitions 0/205 dead transitions. [2025-03-17 11:09:27,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 205 transitions, 588 flow [2025-03-17 11:09:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:09:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:09:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2025-03-17 11:09:27,823 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8342151675485009 [2025-03-17 11:09:27,823 INFO L175 Difference]: Start difference. First operand has 177 places, 170 transitions, 361 flow. Second operand 3 states and 473 transitions. [2025-03-17 11:09:27,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 205 transitions, 588 flow [2025-03-17 11:09:27,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 205 transitions, 578 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 11:09:27,826 INFO L231 Difference]: Finished difference. Result has 176 places, 186 transitions, 491 flow [2025-03-17 11:09:27,826 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=491, PETRI_PLACES=176, PETRI_TRANSITIONS=186} [2025-03-17 11:09:27,827 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, 2 predicate places. [2025-03-17 11:09:27,827 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 186 transitions, 491 flow [2025-03-17 11:09:27,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2025-03-17 11:09:27,827 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:27,828 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:09:27,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 11:09:27,828 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2025-03-17 11:09:27,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:27,828 INFO L85 PathProgramCache]: Analyzing trace with hash -645325556, now seen corresponding path program 1 times [2025-03-17 11:09:27,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:27,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87525445] [2025-03-17 11:09:27,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:27,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:27,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-17 11:09:27,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-17 11:09:27,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:27,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 11:09:27,848 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 11:09:27,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-17 11:09:27,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-17 11:09:27,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:27,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 11:09:27,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 11:09:27,881 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 11:09:27,882 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2025-03-17 11:09:27,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2025-03-17 11:09:27,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2025-03-17 11:09:27,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2025-03-17 11:09:27,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2025-03-17 11:09:27,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 11:09:27,884 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-17 11:09:27,885 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 11:09:27,885 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 11:09:27,911 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 11:09:27,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 250 transitions, 516 flow [2025-03-17 11:09:27,946 INFO L124 PetriNetUnfolderBase]: 47/469 cut-off events. [2025-03-17 11:09:27,946 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 11:09:27,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 469 events. 47/469 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2093 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 287. Up to 9 conditions per place. [2025-03-17 11:09:27,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 250 transitions, 516 flow [2025-03-17 11:09:27,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 250 transitions, 516 flow [2025-03-17 11:09:27,956 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 11:09:27,956 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;@82d46ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 11:09:27,956 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2025-03-17 11:09:27,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 11:09:27,959 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2025-03-17 11:09:27,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:09:27,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:27,959 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] [2025-03-17 11:09:27,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2025-03-17 11:09:27,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:27,960 INFO L85 PathProgramCache]: Analyzing trace with hash -577504509, now seen corresponding path program 1 times [2025-03-17 11:09:27,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:27,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698100497] [2025-03-17 11:09:27,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:27,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:27,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 11:09:27,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 11:09:27,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:27,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:09:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:09:27,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:09:27,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698100497] [2025-03-17 11:09:27,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698100497] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:09:27,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:09:27,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 11:09:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847130857] [2025-03-17 11:09:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:09:27,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:09:27,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:09:27,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:09:27,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:09:28,010 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 250 [2025-03-17 11:09:28,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 250 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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) [2025-03-17 11:09:28,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:09:28,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 250 [2025-03-17 11:09:28,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:09:29,199 INFO L124 PetriNetUnfolderBase]: 3058/12552 cut-off events. [2025-03-17 11:09:29,200 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2025-03-17 11:09:29,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17269 conditions, 12552 events. 3058/12552 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 138347 event pairs, 1340 based on Foata normal form. 1622/12892 useless extension candidates. Maximal degree in co-relation 1734. Up to 4643 conditions per place. [2025-03-17 11:09:29,280 INFO L140 encePairwiseOnDemand]: 225/250 looper letters, 47 selfloop transitions, 2 changer transitions 0/237 dead transitions. [2025-03-17 11:09:29,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 237 transitions, 588 flow [2025-03-17 11:09:29,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:09:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:09:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2025-03-17 11:09:29,282 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.86 [2025-03-17 11:09:29,282 INFO L175 Difference]: Start difference. First operand has 229 places, 250 transitions, 516 flow. Second operand 3 states and 645 transitions. [2025-03-17 11:09:29,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 237 transitions, 588 flow [2025-03-17 11:09:29,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 237 transitions, 588 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 11:09:29,288 INFO L231 Difference]: Finished difference. Result has 230 places, 227 transitions, 480 flow [2025-03-17 11:09:29,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=230, PETRI_TRANSITIONS=227} [2025-03-17 11:09:29,289 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 1 predicate places. [2025-03-17 11:09:29,289 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 227 transitions, 480 flow [2025-03-17 11:09:29,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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) [2025-03-17 11:09:29,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:29,290 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] [2025-03-17 11:09:29,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 11:09:29,290 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2025-03-17 11:09:29,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:29,290 INFO L85 PathProgramCache]: Analyzing trace with hash -617123323, now seen corresponding path program 1 times [2025-03-17 11:09:29,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:29,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326907363] [2025-03-17 11:09:29,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:29,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:29,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 11:09:29,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 11:09:29,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:29,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:09:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:09:29,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:09:29,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326907363] [2025-03-17 11:09:29,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326907363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:09:29,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:09:29,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:09:29,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061599104] [2025-03-17 11:09:29,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:09:29,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:09:29,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:09:29,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:09:29,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:09:29,650 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 250 [2025-03-17 11:09:29,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 227 transitions, 480 flow. Second operand has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 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) [2025-03-17 11:09:29,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:09:29,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 250 [2025-03-17 11:09:29,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:09:31,278 INFO L124 PetriNetUnfolderBase]: 5348/18924 cut-off events. [2025-03-17 11:09:31,278 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2025-03-17 11:09:31,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27589 conditions, 18924 events. 5348/18924 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 218289 event pairs, 2123 based on Foata normal form. 0/17415 useless extension candidates. Maximal degree in co-relation 9676. Up to 6347 conditions per place. [2025-03-17 11:09:31,380 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 124 selfloop transitions, 6 changer transitions 0/306 dead transitions. [2025-03-17 11:09:31,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 306 transitions, 898 flow [2025-03-17 11:09:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:09:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:09:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1192 transitions. [2025-03-17 11:09:31,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7946666666666666 [2025-03-17 11:09:31,384 INFO L175 Difference]: Start difference. First operand has 230 places, 227 transitions, 480 flow. Second operand 6 states and 1192 transitions. [2025-03-17 11:09:31,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 306 transitions, 898 flow [2025-03-17 11:09:31,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 306 transitions, 896 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 11:09:31,391 INFO L231 Difference]: Finished difference. Result has 233 places, 226 transitions, 488 flow [2025-03-17 11:09:31,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=488, PETRI_PLACES=233, PETRI_TRANSITIONS=226} [2025-03-17 11:09:31,392 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 4 predicate places. [2025-03-17 11:09:31,393 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 226 transitions, 488 flow [2025-03-17 11:09:31,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 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) [2025-03-17 11:09:31,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:31,394 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] [2025-03-17 11:09:31,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 11:09:31,394 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2025-03-17 11:09:31,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash -330142575, now seen corresponding path program 1 times [2025-03-17 11:09:31,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:31,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349553431] [2025-03-17 11:09:31,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:31,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:31,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-17 11:09:31,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 11:09:31,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:31,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:09:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:09:31,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:09:31,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349553431] [2025-03-17 11:09:31,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349553431] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:09:31,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:09:31,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 11:09:31,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847977731] [2025-03-17 11:09:31,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:09:31,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:09:31,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:09:31,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:09:31,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:09:31,476 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 250 [2025-03-17 11:09:31,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 226 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2025-03-17 11:09:31,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:09:31,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 250 [2025-03-17 11:09:31,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:09:36,261 INFO L124 PetriNetUnfolderBase]: 23170/71350 cut-off events. [2025-03-17 11:09:36,261 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2025-03-17 11:09:36,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108661 conditions, 71350 events. 23170/71350 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 1222. Compared 932630 event pairs, 8784 based on Foata normal form. 0/64530 useless extension candidates. Maximal degree in co-relation 55019. Up to 22148 conditions per place. [2025-03-17 11:09:36,781 INFO L140 encePairwiseOnDemand]: 217/250 looper letters, 96 selfloop transitions, 24 changer transitions 0/281 dead transitions. [2025-03-17 11:09:36,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 281 transitions, 849 flow [2025-03-17 11:09:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:09:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:09:36,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2025-03-17 11:09:36,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.82 [2025-03-17 11:09:36,783 INFO L175 Difference]: Start difference. First operand has 233 places, 226 transitions, 488 flow. Second operand 3 states and 615 transitions. [2025-03-17 11:09:36,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 281 transitions, 849 flow [2025-03-17 11:09:36,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 281 transitions, 837 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 11:09:36,791 INFO L231 Difference]: Finished difference. Result has 232 places, 250 transitions, 686 flow [2025-03-17 11:09:36,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=686, PETRI_PLACES=232, PETRI_TRANSITIONS=250} [2025-03-17 11:09:36,792 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 3 predicate places. [2025-03-17 11:09:36,793 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 250 transitions, 686 flow [2025-03-17 11:09:36,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2025-03-17 11:09:36,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:36,793 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] [2025-03-17 11:09:36,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 11:09:36,794 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2025-03-17 11:09:36,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:36,795 INFO L85 PathProgramCache]: Analyzing trace with hash -42085594, now seen corresponding path program 1 times [2025-03-17 11:09:36,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:36,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607520089] [2025-03-17 11:09:36,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:36,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:36,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-17 11:09:36,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-17 11:09:36,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:36,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:09:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:09:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:09:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607520089] [2025-03-17 11:09:36,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607520089] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:09:36,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:09:36,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:09:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322424397] [2025-03-17 11:09:36,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:09:36,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 11:09:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:09:36,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 11:09:36,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 11:09:36,915 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 250 [2025-03-17 11:09:36,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 250 transitions, 686 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 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) [2025-03-17 11:09:36,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:09:36,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 250 [2025-03-17 11:09:36,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:09:41,642 INFO L124 PetriNetUnfolderBase]: 14190/59828 cut-off events. [2025-03-17 11:09:41,642 INFO L125 PetriNetUnfolderBase]: For 4447/4832 co-relation queries the response was YES. [2025-03-17 11:09:41,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91805 conditions, 59828 events. 14190/59828 cut-off events. For 4447/4832 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 844783 event pairs, 5940 based on Foata normal form. 11/54044 useless extension candidates. Maximal degree in co-relation 21952. Up to 15184 conditions per place. [2025-03-17 11:09:41,995 INFO L140 encePairwiseOnDemand]: 245/250 looper letters, 88 selfloop transitions, 5 changer transitions 0/302 dead transitions. [2025-03-17 11:09:41,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 302 transitions, 976 flow [2025-03-17 11:09:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:09:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:09:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1216 transitions. [2025-03-17 11:09:41,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8106666666666666 [2025-03-17 11:09:41,998 INFO L175 Difference]: Start difference. First operand has 232 places, 250 transitions, 686 flow. Second operand 6 states and 1216 transitions. [2025-03-17 11:09:41,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 302 transitions, 976 flow [2025-03-17 11:09:42,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 302 transitions, 928 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 11:09:42,026 INFO L231 Difference]: Finished difference. Result has 238 places, 252 transitions, 664 flow [2025-03-17 11:09:42,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=664, PETRI_PLACES=238, PETRI_TRANSITIONS=252} [2025-03-17 11:09:42,027 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 9 predicate places. [2025-03-17 11:09:42,027 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 252 transitions, 664 flow [2025-03-17 11:09:42,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 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) [2025-03-17 11:09:42,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:42,027 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] [2025-03-17 11:09:42,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 11:09:42,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2025-03-17 11:09:42,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1966875483, now seen corresponding path program 1 times [2025-03-17 11:09:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:42,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526942291] [2025-03-17 11:09:42,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:42,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:42,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-17 11:09:42,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-17 11:09:42,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:42,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:09:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 11:09:42,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:09:42,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526942291] [2025-03-17 11:09:42,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526942291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:09:42,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:09:42,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 11:09:42,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039201002] [2025-03-17 11:09:42,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:09:42,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:09:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:09:42,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:09:42,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:09:42,084 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 250 [2025-03-17 11:09:42,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 252 transitions, 664 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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) [2025-03-17 11:09:42,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:09:42,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 250 [2025-03-17 11:09:42,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:09:47,165 INFO L124 PetriNetUnfolderBase]: 17541/65733 cut-off events. [2025-03-17 11:09:47,165 INFO L125 PetriNetUnfolderBase]: For 1101/1925 co-relation queries the response was YES. [2025-03-17 11:09:47,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99523 conditions, 65733 events. 17541/65733 cut-off events. For 1101/1925 co-relation queries the response was YES. Maximal size of possible extension queue 1350. Compared 926991 event pairs, 8624 based on Foata normal form. 24/58647 useless extension candidates. Maximal degree in co-relation 99400. Up to 17635 conditions per place. [2025-03-17 11:09:47,609 INFO L140 encePairwiseOnDemand]: 239/250 looper letters, 70 selfloop transitions, 9 changer transitions 0/286 dead transitions. [2025-03-17 11:09:47,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 286 transitions, 892 flow [2025-03-17 11:09:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:09:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:09:47,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2025-03-17 11:09:47,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.844 [2025-03-17 11:09:47,611 INFO L175 Difference]: Start difference. First operand has 238 places, 252 transitions, 664 flow. Second operand 3 states and 633 transitions. [2025-03-17 11:09:47,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 286 transitions, 892 flow [2025-03-17 11:09:47,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 286 transitions, 886 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-17 11:09:47,616 INFO L231 Difference]: Finished difference. Result has 239 places, 257 transitions, 718 flow [2025-03-17 11:09:47,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=718, PETRI_PLACES=239, PETRI_TRANSITIONS=257} [2025-03-17 11:09:47,617 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 10 predicate places. [2025-03-17 11:09:47,617 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 257 transitions, 718 flow [2025-03-17 11:09:47,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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) [2025-03-17 11:09:47,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:47,617 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:09:47,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 11:09:47,618 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2025-03-17 11:09:47,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:47,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1069038166, now seen corresponding path program 1 times [2025-03-17 11:09:47,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:47,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535439765] [2025-03-17 11:09:47,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:47,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:47,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 11:09:47,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 11:09:47,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:47,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 11:09:47,636 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 11:09:47,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 11:09:47,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 11:09:47,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:47,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 11:09:47,657 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 11:09:47,657 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 11:09:47,657 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2025-03-17 11:09:47,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2025-03-17 11:09:47,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2025-03-17 11:09:47,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2025-03-17 11:09:47,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2025-03-17 11:09:47,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2025-03-17 11:09:47,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2025-03-17 11:09:47,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2025-03-17 11:09:47,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2025-03-17 11:09:47,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2025-03-17 11:09:47,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2025-03-17 11:09:47,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2025-03-17 11:09:47,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 11:09:47,659 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-03-17 11:09:47,660 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 11:09:47,660 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 11:09:47,687 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 11:09:47,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 311 transitions, 649 flow [2025-03-17 11:09:47,735 INFO L124 PetriNetUnfolderBase]: 69/696 cut-off events. [2025-03-17 11:09:47,735 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-17 11:09:47,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 696 events. 69/696 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3277 event pairs, 1 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 477. Up to 12 conditions per place. [2025-03-17 11:09:47,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 311 transitions, 649 flow [2025-03-17 11:09:47,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 311 transitions, 649 flow [2025-03-17 11:09:47,749 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 11:09:47,749 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;@82d46ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 11:09:47,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2025-03-17 11:09:47,751 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 11:09:47,751 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2025-03-17 11:09:47,751 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:09:47,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:09:47,751 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] [2025-03-17 11:09:47,751 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-17 11:09:47,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:09:47,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1777242394, now seen corresponding path program 1 times [2025-03-17 11:09:47,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:09:47,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197144496] [2025-03-17 11:09:47,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:09:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:09:47,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 11:09:47,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 11:09:47,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:09:47,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:09:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:09:47,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:09:47,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197144496] [2025-03-17 11:09:47,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197144496] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:09:47,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:09:47,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 11:09:47,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632950917] [2025-03-17 11:09:47,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:09:47,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:09:47,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:09:47,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:09:47,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:09:47,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 311 [2025-03-17 11:09:47,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 311 transitions, 649 flow. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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) [2025-03-17 11:09:47,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:09:47,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 311 [2025-03-17 11:09:47,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:10:01,626 INFO L124 PetriNetUnfolderBase]: 52098/154808 cut-off events. [2025-03-17 11:10:01,626 INFO L125 PetriNetUnfolderBase]: For 2152/2152 co-relation queries the response was YES. [2025-03-17 11:10:02,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225634 conditions, 154808 events. 52098/154808 cut-off events. For 2152/2152 co-relation queries the response was YES. Maximal size of possible extension queue 2996. Compared 2264119 event pairs, 32391 based on Foata normal form. 23714/164023 useless extension candidates. Maximal degree in co-relation 22132. Up to 69838 conditions per place. [2025-03-17 11:10:03,104 INFO L140 encePairwiseOnDemand]: 280/311 looper letters, 59 selfloop transitions, 2 changer transitions 0/292 dead transitions. [2025-03-17 11:10:03,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 292 transitions, 733 flow [2025-03-17 11:10:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:10:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:10:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2025-03-17 11:10:03,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8488745980707395 [2025-03-17 11:10:03,106 INFO L175 Difference]: Start difference. First operand has 284 places, 311 transitions, 649 flow. Second operand 3 states and 792 transitions. [2025-03-17 11:10:03,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 292 transitions, 733 flow [2025-03-17 11:10:03,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 292 transitions, 733 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 11:10:03,111 INFO L231 Difference]: Finished difference. Result has 285 places, 282 transitions, 601 flow [2025-03-17 11:10:03,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=601, PETRI_PLACES=285, PETRI_TRANSITIONS=282} [2025-03-17 11:10:03,112 INFO L279 CegarLoopForPetriNet]: 284 programPoint places, 1 predicate places. [2025-03-17 11:10:03,112 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 282 transitions, 601 flow [2025-03-17 11:10:03,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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) [2025-03-17 11:10:03,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:10:03,113 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] [2025-03-17 11:10:03,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 11:10:03,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-17 11:10:03,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:10:03,113 INFO L85 PathProgramCache]: Analyzing trace with hash -299025828, now seen corresponding path program 1 times [2025-03-17 11:10:03,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:10:03,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245572482] [2025-03-17 11:10:03,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:10:03,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:10:03,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 11:10:03,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 11:10:03,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:10:03,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:10:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:10:03,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:10:03,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245572482] [2025-03-17 11:10:03,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245572482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:10:03,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:10:03,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:10:03,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299251873] [2025-03-17 11:10:03,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:10:03,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:10:03,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:10:03,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:10:03,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:10:03,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 311 [2025-03-17 11:10:03,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 282 transitions, 601 flow. Second operand has 6 states, 6 states have (on average 221.5) internal successors, (1329), 6 states have internal predecessors, (1329), 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) [2025-03-17 11:10:03,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:10:03,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 311 [2025-03-17 11:10:03,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand