./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/ring_1w1r-2.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 b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 23:34:04,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 23:34:04,156 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-16 23:34:04,164 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 23:34:04,166 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 23:34:04,192 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 23:34:04,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 23:34:04,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 23:34:04,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 23:34:04,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 23:34:04,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 23:34:04,197 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 23:34:04,197 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 23:34:04,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 23:34:04,199 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 23:34:04,200 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 23:34:04,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 23:34:04,200 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 23:34:04,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 23:34:04,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 23:34:04,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 23:34:04,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 23:34:04,205 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-16 23:34:04,205 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 23:34:04,206 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-16 23:34:04,206 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 23:34:04,206 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 23:34:04,206 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 23:34:04,207 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 23:34:04,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 23:34:04,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 23:34:04,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:34:04,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 23:34:04,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 23:34:04,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 23:34:04,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 23:34:04,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 23:34:04,208 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 23:34:04,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 23:34:04,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 23:34:04,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 23:34:04,210 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b [2024-11-16 23:34:04,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 23:34:04,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 23:34:04,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 23:34:04,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 23:34:04,506 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 23:34:04,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2024-11-16 23:34:05,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 23:34:06,247 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 23:34:06,248 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2024-11-16 23:34:06,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36804dd5f/27f19e9cf9ae4ecabdabeb4999863a1b/FLAG6de12f324 [2024-11-16 23:34:06,548 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36804dd5f/27f19e9cf9ae4ecabdabeb4999863a1b [2024-11-16 23:34:06,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 23:34:06,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 23:34:06,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 23:34:06,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 23:34:06,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 23:34:06,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:34:06" (1/1) ... [2024-11-16 23:34:06,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d4460c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:06, skipping insertion in model container [2024-11-16 23:34:06,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:34:06" (1/1) ... [2024-11-16 23:34:06,603 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 23:34:07,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:34:07,109 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 23:34:07,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:34:07,244 INFO L204 MainTranslator]: Completed translation [2024-11-16 23:34:07,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07 WrapperNode [2024-11-16 23:34:07,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 23:34:07,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 23:34:07,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 23:34:07,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 23:34:07,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,328 INFO L138 Inliner]: procedures = 223, calls = 39, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 219 [2024-11-16 23:34:07,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 23:34:07,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 23:34:07,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 23:34:07,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 23:34:07,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,373 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 23:34:07,384 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 23:34:07,384 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 23:34:07,384 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 23:34:07,385 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (1/1) ... [2024-11-16 23:34:07,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:34:07,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:34:07,448 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) [2024-11-16 23:34:07,453 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 [2024-11-16 23:34:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2024-11-16 23:34:07,504 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2024-11-16 23:34:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 23:34:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 23:34:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-16 23:34:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-16 23:34:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 23:34:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-16 23:34:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 23:34:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 23:34:07,508 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 23:34:07,657 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 23:34:07,659 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 23:34:07,983 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L820: havoc ring_empty_#t~mem15#1; [2024-11-16 23:34:07,984 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L820-1: havoc ring_empty_#t~mem14#1; [2024-11-16 23:34:07,985 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L820-18: havoc ring_empty_#t~mem15#1; [2024-11-16 23:34:07,985 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L820-19: havoc ring_empty_#t~mem14#1; [2024-11-16 23:34:08,180 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 23:34:08,182 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 23:34:08,209 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 23:34:08,209 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 23:34:08,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:34:08 BoogieIcfgContainer [2024-11-16 23:34:08,209 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 23:34:08,213 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 23:34:08,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 23:34:08,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 23:34:08,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:34:06" (1/3) ... [2024-11-16 23:34:08,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a2cd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:34:08, skipping insertion in model container [2024-11-16 23:34:08,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07" (2/3) ... [2024-11-16 23:34:08,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a2cd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:34:08, skipping insertion in model container [2024-11-16 23:34:08,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:34:08" (3/3) ... [2024-11-16 23:34:08,222 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2024-11-16 23:34:08,237 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 23:34:08,238 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-16 23:34:08,238 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 23:34:08,360 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-16 23:34:08,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 269 transitions, 545 flow [2024-11-16 23:34:08,530 INFO L124 PetriNetUnfolderBase]: 13/268 cut-off events. [2024-11-16 23:34:08,530 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 23:34:08,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 268 events. 13/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 568 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2024-11-16 23:34:08,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 269 transitions, 545 flow [2024-11-16 23:34:08,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 262 transitions, 527 flow [2024-11-16 23:34:08,575 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:34:08,583 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;@319220c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:34:08,586 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-16 23:34:08,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:34:08,597 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-11-16 23:34:08,597 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:34:08,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:08,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:34:08,599 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:08,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:08,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1747323771, now seen corresponding path program 1 times [2024-11-16 23:34:08,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:08,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79944323] [2024-11-16 23:34:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:08,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:34:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:34:09,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:34:09,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79944323] [2024-11-16 23:34:09,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79944323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:34:09,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:34:09,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:34:09,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105642129] [2024-11-16 23:34:09,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:34:09,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:34:09,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:34:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:34:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:34:09,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 269 [2024-11-16 23:34:09,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 262 transitions, 527 flow. Second operand has 6 states, 6 states have (on average 192.33333333333334) internal successors, (1154), 6 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:09,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:34:09,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 269 [2024-11-16 23:34:09,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:34:10,575 INFO L124 PetriNetUnfolderBase]: 927/4356 cut-off events. [2024-11-16 23:34:10,575 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 23:34:10,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6097 conditions, 4356 events. 927/4356 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 34810 event pairs, 768 based on Foata normal form. 397/4339 useless extension candidates. Maximal degree in co-relation 6038. Up to 1732 conditions per place. [2024-11-16 23:34:10,606 INFO L140 encePairwiseOnDemand]: 254/269 looper letters, 62 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2024-11-16 23:34:10,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 249 transitions, 635 flow [2024-11-16 23:34:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:34:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:34:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1223 transitions. [2024-11-16 23:34:10,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7577447335811648 [2024-11-16 23:34:10,629 INFO L175 Difference]: Start difference. First operand has 253 places, 262 transitions, 527 flow. Second operand 6 states and 1223 transitions. [2024-11-16 23:34:10,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 249 transitions, 635 flow [2024-11-16 23:34:10,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 249 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:34:10,639 INFO L231 Difference]: Finished difference. Result has 253 places, 249 transitions, 510 flow [2024-11-16 23:34:10,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=510, PETRI_PLACES=253, PETRI_TRANSITIONS=249} [2024-11-16 23:34:10,644 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 0 predicate places. [2024-11-16 23:34:10,645 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 249 transitions, 510 flow [2024-11-16 23:34:10,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.33333333333334) internal successors, (1154), 6 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:10,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:10,646 INFO L204 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] [2024-11-16 23:34:10,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 23:34:10,647 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:10,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:10,648 INFO L85 PathProgramCache]: Analyzing trace with hash 287866793, now seen corresponding path program 1 times [2024-11-16 23:34:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:10,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986200721] [2024-11-16 23:34:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:34:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:34:11,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:34:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986200721] [2024-11-16 23:34:11,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986200721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:34:11,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:34:11,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:34:11,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008879280] [2024-11-16 23:34:11,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:34:11,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:34:11,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:34:11,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:34:11,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:34:11,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 269 [2024-11-16 23:34:11,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 249 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 192.33333333333334) internal successors, (1154), 6 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:11,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:34:11,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 269 [2024-11-16 23:34:11,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:34:11,922 INFO L124 PetriNetUnfolderBase]: 927/4355 cut-off events. [2024-11-16 23:34:11,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:34:11,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6101 conditions, 4355 events. 927/4355 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 34750 event pairs, 768 based on Foata normal form. 0/3942 useless extension candidates. Maximal degree in co-relation 6050. Up to 1732 conditions per place. [2024-11-16 23:34:11,946 INFO L140 encePairwiseOnDemand]: 263/269 looper letters, 62 selfloop transitions, 5 changer transitions 0/248 dead transitions. [2024-11-16 23:34:11,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 248 transitions, 642 flow [2024-11-16 23:34:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:34:11,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:34:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1214 transitions. [2024-11-16 23:34:11,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7521685254027262 [2024-11-16 23:34:11,951 INFO L175 Difference]: Start difference. First operand has 253 places, 249 transitions, 510 flow. Second operand 6 states and 1214 transitions. [2024-11-16 23:34:11,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 248 transitions, 642 flow [2024-11-16 23:34:11,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 248 transitions, 632 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:34:11,960 INFO L231 Difference]: Finished difference. Result has 252 places, 248 transitions, 508 flow [2024-11-16 23:34:11,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2024-11-16 23:34:11,961 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -1 predicate places. [2024-11-16 23:34:11,961 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 508 flow [2024-11-16 23:34:11,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.33333333333334) internal successors, (1154), 6 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:11,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:11,963 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:34:11,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 23:34:11,964 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting reader_fnErr7ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:11,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:11,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1018648891, now seen corresponding path program 1 times [2024-11-16 23:34:11,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:11,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560393892] [2024-11-16 23:34:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:11,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:34:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:34:12,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:34:12,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560393892] [2024-11-16 23:34:12,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560393892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:34:12,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:34:12,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:34:12,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979180925] [2024-11-16 23:34:12,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:34:12,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:34:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:34:12,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:34:12,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:34:12,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 269 [2024-11-16 23:34:12,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 508 flow. Second operand has 6 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:12,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:34:12,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 269 [2024-11-16 23:34:12,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:34:13,356 INFO L124 PetriNetUnfolderBase]: 329/2434 cut-off events. [2024-11-16 23:34:13,357 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 23:34:13,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 2434 events. 329/2434 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18058 event pairs, 94 based on Foata normal form. 0/2166 useless extension candidates. Maximal degree in co-relation 2991. Up to 494 conditions per place. [2024-11-16 23:34:13,371 INFO L140 encePairwiseOnDemand]: 247/269 looper letters, 37 selfloop transitions, 44 changer transitions 0/290 dead transitions. [2024-11-16 23:34:13,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 290 transitions, 754 flow [2024-11-16 23:34:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:34:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:34:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1403 transitions. [2024-11-16 23:34:13,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.869268897149938 [2024-11-16 23:34:13,375 INFO L175 Difference]: Start difference. First operand has 252 places, 248 transitions, 508 flow. Second operand 6 states and 1403 transitions. [2024-11-16 23:34:13,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 290 transitions, 754 flow [2024-11-16 23:34:13,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 290 transitions, 744 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:34:13,384 INFO L231 Difference]: Finished difference. Result has 257 places, 290 transitions, 798 flow [2024-11-16 23:34:13,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=798, PETRI_PLACES=257, PETRI_TRANSITIONS=290} [2024-11-16 23:34:13,387 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 4 predicate places. [2024-11-16 23:34:13,387 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 290 transitions, 798 flow [2024-11-16 23:34:13,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:13,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:13,389 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:34:13,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 23:34:13,390 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:13,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash -219117127, now seen corresponding path program 1 times [2024-11-16 23:34:13,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:13,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116198430] [2024-11-16 23:34:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:34:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:34:13,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:34:13,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116198430] [2024-11-16 23:34:13,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116198430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:34:13,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:34:13,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:34:13,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531143374] [2024-11-16 23:34:13,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:34:13,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:34:13,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:34:13,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:34:13,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:34:14,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 269 [2024-11-16 23:34:14,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 290 transitions, 798 flow. Second operand has 6 states, 6 states have (on average 218.66666666666666) internal successors, (1312), 6 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:14,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:34:14,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 269 [2024-11-16 23:34:14,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:34:14,948 INFO L124 PetriNetUnfolderBase]: 499/4534 cut-off events. [2024-11-16 23:34:14,949 INFO L125 PetriNetUnfolderBase]: For 534/700 co-relation queries the response was YES. [2024-11-16 23:34:14,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6654 conditions, 4534 events. 499/4534 cut-off events. For 534/700 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 38623 event pairs, 73 based on Foata normal form. 68/4226 useless extension candidates. Maximal degree in co-relation 6594. Up to 613 conditions per place. [2024-11-16 23:34:14,987 INFO L140 encePairwiseOnDemand]: 245/269 looper letters, 80 selfloop transitions, 41 changer transitions 0/336 dead transitions. [2024-11-16 23:34:14,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 336 transitions, 1168 flow [2024-11-16 23:34:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:34:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:34:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1380 transitions. [2024-11-16 23:34:14,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8550185873605948 [2024-11-16 23:34:14,991 INFO L175 Difference]: Start difference. First operand has 257 places, 290 transitions, 798 flow. Second operand 6 states and 1380 transitions. [2024-11-16 23:34:14,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 336 transitions, 1168 flow [2024-11-16 23:34:15,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 336 transitions, 1168 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 23:34:15,047 INFO L231 Difference]: Finished difference. Result has 267 places, 330 transitions, 1140 flow [2024-11-16 23:34:15,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1140, PETRI_PLACES=267, PETRI_TRANSITIONS=330} [2024-11-16 23:34:15,049 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 14 predicate places. [2024-11-16 23:34:15,049 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 330 transitions, 1140 flow [2024-11-16 23:34:15,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 218.66666666666666) internal successors, (1312), 6 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:15,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:15,051 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:34:15,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 23:34:15,051 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting reader_fnErr6ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:15,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:15,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1511939806, now seen corresponding path program 1 times [2024-11-16 23:34:15,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:15,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849385011] [2024-11-16 23:34:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:15,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:34:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:34:15,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:34:15,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849385011] [2024-11-16 23:34:15,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849385011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:34:15,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:34:15,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:34:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680905627] [2024-11-16 23:34:15,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:34:15,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:34:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:34:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:34:15,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:34:16,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 269 [2024-11-16 23:34:16,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 330 transitions, 1140 flow. Second operand has 6 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:16,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:34:16,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 269 [2024-11-16 23:34:16,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:34:16,773 INFO L124 PetriNetUnfolderBase]: 768/5409 cut-off events. [2024-11-16 23:34:16,773 INFO L125 PetriNetUnfolderBase]: For 2837/3397 co-relation queries the response was YES. [2024-11-16 23:34:16,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9719 conditions, 5409 events. 768/5409 cut-off events. For 2837/3397 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 47033 event pairs, 80 based on Foata normal form. 106/5134 useless extension candidates. Maximal degree in co-relation 9654. Up to 1018 conditions per place. [2024-11-16 23:34:16,821 INFO L140 encePairwiseOnDemand]: 247/269 looper letters, 95 selfloop transitions, 86 changer transitions 0/412 dead transitions. [2024-11-16 23:34:16,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 412 transitions, 1974 flow [2024-11-16 23:34:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:34:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:34:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1403 transitions. [2024-11-16 23:34:16,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.869268897149938 [2024-11-16 23:34:16,826 INFO L175 Difference]: Start difference. First operand has 267 places, 330 transitions, 1140 flow. Second operand 6 states and 1403 transitions. [2024-11-16 23:34:16,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 412 transitions, 1974 flow [2024-11-16 23:34:16,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 412 transitions, 1974 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 23:34:16,845 INFO L231 Difference]: Finished difference. Result has 277 places, 412 transitions, 2016 flow [2024-11-16 23:34:16,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2016, PETRI_PLACES=277, PETRI_TRANSITIONS=412} [2024-11-16 23:34:16,847 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 24 predicate places. [2024-11-16 23:34:16,847 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 412 transitions, 2016 flow [2024-11-16 23:34:16,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:16,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:16,849 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:34:16,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 23:34:16,849 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:16,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:16,850 INFO L85 PathProgramCache]: Analyzing trace with hash 9376711, now seen corresponding path program 1 times [2024-11-16 23:34:16,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:16,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193811661] [2024-11-16 23:34:16,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:16,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:34:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:34:17,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:34:17,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193811661] [2024-11-16 23:34:17,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193811661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:34:17,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:34:17,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:34:17,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451180560] [2024-11-16 23:34:17,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:34:17,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:34:17,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:34:17,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:34:17,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:34:17,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 269 [2024-11-16 23:34:17,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 412 transitions, 2016 flow. Second operand has 6 states, 6 states have (on average 235.66666666666666) internal successors, (1414), 6 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:17,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:34:17,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 269 [2024-11-16 23:34:17,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:34:18,563 INFO L124 PetriNetUnfolderBase]: 886/6159 cut-off events. [2024-11-16 23:34:18,564 INFO L125 PetriNetUnfolderBase]: For 5206/6103 co-relation queries the response was YES. [2024-11-16 23:34:18,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12142 conditions, 6159 events. 886/6159 cut-off events. For 5206/6103 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 55883 event pairs, 48 based on Foata normal form. 237/6012 useless extension candidates. Maximal degree in co-relation 12072. Up to 704 conditions per place. [2024-11-16 23:34:18,678 INFO L140 encePairwiseOnDemand]: 258/269 looper letters, 98 selfloop transitions, 62 changer transitions 0/473 dead transitions. [2024-11-16 23:34:18,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 473 transitions, 2692 flow [2024-11-16 23:34:18,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:34:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:34:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1450 transitions. [2024-11-16 23:34:18,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8983890954151177 [2024-11-16 23:34:18,683 INFO L175 Difference]: Start difference. First operand has 277 places, 412 transitions, 2016 flow. Second operand 6 states and 1450 transitions. [2024-11-16 23:34:18,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 473 transitions, 2692 flow [2024-11-16 23:34:18,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 473 transitions, 2692 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 23:34:18,706 INFO L231 Difference]: Finished difference. Result has 287 places, 470 transitions, 2684 flow [2024-11-16 23:34:18,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2684, PETRI_PLACES=287, PETRI_TRANSITIONS=470} [2024-11-16 23:34:18,709 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 34 predicate places. [2024-11-16 23:34:18,709 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 470 transitions, 2684 flow [2024-11-16 23:34:18,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.66666666666666) internal successors, (1414), 6 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:18,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:18,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:34:18,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 23:34:18,712 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting reader_fnErr5ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:18,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1415336748, now seen corresponding path program 1 times [2024-11-16 23:34:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:18,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138856745] [2024-11-16 23:34:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:18,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:34:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:34:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:34:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138856745] [2024-11-16 23:34:19,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138856745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:34:19,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:34:19,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:34:19,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833517227] [2024-11-16 23:34:19,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:34:19,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:34:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:34:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:34:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:34:19,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 269 [2024-11-16 23:34:19,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 470 transitions, 2684 flow. Second operand has 6 states, 6 states have (on average 224.66666666666666) internal successors, (1348), 6 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:19,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:34:19,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 269 [2024-11-16 23:34:19,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:34:20,472 INFO L124 PetriNetUnfolderBase]: 1111/7413 cut-off events. [2024-11-16 23:34:20,472 INFO L125 PetriNetUnfolderBase]: For 9900/10747 co-relation queries the response was YES. [2024-11-16 23:34:20,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16095 conditions, 7413 events. 1111/7413 cut-off events. For 9900/10747 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 71516 event pairs, 80 based on Foata normal form. 150/7182 useless extension candidates. Maximal degree in co-relation 16020. Up to 1306 conditions per place. [2024-11-16 23:34:20,530 INFO L140 encePairwiseOnDemand]: 248/269 looper letters, 215 selfloop transitions, 70 changer transitions 0/535 dead transitions. [2024-11-16 23:34:20,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 535 transitions, 3692 flow [2024-11-16 23:34:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:34:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:34:20,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1416 transitions. [2024-11-16 23:34:20,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8773234200743495 [2024-11-16 23:34:20,534 INFO L175 Difference]: Start difference. First operand has 287 places, 470 transitions, 2684 flow. Second operand 6 states and 1416 transitions. [2024-11-16 23:34:20,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 535 transitions, 3692 flow [2024-11-16 23:34:20,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 535 transitions, 3692 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 23:34:20,573 INFO L231 Difference]: Finished difference. Result has 297 places, 532 transitions, 3458 flow [2024-11-16 23:34:20,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2684, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3458, PETRI_PLACES=297, PETRI_TRANSITIONS=532} [2024-11-16 23:34:20,576 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 44 predicate places. [2024-11-16 23:34:20,576 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 532 transitions, 3458 flow [2024-11-16 23:34:20,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.66666666666666) internal successors, (1348), 6 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:20,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:20,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:34:20,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 23:34:20,577 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:20,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1232002947, now seen corresponding path program 1 times [2024-11-16 23:34:20,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:20,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220691950] [2024-11-16 23:34:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:20,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:34:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:34:21,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:34:21,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220691950] [2024-11-16 23:34:21,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220691950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:34:21,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:34:21,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:34:21,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919545416] [2024-11-16 23:34:21,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:34:21,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:34:21,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:34:21,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:34:21,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:34:21,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 269 [2024-11-16 23:34:21,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 532 transitions, 3458 flow. Second operand has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:21,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:34:21,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 269 [2024-11-16 23:34:21,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:34:24,062 INFO L124 PetriNetUnfolderBase]: 4607/15377 cut-off events. [2024-11-16 23:34:24,062 INFO L125 PetriNetUnfolderBase]: For 17880/18016 co-relation queries the response was YES. [2024-11-16 23:34:24,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41049 conditions, 15377 events. 4607/15377 cut-off events. For 17880/18016 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 141731 event pairs, 2055 based on Foata normal form. 40/14649 useless extension candidates. Maximal degree in co-relation 40969. Up to 8620 conditions per place. [2024-11-16 23:34:24,173 INFO L140 encePairwiseOnDemand]: 230/269 looper letters, 301 selfloop transitions, 208 changer transitions 0/697 dead transitions. [2024-11-16 23:34:24,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 697 transitions, 5302 flow [2024-11-16 23:34:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:34:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:34:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1318 transitions. [2024-11-16 23:34:24,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8166047087980174 [2024-11-16 23:34:24,178 INFO L175 Difference]: Start difference. First operand has 297 places, 532 transitions, 3458 flow. Second operand 6 states and 1318 transitions. [2024-11-16 23:34:24,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 697 transitions, 5302 flow [2024-11-16 23:34:24,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 697 transitions, 5130 flow, removed 86 selfloop flow, removed 0 redundant places. [2024-11-16 23:34:24,273 INFO L231 Difference]: Finished difference. Result has 307 places, 697 transitions, 5078 flow [2024-11-16 23:34:24,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5078, PETRI_PLACES=307, PETRI_TRANSITIONS=697} [2024-11-16 23:34:24,277 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 54 predicate places. [2024-11-16 23:34:24,277 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 697 transitions, 5078 flow [2024-11-16 23:34:24,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:24,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:24,279 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:34:24,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 23:34:24,282 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reader_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:24,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:24,283 INFO L85 PathProgramCache]: Analyzing trace with hash -826772297, now seen corresponding path program 1 times [2024-11-16 23:34:24,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:24,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329396113] [2024-11-16 23:34:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:24,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:34:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:34:24,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:34:24,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329396113] [2024-11-16 23:34:24,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329396113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:34:24,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:34:24,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:34:24,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707834880] [2024-11-16 23:34:24,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:34:24,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:34:24,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:34:24,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:34:24,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:34:25,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 269 [2024-11-16 23:34:25,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 697 transitions, 5078 flow. Second operand has 6 states, 6 states have (on average 229.83333333333334) internal successors, (1379), 6 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:25,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:34:25,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 269 [2024-11-16 23:34:25,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:34:26,706 INFO L124 PetriNetUnfolderBase]: 1699/9233 cut-off events. [2024-11-16 23:34:26,706 INFO L125 PetriNetUnfolderBase]: For 21773/23589 co-relation queries the response was YES. [2024-11-16 23:34:26,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24382 conditions, 9233 events. 1699/9233 cut-off events. For 21773/23589 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 90176 event pairs, 101 based on Foata normal form. 237/9073 useless extension candidates. Maximal degree in co-relation 24297. Up to 1688 conditions per place. [2024-11-16 23:34:26,780 INFO L140 encePairwiseOnDemand]: 254/269 looper letters, 311 selfloop transitions, 92 changer transitions 0/784 dead transitions. [2024-11-16 23:34:26,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 784 transitions, 6722 flow [2024-11-16 23:34:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:34:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:34:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1432 transitions. [2024-11-16 23:34:26,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8872366790582404 [2024-11-16 23:34:26,785 INFO L175 Difference]: Start difference. First operand has 307 places, 697 transitions, 5078 flow. Second operand 6 states and 1432 transitions. [2024-11-16 23:34:26,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 784 transitions, 6722 flow [2024-11-16 23:34:26,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 784 transitions, 6534 flow, removed 94 selfloop flow, removed 0 redundant places. [2024-11-16 23:34:26,880 INFO L231 Difference]: Finished difference. Result has 317 places, 784 transitions, 6158 flow [2024-11-16 23:34:26,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=4890, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6158, PETRI_PLACES=317, PETRI_TRANSITIONS=784} [2024-11-16 23:34:26,881 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 64 predicate places. [2024-11-16 23:34:26,881 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 784 transitions, 6158 flow [2024-11-16 23:34:26,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.83333333333334) internal successors, (1379), 6 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:26,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:26,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:34:26,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 23:34:26,883 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr7ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:26,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash -995140477, now seen corresponding path program 1 times [2024-11-16 23:34:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:26,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121024721] [2024-11-16 23:34:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:26,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:34:31,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:34:31,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:34:31,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121024721] [2024-11-16 23:34:31,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121024721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:34:31,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:34:31,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2024-11-16 23:34:31,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645980528] [2024-11-16 23:34:31,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:34:31,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 23:34:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:34:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 23:34:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 23:34:39,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 269 [2024-11-16 23:34:39,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 784 transitions, 6158 flow. Second operand has 33 states, 33 states have (on average 131.78787878787878) internal successors, (4349), 33 states have internal predecessors, (4349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:39,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:34:39,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 269 [2024-11-16 23:34:39,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:34:57,742 INFO L124 PetriNetUnfolderBase]: 20091/51419 cut-off events. [2024-11-16 23:34:57,742 INFO L125 PetriNetUnfolderBase]: For 92869/93171 co-relation queries the response was YES. [2024-11-16 23:34:58,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163714 conditions, 51419 events. 20091/51419 cut-off events. For 92869/93171 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 513900 event pairs, 5545 based on Foata normal form. 259/50121 useless extension candidates. Maximal degree in co-relation 163615. Up to 19685 conditions per place. [2024-11-16 23:34:58,440 INFO L140 encePairwiseOnDemand]: 203/269 looper letters, 2159 selfloop transitions, 341 changer transitions 24/2650 dead transitions. [2024-11-16 23:34:58,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 2650 transitions, 24398 flow [2024-11-16 23:34:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-16 23:34:58,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-16 23:34:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6569 transitions. [2024-11-16 23:34:58,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58143034165339 [2024-11-16 23:34:58,460 INFO L175 Difference]: Start difference. First operand has 317 places, 784 transitions, 6158 flow. Second operand 42 states and 6569 transitions. [2024-11-16 23:34:58,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 2650 transitions, 24398 flow [2024-11-16 23:34:59,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 2650 transitions, 24078 flow, removed 160 selfloop flow, removed 0 redundant places. [2024-11-16 23:34:59,175 INFO L231 Difference]: Finished difference. Result has 392 places, 1120 transitions, 10548 flow [2024-11-16 23:34:59,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=5982, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=10548, PETRI_PLACES=392, PETRI_TRANSITIONS=1120} [2024-11-16 23:34:59,176 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 139 predicate places. [2024-11-16 23:34:59,176 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 1120 transitions, 10548 flow [2024-11-16 23:34:59,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 131.78787878787878) internal successors, (4349), 33 states have internal predecessors, (4349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:34:59,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:34:59,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:34:59,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 23:34:59,178 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting reader_fnErr7ASSERT_VIOLATIONDATA_RACE === [reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:34:59,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:34:59,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1399180987, now seen corresponding path program 2 times [2024-11-16 23:34:59,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:34:59,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247435030] [2024-11-16 23:34:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:34:59,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:34:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:35:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:35:00,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:35:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247435030] [2024-11-16 23:35:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247435030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:35:00,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:35:00,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-16 23:35:00,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630439365] [2024-11-16 23:35:00,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:35:00,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 23:35:00,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:35:00,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 23:35:00,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2024-11-16 23:35:08,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 269 [2024-11-16 23:35:08,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 1120 transitions, 10548 flow. Second operand has 26 states, 26 states have (on average 174.8846153846154) internal successors, (4547), 26 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:35:08,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:35:08,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 269 [2024-11-16 23:35:08,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand