./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.c -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 54c191cc49564ce4d296e5a7e73974f46b5dd8879e46f53896db0afd8c391b87 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:08:03,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:08:03,553 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-04-29 11:08:03,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:08:03,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:08:03,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:08:03,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:08:03,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:08:03,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:08:03,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:08:03,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:08:03,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:08:03,573 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:08:03,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:08:03,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:08:03,575 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:08:03,575 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:08:03,575 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:08:03,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:08:03,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:08:03,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:08:03,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:08:03,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:08:03,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:08:03,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:08:03,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:08:03,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:08:03,576 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:08:03,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:08:03,576 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:08:03,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:08:03,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:08:03,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:08:03,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:08:03,576 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54c191cc49564ce4d296e5a7e73974f46b5dd8879e46f53896db0afd8c391b87 [2025-04-29 11:08:03,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:08:03,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:08:03,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:08:03,818 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:08:03,818 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:08:03,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.c [2025-04-29 11:08:05,214 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d116340d/9c5d274a073842f6be3b064d4aa7c4e2/FLAG31f423e07 [2025-04-29 11:08:05,446 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:08:05,447 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.c [2025-04-29 11:08:05,448 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:08:05,456 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d116340d/9c5d274a073842f6be3b064d4aa7c4e2/FLAG31f423e07 [2025-04-29 11:08:06,265 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d116340d/9c5d274a073842f6be3b064d4aa7c4e2 [2025-04-29 11:08:06,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:08:06,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:08:06,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:08:06,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:08:06,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:08:06,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2862efc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06, skipping insertion in model container [2025-04-29 11:08:06,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:08:06,446 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:08:06,461 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:08:06,484 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:08:06,495 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:08:06,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06 WrapperNode [2025-04-29 11:08:06,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:08:06,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:08:06,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:08:06,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:08:06,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,526 INFO L138 Inliner]: procedures = 11, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2025-04-29 11:08:06,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:08:06,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:08:06,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:08:06,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:08:06,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,541 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,542 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:08:06,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:08:06,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:08:06,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:08:06,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:08:06,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:08:06,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-29 11:08:06,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-29 11:08:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-29 11:08:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 11:08:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-29 11:08:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-29 11:08:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:08:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:08:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-29 11:08:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-29 11:08:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-29 11:08:06,599 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-29 11:08:06,652 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:08:06,653 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:08:06,781 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:08:06,781 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:08:06,799 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:08:06,799 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:08:06,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:08:06 BoogieIcfgContainer [2025-04-29 11:08:06,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:08:06,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:08:06,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:08:06,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:08:06,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:08:06" (1/3) ... [2025-04-29 11:08:06,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26154696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:08:06, skipping insertion in model container [2025-04-29 11:08:06,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (2/3) ... [2025-04-29 11:08:06,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26154696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:08:06, skipping insertion in model container [2025-04-29 11:08:06,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:08:06" (3/3) ... [2025-04-29 11:08:06,806 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_22-deref_read.c [2025-04-29 11:08:06,818 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:08:06,820 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_22-deref_read.c that has 2 procedures, 69 locations, 67 edges, 1 initial locations, 0 loop locations, and 6 error locations. [2025-04-29 11:08:06,820 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:08:06,868 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-29 11:08:06,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 68 transitions, 140 flow [2025-04-29 11:08:06,938 INFO L116 PetriNetUnfolderBase]: 0/67 cut-off events. [2025-04-29 11:08:06,940 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:08:06,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 67 events. 0/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-29 11:08:06,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 68 transitions, 140 flow [2025-04-29 11:08:06,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 67 transitions, 137 flow [2025-04-29 11:08:06,956 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:08:06,964 INFO L340 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;@45b56108, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:08:06,964 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-04-29 11:08:06,971 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:08:06,971 INFO L116 PetriNetUnfolderBase]: 0/23 cut-off events. [2025-04-29 11:08:06,971 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:08:06,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:06,972 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:08:06,972 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-04-29 11:08:06,978 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:06,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1375076702, now seen corresponding path program 1 times [2025-04-29 11:08:06,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:06,984 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696912786] [2025-04-29 11:08:06,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:06,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:07,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-29 11:08:07,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-29 11:08:07,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:07,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:08:07,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:07,126 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696912786] [2025-04-29 11:08:07,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696912786] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:07,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:07,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:08:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935889831] [2025-04-29 11:08:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:07,133 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:08:07,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:07,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:08:07,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:08:07,173 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2025-04-29 11:08:07,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:07,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2025-04-29 11:08:07,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:07,234 INFO L116 PetriNetUnfolderBase]: 16/169 cut-off events. [2025-04-29 11:08:07,234 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-29 11:08:07,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 169 events. 16/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 550 event pairs, 9 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 192. Up to 39 conditions per place. [2025-04-29 11:08:07,238 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 10 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2025-04-29 11:08:07,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 163 flow [2025-04-29 11:08:07,239 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:08:07,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:08:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2025-04-29 11:08:07,248 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.9068627450980392 [2025-04-29 11:08:07,249 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 137 flow. Second operand 3 states and 185 transitions. [2025-04-29 11:08:07,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 163 flow [2025-04-29 11:08:07,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:08:07,260 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 146 flow [2025-04-29 11:08:07,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2025-04-29 11:08:07,264 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 0 predicate places. [2025-04-29 11:08:07,264 INFO L485 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 146 flow [2025-04-29 11:08:07,265 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:07,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:08:07,266 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:08:07,266 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-04-29 11:08:07,267 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2054516333, now seen corresponding path program 1 times [2025-04-29 11:08:07,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:07,267 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486690495] [2025-04-29 11:08:07,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:07,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:07,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-29 11:08:07,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-29 11:08:07,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:07,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:08:07,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:07,309 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486690495] [2025-04-29 11:08:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486690495] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:07,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:07,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:08:07,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231599943] [2025-04-29 11:08:07,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:07,311 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:08:07,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:07,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:08:07,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:08:07,332 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2025-04-29 11:08:07,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:07,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2025-04-29 11:08:07,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:07,382 INFO L116 PetriNetUnfolderBase]: 17/159 cut-off events. [2025-04-29 11:08:07,382 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:08:07,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 159 events. 17/159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 503 event pairs, 12 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 192. Up to 36 conditions per place. [2025-04-29 11:08:07,386 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 12 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2025-04-29 11:08:07,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 176 flow [2025-04-29 11:08:07,386 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:08:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:08:07,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2025-04-29 11:08:07,388 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2025-04-29 11:08:07,389 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 146 flow. Second operand 3 states and 180 transitions. [2025-04-29 11:08:07,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 176 flow [2025-04-29 11:08:07,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-29 11:08:07,392 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 148 flow [2025-04-29 11:08:07,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2025-04-29 11:08:07,392 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2025-04-29 11:08:07,393 INFO L485 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 148 flow [2025-04-29 11:08:07,393 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:07,393 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:08:07,393 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:08:07,393 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-04-29 11:08:07,393 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash 771001839, now seen corresponding path program 1 times [2025-04-29 11:08:07,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:07,394 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636434253] [2025-04-29 11:08:07,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:07,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:07,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-29 11:08:07,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-29 11:08:07,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:07,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:08:07,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:07,831 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636434253] [2025-04-29 11:08:07,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636434253] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:07,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:07,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-29 11:08:07,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589485942] [2025-04-29 11:08:07,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:07,833 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:08:07,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:07,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:08:07,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:08:07,894 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 68 [2025-04-29 11:08:07,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:07,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 68 [2025-04-29 11:08:07,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:08,025 INFO L116 PetriNetUnfolderBase]: 79/326 cut-off events. [2025-04-29 11:08:08,025 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:08:08,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 326 events. 79/326 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1459 event pairs, 25 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 504. Up to 133 conditions per place. [2025-04-29 11:08:08,027 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 21 selfloop transitions, 22 changer transitions 4/95 dead transitions. [2025-04-29 11:08:08,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 300 flow [2025-04-29 11:08:08,028 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:08:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-29 11:08:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 348 transitions. [2025-04-29 11:08:08,032 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2025-04-29 11:08:08,032 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 148 flow. Second operand 6 states and 348 transitions. [2025-04-29 11:08:08,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 300 flow [2025-04-29 11:08:08,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:08:08,033 INFO L231 Difference]: Finished difference. Result has 80 places, 87 transitions, 294 flow [2025-04-29 11:08:08,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=80, PETRI_TRANSITIONS=87} [2025-04-29 11:08:08,035 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2025-04-29 11:08:08,035 INFO L485 AbstractCegarLoop]: Abstraction has has 80 places, 87 transitions, 294 flow [2025-04-29 11:08:08,036 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:08,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:08,036 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:08:08,036 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:08:08,036 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-04-29 11:08:08,036 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1034381886, now seen corresponding path program 1 times [2025-04-29 11:08:08,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:08,037 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016932348] [2025-04-29 11:08:08,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:08,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:08,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-04-29 11:08:08,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-04-29 11:08:08,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:08,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:08:08,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:08,060 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016932348] [2025-04-29 11:08:08,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016932348] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:08,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:08,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:08:08,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539511683] [2025-04-29 11:08:08,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:08,062 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:08:08,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:08,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:08:08,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:08:08,069 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 68 [2025-04-29 11:08:08,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:08,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:08,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 68 [2025-04-29 11:08:08,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:08,114 INFO L116 PetriNetUnfolderBase]: 50/294 cut-off events. [2025-04-29 11:08:08,114 INFO L117 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-04-29 11:08:08,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 294 events. 50/294 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1229 event pairs, 8 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 506. Up to 60 conditions per place. [2025-04-29 11:08:08,131 INFO L140 encePairwiseOnDemand]: 66/68 looper letters, 9 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2025-04-29 11:08:08,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 316 flow [2025-04-29 11:08:08,132 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:08:08,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:08:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2025-04-29 11:08:08,133 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.9215686274509803 [2025-04-29 11:08:08,134 INFO L175 Difference]: Start difference. First operand has 80 places, 87 transitions, 294 flow. Second operand 3 states and 188 transitions. [2025-04-29 11:08:08,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 316 flow [2025-04-29 11:08:08,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-29 11:08:08,136 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 294 flow [2025-04-29 11:08:08,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2025-04-29 11:08:08,137 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2025-04-29 11:08:08,137 INFO L485 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 294 flow [2025-04-29 11:08:08,137 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:08,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:08,138 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:08:08,138 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:08:08,138 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-04-29 11:08:08,138 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:08,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1748391852, now seen corresponding path program 1 times [2025-04-29 11:08:08,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:08,139 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895230733] [2025-04-29 11:08:08,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:08,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:08,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-29 11:08:08,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-29 11:08:08,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:08,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:08:08,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:08,351 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895230733] [2025-04-29 11:08:08,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895230733] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:08,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:08,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-29 11:08:08,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364144650] [2025-04-29 11:08:08,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:08,352 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:08:08,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:08,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:08:08,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:08:08,399 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 68 [2025-04-29 11:08:08,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:08,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:08,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 68 [2025-04-29 11:08:08,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:08,521 INFO L116 PetriNetUnfolderBase]: 138/481 cut-off events. [2025-04-29 11:08:08,522 INFO L117 PetriNetUnfolderBase]: For 146/168 co-relation queries the response was YES. [2025-04-29 11:08:08,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 481 events. 138/481 cut-off events. For 146/168 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2405 event pairs, 37 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 1094. Up to 235 conditions per place. [2025-04-29 11:08:08,526 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 39 selfloop transitions, 29 changer transitions 7/121 dead transitions. [2025-04-29 11:08:08,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 121 transitions, 584 flow [2025-04-29 11:08:08,526 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:08:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-29 11:08:08,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2025-04-29 11:08:08,528 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.8161764705882353 [2025-04-29 11:08:08,528 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 294 flow. Second operand 6 states and 333 transitions. [2025-04-29 11:08:08,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 121 transitions, 584 flow [2025-04-29 11:08:08,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 121 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:08:08,535 INFO L231 Difference]: Finished difference. Result has 90 places, 110 transitions, 547 flow [2025-04-29 11:08:08,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=90, PETRI_TRANSITIONS=110} [2025-04-29 11:08:08,536 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2025-04-29 11:08:08,536 INFO L485 AbstractCegarLoop]: Abstraction has has 90 places, 110 transitions, 547 flow [2025-04-29 11:08:08,536 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:08,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:08,537 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:08:08,537 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-29 11:08:08,537 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-04-29 11:08:08,537 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:08,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2027591920, now seen corresponding path program 1 times [2025-04-29 11:08:08,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:08,539 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138597913] [2025-04-29 11:08:08,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:08,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:08,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-29 11:08:08,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-29 11:08:08,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:08,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:08:08,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:08,627 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138597913] [2025-04-29 11:08:08,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138597913] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:08,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:08,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:08:08,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598667776] [2025-04-29 11:08:08,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:08,628 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:08:08,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:08,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:08:08,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:08:08,635 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 68 [2025-04-29 11:08:08,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 547 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:08,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:08,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 68 [2025-04-29 11:08:08,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:08,656 INFO L116 PetriNetUnfolderBase]: 2/105 cut-off events. [2025-04-29 11:08:08,656 INFO L117 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-04-29 11:08:08,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 105 events. 2/105 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 1 based on Foata normal form. 2/107 useless extension candidates. Maximal degree in co-relation 181. Up to 12 conditions per place. [2025-04-29 11:08:08,657 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2025-04-29 11:08:08,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 63 transitions, 211 flow [2025-04-29 11:08:08,657 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:08:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:08:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2025-04-29 11:08:08,658 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.9509803921568627 [2025-04-29 11:08:08,658 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 547 flow. Second operand 3 states and 194 transitions. [2025-04-29 11:08:08,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 63 transitions, 211 flow [2025-04-29 11:08:08,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 151 flow, removed 10 selfloop flow, removed 20 redundant places. [2025-04-29 11:08:08,660 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2025-04-29 11:08:08,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2025-04-29 11:08:08,660 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2025-04-29 11:08:08,660 INFO L485 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2025-04-29 11:08:08,660 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:08,662 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 9 remaining) [2025-04-29 11:08:08,663 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2025-04-29 11:08:08,663 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2025-04-29 11:08:08,663 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2025-04-29 11:08:08,663 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2025-04-29 11:08:08,663 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2025-04-29 11:08:08,663 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2025-04-29 11:08:08,663 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2025-04-29 11:08:08,663 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2025-04-29 11:08:08,663 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-29 11:08:08,663 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-04-29 11:08:08,667 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:08:08,667 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:08:08,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:08:08 BasicIcfg [2025-04-29 11:08:08,670 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:08:08,671 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:08:08,671 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:08:08,671 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:08:08,671 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:08:06" (3/4) ... [2025-04-29 11:08:08,672 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 11:08:08,674 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-04-29 11:08:08,676 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-29 11:08:08,677 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-29 11:08:08,677 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-29 11:08:08,728 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:08:08,728 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:08:08,728 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:08:08,729 INFO L158 Benchmark]: Toolchain (without parser) took 2460.94ms. Allocated memory is still 167.8MB. Free memory was 133.6MB in the beginning and 115.9MB in the end (delta: 17.6MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2025-04-29 11:08:08,729 INFO L158 Benchmark]: CDTParser took 1.07ms. Allocated memory is still 184.5MB. Free memory is still 112.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:08,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.70ms. Allocated memory is still 167.8MB. Free memory was 133.6MB in the beginning and 119.7MB in the end (delta: 13.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:08:08,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.36ms. Allocated memory is still 167.8MB. Free memory was 119.7MB in the beginning and 118.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:08,729 INFO L158 Benchmark]: Boogie Preprocessor took 22.21ms. Allocated memory is still 167.8MB. Free memory was 118.1MB in the beginning and 117.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:08,730 INFO L158 Benchmark]: RCFGBuilder took 249.62ms. Allocated memory is still 167.8MB. Free memory was 117.1MB in the beginning and 103.6MB in the end (delta: 13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:08:08,730 INFO L158 Benchmark]: TraceAbstraction took 1869.42ms. Allocated memory is still 167.8MB. Free memory was 102.9MB in the beginning and 121.6MB in the end (delta: -18.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:08,730 INFO L158 Benchmark]: Witness Printer took 57.58ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 115.9MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:08:08,731 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07ms. Allocated memory is still 184.5MB. Free memory is still 112.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.70ms. Allocated memory is still 167.8MB. Free memory was 133.6MB in the beginning and 119.7MB in the end (delta: 13.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.36ms. Allocated memory is still 167.8MB. Free memory was 119.7MB in the beginning and 118.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.21ms. Allocated memory is still 167.8MB. Free memory was 118.1MB in the beginning and 117.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 249.62ms. Allocated memory is still 167.8MB. Free memory was 117.1MB in the beginning and 103.6MB in the end (delta: 13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1869.42ms. Allocated memory is still 167.8MB. Free memory was 102.9MB in the beginning and 121.6MB in the end (delta: -18.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.58ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 115.9MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 25]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 27]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 27]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 17]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 17]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 90 locations, 88 edges, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 340 IncrementalHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 17 mSDtfsCounter, 340 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=547occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-29 11:08:08,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE