./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:47:27,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:47:27,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:47:27,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:47:27,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:47:27,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:47:27,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:47:27,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:47:27,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:47:27,205 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:47:27,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:47:27,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:47:27,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:47:27,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:47:27,210 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:47:27,210 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:47:27,210 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:47:27,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:47:27,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:47:27,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:47:27,211 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:47:27,213 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:47:27,213 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:47:27,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:47:27,214 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:47:27,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:47:27,214 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:47:27,214 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:47:27,214 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:47:27,215 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:47:27,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:47:27,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:47:27,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:47:27,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:47:27,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:47:27,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:47:27,216 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:47:27,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:47:27,219 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:47:27,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:47:27,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:47:27,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:47:27,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2024-11-10 17:47:27,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:47:27,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:47:27,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:47:27,450 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:47:27,450 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:47:27,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2024-11-10 17:47:28,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:47:28,991 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:47:28,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2024-11-10 17:47:29,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd976101d/0d045d81411d46f483cd7648263c35de/FLAG7617200c9 [2024-11-10 17:47:29,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd976101d/0d045d81411d46f483cd7648263c35de [2024-11-10 17:47:29,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:47:29,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:47:29,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:47:29,032 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:47:29,036 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:47:29,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551cbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29, skipping insertion in model container [2024-11-10 17:47:29,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,075 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:47:29,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:47:29,454 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:47:29,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:47:29,535 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:47:29,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29 WrapperNode [2024-11-10 17:47:29,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:47:29,537 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:47:29,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:47:29,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:47:29,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,581 INFO L138 Inliner]: procedures = 172, calls = 31, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 96 [2024-11-10 17:47:29,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:47:29,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:47:29,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:47:29,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:47:29,590 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,592 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,601 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 17:47:29,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,608 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,610 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,611 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:47:29,613 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:47:29,613 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:47:29,613 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:47:29,614 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (1/1) ... [2024-11-10 17:47:29,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:47:29,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:47:29,642 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) [2024-11-10 17:47:29,644 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 [2024-11-10 17:47:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 17:47:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:47:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-11-10 17:47:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-11-10 17:47:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:47:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 17:47:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:47:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:47:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-11-10 17:47:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-11-10 17:47:29,688 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:47:29,774 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:47:29,776 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:47:29,872 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:47:29,873 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:47:29,937 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:47:29,938 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:47:29,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:47:29 BoogieIcfgContainer [2024-11-10 17:47:29,938 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:47:29,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:47:29,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:47:29,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:47:29,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:47:29" (1/3) ... [2024-11-10 17:47:29,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0c341d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:47:29, skipping insertion in model container [2024-11-10 17:47:29,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:29" (2/3) ... [2024-11-10 17:47:29,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0c341d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:47:29, skipping insertion in model container [2024-11-10 17:47:29,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:47:29" (3/3) ... [2024-11-10 17:47:29,944 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2024-11-10 17:47:29,956 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:47:29,957 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 17:47:29,957 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:47:30,000 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 17:47:30,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-11-10 17:47:30,060 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-10 17:47:30,060 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 17:47:30,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-10 17:47:30,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-11-10 17:47:30,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 138 flow [2024-11-10 17:47:30,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:47:30,079 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=None, 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;@62dec814, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:47:30,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-10 17:47:30,096 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:47:30,096 INFO L124 PetriNetUnfolderBase]: 2/37 cut-off events. [2024-11-10 17:47:30,097 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 17:47:30,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:30,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:30,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:47:30,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:30,103 INFO L85 PathProgramCache]: Analyzing trace with hash -623536271, now seen corresponding path program 1 times [2024-11-10 17:47:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:30,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519809911] [2024-11-10 17:47:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:30,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:30,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:30,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519809911] [2024-11-10 17:47:30,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519809911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:30,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:30,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:47:30,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206013308] [2024-11-10 17:47:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:30,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:47:30,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:30,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:47:30,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:47:30,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-10 17:47:30,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2024-11-10 17:47:30,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:30,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-10 17:47:30,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:34,905 INFO L124 PetriNetUnfolderBase]: 49254/70613 cut-off events. [2024-11-10 17:47:34,906 INFO L125 PetriNetUnfolderBase]: For 5350/5350 co-relation queries the response was YES. [2024-11-10 17:47:35,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140301 conditions, 70613 events. 49254/70613 cut-off events. For 5350/5350 co-relation queries the response was YES. Maximal size of possible extension queue 2279. Compared 493757 event pairs, 5837 based on Foata normal form. 5282/74939 useless extension candidates. Maximal degree in co-relation 126247. Up to 18683 conditions per place. [2024-11-10 17:47:35,267 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 259 selfloop transitions, 37 changer transitions 0/304 dead transitions. [2024-11-10 17:47:35,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 304 transitions, 1317 flow [2024-11-10 17:47:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 17:47:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 17:47:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 507 transitions. [2024-11-10 17:47:35,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6290322580645161 [2024-11-10 17:47:35,280 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 138 flow. Second operand 13 states and 507 transitions. [2024-11-10 17:47:35,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 304 transitions, 1317 flow [2024-11-10 17:47:35,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 304 transitions, 1239 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 17:47:35,379 INFO L231 Difference]: Finished difference. Result has 76 places, 90 transitions, 353 flow [2024-11-10 17:47:35,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=353, PETRI_PLACES=76, PETRI_TRANSITIONS=90} [2024-11-10 17:47:35,383 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2024-11-10 17:47:35,383 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 90 transitions, 353 flow [2024-11-10 17:47:35,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2024-11-10 17:47:35,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:35,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:35,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:47:35,384 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:47:35,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash -663020232, now seen corresponding path program 1 times [2024-11-10 17:47:35,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:35,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21965257] [2024-11-10 17:47:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:35,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:35,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:35,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21965257] [2024-11-10 17:47:35,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21965257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:35,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:35,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:47:35,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099037877] [2024-11-10 17:47:35,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:35,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:47:35,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:35,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:47:35,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:47:35,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-10 17:47:35,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 90 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-10 17:47:35,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:35,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-10 17:47:35,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:38,067 INFO L124 PetriNetUnfolderBase]: 34267/51230 cut-off events. [2024-11-10 17:47:38,067 INFO L125 PetriNetUnfolderBase]: For 20226/20226 co-relation queries the response was YES. [2024-11-10 17:47:38,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120387 conditions, 51230 events. 34267/51230 cut-off events. For 20226/20226 co-relation queries the response was YES. Maximal size of possible extension queue 1715. Compared 365919 event pairs, 11926 based on Foata normal form. 2768/53835 useless extension candidates. Maximal degree in co-relation 105717. Up to 25754 conditions per place. [2024-11-10 17:47:38,339 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 119 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2024-11-10 17:47:38,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 134 transitions, 763 flow [2024-11-10 17:47:38,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:47:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:47:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-10 17:47:38,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-11-10 17:47:38,342 INFO L175 Difference]: Start difference. First operand has 76 places, 90 transitions, 353 flow. Second operand 3 states and 120 transitions. [2024-11-10 17:47:38,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 134 transitions, 763 flow [2024-11-10 17:47:39,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 134 transitions, 763 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:47:39,035 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 369 flow [2024-11-10 17:47:39,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-11-10 17:47:39,036 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-11-10 17:47:39,037 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 369 flow [2024-11-10 17:47:39,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-10 17:47:39,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:39,037 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:39,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:47:39,037 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:47:39,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:39,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1721072214, now seen corresponding path program 2 times [2024-11-10 17:47:39,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:39,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794909760] [2024-11-10 17:47:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:39,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:39,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:39,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794909760] [2024-11-10 17:47:39,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794909760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:39,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:39,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:47:39,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421592725] [2024-11-10 17:47:39,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:39,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:47:39,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:39,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:47:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:47:39,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-10 17:47:39,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-10 17:47:39,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:39,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-10 17:47:39,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:40,646 INFO L124 PetriNetUnfolderBase]: 18165/28309 cut-off events. [2024-11-10 17:47:40,646 INFO L125 PetriNetUnfolderBase]: For 19765/19772 co-relation queries the response was YES. [2024-11-10 17:47:40,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68762 conditions, 28309 events. 18165/28309 cut-off events. For 19765/19772 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 200646 event pairs, 4884 based on Foata normal form. 1729/30032 useless extension candidates. Maximal degree in co-relation 62916. Up to 11485 conditions per place. [2024-11-10 17:47:41,026 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 154 selfloop transitions, 9 changer transitions 0/174 dead transitions. [2024-11-10 17:47:41,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 174 transitions, 1000 flow [2024-11-10 17:47:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:47:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:47:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-10 17:47:41,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6935483870967742 [2024-11-10 17:47:41,029 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 369 flow. Second operand 4 states and 172 transitions. [2024-11-10 17:47:41,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 174 transitions, 1000 flow [2024-11-10 17:47:41,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 174 transitions, 984 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:47:41,298 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 435 flow [2024-11-10 17:47:41,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2024-11-10 17:47:41,300 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-10 17:47:41,300 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 435 flow [2024-11-10 17:47:41,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-10 17:47:41,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:41,301 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:41,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:47:41,302 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:47:41,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash 531945825, now seen corresponding path program 1 times [2024-11-10 17:47:41,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:41,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199675051] [2024-11-10 17:47:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:41,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:41,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199675051] [2024-11-10 17:47:41,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199675051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:41,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:41,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:47:41,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040513533] [2024-11-10 17:47:41,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:41,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:47:41,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:47:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:47:41,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-10 17:47:41,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-11-10 17:47:41,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:41,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-10 17:47:41,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:43,630 INFO L124 PetriNetUnfolderBase]: 23109/34872 cut-off events. [2024-11-10 17:47:43,630 INFO L125 PetriNetUnfolderBase]: For 27262/27266 co-relation queries the response was YES. [2024-11-10 17:47:43,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90823 conditions, 34872 events. 23109/34872 cut-off events. For 27262/27266 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 238263 event pairs, 3418 based on Foata normal form. 0/34625 useless extension candidates. Maximal degree in co-relation 84846. Up to 9703 conditions per place. [2024-11-10 17:47:43,808 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 297 selfloop transitions, 70 changer transitions 0/377 dead transitions. [2024-11-10 17:47:43,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 377 transitions, 2385 flow [2024-11-10 17:47:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 17:47:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 17:47:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 459 transitions. [2024-11-10 17:47:43,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694789081885856 [2024-11-10 17:47:43,811 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 435 flow. Second operand 13 states and 459 transitions. [2024-11-10 17:47:43,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 377 transitions, 2385 flow [2024-11-10 17:47:44,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 377 transitions, 2385 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:47:44,231 INFO L231 Difference]: Finished difference. Result has 105 places, 157 transitions, 1038 flow [2024-11-10 17:47:44,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1038, PETRI_PLACES=105, PETRI_TRANSITIONS=157} [2024-11-10 17:47:44,232 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 39 predicate places. [2024-11-10 17:47:44,232 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 157 transitions, 1038 flow [2024-11-10 17:47:44,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-11-10 17:47:44,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:44,233 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] [2024-11-10 17:47:44,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:47:44,234 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:47:44,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:44,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1915149951, now seen corresponding path program 1 times [2024-11-10 17:47:44,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:44,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452130364] [2024-11-10 17:47:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:44,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:44,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:44,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452130364] [2024-11-10 17:47:44,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452130364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:44,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:44,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:47:44,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366372655] [2024-11-10 17:47:44,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:44,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:47:44,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:47:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:47:44,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-10 17:47:44,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 157 transitions, 1038 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-11-10 17:47:44,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:44,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-10 17:47:44,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:47,459 INFO L124 PetriNetUnfolderBase]: 23421/35356 cut-off events. [2024-11-10 17:47:47,460 INFO L125 PetriNetUnfolderBase]: For 44603/44607 co-relation queries the response was YES. [2024-11-10 17:47:47,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105336 conditions, 35356 events. 23421/35356 cut-off events. For 44603/44607 co-relation queries the response was YES. Maximal size of possible extension queue 1278. Compared 242758 event pairs, 4069 based on Foata normal form. 234/35588 useless extension candidates. Maximal degree in co-relation 99353. Up to 11450 conditions per place. [2024-11-10 17:47:47,723 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 264 selfloop transitions, 87 changer transitions 0/361 dead transitions. [2024-11-10 17:47:47,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 361 transitions, 2706 flow [2024-11-10 17:47:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 17:47:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 17:47:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 416 transitions. [2024-11-10 17:47:47,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-10 17:47:47,725 INFO L175 Difference]: Start difference. First operand has 105 places, 157 transitions, 1038 flow. Second operand 13 states and 416 transitions. [2024-11-10 17:47:47,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 361 transitions, 2706 flow [2024-11-10 17:47:48,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 361 transitions, 2704 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 17:47:48,842 INFO L231 Difference]: Finished difference. Result has 121 places, 186 transitions, 1516 flow [2024-11-10 17:47:48,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1516, PETRI_PLACES=121, PETRI_TRANSITIONS=186} [2024-11-10 17:47:48,843 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 55 predicate places. [2024-11-10 17:47:48,843 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 186 transitions, 1516 flow [2024-11-10 17:47:48,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-11-10 17:47:48,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:48,844 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] [2024-11-10 17:47:48,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:47:48,844 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:47:48,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash -147853357, now seen corresponding path program 1 times [2024-11-10 17:47:48,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:48,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814410400] [2024-11-10 17:47:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:48,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:48,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:48,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814410400] [2024-11-10 17:47:48,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814410400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:48,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:48,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:47:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611363772] [2024-11-10 17:47:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:48,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:47:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:47:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:47:48,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-10 17:47:48,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 186 transitions, 1516 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-11-10 17:47:48,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:48,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-10 17:47:48,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:51,919 INFO L124 PetriNetUnfolderBase]: 24125/36201 cut-off events. [2024-11-10 17:47:51,919 INFO L125 PetriNetUnfolderBase]: For 64415/64419 co-relation queries the response was YES. [2024-11-10 17:47:52,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113061 conditions, 36201 events. 24125/36201 cut-off events. For 64415/64419 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 245442 event pairs, 4175 based on Foata normal form. 245/36444 useless extension candidates. Maximal degree in co-relation 106416. Up to 11649 conditions per place. [2024-11-10 17:47:52,296 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 289 selfloop transitions, 94 changer transitions 0/397 dead transitions. [2024-11-10 17:47:52,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 397 transitions, 3339 flow [2024-11-10 17:47:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 17:47:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 17:47:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 418 transitions. [2024-11-10 17:47:52,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5186104218362283 [2024-11-10 17:47:52,298 INFO L175 Difference]: Start difference. First operand has 121 places, 186 transitions, 1516 flow. Second operand 13 states and 418 transitions. [2024-11-10 17:47:52,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 397 transitions, 3339 flow [2024-11-10 17:47:53,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 397 transitions, 3320 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-10 17:47:53,975 INFO L231 Difference]: Finished difference. Result has 136 places, 215 transitions, 2010 flow [2024-11-10 17:47:53,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2010, PETRI_PLACES=136, PETRI_TRANSITIONS=215} [2024-11-10 17:47:53,976 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 70 predicate places. [2024-11-10 17:47:53,976 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 215 transitions, 2010 flow [2024-11-10 17:47:53,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-11-10 17:47:53,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:53,976 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] [2024-11-10 17:47:53,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:47:53,976 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:47:53,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:53,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1915812879, now seen corresponding path program 1 times [2024-11-10 17:47:53,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:53,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749199780] [2024-11-10 17:47:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:53,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:54,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:54,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749199780] [2024-11-10 17:47:54,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749199780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:54,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:54,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:47:54,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889410138] [2024-11-10 17:47:54,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:54,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:47:54,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:54,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:47:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:47:54,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-10 17:47:54,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 215 transitions, 2010 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2024-11-10 17:47:54,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:54,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-10 17:47:54,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:57,580 INFO L124 PetriNetUnfolderBase]: 25040/38741 cut-off events. [2024-11-10 17:47:57,580 INFO L125 PetriNetUnfolderBase]: For 92436/92529 co-relation queries the response was YES. [2024-11-10 17:47:57,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122521 conditions, 38741 events. 25040/38741 cut-off events. For 92436/92529 co-relation queries the response was YES. Maximal size of possible extension queue 1374. Compared 281450 event pairs, 5772 based on Foata normal form. 715/39432 useless extension candidates. Maximal degree in co-relation 118028. Up to 13974 conditions per place. [2024-11-10 17:47:57,956 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 341 selfloop transitions, 28 changer transitions 0/389 dead transitions. [2024-11-10 17:47:57,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 389 transitions, 3680 flow [2024-11-10 17:47:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 17:47:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 17:47:57,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 320 transitions. [2024-11-10 17:47:57,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5734767025089605 [2024-11-10 17:47:57,959 INFO L175 Difference]: Start difference. First operand has 136 places, 215 transitions, 2010 flow. Second operand 9 states and 320 transitions. [2024-11-10 17:47:57,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 389 transitions, 3680 flow [2024-11-10 17:47:59,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 389 transitions, 3562 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-10 17:47:59,937 INFO L231 Difference]: Finished difference. Result has 145 places, 212 transitions, 1865 flow [2024-11-10 17:47:59,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1865, PETRI_PLACES=145, PETRI_TRANSITIONS=212} [2024-11-10 17:47:59,939 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 79 predicate places. [2024-11-10 17:47:59,939 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 212 transitions, 1865 flow [2024-11-10 17:47:59,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2024-11-10 17:47:59,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:59,943 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] [2024-11-10 17:47:59,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 17:47:59,943 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:47:59,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:59,944 INFO L85 PathProgramCache]: Analyzing trace with hash -182078937, now seen corresponding path program 2 times [2024-11-10 17:47:59,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:59,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580614058] [2024-11-10 17:47:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:59,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:47:59,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:47:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:00,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 17:48:00,022 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:48:00,023 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2024-11-10 17:48:00,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-10 17:48:00,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-10 17:48:00,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-10 17:48:00,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-11-10 17:48:00,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-11-10 17:48:00,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-11-10 17:48:00,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-10 17:48:00,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 17:48:00,027 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2024-11-10 17:48:00,071 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 17:48:00,071 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 17:48:00,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:48:00 BasicIcfg [2024-11-10 17:48:00,080 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 17:48:00,080 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 17:48:00,080 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 17:48:00,080 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 17:48:00,081 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:47:29" (3/4) ... [2024-11-10 17:48:00,083 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-10 17:48:00,083 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 17:48:00,084 INFO L158 Benchmark]: Toolchain (without parser) took 31055.33ms. Allocated memory was 174.1MB in the beginning and 13.7GB in the end (delta: 13.5GB). Free memory was 104.6MB in the beginning and 11.8GB in the end (delta: -11.7GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2024-11-10 17:48:00,084 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 17:48:00,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.86ms. Allocated memory is still 174.1MB. Free memory was 104.5MB in the beginning and 129.2MB in the end (delta: -24.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2024-11-10 17:48:00,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.03ms. Allocated memory is still 174.1MB. Free memory was 129.2MB in the beginning and 127.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 17:48:00,085 INFO L158 Benchmark]: Boogie Preprocessor took 29.84ms. Allocated memory is still 174.1MB. Free memory was 127.6MB in the beginning and 125.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 17:48:00,085 INFO L158 Benchmark]: IcfgBuilder took 325.47ms. Allocated memory is still 174.1MB. Free memory was 125.7MB in the beginning and 103.9MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-10 17:48:00,085 INFO L158 Benchmark]: TraceAbstraction took 30140.26ms. Allocated memory was 174.1MB in the beginning and 13.7GB in the end (delta: 13.5GB). Free memory was 103.3MB in the beginning and 11.8GB in the end (delta: -11.7GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2024-11-10 17:48:00,085 INFO L158 Benchmark]: Witness Printer took 3.27ms. Allocated memory is still 13.7GB. Free memory is still 11.8GB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 17:48:00,087 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 504.86ms. Allocated memory is still 174.1MB. Free memory was 104.5MB in the beginning and 129.2MB in the end (delta: -24.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.03ms. Allocated memory is still 174.1MB. Free memory was 129.2MB in the beginning and 127.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.84ms. Allocated memory is still 174.1MB. Free memory was 127.6MB in the beginning and 125.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 325.47ms. Allocated memory is still 174.1MB. Free memory was 125.7MB in the beginning and 103.9MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 30140.26ms. Allocated memory was 174.1MB in the beginning and 13.7GB in the end (delta: 13.5GB). Free memory was 103.3MB in the beginning and 11.8GB in the end (delta: -11.7GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 3.27ms. Allocated memory is still 13.7GB. Free memory is still 11.8GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 16. Possible FailurePath: [L704] 0 int w=0, r=0, x, y; [L748] 0 pthread_t t1, t2, t3, t4; [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, t1=-3, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, t1=-3, t2=-2, w=0, x=0, y=0] [L724] 2 int l; VAL [\old(arg)={0:0}, arg={0:0}, r=0, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=0, t1=-3, t2=-2, t3=-1, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=0, t1=-3, t2=-2, t3=-1, t4=0, w=0, x=0, y=0] [L724] 4 int l; VAL [\old(arg)={0:0}, arg={0:0}, r=0, w=0, x=0, y=0] [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [\old(arg)={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [\old(arg)={0:0}, arg={0:0}, l=0, ly=0, r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L740] 2 l = r-1 VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND FALSE 4 !(!cond) [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L727] 4 l = x VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L730] 4 y = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L733] 4 int ly = y; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L743] 2 r = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=0, x=0, y=0] [L714] CALL 1 __VERIFIER_atomic_take_write_lock() [L706] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L706] RET 1 assume_abort_if_not(w==0 && r==0) [L707] 1 w = 1 [L714] RET 1 __VERIFIER_atomic_take_write_lock() [L716] 1 x = 3 VAL [\old(arg)={0:0}, arg={0:0}, r=0, w=1, x=3, y=0] [L736] 4 int lx = x; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=3, y=0] [L738] COND TRUE 4 !(ly == lx) [L738] CALL 4 reach_error() [L16] COND FALSE 4 !(0) VAL [r=0, w=1, x=3, y=0] [L16] 4 __assert_fail ("0", "read_write_lock-2.c", 7, __extension__ __PRETTY_FUNCTION__) VAL [r=0, w=1, x=3, y=0] - UnprovableResult [Line: 747]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 751]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 84 locations, 8 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: 30.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 29.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1029 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1025 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2898 IncrementalHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 6 mSDtfsCounter, 2898 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2010occurred in iteration=6, InterpolantAutomatonStates: 68, 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, 0.5s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-10 17:48:00,114 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:48:02,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:48:02,712 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-10 17:48:02,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:48:02,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:48:02,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:48:02,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:48:02,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:48:02,744 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:48:02,745 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:48:02,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:48:02,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:48:02,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:48:02,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:48:02,747 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:48:02,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:48:02,748 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:48:02,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:48:02,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:48:02,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:48:02,752 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:48:02,752 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:48:02,752 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:48:02,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:48:02,753 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:48:02,753 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-10 17:48:02,753 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:48:02,753 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-10 17:48:02,753 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:48:02,753 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:48:02,753 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:48:02,754 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:48:02,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:48:02,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:48:02,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:48:02,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:48:02,754 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:48:02,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:48:02,755 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-10 17:48:02,755 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-10 17:48:02,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:48:02,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:48:02,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:48:02,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:48:02,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2024-11-10 17:48:03,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:48:03,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:48:03,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:48:03,062 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:48:03,063 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:48:03,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2024-11-10 17:48:04,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:48:04,732 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:48:04,733 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2024-11-10 17:48:04,748 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19abfb094/00654617afcb47f3b938ce3be5385bba/FLAG4396c3c00 [2024-11-10 17:48:04,761 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19abfb094/00654617afcb47f3b938ce3be5385bba [2024-11-10 17:48:04,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:48:04,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:48:04,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:48:04,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:48:04,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:48:04,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:48:04" (1/1) ... [2024-11-10 17:48:04,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1048193d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:04, skipping insertion in model container [2024-11-10 17:48:04,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:48:04" (1/1) ... [2024-11-10 17:48:04,807 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:48:05,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:48:05,128 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:48:05,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:48:05,205 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:48:05,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05 WrapperNode [2024-11-10 17:48:05,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:48:05,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:48:05,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:48:05,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:48:05,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,229 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,252 INFO L138 Inliner]: procedures = 173, calls = 31, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 97 [2024-11-10 17:48:05,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:48:05,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:48:05,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:48:05,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:48:05,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,270 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,280 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 17:48:05,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,289 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:48:05,302 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:48:05,302 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:48:05,302 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:48:05,303 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (1/1) ... [2024-11-10 17:48:05,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:48:05,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:48:05,337 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) [2024-11-10 17:48:05,340 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 [2024-11-10 17:48:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 17:48:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:48:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-11-10 17:48:05,379 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-11-10 17:48:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-10 17:48:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 17:48:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:48:05,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:48:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-11-10 17:48:05,380 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-11-10 17:48:05,382 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:48:05,523 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:48:05,525 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:48:05,653 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:48:05,653 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:48:05,744 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:48:05,744 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:48:05,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:48:05 BoogieIcfgContainer [2024-11-10 17:48:05,745 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:48:05,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:48:05,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:48:05,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:48:05,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:48:04" (1/3) ... [2024-11-10 17:48:05,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785dfe9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:48:05, skipping insertion in model container [2024-11-10 17:48:05,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:05" (2/3) ... [2024-11-10 17:48:05,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785dfe9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:48:05, skipping insertion in model container [2024-11-10 17:48:05,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:48:05" (3/3) ... [2024-11-10 17:48:05,756 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2024-11-10 17:48:05,770 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:48:05,771 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 17:48:05,771 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:48:05,844 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 17:48:05,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-11-10 17:48:05,911 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-10 17:48:05,912 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 17:48:05,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-10 17:48:05,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-11-10 17:48:05,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 138 flow [2024-11-10 17:48:05,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:48:05,942 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=None, 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;@58239f9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:48:05,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-10 17:48:05,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:48:05,962 INFO L124 PetriNetUnfolderBase]: 2/37 cut-off events. [2024-11-10 17:48:05,962 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 17:48:05,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:05,966 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:05,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:48:05,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1060746739, now seen corresponding path program 1 times [2024-11-10 17:48:05,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:48:05,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610927312] [2024-11-10 17:48:05,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:05,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:05,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:48:06,000 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 17:48:06,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-10 17:48:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:06,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 17:48:06,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:48:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:06,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:48:06,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 17:48:06,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610927312] [2024-11-10 17:48:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610927312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:06,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:06,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:48:06,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736366377] [2024-11-10 17:48:06,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:06,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:48:06,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 17:48:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:48:06,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:48:06,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-10 17:48:06,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2024-11-10 17:48:06,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:06,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-10 17:48:06,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:09,754 INFO L124 PetriNetUnfolderBase]: 32699/47532 cut-off events. [2024-11-10 17:48:09,755 INFO L125 PetriNetUnfolderBase]: For 3366/3366 co-relation queries the response was YES. [2024-11-10 17:48:09,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93902 conditions, 47532 events. 32699/47532 cut-off events. For 3366/3366 co-relation queries the response was YES. Maximal size of possible extension queue 1416. Compared 316837 event pairs, 12664 based on Foata normal form. 3202/50107 useless extension candidates. Maximal degree in co-relation 85165. Up to 26932 conditions per place. [2024-11-10 17:48:10,053 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 212 selfloop transitions, 35 changer transitions 0/255 dead transitions. [2024-11-10 17:48:10,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 255 transitions, 1079 flow [2024-11-10 17:48:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 17:48:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 17:48:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 458 transitions. [2024-11-10 17:48:10,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5682382133995038 [2024-11-10 17:48:10,075 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 138 flow. Second operand 13 states and 458 transitions. [2024-11-10 17:48:10,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 255 transitions, 1079 flow [2024-11-10 17:48:10,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 255 transitions, 1029 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 17:48:10,120 INFO L231 Difference]: Finished difference. Result has 75 places, 89 transitions, 327 flow [2024-11-10 17:48:10,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=327, PETRI_PLACES=75, PETRI_TRANSITIONS=89} [2024-11-10 17:48:10,125 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2024-11-10 17:48:10,126 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 89 transitions, 327 flow [2024-11-10 17:48:10,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2024-11-10 17:48:10,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:10,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:10,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-10 17:48:10,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:10,329 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:48:10,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash -985187568, now seen corresponding path program 1 times [2024-11-10 17:48:10,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:48:10,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930465608] [2024-11-10 17:48:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:10,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:10,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:48:10,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 17:48:10,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-10 17:48:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:10,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 17:48:10,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:48:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:10,422 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:48:10,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 17:48:10,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930465608] [2024-11-10 17:48:10,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930465608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:10,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:10,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:48:10,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768456382] [2024-11-10 17:48:10,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:10,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:48:10,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 17:48:10,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:48:10,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:48:10,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-10 17:48:10,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 89 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-10 17:48:10,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:10,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-10 17:48:10,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:12,465 INFO L124 PetriNetUnfolderBase]: 21704/32261 cut-off events. [2024-11-10 17:48:12,466 INFO L125 PetriNetUnfolderBase]: For 8963/8963 co-relation queries the response was YES. [2024-11-10 17:48:12,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72781 conditions, 32261 events. 21704/32261 cut-off events. For 8963/8963 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 213935 event pairs, 8249 based on Foata normal form. 2224/34397 useless extension candidates. Maximal degree in co-relation 65699. Up to 16678 conditions per place. [2024-11-10 17:48:12,609 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 121 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2024-11-10 17:48:12,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 134 transitions, 743 flow [2024-11-10 17:48:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:48:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:48:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-10 17:48:12,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-11-10 17:48:12,611 INFO L175 Difference]: Start difference. First operand has 75 places, 89 transitions, 327 flow. Second operand 3 states and 120 transitions. [2024-11-10 17:48:12,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 134 transitions, 743 flow [2024-11-10 17:48:12,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 134 transitions, 743 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:48:12,674 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 343 flow [2024-11-10 17:48:12,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2024-11-10 17:48:12,675 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-11-10 17:48:12,675 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 343 flow [2024-11-10 17:48:12,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-10 17:48:12,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:12,675 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:12,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-10 17:48:12,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:12,876 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:48:12,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:12,877 INFO L85 PathProgramCache]: Analyzing trace with hash -817923312, now seen corresponding path program 2 times [2024-11-10 17:48:12,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:48:12,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076212989] [2024-11-10 17:48:12,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 17:48:12,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:12,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:48:12,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 17:48:12,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-10 17:48:12,930 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 17:48:12,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:48:12,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 17:48:12,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:48:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:12,950 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:48:12,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 17:48:12,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076212989] [2024-11-10 17:48:12,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076212989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:12,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:12,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:48:12,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178819990] [2024-11-10 17:48:12,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:12,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:48:12,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 17:48:12,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:48:12,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:48:12,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-10 17:48:12,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-10 17:48:12,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:12,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-10 17:48:12,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:15,379 INFO L124 PetriNetUnfolderBase]: 28192/42573 cut-off events. [2024-11-10 17:48:15,379 INFO L125 PetriNetUnfolderBase]: For 24390/24397 co-relation queries the response was YES. [2024-11-10 17:48:15,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103469 conditions, 42573 events. 28192/42573 cut-off events. For 24390/24397 co-relation queries the response was YES. Maximal size of possible extension queue 1383. Compared 305834 event pairs, 8088 based on Foata normal form. 707/43274 useless extension candidates. Maximal degree in co-relation 90381. Up to 22061 conditions per place. [2024-11-10 17:48:15,631 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 179 selfloop transitions, 11 changer transitions 0/199 dead transitions. [2024-11-10 17:48:15,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 199 transitions, 1147 flow [2024-11-10 17:48:15,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:48:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:48:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-10 17:48:15,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6935483870967742 [2024-11-10 17:48:15,633 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 343 flow. Second operand 4 states and 172 transitions. [2024-11-10 17:48:15,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 199 transitions, 1147 flow [2024-11-10 17:48:15,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 199 transitions, 1131 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:48:15,793 INFO L231 Difference]: Finished difference. Result has 81 places, 99 transitions, 418 flow [2024-11-10 17:48:15,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=81, PETRI_TRANSITIONS=99} [2024-11-10 17:48:15,794 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-11-10 17:48:15,794 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 99 transitions, 418 flow [2024-11-10 17:48:15,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-10 17:48:15,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:15,795 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:15,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-10 17:48:15,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:15,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:48:15,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1167845473, now seen corresponding path program 1 times [2024-11-10 17:48:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:48:15,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102828940] [2024-11-10 17:48:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:15,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:15,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:48:16,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 17:48:16,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-10 17:48:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:16,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 17:48:16,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:48:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:16,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:48:16,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 17:48:16,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102828940] [2024-11-10 17:48:16,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102828940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:16,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:16,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 17:48:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367277053] [2024-11-10 17:48:16,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:16,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:48:16,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 17:48:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:48:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:48:16,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-10 17:48:16,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 99 transitions, 418 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-11-10 17:48:16,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:16,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-10 17:48:16,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:21,579 INFO L124 PetriNetUnfolderBase]: 54010/80094 cut-off events. [2024-11-10 17:48:21,579 INFO L125 PetriNetUnfolderBase]: For 53553/53556 co-relation queries the response was YES. [2024-11-10 17:48:21,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199177 conditions, 80094 events. 54010/80094 cut-off events. For 53553/53556 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 602828 event pairs, 13208 based on Foata normal form. 1118/81210 useless extension candidates. Maximal degree in co-relation 179066. Up to 33954 conditions per place. [2024-11-10 17:48:21,992 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 317 selfloop transitions, 32 changer transitions 0/357 dead transitions. [2024-11-10 17:48:21,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 357 transitions, 2060 flow [2024-11-10 17:48:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 17:48:21,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 17:48:21,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 424 transitions. [2024-11-10 17:48:21,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6217008797653959 [2024-11-10 17:48:21,995 INFO L175 Difference]: Start difference. First operand has 81 places, 99 transitions, 418 flow. Second operand 11 states and 424 transitions. [2024-11-10 17:48:21,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 357 transitions, 2060 flow [2024-11-10 17:48:22,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 357 transitions, 2042 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-10 17:48:22,810 INFO L231 Difference]: Finished difference. Result has 97 places, 111 transitions, 566 flow [2024-11-10 17:48:22,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=566, PETRI_PLACES=97, PETRI_TRANSITIONS=111} [2024-11-10 17:48:22,814 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 31 predicate places. [2024-11-10 17:48:22,814 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 111 transitions, 566 flow [2024-11-10 17:48:22,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-11-10 17:48:22,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:22,815 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:22,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-10 17:48:23,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:23,019 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:48:23,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:23,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1610798947, now seen corresponding path program 1 times [2024-11-10 17:48:23,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:48:23,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861709496] [2024-11-10 17:48:23,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:23,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:23,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:48:23,023 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 17:48:23,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-10 17:48:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:23,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 17:48:23,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:48:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:23,115 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:48:23,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 17:48:23,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861709496] [2024-11-10 17:48:23,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861709496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:23,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:23,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:48:23,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368303223] [2024-11-10 17:48:23,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:23,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:48:23,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 17:48:23,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:48:23,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:48:23,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-10 17:48:23,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 111 transitions, 566 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 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) [2024-11-10 17:48:23,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:23,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-10 17:48:23,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:30,191 INFO L124 PetriNetUnfolderBase]: 68148/101984 cut-off events. [2024-11-10 17:48:30,192 INFO L125 PetriNetUnfolderBase]: For 123024/123027 co-relation queries the response was YES. [2024-11-10 17:48:30,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277107 conditions, 101984 events. 68148/101984 cut-off events. For 123024/123027 co-relation queries the response was YES. Maximal size of possible extension queue 3695. Compared 803625 event pairs, 35909 based on Foata normal form. 0/100058 useless extension candidates. Maximal degree in co-relation 250582. Up to 68100 conditions per place. [2024-11-10 17:48:30,995 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 259 selfloop transitions, 107 changer transitions 0/374 dead transitions. [2024-11-10 17:48:30,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 374 transitions, 2690 flow [2024-11-10 17:48:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 17:48:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 17:48:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 411 transitions. [2024-11-10 17:48:30,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5099255583126551 [2024-11-10 17:48:30,997 INFO L175 Difference]: Start difference. First operand has 97 places, 111 transitions, 566 flow. Second operand 13 states and 411 transitions. [2024-11-10 17:48:30,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 374 transitions, 2690 flow [2024-11-10 17:48:32,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 374 transitions, 2582 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-10 17:48:33,000 INFO L231 Difference]: Finished difference. Result has 116 places, 194 transitions, 1368 flow [2024-11-10 17:48:33,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1368, PETRI_PLACES=116, PETRI_TRANSITIONS=194} [2024-11-10 17:48:33,004 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 50 predicate places. [2024-11-10 17:48:33,004 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 194 transitions, 1368 flow [2024-11-10 17:48:33,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 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) [2024-11-10 17:48:33,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:33,004 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] [2024-11-10 17:48:33,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-10 17:48:33,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:33,205 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 17:48:33,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:33,206 INFO L85 PathProgramCache]: Analyzing trace with hash 231866563, now seen corresponding path program 1 times [2024-11-10 17:48:33,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:48:33,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551561589] [2024-11-10 17:48:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:33,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 17:48:33,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:48:33,208 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 17:48:33,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-10 17:48:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:33,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 17:48:33,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:48:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:33,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:48:33,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 17:48:33,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551561589] [2024-11-10 17:48:33,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551561589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:33,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:33,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 17:48:33,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050955044] [2024-11-10 17:48:33,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:33,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:48:33,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 17:48:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:48:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:48:33,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-10 17:48:33,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 194 transitions, 1368 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-11-10 17:48:33,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:33,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-10 17:48:33,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:46,268 INFO L124 PetriNetUnfolderBase]: 112711/166280 cut-off events. [2024-11-10 17:48:46,268 INFO L125 PetriNetUnfolderBase]: For 221961/221964 co-relation queries the response was YES. [2024-11-10 17:48:47,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477667 conditions, 166280 events. 112711/166280 cut-off events. For 221961/221964 co-relation queries the response was YES. Maximal size of possible extension queue 6194. Compared 1363847 event pairs, 36692 based on Foata normal form. 2207/168485 useless extension candidates. Maximal degree in co-relation 444209. Up to 82143 conditions per place. [2024-11-10 17:48:47,798 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 373 selfloop transitions, 110 changer transitions 0/491 dead transitions. [2024-11-10 17:48:47,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 491 transitions, 3815 flow [2024-11-10 17:48:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 17:48:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 17:48:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 416 transitions. [2024-11-10 17:48:47,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6099706744868035 [2024-11-10 17:48:47,801 INFO L175 Difference]: Start difference. First operand has 116 places, 194 transitions, 1368 flow. Second operand 11 states and 416 transitions. [2024-11-10 17:48:47,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 491 transitions, 3815 flow