./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-nondet.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version fca748b1
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-nondet.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267
--- Real Ultimate output ---
This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m
[2024-11-20 09:48:32,811 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-20 09:48:32,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-20 09:48:32,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-20 09:48:32,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-20 09:48:32,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-20 09:48:32,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-20 09:48:32,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-20 09:48:32,923 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-20 09:48:32,924 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-20 09:48:32,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-20 09:48:32,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-20 09:48:32,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-20 09:48:32,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-20 09:48:32,926 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-20 09:48:32,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-20 09:48:32,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-20 09:48:32,930 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-20 09:48:32,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-20 09:48:32,930 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-20 09:48:32,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-20 09:48:32,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-20 09:48:32,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-20 09:48:32,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-20 09:48:32,932 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-20 09:48:32,932 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-20 09:48:32,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-20 09:48:32,932 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-20 09:48:32,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-20 09:48:32,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-20 09:48:32,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-20 09:48:32,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-20 09:48:32,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-20 09:48:32,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-20 09:48:32,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-20 09:48:32,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-20 09:48:32,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-20 09:48:32,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-20 09:48:32,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-20 09:48:32,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-20 09:48:32,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-20 09:48:32,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-20 09:48:32,936 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267
[2024-11-20 09:48:33,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-20 09:48:33,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-20 09:48:33,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-20 09:48:33,234 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-20 09:48:33,235 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-20 09:48:33,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-nondet.i
[2024-11-20 09:48:34,670 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-20 09:48:34,984 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-20 09:48:34,985 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-nondet.i
[2024-11-20 09:48:35,005 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00a84cd90/86321d0c59054ec582b908441ed4ad4f/FLAGd504f4652
[2024-11-20 09:48:35,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00a84cd90/86321d0c59054ec582b908441ed4ad4f
[2024-11-20 09:48:35,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-20 09:48:35,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-20 09:48:35,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-20 09:48:35,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-20 09:48:35,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-20 09:48:35,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c89add6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35, skipping insertion in model container
[2024-11-20 09:48:35,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,299 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-20 09:48:35,679 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-nondet.i[33026,33039]
[2024-11-20 09:48:35,706 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-20 09:48:35,716 INFO L200 MainTranslator]: Completed pre-run
[2024-11-20 09:48:35,772 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-nondet.i[33026,33039]
[2024-11-20 09:48:35,777 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-20 09:48:35,821 INFO L204 MainTranslator]: Completed translation
[2024-11-20 09:48:35,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35 WrapperNode
[2024-11-20 09:48:35,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-20 09:48:35,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-20 09:48:35,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-20 09:48:35,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-20 09:48:35,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,874 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57
[2024-11-20 09:48:35,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-20 09:48:35,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-20 09:48:35,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-20 09:48:35,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-20 09:48:35,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,890 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,911 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].
[2024-11-20 09:48:35,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,919 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-20 09:48:35,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-20 09:48:35,930 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-20 09:48:35,931 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-20 09:48:35,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (1/1) ...
[2024-11-20 09:48:35,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-20 09:48:35,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-20 09:48:35,979 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)
[2024-11-20 09:48:35,982 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
[2024-11-20 09:48:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-20 09:48:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure f1
[2024-11-20 09:48:36,027 INFO L138 BoogieDeclarations]: Found implementation of procedure f1
[2024-11-20 09:48:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure f2
[2024-11-20 09:48:36,028 INFO L138 BoogieDeclarations]: Found implementation of procedure f2
[2024-11-20 09:48:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-20 09:48:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-20 09:48:36,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-20 09:48:36,029 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-20 09:48:36,177 INFO L238 CfgBuilder]: Building ICFG
[2024-11-20 09:48:36,179 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-20 09:48:36,303 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-20 09:48:36,303 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-20 09:48:36,399 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-20 09:48:36,399 INFO L316 CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-20 09:48:36,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:48:36 BoogieIcfgContainer
[2024-11-20 09:48:36,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-20 09:48:36,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-20 09:48:36,402 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-20 09:48:36,406 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-20 09:48:36,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:48:35" (1/3) ...
[2024-11-20 09:48:36,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df22761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:48:36, skipping insertion in model container
[2024-11-20 09:48:36,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:48:35" (2/3) ...
[2024-11-20 09:48:36,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df22761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:48:36, skipping insertion in model container
[2024-11-20 09:48:36,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:48:36" (3/3) ...
[2024-11-20 09:48:36,412 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i
[2024-11-20 09:48:36,427 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-20 09:48:36,427 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-20 09:48:36,427 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-20 09:48:36,468 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-11-20 09:48:36,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 62 flow
[2024-11-20 09:48:36,535 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events.
[2024-11-20 09:48:36,536 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-20 09:48:36,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 3/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place.
[2024-11-20 09:48:36,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 62 flow
[2024-11-20 09:48:36,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 49 flow
[2024-11-20 09:48:36,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-20 09:48:36,566 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@712c2faf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-20 09:48:36,566 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2024-11-20 09:48:36,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-20 09:48:36,573 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events.
[2024-11-20 09:48:36,574 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2024-11-20 09:48:36,574 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-20 09:48:36,575 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-20 09:48:36,575 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-11-20 09:48:36,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-20 09:48:36,581 INFO L85 PathProgramCache]: Analyzing trace with hash 933352434, now seen corresponding path program 1 times
[2024-11-20 09:48:36,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-20 09:48:36,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325096453]
[2024-11-20 09:48:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-20 09:48:36,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-20 09:48:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-20 09:48:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-20 09:48:36,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-20 09:48:36,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325096453]
[2024-11-20 09:48:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325096453] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-20 09:48:36,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-20 09:48:36,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-20 09:48:36,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131803359]
[2024-11-20 09:48:36,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-20 09:48:37,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-20 09:48:37,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-20 09:48:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-20 09:48:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-20 09:48:37,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24
[2024-11-20 09:48:37,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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)
[2024-11-20 09:48:37,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-20 09:48:37,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24
[2024-11-20 09:48:37,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-20 09:48:37,257 INFO L124 PetriNetUnfolderBase]: 151/284 cut-off events.
[2024-11-20 09:48:37,258 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES.
[2024-11-20 09:48:37,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 284 events. 151/284 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1131 event pairs, 68 based on Foata normal form. 11/239 useless extension candidates. Maximal degree in co-relation 520. Up to 145 conditions per place.
[2024-11-20 09:48:37,264 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 7 changer transitions 6/41 dead transitions.
[2024-11-20 09:48:37,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 176 flow
[2024-11-20 09:48:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-20 09:48:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-20 09:48:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions.
[2024-11-20 09:48:37,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111
[2024-11-20 09:48:37,276 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 49 flow. Second operand 6 states and 70 transitions.
[2024-11-20 09:48:37,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 176 flow
[2024-11-20 09:48:37,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 41 transitions, 165 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-20 09:48:37,280 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 83 flow
[2024-11-20 09:48:37,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=83, PETRI_PLACES=29, PETRI_TRANSITIONS=23}
[2024-11-20 09:48:37,287 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places.
[2024-11-20 09:48:37,288 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 83 flow
[2024-11-20 09:48:37,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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)
[2024-11-20 09:48:37,289 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-20 09:48:37,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-20 09:48:37,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-20 09:48:37,290 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-11-20 09:48:37,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-20 09:48:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1130876244, now seen corresponding path program 1 times
[2024-11-20 09:48:37,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-20 09:48:37,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795787491]
[2024-11-20 09:48:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-20 09:48:37,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-20 09:48:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-20 09:48:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-20 09:48:37,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-20 09:48:37,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795787491]
[2024-11-20 09:48:37,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795787491] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-20 09:48:37,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-20 09:48:37,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-20 09:48:37,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892564555]
[2024-11-20 09:48:37,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-20 09:48:37,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-20 09:48:37,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-20 09:48:37,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-20 09:48:37,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-20 09:48:37,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24
[2024-11-20 09:48:37,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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)
[2024-11-20 09:48:37,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-20 09:48:37,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24
[2024-11-20 09:48:37,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-20 09:48:37,531 INFO L124 PetriNetUnfolderBase]: 106/228 cut-off events.
[2024-11-20 09:48:37,533 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES.
[2024-11-20 09:48:37,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 228 events. 106/228 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 888 event pairs, 27 based on Foata normal form. 13/226 useless extension candidates. Maximal degree in co-relation 355. Up to 85 conditions per place.
[2024-11-20 09:48:37,536 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 16 selfloop transitions, 3 changer transitions 18/40 dead transitions.
[2024-11-20 09:48:37,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 212 flow
[2024-11-20 09:48:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-20 09:48:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-20 09:48:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions.
[2024-11-20 09:48:37,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5
[2024-11-20 09:48:37,541 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 83 flow. Second operand 5 states and 60 transitions.
[2024-11-20 09:48:37,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 212 flow
[2024-11-20 09:48:37,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-20 09:48:37,546 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 76 flow
[2024-11-20 09:48:37,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=19}
[2024-11-20 09:48:37,547 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places.
[2024-11-20 09:48:37,547 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 76 flow
[2024-11-20 09:48:37,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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)
[2024-11-20 09:48:37,547 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-20 09:48:37,547 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-20 09:48:37,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-20 09:48:37,547 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-11-20 09:48:37,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-20 09:48:37,548 INFO L85 PathProgramCache]: Analyzing trace with hash 468998787, now seen corresponding path program 1 times
[2024-11-20 09:48:37,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-20 09:48:37,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370399376]
[2024-11-20 09:48:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-20 09:48:37,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-20 09:48:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-20 09:48:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-20 09:48:37,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-20 09:48:37,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370399376]
[2024-11-20 09:48:37,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370399376] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-20 09:48:37,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004812529]
[2024-11-20 09:48:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-20 09:48:37,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-20 09:48:37,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-20 09:48:37,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-20 09:48:37,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-20 09:48:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-20 09:48:37,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-20 09:48:37,756 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-20 09:48:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-20 09:48:37,821 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-20 09:48:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-20 09:48:37,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004812529] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-20 09:48:37,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-20 09:48:37,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7
[2024-11-20 09:48:37,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902943784]
[2024-11-20 09:48:37,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-20 09:48:37,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-20 09:48:37,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-20 09:48:37,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-20 09:48:37,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2024-11-20 09:48:37,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-20 09:48:37,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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)
[2024-11-20 09:48:37,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-20 09:48:37,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-20 09:48:37,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-20 09:48:38,056 INFO L124 PetriNetUnfolderBase]: 76/161 cut-off events.
[2024-11-20 09:48:38,056 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES.
[2024-11-20 09:48:38,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 161 events. 76/161 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 492 event pairs, 27 based on Foata normal form. 5/152 useless extension candidates. Maximal degree in co-relation 437. Up to 61 conditions per place.
[2024-11-20 09:48:38,061 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 16 selfloop transitions, 2 changer transitions 22/41 dead transitions.
[2024-11-20 09:48:38,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 228 flow
[2024-11-20 09:48:38,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-20 09:48:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-20 09:48:38,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 61 transitions.
[2024-11-20 09:48:38,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3630952380952381
[2024-11-20 09:48:38,064 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 76 flow. Second operand 7 states and 61 transitions.
[2024-11-20 09:48:38,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 228 flow
[2024-11-20 09:48:38,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 194 flow, removed 7 selfloop flow, removed 7 redundant places.
[2024-11-20 09:48:38,069 INFO L231 Difference]: Finished difference. Result has 34 places, 16 transitions, 60 flow
[2024-11-20 09:48:38,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=60, PETRI_PLACES=34, PETRI_TRANSITIONS=16}
[2024-11-20 09:48:38,071 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places.
[2024-11-20 09:48:38,071 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 16 transitions, 60 flow
[2024-11-20 09:48:38,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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)
[2024-11-20 09:48:38,072 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-20 09:48:38,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-20 09:48:38,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-20 09:48:38,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-20 09:48:38,277 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-11-20 09:48:38,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-20 09:48:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2054529023, now seen corresponding path program 1 times
[2024-11-20 09:48:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-20 09:48:38,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494737191]
[2024-11-20 09:48:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-20 09:48:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-20 09:48:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-20 09:48:38,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-20 09:48:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-20 09:48:38,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-20 09:48:38,354 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-20 09:48:38,355 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining)
[2024-11-20 09:48:38,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining)
[2024-11-20 09:48:38,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining)
[2024-11-20 09:48:38,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining)
[2024-11-20 09:48:38,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-20 09:48:38,359 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2024-11-20 09:48:38,384 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2024-11-20 09:48:38,384 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-20 09:48:38,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:48:38 BasicIcfg
[2024-11-20 09:48:38,390 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-20 09:48:38,391 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-20 09:48:38,391 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-20 09:48:38,391 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-20 09:48:38,392 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:48:36" (3/4) ...
[2024-11-20 09:48:38,393 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample
[2024-11-20 09:48:38,449 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2024-11-20 09:48:38,449 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-20 09:48:38,450 INFO L158 Benchmark]: Toolchain (without parser) took 3203.55ms. Allocated memory is still 165.7MB. Free memory was 134.2MB in the beginning and 88.4MB in the end (delta: 45.8MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB.
[2024-11-20 09:48:38,450 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-20 09:48:38,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.12ms. Allocated memory is still 165.7MB. Free memory was 134.2MB in the beginning and 111.7MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB.
[2024-11-20 09:48:38,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.65ms. Allocated memory is still 165.7MB. Free memory was 111.7MB in the beginning and 109.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-20 09:48:38,451 INFO L158 Benchmark]: Boogie Preprocessor took 54.68ms. Allocated memory is still 165.7MB. Free memory was 109.6MB in the beginning and 107.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-20 09:48:38,451 INFO L158 Benchmark]: RCFGBuilder took 469.67ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 118.1MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-20 09:48:38,451 INFO L158 Benchmark]: TraceAbstraction took 1988.33ms. Allocated memory is still 165.7MB. Free memory was 118.1MB in the beginning and 91.6MB in the end (delta: 26.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB.
[2024-11-20 09:48:38,452 INFO L158 Benchmark]: Witness Printer took 58.18ms. Allocated memory is still 165.7MB. Free memory was 91.6MB in the beginning and 88.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-20 09:48:38,453 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 109.1MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 574.12ms. Allocated memory is still 165.7MB. Free memory was 134.2MB in the beginning and 111.7MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 50.65ms. Allocated memory is still 165.7MB. Free memory was 111.7MB in the beginning and 109.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 54.68ms. Allocated memory is still 165.7MB. Free memory was 109.6MB in the beginning and 107.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 469.67ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 118.1MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 1988.33ms. Allocated memory is still 165.7MB. Free memory was 118.1MB in the beginning and 91.6MB in the end (delta: 26.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB.
* Witness Printer took 58.18ms. Allocated memory is still 165.7MB. Free memory was 91.6MB in the beginning and 88.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 753]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L754] 0 int _N;
[L755] 0 atomic_int limit;
[L772] 0 _N = __VERIFIER_nondet_int()
[L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1)
[L750] COND FALSE 0 !(!cond)
[L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1)
[L774] 0 pthread_t t1, t2;
[L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0)
VAL [\old(arg)={0:0}, _N=0, limit=0, t1=-1]
[L757] COND FALSE 1 !(__VERIFIER_nondet_int())
[L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0)
VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=0, t1=-1, t2=0]
[L760] 1 limit = _N + 1
VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1]
[L765] 2 int i, bound;
[L766] 2 bound = limit
[L767] 2 i = 0
VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=0, limit=1]
[L767] COND TRUE 2 i < bound
[L767] 2 i++
VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=1, limit=1]
[L767] COND FALSE 2 !(i < bound)
[L768] CALL 2 __VERIFIER_assert(i <= _N)
[L753] COND TRUE 2 !expression
VAL [\old(arg)={0:0}, \old(expression)=0, _N=0, arg={0:0}, expression=0, limit=1]
[L753] 2 reach_error()
VAL [\old(arg)={0:0}, \old(expression)=0, _N=0, arg={0:0}, expression=0, limit=1]
- UnprovableResult [Line: 775]: 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: 776]: 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 5 procedures, 37 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 244 IncrementalHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 2 mSDtfsCounter, 244 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=1, InterpolantAutomatonStates: 18, 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, 0.6s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 6 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 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 proved your program to be incorrect!
[2024-11-20 09:48:38,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE