./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-wmm/rfi005.i --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 61a67961
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-wmm/rfi005.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 0f51f8e84e29dbf7268818c0bd5364f23c52e80cf2778700bc9afe3da3c44b42
--- Real Ultimate output ---
This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m
[2024-10-14 14:25:14,694 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-10-14 14:25:14,755 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-10-14 14:25:14,761 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-10-14 14:25:14,761 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-10-14 14:25:14,777 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-10-14 14:25:14,778 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-10-14 14:25:14,779 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-10-14 14:25:14,779 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-10-14 14:25:14,780 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-10-14 14:25:14,781 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-10-14 14:25:14,781 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-10-14 14:25:14,782 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-10-14 14:25:14,782 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-10-14 14:25:14,785 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-10-14 14:25:14,785 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-10-14 14:25:14,785 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-10-14 14:25:14,786 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-10-14 14:25:14,786 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-10-14 14:25:14,786 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-10-14 14:25:14,786 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-10-14 14:25:14,787 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-10-14 14:25:14,787 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-10-14 14:25:14,787 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-10-14 14:25:14,787 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-10-14 14:25:14,787 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-10-14 14:25:14,788 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-10-14 14:25:14,788 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-10-14 14:25:14,788 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-10-14 14:25:14,788 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-10-14 14:25:14,788 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-10-14 14:25:14,788 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-10-14 14:25:14,789 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-14 14:25:14,789 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-10-14 14:25:14,789 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-10-14 14:25:14,789 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-10-14 14:25:14,789 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-10-14 14:25:14,789 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-10-14 14:25:14,789 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-10-14 14:25:14,790 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-10-14 14:25:14,790 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-10-14 14:25:14,791 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-10-14 14:25:14,791 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 -> 0f51f8e84e29dbf7268818c0bd5364f23c52e80cf2778700bc9afe3da3c44b42
[2024-10-14 14:25:14,986 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-10-14 14:25:15,006 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-10-14 14:25:15,008 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-10-14 14:25:15,009 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-10-14 14:25:15,010 INFO  L274        PluginConnector]: CDTParser initialized
[2024-10-14 14:25:15,010 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi005.i
[2024-10-14 14:25:16,282 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-10-14 14:25:16,487 INFO  L384              CDTParser]: Found 1 translation units.
[2024-10-14 14:25:16,487 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi005.i
[2024-10-14 14:25:16,503 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a8df361/af0cb20ac2534ef096aa2080241edf74/FLAG3777b6f87
[2024-10-14 14:25:16,517 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a8df361/af0cb20ac2534ef096aa2080241edf74
[2024-10-14 14:25:16,519 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-10-14 14:25:16,520 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-10-14 14:25:16,523 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-10-14 14:25:16,523 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-10-14 14:25:16,527 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-10-14 14:25:16,528 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:16,528 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf177c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16, skipping insertion in model container
[2024-10-14 14:25:16,528 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:16,565 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-10-14 14:25:16,711 WARN  L248   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-wmm/rfi005.i[983,996]
[2024-10-14 14:25:16,857 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-14 14:25:16,866 INFO  L200         MainTranslator]: Completed pre-run
[2024-10-14 14:25:16,882 WARN  L248   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-wmm/rfi005.i[983,996]
[2024-10-14 14:25:16,932 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-14 14:25:16,959 INFO  L204         MainTranslator]: Completed translation
[2024-10-14 14:25:16,960 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16 WrapperNode
[2024-10-14 14:25:16,960 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-10-14 14:25:16,961 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-10-14 14:25:16,961 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-10-14 14:25:16,961 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-10-14 14:25:16,966 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:16,981 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,015 INFO  L138                Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 163
[2024-10-14 14:25:17,015 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-10-14 14:25:17,016 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-10-14 14:25:17,016 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-10-14 14:25:17,016 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-10-14 14:25:17,030 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,030 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,035 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,051 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].
[2024-10-14 14:25:17,052 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,052 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,059 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,061 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,062 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,063 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,066 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-10-14 14:25:17,067 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-10-14 14:25:17,067 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-10-14 14:25:17,067 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-10-14 14:25:17,068 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (1/1) ...
[2024-10-14 14:25:17,072 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-14 14:25:17,084 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-14 14:25:17,097 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)
[2024-10-14 14:25:17,100 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
[2024-10-14 14:25:17,139 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2024-10-14 14:25:17,139 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-10-14 14:25:17,140 INFO  L130     BoogieDeclarations]: Found specification of procedure P0
[2024-10-14 14:25:17,140 INFO  L138     BoogieDeclarations]: Found implementation of procedure P0
[2024-10-14 14:25:17,140 INFO  L130     BoogieDeclarations]: Found specification of procedure P1
[2024-10-14 14:25:17,140 INFO  L138     BoogieDeclarations]: Found implementation of procedure P1
[2024-10-14 14:25:17,140 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-10-14 14:25:17,140 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2024-10-14 14:25:17,140 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-10-14 14:25:17,140 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-10-14 14:25:17,142 WARN  L207             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-10-14 14:25:17,276 INFO  L238             CfgBuilder]: Building ICFG
[2024-10-14 14:25:17,278 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-10-14 14:25:17,547 INFO  L283             CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-10-14 14:25:17,547 INFO  L287             CfgBuilder]: Performing block encoding
[2024-10-14 14:25:17,741 INFO  L309             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-10-14 14:25:17,741 INFO  L314             CfgBuilder]: Removed 0 assume(true) statements.
[2024-10-14 14:25:17,742 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:25:17 BoogieIcfgContainer
[2024-10-14 14:25:17,742 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-10-14 14:25:17,745 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-10-14 14:25:17,745 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-10-14 14:25:17,748 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-10-14 14:25:17,748 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:25:16" (1/3) ...
[2024-10-14 14:25:17,749 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d3e973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:25:17, skipping insertion in model container
[2024-10-14 14:25:17,749 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:25:16" (2/3) ...
[2024-10-14 14:25:17,750 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d3e973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:25:17, skipping insertion in model container
[2024-10-14 14:25:17,750 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:25:17" (3/3) ...
[2024-10-14 14:25:17,751 INFO  L112   eAbstractionObserver]: Analyzing ICFG rfi005.i
[2024-10-14 14:25:17,768 INFO  L209   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-10-14 14:25:17,769 INFO  L149   ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations.
[2024-10-14 14:25:17,769 INFO  L484   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-10-14 14:25:17,809 INFO  L143    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-10-14 14:25:17,837 INFO  L73            FinitePrefix]: Start finitePrefix. Operand has 40 places, 34 transitions, 76 flow
[2024-10-14 14:25:17,860 INFO  L124   PetriNetUnfolderBase]: 1/32 cut-off events.
[2024-10-14 14:25:17,861 INFO  L125   PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-10-14 14:25:17,864 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 1/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. 
[2024-10-14 14:25:17,865 INFO  L82        GeneralOperation]: Start removeDead. Operand has 40 places, 34 transitions, 76 flow
[2024-10-14 14:25:17,867 INFO  L88        GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 70 flow
[2024-10-14 14:25:17,877 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-10-14 14:25:17,883 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;@36b7d888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-10-14 14:25:17,883 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2024-10-14 14:25:17,889 INFO  L185   PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-10-14 14:25:17,889 INFO  L124   PetriNetUnfolderBase]: 0/9 cut-off events.
[2024-10-14 14:25:17,889 INFO  L125   PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-10-14 14:25:17,889 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-14 14:25:17,890 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-10-14 14:25:17,890 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2024-10-14 14:25:17,894 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-14 14:25:17,894 INFO  L85        PathProgramCache]: Analyzing trace with hash -201681913, now seen corresponding path program 1 times
[2024-10-14 14:25:17,901 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-14 14:25:17,901 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545368340]
[2024-10-14 14:25:17,901 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-14 14:25:17,902 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-14 14:25:18,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-14 14:25:18,251 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-14 14:25:18,252 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-14 14:25:18,252 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545368340]
[2024-10-14 14:25:18,252 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545368340] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-14 14:25:18,253 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-14 14:25:18,253 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-10-14 14:25:18,254 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050938800]
[2024-10-14 14:25:18,254 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-14 14:25:18,261 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-14 14:25:18,266 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-14 14:25:18,287 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-14 14:25:18,287 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-14 14:25:18,289 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34
[2024-10-14 14:25:18,291 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 70 flow. Second operand  has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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)
[2024-10-14 14:25:18,291 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-14 14:25:18,291 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34
[2024-10-14 14:25:18,292 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-14 14:25:18,506 INFO  L124   PetriNetUnfolderBase]: 208/424 cut-off events.
[2024-10-14 14:25:18,507 INFO  L125   PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-10-14 14:25:18,508 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 798 conditions, 424 events. 208/424 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2410 event pairs, 16 based on Foata normal form. 21/417 useless extension candidates. Maximal degree in co-relation 788. Up to 319 conditions per place. 
[2024-10-14 14:25:18,514 INFO  L140   encePairwiseOnDemand]: 30/34 looper letters, 24 selfloop transitions, 2 changer transitions 0/38 dead transitions.
[2024-10-14 14:25:18,515 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 134 flow
[2024-10-14 14:25:18,516 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-14 14:25:18,518 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-10-14 14:25:18,522 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions.
[2024-10-14 14:25:18,523 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.696078431372549
[2024-10-14 14:25:18,525 INFO  L175             Difference]: Start difference. First operand has 38 places, 32 transitions, 70 flow. Second operand 3 states and 71 transitions.
[2024-10-14 14:25:18,525 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 134 flow
[2024-10-14 14:25:18,527 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-10-14 14:25:18,529 INFO  L231             Difference]: Finished difference. Result has 37 places, 30 transitions, 68 flow
[2024-10-14 14:25:18,530 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=30}
[2024-10-14 14:25:18,534 INFO  L277   CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places.
[2024-10-14 14:25:18,534 INFO  L471      AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 68 flow
[2024-10-14 14:25:18,534 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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)
[2024-10-14 14:25:18,534 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-14 14:25:18,534 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-10-14 14:25:18,534 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-10-14 14:25:18,534 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2024-10-14 14:25:18,535 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-14 14:25:18,535 INFO  L85        PathProgramCache]: Analyzing trace with hash -1957171564, now seen corresponding path program 1 times
[2024-10-14 14:25:18,535 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-14 14:25:18,536 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166805016]
[2024-10-14 14:25:18,536 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-14 14:25:18,536 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-14 14:25:18,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-10-14 14:25:18,562 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-10-14 14:25:18,576 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-10-14 14:25:18,597 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-10-14 14:25:18,597 INFO  L325         BasicCegarLoop]: Counterexample is feasible
[2024-10-14 14:25:18,598 INFO  L782   garLoopResultBuilder]: Registering result UNSAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining)
[2024-10-14 14:25:18,599 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining)
[2024-10-14 14:25:18,600 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining)
[2024-10-14 14:25:18,600 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining)
[2024-10-14 14:25:18,601 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining)
[2024-10-14 14:25:18,601 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining)
[2024-10-14 14:25:18,601 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining)
[2024-10-14 14:25:18,601 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-10-14 14:25:18,601 INFO  L407         BasicCegarLoop]: Path program histogram: [1, 1]
[2024-10-14 14:25:18,629 INFO  L234   ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2024-10-14 14:25:18,629 INFO  L165   ceAbstractionStarter]: Computing trace abstraction results
[2024-10-14 14:25:18,635 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 02:25:18 BasicIcfg
[2024-10-14 14:25:18,636 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-10-14 14:25:18,636 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2024-10-14 14:25:18,636 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2024-10-14 14:25:18,636 INFO  L274        PluginConnector]: Witness Printer initialized
[2024-10-14 14:25:18,637 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:25:17" (3/4) ...
[2024-10-14 14:25:18,637 INFO  L133         WitnessPrinter]: Generating witness for reachability counterexample
[2024-10-14 14:25:18,688 INFO  L149         WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2024-10-14 14:25:18,692 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-10-14 14:25:18,692 INFO  L158              Benchmark]: Toolchain (without parser) took 2171.66ms. Allocated memory was 159.4MB in the beginning and 207.6MB in the end (delta: 48.2MB). Free memory was 105.1MB in the beginning and 123.1MB in the end (delta: -18.0MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB.
[2024-10-14 14:25:18,692 INFO  L158              Benchmark]: CDTParser took 0.13ms. Allocated memory is still 159.4MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-10-14 14:25:18,693 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 437.48ms. Allocated memory is still 159.4MB. Free memory was 104.7MB in the beginning and 78.3MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB.
[2024-10-14 14:25:18,693 INFO  L158              Benchmark]: Boogie Procedure Inliner took 54.75ms. Allocated memory is still 159.4MB. Free memory was 78.3MB in the beginning and 74.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-10-14 14:25:18,693 INFO  L158              Benchmark]: Boogie Preprocessor took 50.40ms. Allocated memory is still 159.4MB. Free memory was 74.9MB in the beginning and 70.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-10-14 14:25:18,693 INFO  L158              Benchmark]: RCFGBuilder took 674.97ms. Allocated memory was 159.4MB in the beginning and 207.6MB in the end (delta: 48.2MB). Free memory was 70.7MB in the beginning and 118.5MB in the end (delta: -47.8MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB.
[2024-10-14 14:25:18,693 INFO  L158              Benchmark]: TraceAbstraction took 891.11ms. Allocated memory is still 207.6MB. Free memory was 117.4MB in the beginning and 127.3MB in the end (delta: -9.9MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-10-14 14:25:18,693 INFO  L158              Benchmark]: Witness Printer took 55.57ms. Allocated memory is still 207.6MB. Free memory was 127.3MB in the beginning and 123.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-10-14 14:25:18,695 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.13ms. Allocated memory is still 159.4MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 437.48ms. Allocated memory is still 159.4MB. Free memory was 104.7MB in the beginning and 78.3MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 54.75ms. Allocated memory is still 159.4MB. Free memory was 78.3MB in the beginning and 74.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 50.40ms. Allocated memory is still 159.4MB. Free memory was 74.9MB in the beginning and 70.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * RCFGBuilder took 674.97ms. Allocated memory was 159.4MB in the beginning and 207.6MB in the end (delta: 48.2MB). Free memory was 70.7MB in the beginning and 118.5MB in the end (delta: -47.8MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB.
 * TraceAbstraction took 891.11ms. Allocated memory is still 207.6MB. Free memory was 117.4MB in the beginning and 127.3MB in the end (delta: -9.9MB). There was no memory consumed. Max. memory is 16.1GB.
 * Witness Printer took 55.57ms. Allocated memory is still 207.6MB. Free memory was 127.3MB in the beginning and 123.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 19]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L709]               0  int __unbuffered_cnt = 0;
[L711]               0  int __unbuffered_p0_EAX = 0;
[L713]               0  int __unbuffered_p1_EAX = 0;
[L715]               0  int __unbuffered_p1_EBX = 0;
[L716]               0  _Bool main$tmp_guard0;
[L717]               0  _Bool main$tmp_guard1;
[L719]               0  int x = 0;
[L721]               0  int y = 0;
[L722]               0  _Bool y$flush_delayed;
[L723]               0  int y$mem_tmp;
[L724]               0  _Bool y$r_buff0_thd0;
[L725]               0  _Bool y$r_buff0_thd1;
[L726]               0  _Bool y$r_buff0_thd2;
[L727]               0  _Bool y$r_buff1_thd0;
[L728]               0  _Bool y$r_buff1_thd1;
[L729]               0  _Bool y$r_buff1_thd2;
[L730]               0  _Bool y$read_delayed;
[L731]               0  int *y$read_delayed_var;
[L732]               0  int y$w_buff0;
[L733]               0  _Bool y$w_buff0_used;
[L734]               0  int y$w_buff1;
[L735]               0  _Bool y$w_buff1_used;
[L736]               0  _Bool weak$$choice0;
[L737]               0  _Bool weak$$choice2;
[L834]               0  pthread_t t1665;
[L835]  FCALL, FORK  0  pthread_create(&t1665, ((void *)0), P0, ((void *)0))
        VAL             [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1665=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0]
[L836]               0  pthread_t t1666;
[L837]  FCALL, FORK  0  pthread_create(&t1666, ((void *)0), P1, ((void *)0))
        VAL             [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1665=-1, t1666=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0]
[L771]               2  y$w_buff1 = y$w_buff0
[L772]               2  y$w_buff0 = 1
[L773]               2  y$w_buff1_used = y$w_buff0_used
[L774]               2  y$w_buff0_used = (_Bool)1
[L775]  CALL         2  __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used))
[L19]   COND FALSE   2  !(!expression)
[L775]  RET          2  __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used))
[L776]               2  y$r_buff1_thd0 = y$r_buff0_thd0
[L777]               2  y$r_buff1_thd1 = y$r_buff0_thd1
[L778]               2  y$r_buff1_thd2 = y$r_buff0_thd2
[L779]               2  y$r_buff0_thd2 = (_Bool)1
        VAL             [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0]
[L782]               2  y$w_buff1 = y$w_buff0
[L783]               2  y$w_buff0 = 2
[L784]               2  y$w_buff1_used = y$w_buff0_used
[L785]               2  y$w_buff0_used = (_Bool)1
[L786]  CALL         2  __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used))
[L19]   COND TRUE    2  !expression
[L19]                2  reach_error()
        VAL             [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=1, y$w_buff1_used=1, y=0]

  - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable
    Unable to prove that a call to reach_error is unreachable
 Reason: Not analyzed. 
  - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable
    Unable to prove that a call to reach_error is unreachable
 Reason: Not analyzed. 
  - UnprovableResult [Line: 835]: 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: 837]: 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, 55 locations, 7 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.2s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be incorrect!
[2024-10-14 14:25:18,728 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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