/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i


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


This is Ultimate 0.2.3-dev-b8dbc81
[2023-01-28 06:33:28,857 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-01-28 06:33:28,858 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-01-28 06:33:28,886 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-01-28 06:33:28,886 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-01-28 06:33:28,887 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-01-28 06:33:28,887 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-01-28 06:33:28,891 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-01-28 06:33:28,894 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
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[2023-01-28 06:33:28,901 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-01-28 06:33:28,903 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-01-28 06:33:28,904 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-01-28 06:33:28,906 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-01-28 06:33:28,906 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-01-28 06:33:28,907 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-01-28 06:33:28,909 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-01-28 06:33:28,913 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-01-28 06:33:28,914 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-01-28 06:33:28,916 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-01-28 06:33:28,918 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-01-28 06:33:28,919 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-01-28 06:33:28,922 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-01-28 06:33:28,922 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-01-28 06:33:28,923 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-01-28 06:33:28,923 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-01-28 06:33:28,923 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-01-28 06:33:28,924 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-01-28 06:33:28,924 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-01-28 06:33:28,924 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-01-28 06:33:28,925 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-01-28 06:33:28,925 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-01-28 06:33:28,925 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-01-28 06:33:28,926 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2023-01-28 06:33:28,926 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-01-28 06:33:28,927 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-01-28 06:33:28,930 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf
[2023-01-28 06:33:28,952 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-01-28 06:33:28,952 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-01-28 06:33:28,953 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-01-28 06:33:28,953 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-01-28 06:33:28,954 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-01-28 06:33:28,954 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-01-28 06:33:28,954 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-01-28 06:33:28,954 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-01-28 06:33:28,954 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-01-28 06:33:28,954 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-01-28 06:33:28,955 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-01-28 06:33:28,955 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-01-28 06:33:28,955 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-01-28 06:33:28,955 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-01-28 06:33:28,955 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-01-28 06:33:28,955 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-01-28 06:33:28,955 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-01-28 06:33:28,955 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-01-28 06:33:28,955 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-01-28 06:33:28,955 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-01-28 06:33:28,955 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-01-28 06:33:28,956 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2023-01-28 06:33:28,956 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-01-28 06:33:28,956 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-01-28 06:33:28,956 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-01-28 06:33:28,956 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-01-28 06:33:28,956 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-01-28 06:33:28,956 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-01-28 06:33:28,956 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-01-28 06:33:28,956 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-01-28 06:33:28,957 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-01-28 06:33:28,957 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER
[2023-01-28 06:33:29,134 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-01-28 06:33:29,149 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-01-28 06:33:29,151 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-01-28 06:33:29,151 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-01-28 06:33:29,152 INFO  L275        PluginConnector]: CDTParser initialized
[2023-01-28 06:33:29,152 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i
[2023-01-28 06:33:30,087 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-01-28 06:33:30,300 INFO  L351              CDTParser]: Found 1 translation units.
[2023-01-28 06:33:30,300 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i
[2023-01-28 06:33:30,310 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449aa97b1/e80158a419a74d428a25de575fea1584/FLAG6dd32ea5a
[2023-01-28 06:33:30,321 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449aa97b1/e80158a419a74d428a25de575fea1584
[2023-01-28 06:33:30,322 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-01-28 06:33:30,323 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-01-28 06:33:30,324 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-01-28 06:33:30,324 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-01-28 06:33:30,326 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-01-28 06:33:30,327 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,327 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b9875a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30, skipping insertion in model container
[2023-01-28 06:33:30,327 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,332 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-01-28 06:33:30,358 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-01-28 06:33:30,524 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i[31167,31180]
[2023-01-28 06:33:30,532 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-01-28 06:33:30,541 INFO  L203         MainTranslator]: Completed pre-run
[2023-01-28 06:33:30,573 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i[31167,31180]
[2023-01-28 06:33:30,575 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-01-28 06:33:30,604 INFO  L208         MainTranslator]: Completed translation
[2023-01-28 06:33:30,604 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30 WrapperNode
[2023-01-28 06:33:30,605 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-01-28 06:33:30,606 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-01-28 06:33:30,606 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-01-28 06:33:30,606 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2023-01-28 06:33:30,611 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,623 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,657 INFO  L138                Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 188
[2023-01-28 06:33:30,657 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-01-28 06:33:30,658 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-01-28 06:33:30,658 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-01-28 06:33:30,658 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-01-28 06:33:30,666 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,666 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,680 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,682 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,687 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,690 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,692 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,704 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,710 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-01-28 06:33:30,711 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-01-28 06:33:30,711 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-01-28 06:33:30,711 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-01-28 06:33:30,712 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (1/1) ...
[2023-01-28 06:33:30,718 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-01-28 06:33:30,746 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-01-28 06:33:30,771 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-01-28 06:33:30,788 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-01-28 06:33:30,803 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-01-28 06:33:30,803 INFO  L130     BoogieDeclarations]: Found specification of procedure thr1
[2023-01-28 06:33:30,803 INFO  L138     BoogieDeclarations]: Found implementation of procedure thr1
[2023-01-28 06:33:30,804 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-01-28 06:33:30,804 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-01-28 06:33:30,804 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-01-28 06:33:30,804 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-01-28 06:33:30,804 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-01-28 06:33:30,804 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-01-28 06:33:30,804 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-01-28 06:33:30,805 WARN  L210             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-01-28 06:33:30,910 INFO  L236             CfgBuilder]: Building ICFG
[2023-01-28 06:33:30,912 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-01-28 06:33:31,159 INFO  L277             CfgBuilder]: Performing block encoding
[2023-01-28 06:33:31,271 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-01-28 06:33:31,271 INFO  L302             CfgBuilder]: Removed 3 assume(true) statements.
[2023-01-28 06:33:31,273 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:33:31 BoogieIcfgContainer
[2023-01-28 06:33:31,273 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-01-28 06:33:31,275 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-01-28 06:33:31,275 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-01-28 06:33:31,277 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-01-28 06:33:31,277 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:33:30" (1/3) ...
[2023-01-28 06:33:31,277 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbe3bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:33:31, skipping insertion in model container
[2023-01-28 06:33:31,277 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:33:30" (2/3) ...
[2023-01-28 06:33:31,278 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbe3bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:33:31, skipping insertion in model container
[2023-01-28 06:33:31,278 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:33:31" (3/3) ...
[2023-01-28 06:33:31,279 INFO  L112   eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-1.i
[2023-01-28 06:33:31,290 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-01-28 06:33:31,290 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-01-28 06:33:31,290 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-01-28 06:33:31,356 INFO  L144    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-01-28 06:33:31,382 INFO  L73            FinitePrefix]: Start finitePrefix. Operand has 107 places, 114 transitions, 233 flow
[2023-01-28 06:33:31,442 INFO  L130       PetriNetUnfolder]: 11/124 cut-off events.
[2023-01-28 06:33:31,443 INFO  L131       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-01-28 06:33:31,447 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 11/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. 
[2023-01-28 06:33:31,448 INFO  L82        GeneralOperation]: Start removeDead. Operand has 107 places, 114 transitions, 233 flow
[2023-01-28 06:33:31,451 INFO  L88        GeneralOperation]: Finished RemoveDead, result has has 107 places, 114 transitions, 233 flow
[2023-01-28 06:33:31,454 INFO  L124   etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-01-28 06:33:31,467 INFO  L131   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 114 transitions, 233 flow
[2023-01-28 06:33:31,472 INFO  L113        LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 114 transitions, 233 flow
[2023-01-28 06:33:31,473 INFO  L73            FinitePrefix]: Start finitePrefix. Operand has 107 places, 114 transitions, 233 flow
[2023-01-28 06:33:31,509 INFO  L130       PetriNetUnfolder]: 11/124 cut-off events.
[2023-01-28 06:33:31,509 INFO  L131       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-01-28 06:33:31,510 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 11/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. 
[2023-01-28 06:33:31,511 INFO  L119        LiptonReduction]: Number of co-enabled transitions 2028
[2023-01-28 06:33:34,602 INFO  L134        LiptonReduction]: Checked pairs total: 2167
[2023-01-28 06:33:34,602 INFO  L136        LiptonReduction]: Total number of compositions: 104
[2023-01-28 06:33:34,620 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-01-28 06:33:34,629 INFO  L357      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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@31c81f70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-01-28 06:33:34,629 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-01-28 06:33:34,636 INFO  L130       PetriNetUnfolder]: 5/24 cut-off events.
[2023-01-28 06:33:34,636 INFO  L131       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-01-28 06:33:34,636 INFO  L200   CegarLoopForPetriNet]: Found error trace
[2023-01-28 06:33:34,637 INFO  L208   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-28 06:33:34,637 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-28 06:33:34,640 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-28 06:33:34,640 INFO  L85        PathProgramCache]: Analyzing trace with hash -1286972708, now seen corresponding path program 1 times
[2023-01-28 06:33:34,646 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-28 06:33:34,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788199229]
[2023-01-28 06:33:34,647 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-28 06:33:34,647 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-28 06:33:34,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-28 06:33:34,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-01-28 06:33:34,830 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-28 06:33:34,830 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788199229]
[2023-01-28 06:33:34,830 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788199229] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-28 06:33:34,831 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-28 06:33:34,831 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-01-28 06:33:34,832 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376807121]
[2023-01-28 06:33:34,832 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-28 06:33:34,837 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-01-28 06:33:34,840 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-28 06:33:34,853 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-01-28 06:33:34,853 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-01-28 06:33:34,870 INFO  L471   CegarLoopForPetriNet]: Number of universal loopers: 95 out of 218
[2023-01-28 06:33:34,872 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 28 transitions, 61 flow. Second operand  has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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)
[2023-01-28 06:33:34,873 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-01-28 06:33:34,873 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 218
[2023-01-28 06:33:34,873 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-01-28 06:33:34,925 INFO  L130       PetriNetUnfolder]: 42/93 cut-off events.
[2023-01-28 06:33:34,925 INFO  L131       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-01-28 06:33:34,925 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 191 conditions, 93 events. 42/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 2 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 178. Up to 83 conditions per place. 
[2023-01-28 06:33:34,926 INFO  L137   encePairwiseOnDemand]: 212/218 looper letters, 22 selfloop transitions, 2 changer transitions 1/26 dead transitions.
[2023-01-28 06:33:34,926 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 26 transitions, 107 flow
[2023-01-28 06:33:34,928 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-01-28 06:33:34,930 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-01-28 06:33:34,939 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions.
[2023-01-28 06:33:34,942 INFO  L516   CegarLoopForPetriNet]: DFA transition density 0.481651376146789
[2023-01-28 06:33:34,943 INFO  L72            ComplementDD]: Start complementDD. Operand 3 states and 315 transitions.
[2023-01-28 06:33:34,943 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions.
[2023-01-28 06:33:34,945 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-01-28 06:33:34,947 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions.
[2023-01-28 06:33:34,951 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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)
[2023-01-28 06:33:34,955 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 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)
[2023-01-28 06:33:34,956 INFO  L81            ComplementDD]: Finished complementDD. Result  has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 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)
[2023-01-28 06:33:34,957 INFO  L175             Difference]: Start difference. First operand has 24 places, 28 transitions, 61 flow. Second operand 3 states and 315 transitions.
[2023-01-28 06:33:34,957 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 26 transitions, 107 flow
[2023-01-28 06:33:34,958 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-01-28 06:33:34,959 INFO  L231             Difference]: Finished difference. Result has 25 places, 23 transitions, 55 flow
[2023-01-28 06:33:34,961 INFO  L264   CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=25, PETRI_TRANSITIONS=23}
[2023-01-28 06:33:34,963 INFO  L281   CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places.
[2023-01-28 06:33:34,963 INFO  L495      AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 55 flow
[2023-01-28 06:33:34,964 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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)
[2023-01-28 06:33:34,964 INFO  L200   CegarLoopForPetriNet]: Found error trace
[2023-01-28 06:33:34,964 INFO  L208   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-28 06:33:34,964 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-01-28 06:33:34,964 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-28 06:33:34,968 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-28 06:33:34,968 INFO  L85        PathProgramCache]: Analyzing trace with hash -342307077, now seen corresponding path program 1 times
[2023-01-28 06:33:34,970 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-28 06:33:34,971 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693873043]
[2023-01-28 06:33:34,971 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-28 06:33:34,971 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-28 06:33:34,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-28 06:33:35,038 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-01-28 06:33:35,038 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-28 06:33:35,038 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693873043]
[2023-01-28 06:33:35,038 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693873043] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-28 06:33:35,038 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-28 06:33:35,038 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-01-28 06:33:35,039 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558728719]
[2023-01-28 06:33:35,039 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-28 06:33:35,039 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-01-28 06:33:35,040 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-28 06:33:35,040 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-01-28 06:33:35,040 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-01-28 06:33:35,040 INFO  L471   CegarLoopForPetriNet]: Number of universal loopers: 94 out of 218
[2023-01-28 06:33:35,041 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 55 flow. Second operand  has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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)
[2023-01-28 06:33:35,041 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-01-28 06:33:35,041 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 218
[2023-01-28 06:33:35,041 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-01-28 06:33:35,076 INFO  L130       PetriNetUnfolder]: 50/113 cut-off events.
[2023-01-28 06:33:35,076 INFO  L131       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-01-28 06:33:35,077 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 236 conditions, 113 events. 50/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 257 event pairs, 14 based on Foata normal form. 3/101 useless extension candidates. Maximal degree in co-relation 221. Up to 73 conditions per place. 
[2023-01-28 06:33:35,077 INFO  L137   encePairwiseOnDemand]: 215/218 looper letters, 26 selfloop transitions, 2 changer transitions 1/30 dead transitions.
[2023-01-28 06:33:35,077 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 127 flow
[2023-01-28 06:33:35,077 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-01-28 06:33:35,078 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-01-28 06:33:35,078 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions.
[2023-01-28 06:33:35,078 INFO  L516   CegarLoopForPetriNet]: DFA transition density 0.47706422018348627
[2023-01-28 06:33:35,079 INFO  L72            ComplementDD]: Start complementDD. Operand 3 states and 312 transitions.
[2023-01-28 06:33:35,079 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions.
[2023-01-28 06:33:35,079 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-01-28 06:33:35,079 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions.
[2023-01-28 06:33:35,079 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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)
[2023-01-28 06:33:35,081 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 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)
[2023-01-28 06:33:35,081 INFO  L81            ComplementDD]: Finished complementDD. Result  has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 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)
[2023-01-28 06:33:35,081 INFO  L175             Difference]: Start difference. First operand has 25 places, 23 transitions, 55 flow. Second operand 3 states and 312 transitions.
[2023-01-28 06:33:35,081 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 127 flow
[2023-01-28 06:33:35,081 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 30 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-01-28 06:33:35,082 INFO  L231             Difference]: Finished difference. Result has 25 places, 24 transitions, 63 flow
[2023-01-28 06:33:35,082 INFO  L264   CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=25, PETRI_TRANSITIONS=24}
[2023-01-28 06:33:35,083 INFO  L281   CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places.
[2023-01-28 06:33:35,083 INFO  L495      AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 63 flow
[2023-01-28 06:33:35,083 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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)
[2023-01-28 06:33:35,083 INFO  L200   CegarLoopForPetriNet]: Found error trace
[2023-01-28 06:33:35,083 INFO  L208   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-28 06:33:35,083 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-01-28 06:33:35,083 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-28 06:33:35,084 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-28 06:33:35,084 INFO  L85        PathProgramCache]: Analyzing trace with hash -339227072, now seen corresponding path program 1 times
[2023-01-28 06:33:35,084 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-28 06:33:35,084 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371929496]
[2023-01-28 06:33:35,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-28 06:33:35,084 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-28 06:33:35,098 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-28 06:33:35,165 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-01-28 06:33:35,165 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-28 06:33:35,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371929496]
[2023-01-28 06:33:35,166 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371929496] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-28 06:33:35,166 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-28 06:33:35,166 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-01-28 06:33:35,166 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512315123]
[2023-01-28 06:33:35,166 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-28 06:33:35,166 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-01-28 06:33:35,166 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-28 06:33:35,167 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-01-28 06:33:35,167 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-01-28 06:33:35,167 INFO  L471   CegarLoopForPetriNet]: Number of universal loopers: 85 out of 218
[2023-01-28 06:33:35,168 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 63 flow. Second operand  has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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)
[2023-01-28 06:33:35,168 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-01-28 06:33:35,168 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 218
[2023-01-28 06:33:35,168 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-01-28 06:33:35,271 INFO  L130       PetriNetUnfolder]: 71/161 cut-off events.
[2023-01-28 06:33:35,271 INFO  L131       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-01-28 06:33:35,271 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 342 conditions, 161 events. 71/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 325 event pairs, 12 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 326. Up to 73 conditions per place. 
[2023-01-28 06:33:35,274 INFO  L137   encePairwiseOnDemand]: 212/218 looper letters, 39 selfloop transitions, 5 changer transitions 1/46 dead transitions.
[2023-01-28 06:33:35,274 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 46 transitions, 197 flow
[2023-01-28 06:33:35,274 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-28 06:33:35,274 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2023-01-28 06:33:35,275 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions.
[2023-01-28 06:33:35,277 INFO  L516   CegarLoopForPetriNet]: DFA transition density 0.42507645259938837
[2023-01-28 06:33:35,277 INFO  L72            ComplementDD]: Start complementDD. Operand 6 states and 556 transitions.
[2023-01-28 06:33:35,277 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions.
[2023-01-28 06:33:35,277 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-01-28 06:33:35,277 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions.
[2023-01-28 06:33:35,278 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 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)
[2023-01-28 06:33:35,281 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 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)
[2023-01-28 06:33:35,281 INFO  L81            ComplementDD]: Finished complementDD. Result  has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 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)
[2023-01-28 06:33:35,281 INFO  L175             Difference]: Start difference. First operand has 25 places, 24 transitions, 63 flow. Second operand 6 states and 556 transitions.
[2023-01-28 06:33:35,281 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 46 transitions, 197 flow
[2023-01-28 06:33:35,282 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-01-28 06:33:35,283 INFO  L231             Difference]: Finished difference. Result has 32 places, 27 transitions, 91 flow
[2023-01-28 06:33:35,283 INFO  L264   CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=27}
[2023-01-28 06:33:35,284 INFO  L281   CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places.
[2023-01-28 06:33:35,284 INFO  L495      AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 91 flow
[2023-01-28 06:33:35,284 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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)
[2023-01-28 06:33:35,284 INFO  L200   CegarLoopForPetriNet]: Found error trace
[2023-01-28 06:33:35,284 INFO  L208   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-28 06:33:35,285 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-01-28 06:33:35,285 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-28 06:33:35,285 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-28 06:33:35,285 INFO  L85        PathProgramCache]: Analyzing trace with hash 85896053, now seen corresponding path program 1 times
[2023-01-28 06:33:35,285 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-28 06:33:35,286 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322926276]
[2023-01-28 06:33:35,286 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-28 06:33:35,286 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-28 06:33:35,367 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-01-28 06:33:35,367 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-01-28 06:33:35,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-01-28 06:33:35,437 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-01-28 06:33:35,438 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-01-28 06:33:35,438 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining)
[2023-01-28 06:33:35,440 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining)
[2023-01-28 06:33:35,441 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-01-28 06:33:35,441 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2023-01-28 06:33:35,442 INFO  L307   ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN (1/2)
[2023-01-28 06:33:35,445 INFO  L228   ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2023-01-28 06:33:35,445 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-01-28 06:33:35,496 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:33:35 BasicIcfg
[2023-01-28 06:33:35,496 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-01-28 06:33:35,500 INFO  L158              Benchmark]: Toolchain (without parser) took 5173.08ms. Allocated memory was 350.2MB in the beginning and 608.2MB in the end (delta: 257.9MB). Free memory was 289.5MB in the beginning and 463.7MB in the end (delta: -174.2MB). Peak memory consumption was 85.4MB. Max. memory is 16.0GB.
[2023-01-28 06:33:35,500 INFO  L158              Benchmark]: CDTParser took 0.08ms. Allocated memory is still 350.2MB. Free memory is still 299.3MB. There was no memory consumed. Max. memory is 16.0GB.
[2023-01-28 06:33:35,501 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 280.60ms. Allocated memory is still 350.2MB. Free memory was 289.2MB in the beginning and 267.9MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB.
[2023-01-28 06:33:35,501 INFO  L158              Benchmark]: Boogie Procedure Inliner took 51.83ms. Allocated memory is still 350.2MB. Free memory was 267.9MB in the beginning and 265.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB.
[2023-01-28 06:33:35,502 INFO  L158              Benchmark]: Boogie Preprocessor took 52.09ms. Allocated memory is still 350.2MB. Free memory was 265.5MB in the beginning and 263.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB.
[2023-01-28 06:33:35,504 INFO  L158              Benchmark]: RCFGBuilder took 562.57ms. Allocated memory was 350.2MB in the beginning and 608.2MB in the end (delta: 257.9MB). Free memory was 263.4MB in the beginning and 536.5MB in the end (delta: -273.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB.
[2023-01-28 06:33:35,506 INFO  L158              Benchmark]: TraceAbstraction took 4221.40ms. Allocated memory is still 608.2MB. Free memory was 536.5MB in the beginning and 463.7MB in the end (delta: 72.9MB). Peak memory consumption was 72.6MB. Max. memory is 16.0GB.
[2023-01-28 06:33:35,508 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.08ms. Allocated memory is still 350.2MB. Free memory is still 299.3MB. There was no memory consumed. Max. memory is 16.0GB.
 * CACSL2BoogieTranslator took 280.60ms. Allocated memory is still 350.2MB. Free memory was 289.2MB in the beginning and 267.9MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB.
 * Boogie Procedure Inliner took 51.83ms. Allocated memory is still 350.2MB. Free memory was 267.9MB in the beginning and 265.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB.
 * Boogie Preprocessor took 52.09ms. Allocated memory is still 350.2MB. Free memory was 265.5MB in the beginning and 263.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB.
 * RCFGBuilder took 562.57ms. Allocated memory was 350.2MB in the beginning and 608.2MB in the end (delta: 257.9MB). Free memory was 263.4MB in the beginning and 536.5MB in the end (delta: -273.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB.
 * TraceAbstraction took 4221.40ms. Allocated memory is still 608.2MB. Free memory was 536.5MB in the beginning and 463.7MB in the end (delta: 72.9MB). Peak memory consumption was 72.6MB. Max. memory is 16.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: PetriNetLargeBlockEncoding benchmarks
    Lipton Reduction Statistics: ReductionTime: 3.1s, 107 PlacesBefore, 24 PlacesAfterwards, 114 TransitionsBefore, 28 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 104 TotalNumberOfCompositions, 2167 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1862, independent: 1748, independent conditional: 0, independent unconditional: 1748, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1107, independent: 1072, independent conditional: 0, independent unconditional: 1072, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1862, independent: 676, independent conditional: 0, independent unconditional: 676, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 1107, unknown conditional: 0, unknown unconditional: 1107] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0
  - CounterExampleResult [Line: 759]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L714]               0  int memory[(2*960+1)];
[L715]               0  int next_alloc_idx = 1;
[L716]               0  int m = 0;
[L717]               0  int top;
[L769]               0  int m2 = 0;
[L770]               0  int state = 0;
[L788]               0  pthread_t t;
        VAL             [m2={5:0}, m={3:0}, next_alloc_idx=1, state=0, t={6:0}, top={4:0}]
[L789]  COND TRUE    0  1
[L789]  FCALL, FORK  0  pthread_create(&t, 0, thr1, 0)
        VAL             [m2={5:0}, m={3:0}, next_alloc_idx=1, pthread_create(&t, 0, thr1, 0)=0, state=0, t={6:0}, top={4:0}]
[L773]  CALL         1  __VERIFIER_atomic_acquire(&m2)
[L691]  EXPR         1  \read(*m)
[L691]  CALL         1  assume_abort_if_not(*m==0)
[L4]    COND FALSE   1  !(!cond)
[L691]  RET          1  assume_abort_if_not(*m==0)
[L692]               1  *m = 1
[L773]  RET          1  __VERIFIER_atomic_acquire(&m2)
[L776]               1  case 0:
[L777]  CALL         1  EBStack_init()
[L732]               1  top = 0
[L777]  RET          1  EBStack_init()
[L778]               1  state = 1
[L779]               1  case 1:
[L780]  CALL         1  __VERIFIER_atomic_release(&m2)
[L696]  EXPR         1  \read(*m)
[L696]  CALL         1  assume_abort_if_not(*m==1)
[L4]    COND FALSE   1  !(!cond)
[L696]  RET          1  assume_abort_if_not(*m==1)
[L697]               1  *m = 0
[L780]  RET          1  __VERIFIER_atomic_release(&m2)
[L781]  CALL         1  push_loop()
[L762]               1  int r = -1;
[L763]               1  int arg = __VERIFIER_nondet_int();
[L764]  COND TRUE    1  1
[L765]  CALL, EXPR   1  push(arg)
[L741]               1  int oldTop = -1, newTop = -1, casret = -1;
[L742]  CALL, EXPR   1  index_malloc()
[L719]               1  int curr_alloc_idx = -1;
        VAL             [curr_alloc_idx=-1, m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, top={4:0}]
[L720]  CALL         1  __VERIFIER_atomic_acquire(&m)
[L691]  EXPR         1  \read(*m)
[L691]  CALL         1  assume_abort_if_not(*m==0)
[L4]    COND FALSE   1  !(!cond)
[L691]  RET          1  assume_abort_if_not(*m==0)
[L692]               1  *m = 1
[L720]  RET          1  __VERIFIER_atomic_acquire(&m)
[L721]  COND FALSE   1  !(next_alloc_idx+2-1 > (2*960+1))
[L725]               1  curr_alloc_idx = next_alloc_idx
        VAL             [curr_alloc_idx=1, m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, top={4:0}]
[L726]               1  next_alloc_idx += 2
[L727]  CALL         1  __VERIFIER_atomic_release(&m)
[L696]  EXPR         1  \read(*m)
[L696]  CALL         1  assume_abort_if_not(*m==1)
[L4]    COND FALSE   1  !(!cond)
[L696]  RET          1  assume_abort_if_not(*m==1)
[L697]               1  *m = 0
[L727]  RET          1  __VERIFIER_atomic_release(&m)
[L729]               1  return curr_alloc_idx;
[L742]  RET, EXPR    1  index_malloc()
[L742]               1  newTop = index_malloc()
[L743]  COND FALSE   1  !(newTop == 0)
[L746]               1  memory[newTop+0] = d
        VAL             [\old(d)=7, casret={9:0}, d=7, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}]
[L747]  COND TRUE    1  1
[L748]  EXPR         1  \read(top)
[L748]               1  oldTop = top
[L749]               1  memory[newTop+1] = oldTop
[L750]  CALL         1  __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret)
[L705]  EXPR         1  \read(*v)
[L705]  COND TRUE    1  *v == e
[L707]               1  *v = u
[L707]               1  *r = 1
[L750]  RET          1  __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret)
[L751]  EXPR         1  \read(casret)
[L751]  COND TRUE    1  casret==1
        VAL             [\old(d)=7, \read(casret)=1, casret={9:0}, d=7, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}]
[L752]               1  return 1;
[L741]               1  int oldTop = -1, newTop = -1, casret = -1;
[L752]               1  return 1;
[L765]  RET, EXPR    1  push(arg)
[L765]               1  r = push(arg)
        VAL             [arg=7, m2={5:0}, m={3:0}, next_alloc_idx=3, push(arg)=1, r=1, state=1, top={4:0}]
[L766]  CALL         1  __VERIFIER_atomic_assert(r)
[L759]  EXPR         1  !r || !isEmpty()
[L759]  CALL, EXPR   1  isEmpty()
[L735]  EXPR         1  \read(top)
[L735]  COND FALSE   1  !(top == 0)
[L738]               1  return 0;
[L759]  RET, EXPR    1  isEmpty()
[L759]  EXPR         1  !r || !isEmpty()
[L759]  COND TRUE    1  !(!(!r || !isEmpty()))
[L759]               1  reach_error()
        VAL             [\old(r)=1, m2={5:0}, m={3:0}, next_alloc_idx=3, r=1, state=1, top={4:0}]

  - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
    CFG has 3 procedures, 175 locations, 3 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: 4.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=3, InterpolantAutomatonStates: 12, 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, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 76 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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!
[2023-01-28 06:33:35,522 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...