/usr/bin/java -Xmx7000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.prune.known.deadend.states.from.previous.iterations false -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/twostage_3.i


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


This is Ultimate 0.2.3-wip.dk.dynamic-abstractions-e2ee32c-m
[2023-09-07 08:22:48,599 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-09-07 08:22:48,663 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf
[2023-09-07 08:22:48,667 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-09-07 08:22:48,668 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-09-07 08:22:48,668 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty.
[2023-09-07 08:22:48,689 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-09-07 08:22:48,690 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-09-07 08:22:48,690 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-09-07 08:22:48,693 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-09-07 08:22:48,694 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-09-07 08:22:48,694 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-09-07 08:22:48,695 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-09-07 08:22:48,696 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-09-07 08:22:48,696 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-09-07 08:22:48,696 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-09-07 08:22:48,696 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-09-07 08:22:48,696 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-09-07 08:22:48,696 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-09-07 08:22:48,697 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-09-07 08:22:48,697 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-09-07 08:22:48,698 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-09-07 08:22:48,698 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-09-07 08:22:48,698 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-09-07 08:22:48,698 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-09-07 08:22:48,698 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-09-07 08:22:48,699 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-09-07 08:22:48,699 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-09-07 08:22:48,699 INFO  L153        SettingsManager]:  * To the following directory=./dump/
[2023-09-07 08:22:48,699 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-09-07 08:22:48,700 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-09-07 08:22:48,700 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-09-07 08:22:48,700 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-09-07 08:22:48,700 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-09-07 08:22:48,701 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-09-07 08:22:48,701 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-09-07 08:22:48,701 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-09-07 08:22:48,701 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2023-09-07 08:22:48,701 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-09-07 08:22:48,701 INFO  L153        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES
[2023-09-07 08:22:48,701 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Prune known deadend states from previous iterations -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION
[2023-09-07 08:22:48,886 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-09-07 08:22:48,909 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-09-07 08:22:48,911 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-09-07 08:22:48,912 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-09-07 08:22:48,912 INFO  L274        PluginConnector]: CDTParser initialized
[2023-09-07 08:22:48,913 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/twostage_3.i
[2023-09-07 08:22:49,945 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-09-07 08:22:50,215 INFO  L384              CDTParser]: Found 1 translation units.
[2023-09-07 08:22:50,215 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i
[2023-09-07 08:22:50,232 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d68f029b/ef79570b34c546c99f52e944595a08ad/FLAGee2ddd967
[2023-09-07 08:22:50,246 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d68f029b/ef79570b34c546c99f52e944595a08ad
[2023-09-07 08:22:50,251 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-09-07 08:22:50,252 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-09-07 08:22:50,253 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-09-07 08:22:50,254 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-09-07 08:22:50,257 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-09-07 08:22:50,257 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,258 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398a304d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50, skipping insertion in model container
[2023-09-07 08:22:50,258 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,302 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-09-07 08:22:50,640 WARN  L240   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i[58991,59004]
[2023-09-07 08:22:50,666 WARN  L1576              CHandler]: Possible shadowing of function lock
[2023-09-07 08:22:50,666 WARN  L1576              CHandler]: Possible shadowing of function lock
[2023-09-07 08:22:50,667 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-09-07 08:22:50,673 INFO  L202         MainTranslator]: Completed pre-run
[2023-09-07 08:22:50,681 WARN  L75    lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [133]
[2023-09-07 08:22:50,692 WARN  L75    lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [510]
[2023-09-07 08:22:50,692 WARN  L75    lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [510]
[2023-09-07 08:22:50,703 WARN  L240   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i[58991,59004]
[2023-09-07 08:22:50,711 WARN  L1576              CHandler]: Possible shadowing of function lock
[2023-09-07 08:22:50,712 WARN  L1576              CHandler]: Possible shadowing of function lock
[2023-09-07 08:22:50,713 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-09-07 08:22:50,772 WARN  L669               CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler.
[2023-09-07 08:22:50,777 INFO  L206         MainTranslator]: Completed translation
[2023-09-07 08:22:50,777 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50 WrapperNode
[2023-09-07 08:22:50,777 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-09-07 08:22:50,778 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-09-07 08:22:50,778 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-09-07 08:22:50,778 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-09-07 08:22:50,782 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,811 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,844 INFO  L138                Inliner]: procedures = 374, calls = 61, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 192
[2023-09-07 08:22:50,844 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-09-07 08:22:50,845 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-09-07 08:22:50,845 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-09-07 08:22:50,845 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-09-07 08:22:50,854 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,854 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,860 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,860 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,865 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,867 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,868 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,869 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,872 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-09-07 08:22:50,872 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-09-07 08:22:50,872 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-09-07 08:22:50,872 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-09-07 08:22:50,873 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (1/1) ...
[2023-09-07 08:22:50,877 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-09-07 08:22:50,886 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-09-07 08:22:50,954 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)
[2023-09-07 08:22:50,978 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
[2023-09-07 08:22:50,991 INFO  L130     BoogieDeclarations]: Found specification of procedure funcA
[2023-09-07 08:22:50,991 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcA
[2023-09-07 08:22:50,991 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB
[2023-09-07 08:22:50,992 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB
[2023-09-07 08:22:50,992 INFO  L130     BoogieDeclarations]: Found specification of procedure fprintf
[2023-09-07 08:22:50,992 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-09-07 08:22:50,992 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2023-09-07 08:22:50,992 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-09-07 08:22:50,992 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-09-07 08:22:50,992 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-09-07 08:22:50,992 INFO  L130     BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-09-07 08:22:50,992 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-09-07 08:22:50,992 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-09-07 08:22:50,992 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-09-07 08:22:50,993 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-09-07 08:22:50,993 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-09-07 08:22:51,013 WARN  L210             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-09-07 08:22:51,167 INFO  L236             CfgBuilder]: Building ICFG
[2023-09-07 08:22:51,169 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-09-07 08:22:51,477 INFO  L277             CfgBuilder]: Performing block encoding
[2023-09-07 08:22:51,483 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-09-07 08:22:51,483 INFO  L302             CfgBuilder]: Removed 4 assume(true) statements.
[2023-09-07 08:22:51,485 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 08:22:51 BoogieIcfgContainer
[2023-09-07 08:22:51,485 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-09-07 08:22:51,487 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-09-07 08:22:51,487 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-09-07 08:22:51,489 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-09-07 08:22:51,489 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 08:22:50" (1/3) ...
[2023-09-07 08:22:51,489 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268422db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 08:22:51, skipping insertion in model container
[2023-09-07 08:22:51,489 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:22:50" (2/3) ...
[2023-09-07 08:22:51,490 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268422db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 08:22:51, skipping insertion in model container
[2023-09-07 08:22:51,490 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 08:22:51" (3/3) ...
[2023-09-07 08:22:51,490 INFO  L112   eAbstractionObserver]: Analyzing ICFG twostage_3.i
[2023-09-07 08:22:51,495 WARN  L145   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-09-07 08:22:51,501 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-09-07 08:22:51,502 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-09-07 08:22:51,502 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-09-07 08:22:51,557 INFO  L144    ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions.
[2023-09-07 08:22:51,584 INFO  L103   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-09-07 08:22:51,585 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-09-07 08:22:51,585 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-09-07 08:22:51,587 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-09-07 08:22:51,620 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process
[2023-09-07 08:22:51,632 INFO  L166   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-09-07 08:22:51,636 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ========
[2023-09-07 08:22:51,640 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@8163abb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-09-07 08:22:51,640 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-09-07 08:22:51,668 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:22:51,671 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:22:51,672 INFO  L85        PathProgramCache]: Analyzing trace with hash 63430987, now seen corresponding path program 1 times
[2023-09-07 08:22:51,677 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:22:51,677 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766410770]
[2023-09-07 08:22:51,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:22:51,678 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:22:51,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-09-07 08:22:51,830 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-09-07 08:22:51,830 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-09-07 08:22:51,831 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766410770]
[2023-09-07 08:22:51,831 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766410770] provided 1 perfect and 0 imperfect interpolant sequences
[2023-09-07 08:22:51,831 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-09-07 08:22:51,831 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-09-07 08:22:51,832 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969864179]
[2023-09-07 08:22:51,833 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-09-07 08:22:51,840 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-09-07 08:22:51,840 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-09-07 08:22:51,860 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-09-07 08:22:51,860 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-09-07 08:22:51,861 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:51,862 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-09-07 08:22:51,863 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 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)
[2023-09-07 08:22:51,863 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:51,890 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:51,891 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-09-07 08:22:51,891 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:22:51,891 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:22:51,891 INFO  L85        PathProgramCache]: Analyzing trace with hash 1241768213, now seen corresponding path program 1 times
[2023-09-07 08:22:51,892 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:22:51,892 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828273796]
[2023-09-07 08:22:51,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:22:51,892 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:22:51,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-09-07 08:22:51,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-09-07 08:22:51,994 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-09-07 08:22:51,994 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828273796]
[2023-09-07 08:22:51,994 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828273796] provided 1 perfect and 0 imperfect interpolant sequences
[2023-09-07 08:22:51,994 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-09-07 08:22:51,994 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-09-07 08:22:51,994 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915655606]
[2023-09-07 08:22:51,994 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-09-07 08:22:51,995 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-09-07 08:22:51,995 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-09-07 08:22:51,996 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-09-07 08:22:51,996 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-09-07 08:22:51,996 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:51,997 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-09-07 08:22:51,997 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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)
[2023-09-07 08:22:51,997 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:51,997 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:52,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:52,038 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-09-07 08:22:52,038 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-09-07 08:22:52,038 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:22:52,039 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:22:52,039 INFO  L85        PathProgramCache]: Analyzing trace with hash -945929743, now seen corresponding path program 1 times
[2023-09-07 08:22:52,039 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:22:52,039 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124232431]
[2023-09-07 08:22:52,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:22:52,040 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:22:52,145 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-09-07 08:22:52,146 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-09-07 08:22:52,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-09-07 08:22:52,233 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-09-07 08:22:52,233 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-09-07 08:22:52,235 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining)
[2023-09-07 08:22:52,236 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-09-07 08:22:52,241 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2023-09-07 08:22:52,243 INFO  L307   ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (1/4)
[2023-09-07 08:22:52,243 WARN  L233   ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-09-07 08:22:52,243 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2023-09-07 08:22:52,288 INFO  L144    ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions.
[2023-09-07 08:22:52,299 INFO  L103   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-09-07 08:22:52,299 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-09-07 08:22:52,300 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-09-07 08:22:52,343 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-09-07 08:22:52,344 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process
[2023-09-07 08:22:52,346 INFO  L166   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-09-07 08:22:52,346 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ========
[2023-09-07 08:22:52,347 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@8163abb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-09-07 08:22:52,347 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-09-07 08:22:52,374 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:22:52,375 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:22:52,375 INFO  L85        PathProgramCache]: Analyzing trace with hash -1195570553, now seen corresponding path program 1 times
[2023-09-07 08:22:52,375 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:22:52,375 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833622847]
[2023-09-07 08:22:52,375 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:22:52,375 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:22:52,412 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-09-07 08:22:52,454 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2023-09-07 08:22:52,454 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-09-07 08:22:52,454 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833622847]
[2023-09-07 08:22:52,454 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833622847] provided 1 perfect and 0 imperfect interpolant sequences
[2023-09-07 08:22:52,455 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-09-07 08:22:52,455 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-09-07 08:22:52,455 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561356025]
[2023-09-07 08:22:52,455 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-09-07 08:22:52,458 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-09-07 08:22:52,459 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-09-07 08:22:52,459 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-09-07 08:22:52,459 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-09-07 08:22:52,459 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:52,459 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-09-07 08:22:52,460 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 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)
[2023-09-07 08:22:52,460 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:52,613 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:52,614 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-09-07 08:22:52,614 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:22:52,614 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:22:52,614 INFO  L85        PathProgramCache]: Analyzing trace with hash -1604030307, now seen corresponding path program 1 times
[2023-09-07 08:22:52,614 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:22:52,614 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607819949]
[2023-09-07 08:22:52,615 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:22:52,615 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:22:52,661 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-09-07 08:22:52,712 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2023-09-07 08:22:52,712 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-09-07 08:22:52,712 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607819949]
[2023-09-07 08:22:52,712 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607819949] provided 1 perfect and 0 imperfect interpolant sequences
[2023-09-07 08:22:52,713 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-09-07 08:22:52,713 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-09-07 08:22:52,713 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995899576]
[2023-09-07 08:22:52,713 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-09-07 08:22:52,713 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-09-07 08:22:52,713 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-09-07 08:22:52,714 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-09-07 08:22:52,714 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-09-07 08:22:52,714 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:52,714 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-09-07 08:22:52,714 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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)
[2023-09-07 08:22:52,715 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:52,715 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:52,780 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:52,780 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-09-07 08:22:52,780 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-09-07 08:22:52,780 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:22:52,781 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:22:52,781 INFO  L85        PathProgramCache]: Analyzing trace with hash 1599081977, now seen corresponding path program 1 times
[2023-09-07 08:22:52,781 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:22:52,781 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913001028]
[2023-09-07 08:22:52,781 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:22:52,781 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:22:52,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-09-07 08:22:52,837 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-09-07 08:22:52,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-09-07 08:22:52,872 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-09-07 08:22:52,872 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-09-07 08:22:52,872 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining)
[2023-09-07 08:22:52,872 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-09-07 08:22:52,873 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2023-09-07 08:22:52,873 INFO  L307   ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (1/5)
[2023-09-07 08:22:52,873 WARN  L233   ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-09-07 08:22:52,874 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2023-09-07 08:22:52,898 INFO  L144    ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions.
[2023-09-07 08:22:52,900 INFO  L103   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-09-07 08:22:52,900 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-09-07 08:22:52,901 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-09-07 08:22:52,919 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-09-07 08:22:52,939 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process
[2023-09-07 08:22:52,940 INFO  L166   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-09-07 08:22:52,941 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ========
[2023-09-07 08:22:52,941 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@8163abb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-09-07 08:22:52,941 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-09-07 08:22:52,948 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:22:52,949 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:22:52,949 INFO  L85        PathProgramCache]: Analyzing trace with hash -232204148, now seen corresponding path program 1 times
[2023-09-07 08:22:52,949 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:22:52,949 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005647262]
[2023-09-07 08:22:52,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:22:52,949 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:22:52,962 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-09-07 08:22:52,985 INFO  L134       CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2023-09-07 08:22:52,986 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-09-07 08:22:52,986 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005647262]
[2023-09-07 08:22:52,986 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005647262] provided 1 perfect and 0 imperfect interpolant sequences
[2023-09-07 08:22:52,986 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-09-07 08:22:52,986 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-09-07 08:22:52,986 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751001783]
[2023-09-07 08:22:52,986 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-09-07 08:22:52,987 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-09-07 08:22:52,987 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-09-07 08:22:52,987 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-09-07 08:22:52,987 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-09-07 08:22:52,987 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:52,987 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-09-07 08:22:52,988 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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)
[2023-09-07 08:22:52,988 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:54,012 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:54,012 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-09-07 08:22:54,012 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:22:54,013 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:22:54,013 INFO  L85        PathProgramCache]: Analyzing trace with hash -1379448936, now seen corresponding path program 1 times
[2023-09-07 08:22:54,013 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:22:54,013 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113650843]
[2023-09-07 08:22:54,013 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:22:54,013 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:22:54,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-09-07 08:22:54,067 INFO  L134       CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked.
[2023-09-07 08:22:54,068 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-09-07 08:22:54,068 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113650843]
[2023-09-07 08:22:54,068 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113650843] provided 1 perfect and 0 imperfect interpolant sequences
[2023-09-07 08:22:54,068 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-09-07 08:22:54,068 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-09-07 08:22:54,068 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298620173]
[2023-09-07 08:22:54,068 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-09-07 08:22:54,068 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-09-07 08:22:54,069 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-09-07 08:22:54,069 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-09-07 08:22:54,069 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-09-07 08:22:54,069 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:54,069 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-09-07 08:22:54,070 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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)
[2023-09-07 08:22:54,070 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:54,070 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:54,702 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:54,703 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-09-07 08:22:54,703 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-09-07 08:22:54,703 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:22:54,704 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:22:54,704 INFO  L85        PathProgramCache]: Analyzing trace with hash 925389876, now seen corresponding path program 1 times
[2023-09-07 08:22:54,704 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:22:54,704 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258719144]
[2023-09-07 08:22:54,704 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:22:54,705 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:22:54,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-09-07 08:22:54,793 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-09-07 08:22:54,819 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-09-07 08:22:54,833 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-09-07 08:22:54,833 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-09-07 08:22:54,833 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining)
[2023-09-07 08:22:54,833 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-09-07 08:22:54,834 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2023-09-07 08:22:54,834 INFO  L307   ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (1/6)
[2023-09-07 08:22:54,834 WARN  L233   ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-09-07 08:22:54,834 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances.
[2023-09-07 08:22:54,862 INFO  L144    ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions.
[2023-09-07 08:22:54,864 INFO  L103   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-09-07 08:22:54,865 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-09-07 08:22:54,865 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-09-07 08:22:54,867 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-09-07 08:22:54,890 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process
[2023-09-07 08:22:54,891 INFO  L166   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-09-07 08:22:54,891 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ========
[2023-09-07 08:22:54,892 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@8163abb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-09-07 08:22:54,892 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-09-07 08:22:54,905 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:22:54,905 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:22:54,905 INFO  L85        PathProgramCache]: Analyzing trace with hash -1638475814, now seen corresponding path program 1 times
[2023-09-07 08:22:54,905 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:22:54,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857291645]
[2023-09-07 08:22:54,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:22:54,906 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:22:54,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-09-07 08:22:54,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-09-07 08:22:54,933 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-09-07 08:22:54,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857291645]
[2023-09-07 08:22:54,933 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857291645] provided 1 perfect and 0 imperfect interpolant sequences
[2023-09-07 08:22:54,933 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-09-07 08:22:54,933 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-09-07 08:22:54,933 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394819276]
[2023-09-07 08:22:54,933 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-09-07 08:22:54,934 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-09-07 08:22:54,934 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-09-07 08:22:54,934 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-09-07 08:22:54,934 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-09-07 08:22:54,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:22:54,935 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-09-07 08:22:54,935 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-09-07 08:22:54,935 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:23:08,865 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:23:08,866 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-09-07 08:23:08,866 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:23:08,866 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:23:08,866 INFO  L85        PathProgramCache]: Analyzing trace with hash -953832186, now seen corresponding path program 1 times
[2023-09-07 08:23:08,866 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:23:08,867 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234926089]
[2023-09-07 08:23:08,867 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:23:08,867 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:23:08,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-09-07 08:23:08,911 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2023-09-07 08:23:08,911 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-09-07 08:23:08,912 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234926089]
[2023-09-07 08:23:08,912 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234926089] provided 1 perfect and 0 imperfect interpolant sequences
[2023-09-07 08:23:08,912 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-09-07 08:23:08,912 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-09-07 08:23:08,912 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708523005]
[2023-09-07 08:23:08,912 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-09-07 08:23:08,912 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-09-07 08:23:08,912 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-09-07 08:23:08,913 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-09-07 08:23:08,913 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-09-07 08:23:08,913 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:23:08,913 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-09-07 08:23:08,913 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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)
[2023-09-07 08:23:08,913 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:23:08,914 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:23:17,618 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:23:17,619 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-09-07 08:23:17,619 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-09-07 08:23:17,619 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:23:17,619 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:23:17,619 INFO  L85        PathProgramCache]: Analyzing trace with hash 1814621090, now seen corresponding path program 1 times
[2023-09-07 08:23:17,620 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:23:17,620 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712705912]
[2023-09-07 08:23:17,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:23:17,629 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:23:17,710 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-09-07 08:23:17,711 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-09-07 08:23:17,750 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-09-07 08:23:17,774 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-09-07 08:23:17,775 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-09-07 08:23:17,775 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining)
[2023-09-07 08:23:17,775 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-09-07 08:23:17,776 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2023-09-07 08:23:17,776 INFO  L307   ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (1/7)
[2023-09-07 08:23:17,776 WARN  L233   ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-09-07 08:23:17,776 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances.
[2023-09-07 08:23:17,813 INFO  L144    ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions.
[2023-09-07 08:23:17,816 INFO  L103   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-09-07 08:23:17,816 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-09-07 08:23:17,816 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-09-07 08:23:17,831 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-09-07 08:23:17,832 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process
[2023-09-07 08:23:17,851 INFO  L166   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-09-07 08:23:17,851 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ========
[2023-09-07 08:23:17,852 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@8163abb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-09-07 08:23:17,852 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-09-07 08:23:17,867 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-09-07 08:23:17,867 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-09-07 08:23:17,868 INFO  L85        PathProgramCache]: Analyzing trace with hash 170050801, now seen corresponding path program 1 times
[2023-09-07 08:23:17,868 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-09-07 08:23:17,868 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275789172]
[2023-09-07 08:23:17,868 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-09-07 08:23:17,868 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-09-07 08:23:17,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-09-07 08:23:17,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked.
[2023-09-07 08:23:17,902 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-09-07 08:23:17,902 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275789172]
[2023-09-07 08:23:17,902 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275789172] provided 1 perfect and 0 imperfect interpolant sequences
[2023-09-07 08:23:17,902 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-09-07 08:23:17,903 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-09-07 08:23:17,903 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031838274]
[2023-09-07 08:23:17,903 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-09-07 08:23:17,903 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-09-07 08:23:17,903 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-09-07 08:23:17,904 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-09-07 08:23:17,904 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-09-07 08:23:17,904 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-09-07 08:23:17,904 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-09-07 08:23:17,904 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 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)
[2023-09-07 08:23:17,904 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.