./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 559b036c
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f8226cdfe97f42edd1b15fbab303246bf7577cc25c46c21444e4109afadd604
--- Real Ultimate output ---
This is Ultimate 0.2.3-?-559b036-m
[2023-11-23 02:45:48,722 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-23 02:45:48,836 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf
[2023-11-23 02:45:48,843 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-23 02:45:48,845 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-23 02:45:48,870 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-23 02:45:48,870 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-23 02:45:48,871 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-23 02:45:48,871 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-23 02:45:48,872 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-23 02:45:48,872 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-23 02:45:48,873 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-23 02:45:48,873 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-23 02:45:48,873 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-23 02:45:48,874 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-23 02:45:48,874 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-23 02:45:48,877 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-23 02:45:48,880 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-23 02:45:48,881 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-23 02:45:48,881 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-23 02:45:48,883 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-23 02:45:48,883 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-23 02:45:48,884 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-23 02:45:48,884 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-23 02:45:48,885 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-23 02:45:48,886 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-23 02:45:48,886 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-23 02:45:48,887 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-23 02:45:48,887 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-23 02:45:48,887 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 02:45:48,888 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-23 02:45:48,889 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-23 02:45:48,889 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-23 02:45:48,889 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-23 02:45:48,889 INFO  L153        SettingsManager]:  * DFS Order used in POR=LOOP_LOCKSTEP
[2023-11-23 02:45:48,890 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-23 02:45:48,890 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-23 02:45:48,890 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2023-11-23 02:45:48,890 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-23 02:45:48,891 INFO  L153        SettingsManager]:  * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE
[2023-11-23 02:45:48,891 INFO  L153        SettingsManager]:  * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER
[2023-11-23 02:45:48,892 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/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f8226cdfe97f42edd1b15fbab303246bf7577cc25c46c21444e4109afadd604
[2023-11-23 02:45:49,155 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-23 02:45:49,182 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-23 02:45:49,184 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-23 02:45:49,185 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-23 02:45:49,186 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-23 02:45:49,187 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i
[2023-11-23 02:45:50,230 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-23 02:45:50,434 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-23 02:45:50,435 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i
[2023-11-23 02:45:50,445 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e07f8d034/25ee67f7beae4ebf8d26f3908108886a/FLAG6c582d798
[2023-11-23 02:45:50,457 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e07f8d034/25ee67f7beae4ebf8d26f3908108886a
[2023-11-23 02:45:50,460 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-23 02:45:50,461 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-23 02:45:50,463 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-23 02:45:50,464 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-23 02:45:50,468 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-23 02:45:50,470 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:50,472 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1faf5fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50, skipping insertion in model container
[2023-11-23 02:45:50,472 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:50,517 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-23 02:45:50,794 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-ext/35_double_lock_p3_vs-pthread.i[30711,30724]
[2023-11-23 02:45:50,802 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-23 02:45:50,811 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-23 02:45:50,846 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-ext/35_double_lock_p3_vs-pthread.i[30711,30724]
[2023-11-23 02:45:50,851 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-23 02:45:50,938 INFO  L206         MainTranslator]: Completed translation
[2023-11-23 02:45:50,938 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50 WrapperNode
[2023-11-23 02:45:50,939 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-23 02:45:50,940 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-23 02:45:50,940 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-23 02:45:50,940 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-23 02:45:50,954 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:50,977 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:50,990 INFO  L138                Inliner]: procedures = 165, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69
[2023-11-23 02:45:50,990 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-23 02:45:50,991 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-23 02:45:50,991 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-23 02:45:50,991 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-23 02:45:50,997 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:50,998 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:50,999 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:51,000 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:51,003 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:51,005 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:51,006 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:51,007 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:51,009 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-23 02:45:51,009 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-23 02:45:51,009 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-23 02:45:51,009 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-23 02:45:51,010 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (1/1) ...
[2023-11-23 02:45:51,016 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 02:45:51,025 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2023-11-23 02:45:51,063 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-23 02:45:51,080 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-23 02:45:51,100 INFO  L130     BoogieDeclarations]: Found specification of procedure thr2
[2023-11-23 02:45:51,100 INFO  L138     BoogieDeclarations]: Found implementation of procedure thr2
[2023-11-23 02:45:51,100 INFO  L130     BoogieDeclarations]: Found specification of procedure thr1
[2023-11-23 02:45:51,100 INFO  L138     BoogieDeclarations]: Found implementation of procedure thr1
[2023-11-23 02:45:51,100 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-11-23 02:45:51,101 INFO  L130     BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-11-23 02:45:51,101 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-23 02:45:51,102 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-23 02:45:51,102 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-23 02:45:51,102 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-23 02:45:51,103 INFO  L130     BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock
[2023-11-23 02:45:51,104 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-23 02:45:51,104 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-23 02:45:51,105 WARN  L213             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-11-23 02:45:51,197 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-23 02:45:51,199 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-23 02:45:51,318 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-23 02:45:51,435 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-23 02:45:51,435 INFO  L309             CfgBuilder]: Removed 2 assume(true) statements.
[2023-11-23 02:45:51,435 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:51 BoogieIcfgContainer
[2023-11-23 02:45:51,436 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-23 02:45:51,437 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-23 02:45:51,437 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-23 02:45:51,440 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-23 02:45:51,441 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:45:50" (1/3) ...
[2023-11-23 02:45:51,442 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187cd260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:45:51, skipping insertion in model container
[2023-11-23 02:45:51,442 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:50" (2/3) ...
[2023-11-23 02:45:51,442 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187cd260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:45:51, skipping insertion in model container
[2023-11-23 02:45:51,442 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:51" (3/3) ...
[2023-11-23 02:45:51,443 INFO  L112   eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs-pthread.i
[2023-11-23 02:45:51,450 WARN  L145   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-11-23 02:45:51,457 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-23 02:45:51,459 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-23 02:45:51,459 INFO  L514   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-23 02:45:51,503 INFO  L144    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-23 02:45:51,541 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:51,542 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-11-23 02:45:51,542 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2023-11-23 02:45:51,559 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-11-23 02:45:51,582 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process
[2023-11-23 02:45:51,599 INFO  L159   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-11-23 02:45:51,608 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork1 ========
[2023-11-23 02:45:51,613 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6358b5bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:51,613 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-23 02:45:51,708 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-23 02:45:51,712 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 02:45:51,713 INFO  L85        PathProgramCache]: Analyzing trace with hash 808403279, now seen corresponding path program 1 times
[2023-11-23 02:45:51,719 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-23 02:45:51,720 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918126043]
[2023-11-23 02:45:51,720 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 02:45:51,720 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 02:45:51,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 02:45:51,937 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 02:45:51,938 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-23 02:45:51,938 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918126043]
[2023-11-23 02:45:51,939 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918126043] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 02:45:51,939 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 02:45:51,939 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-23 02:45:51,940 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108603215]
[2023-11-23 02:45:51,941 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 02:45:51,944 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-23 02:45:51,944 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-23 02:45:51,962 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-23 02:45:51,963 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 02:45:51,964 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-23 02:45:51,965 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-11-23 02:45:51,966 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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)
[2023-11-23 02:45:51,966 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-11-23 02:45:52,326 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-23 02:45:52,329 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-11-23 02:45:52,330 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-23 02:45:52,339 INFO  L445         BasicCegarLoop]: Path program histogram: [1]
[2023-11-23 02:45:52,341 INFO  L307   ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was SAFE (1/2)
[2023-11-23 02:45:52,345 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:52,345 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-11-23 02:45:52,345 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2023-11-23 02:45:52,398 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-11-23 02:45:52,401 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process
[2023-11-23 02:45:52,415 INFO  L159   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-11-23 02:45:52,416 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ========
[2023-11-23 02:45:52,416 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6358b5bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:52,416 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-11-23 02:45:52,500 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-11-23 02:45:52,501 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 02:45:52,502 INFO  L85        PathProgramCache]: Analyzing trace with hash -148663870, now seen corresponding path program 1 times
[2023-11-23 02:45:52,502 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-23 02:45:52,502 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573106617]
[2023-11-23 02:45:52,502 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 02:45:52,503 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 02:45:52,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 02:45:52,608 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-23 02:45:52,608 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-23 02:45:52,608 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573106617]
[2023-11-23 02:45:52,608 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573106617] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 02:45:52,609 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 02:45:52,609 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-23 02:45:52,609 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911625122]
[2023-11-23 02:45:52,609 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 02:45:52,609 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-23 02:45:52,609 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-23 02:45:52,610 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-23 02:45:52,610 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 02:45:52,610 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-23 02:45:52,610 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-11-23 02:45:52,611 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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)
[2023-11-23 02:45:52,611 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-11-23 02:45:52,669 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-23 02:45:52,669 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-23 02:45:52,670 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-11-23 02:45:52,670 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 02:45:52,670 INFO  L85        PathProgramCache]: Analyzing trace with hash -1348101510, now seen corresponding path program 1 times
[2023-11-23 02:45:52,670 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-23 02:45:52,670 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963426853]
[2023-11-23 02:45:52,671 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 02:45:52,671 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 02:45:52,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-23 02:45:52,749 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-23 02:45:52,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-23 02:45:52,782 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-23 02:45:52,798 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-11-23 02:45:52,798 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining)
[2023-11-23 02:45:52,799 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining)
[2023-11-23 02:45:52,799 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-23 02:45:52,806 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1]
[2023-11-23 02:45:52,806 INFO  L307   ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/2)
[2023-11-23 02:45:52,807 WARN  L233   ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-11-23 02:45:52,807 INFO  L514   ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2023-11-23 02:45:52,825 INFO  L144    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-23 02:45:52,828 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:52,829 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-11-23 02:45:52,829 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2023-11-23 02:45:52,845 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-11-23 02:45:52,873 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process
[2023-11-23 02:45:52,874 INFO  L159   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-11-23 02:45:52,875 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ========
[2023-11-23 02:45:52,875 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6358b5bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:52,875 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-11-23 02:45:52,997 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-11-23 02:45:52,998 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 02:45:52,998 INFO  L85        PathProgramCache]: Analyzing trace with hash -751704227, now seen corresponding path program 1 times
[2023-11-23 02:45:52,998 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-23 02:45:52,999 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906949508]
[2023-11-23 02:45:52,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 02:45:52,999 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 02:45:53,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 02:45:53,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-11-23 02:45:53,110 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-23 02:45:53,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906949508]
[2023-11-23 02:45:53,110 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906949508] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 02:45:53,111 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 02:45:53,111 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-23 02:45:53,113 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294869469]
[2023-11-23 02:45:53,113 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 02:45:53,114 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-23 02:45:53,114 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-23 02:45:53,114 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-23 02:45:53,115 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 02:45:53,115 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-23 02:45:53,115 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-11-23 02:45:53,115 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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)
[2023-11-23 02:45:53,116 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-11-23 02:45:53,199 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-23 02:45:53,200 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-23 02:45:53,200 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-11-23 02:45:53,200 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 02:45:53,200 INFO  L85        PathProgramCache]: Analyzing trace with hash 453436621, now seen corresponding path program 1 times
[2023-11-23 02:45:53,201 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-23 02:45:53,201 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508597258]
[2023-11-23 02:45:53,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 02:45:53,201 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 02:45:53,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-23 02:45:53,237 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-23 02:45:53,250 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-23 02:45:53,261 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-23 02:45:53,263 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-11-23 02:45:53,263 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining)
[2023-11-23 02:45:53,264 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining)
[2023-11-23 02:45:53,264 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-23 02:45:53,265 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1]
[2023-11-23 02:45:53,265 INFO  L307   ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/3)
[2023-11-23 02:45:53,266 WARN  L233   ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-11-23 02:45:53,266 INFO  L514   ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2023-11-23 02:45:53,293 INFO  L144    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-23 02:45:53,296 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,296 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-11-23 02:45:53,296 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2023-11-23 02:45:53,297 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-11-23 02:45:53,299 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process
[2023-11-23 02:45:53,301 INFO  L159   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-11-23 02:45:53,302 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork1 ========
[2023-11-23 02:45:53,302 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6358b5bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,302 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-23 02:45:53,302 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-11-23 02:45:53,303 INFO  L445         BasicCegarLoop]: Path program histogram: []
[2023-11-23 02:45:53,303 INFO  L307   ceAbstractionStarter]: Result for error location thr1Thread3of3ForFork1 was SAFE (1/4)
[2023-11-23 02:45:53,305 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,305 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-11-23 02:45:53,305 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2023-11-23 02:45:53,307 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-11-23 02:45:53,308 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process
[2023-11-23 02:45:53,315 INFO  L159   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-11-23 02:45:53,315 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ========
[2023-11-23 02:45:53,315 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6358b5bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,315 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-11-23 02:45:53,516 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-11-23 02:45:53,517 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 02:45:53,517 INFO  L85        PathProgramCache]: Analyzing trace with hash -1994984374, now seen corresponding path program 1 times
[2023-11-23 02:45:53,517 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-23 02:45:53,517 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885851373]
[2023-11-23 02:45:53,518 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 02:45:53,518 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 02:45:53,558 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 02:45:53,637 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-11-23 02:45:53,638 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-23 02:45:53,638 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885851373]
[2023-11-23 02:45:53,638 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885851373] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 02:45:53,638 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 02:45:53,638 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-23 02:45:53,639 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996215717]
[2023-11-23 02:45:53,639 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 02:45:53,639 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-23 02:45:53,640 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-23 02:45:53,640 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-23 02:45:53,641 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 02:45:53,641 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-23 02:45:53,641 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-11-23 02:45:53,641 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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)
[2023-11-23 02:45:53,641 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2023-11-23 02:45:53,753 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-23 02:45:53,753 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-23 02:45:53,753 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-11-23 02:45:53,754 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 02:45:53,754 INFO  L85        PathProgramCache]: Analyzing trace with hash 2096259864, now seen corresponding path program 1 times
[2023-11-23 02:45:53,754 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-23 02:45:53,755 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057686151]
[2023-11-23 02:45:53,755 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 02:45:53,755 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 02:45:53,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-23 02:45:53,796 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-23 02:45:53,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-23 02:45:53,842 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-23 02:45:53,843 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-11-23 02:45:53,843 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining)
[2023-11-23 02:45:53,843 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining)
[2023-11-23 02:45:53,843 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-23 02:45:53,845 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1]
[2023-11-23 02:45:53,845 INFO  L307   ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/4)
[2023-11-23 02:45:53,845 WARN  L233   ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-11-23 02:45:53,845 INFO  L514   ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances.
[2023-11-23 02:45:53,874 INFO  L144    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-23 02:45:53,880 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,880 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-11-23 02:45:53,880 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2023-11-23 02:45:53,881 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-11-23 02:45:53,883 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process
[2023-11-23 02:45:53,884 INFO  L159   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-11-23 02:45:53,885 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of4ForFork1 ========
[2023-11-23 02:45:53,885 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6358b5bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,885 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-23 02:45:53,886 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-11-23 02:45:53,886 INFO  L445         BasicCegarLoop]: Path program histogram: []
[2023-11-23 02:45:53,887 INFO  L307   ceAbstractionStarter]: Result for error location thr1Thread3of4ForFork1 was SAFE (1/5)
[2023-11-23 02:45:53,888 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,888 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-11-23 02:45:53,888 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2023-11-23 02:45:53,891 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-11-23 02:45:53,916 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process
[2023-11-23 02:45:53,921 INFO  L159   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-11-23 02:45:53,921 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread4of4ForFork1 ========
[2023-11-23 02:45:53,922 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6358b5bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,922 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-23 02:45:53,922 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-11-23 02:45:53,923 INFO  L445         BasicCegarLoop]: Path program histogram: []
[2023-11-23 02:45:53,923 INFO  L307   ceAbstractionStarter]: Result for error location thr1Thread4of4ForFork1 was SAFE (2/5)
[2023-11-23 02:45:53,927 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,927 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-11-23 02:45:53,927 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2023-11-23 02:45:53,929 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-11-23 02:45:53,955 INFO  L159   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-11-23 02:45:53,955 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread2of4ForFork1 ========
[2023-11-23 02:45:53,955 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6358b5bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,956 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-23 02:45:53,956 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-11-23 02:45:53,957 INFO  L445         BasicCegarLoop]: Path program histogram: []
[2023-11-23 02:45:53,957 INFO  L307   ceAbstractionStarter]: Result for error location thr1Thread2of4ForFork1 was SAFE (3/5)
[2023-11-23 02:45:53,959 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,959 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2023-11-23 02:45:53,959 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2023-11-23 02:45:53,961 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process
[2023-11-23 02:45:53,977 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2023-11-23 02:45:53,979 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process
[2023-11-23 02:45:53,980 INFO  L159   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2023-11-23 02:45:53,981 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of4ForFork1 ========
[2023-11-23 02:45:53,981 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6358b5bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 02:45:53,981 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-23 02:45:54,082 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-23 02:45:54,083 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 02:45:54,083 INFO  L85        PathProgramCache]: Analyzing trace with hash -2136629881, now seen corresponding path program 1 times
[2023-11-23 02:45:54,083 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-23 02:45:54,083 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948526647]
[2023-11-23 02:45:54,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 02:45:54,084 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 02:45:54,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 02:45:54,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 02:45:54,113 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-23 02:45:54,114 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948526647]
[2023-11-23 02:45:54,114 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948526647] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 02:45:54,114 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 02:45:54,114 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-23 02:45:54,114 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903316537]
[2023-11-23 02:45:54,114 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 02:45:54,115 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-23 02:45:54,115 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-23 02:45:54,117 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-23 02:45:54,117 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 02:45:54,117 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-23 02:45:54,117 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2023-11-23 02:45:54,117 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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)
[2023-11-23 02:45:54,117 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.