./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i --full-output --architecture 32bit


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


Checking for overflows
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f737570030041640fd86c7d2770b30b4e6ee4ac0d1c521887700aab87fb1426
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-26 11:46:11,698 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-26 11:46:11,774 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf
[2023-11-26 11:46:11,780 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-26 11:46:11,781 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-26 11:46:11,806 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-26 11:46:11,807 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-26 11:46:11,808 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-26 11:46:11,809 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-26 11:46:11,810 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-26 11:46:11,810 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-26 11:46:11,811 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-26 11:46:11,812 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-26 11:46:11,813 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-26 11:46:11,813 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-26 11:46:11,814 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-26 11:46:11,815 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-26 11:46:11,815 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-26 11:46:11,816 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-26 11:46:11,816 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-26 11:46:11,817 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-26 11:46:11,818 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-26 11:46:11,818 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-26 11:46:11,819 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-26 11:46:11,820 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-11-26 11:46:11,820 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-26 11:46:11,821 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-26 11:46:11,821 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-26 11:46:11,822 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-26 11:46:11,822 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-26 11:46:11,823 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-26 11:46:11,824 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-26 11:46:11,824 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-26 11:46:11,825 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-26 11:46:11,825 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-26 11:46:11,826 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-26 11:46:11,826 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-26 11:46:11,827 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-26 11:46:11,828 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-26 11:46:11,828 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-26 11:46:11,829 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-26 11:46:11,830 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-26 11:46:11,830 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-26 11:46:11,831 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-26 11:46:11,831 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme
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 ! overflow) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f737570030041640fd86c7d2770b30b4e6ee4ac0d1c521887700aab87fb1426
[2023-11-26 11:46:12,081 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-26 11:46:12,115 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-26 11:46:12,118 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-26 11:46:12,121 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-26 11:46:12,121 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-26 11:46:12,123 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i
[2023-11-26 11:46:15,351 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-26 11:46:15,600 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-26 11:46:15,600 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i
[2023-11-26 11:46:15,618 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/data/4321eeb7e/280cae6adfdf4130a9d0896af77e12e5/FLAG5035e2f8e
[2023-11-26 11:46:15,634 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/data/4321eeb7e/280cae6adfdf4130a9d0896af77e12e5
[2023-11-26 11:46:15,637 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-26 11:46:15,639 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-26 11:46:15,641 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-26 11:46:15,641 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-26 11:46:15,647 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-26 11:46:15,648 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:15" (1/1) ...
[2023-11-26 11:46:15,649 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e797efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:15, skipping insertion in model container
[2023-11-26 11:46:15,649 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:15" (1/1) ...
[2023-11-26 11:46:15,696 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-26 11:46:16,093 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-26 11:46:16,104 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-26 11:46:16,166 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-26 11:46:16,203 INFO  L206         MainTranslator]: Completed translation
[2023-11-26 11:46:16,203 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16 WrapperNode
[2023-11-26 11:46:16,208 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-26 11:46:16,210 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-26 11:46:16,210 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-26 11:46:16,211 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-26 11:46:16,220 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,253 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,288 INFO  L138                Inliner]: procedures = 116, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89
[2023-11-26 11:46:16,289 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-26 11:46:16,289 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-26 11:46:16,290 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-26 11:46:16,290 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-26 11:46:16,304 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,304 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,308 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,325 INFO  L175           MemorySlicer]: Split 8 memory accesses to 1 slices as follows [8]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 6 writes are split as follows [6].
[2023-11-26 11:46:16,326 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,326 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,333 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,336 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,338 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,340 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,343 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-26 11:46:16,344 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-26 11:46:16,345 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-26 11:46:16,345 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-26 11:46:16,346 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (1/1) ...
[2023-11-26 11:46:16,366 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-26 11:46:16,379 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 11:46:16,399 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-26 11:46:16,421 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-26 11:46:16,458 INFO  L130     BoogieDeclarations]: Found specification of procedure myexit
[2023-11-26 11:46:16,458 INFO  L138     BoogieDeclarations]: Found implementation of procedure myexit
[2023-11-26 11:46:16,459 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-11-26 11:46:16,459 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2023-11-26 11:46:16,459 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2023-11-26 11:46:16,460 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-26 11:46:16,460 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-26 11:46:16,460 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-26 11:46:16,643 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-26 11:46:16,648 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-26 11:46:16,696 INFO  L775   $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true;
[2023-11-26 11:46:16,916 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-26 11:46:16,946 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-26 11:46:16,947 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-26 11:46:16,947 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:16 BoogieIcfgContainer
[2023-11-26 11:46:16,948 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-26 11:46:16,950 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-26 11:46:16,950 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-26 11:46:16,955 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-26 11:46:16,955 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:46:15" (1/3) ...
[2023-11-26 11:46:16,956 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b566b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:16, skipping insertion in model container
[2023-11-26 11:46:16,956 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:16" (2/3) ...
[2023-11-26 11:46:16,957 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b566b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:16, skipping insertion in model container
[2023-11-26 11:46:16,957 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:16" (3/3) ...
[2023-11-26 11:46:16,958 INFO  L112   eAbstractionObserver]: Analyzing ICFG dll_nondet_free_order-2.i
[2023-11-26 11:46:16,979 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-26 11:46:16,980 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-11-26 11:46:17,068 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-26 11:46:17,079 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62ee7e4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-26 11:46:17,080 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-11-26 11:46:17,088 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 20 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:46:17,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-11-26 11:46:17,097 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 11:46:17,097 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-11-26 11:46:17,098 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-26 11:46:17,104 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 11:46:17,105 INFO  L85        PathProgramCache]: Analyzing trace with hash 1002941081, now seen corresponding path program 1 times
[2023-11-26 11:46:17,116 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 11:46:17,117 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288885325]
[2023-11-26 11:46:17,118 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:46:17,118 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 11:46:17,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 11:46:17,482 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 11:46:17,485 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 11:46:17,485 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288885325]
[2023-11-26 11:46:17,486 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288885325] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 11:46:17,486 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 11:46:17,487 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-26 11:46:17,488 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927552547]
[2023-11-26 11:46:17,489 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 11:46:17,495 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 11:46:17,495 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 11:46:17,545 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 11:46:17,545 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 11:46:17,548 INFO  L87              Difference]: Start difference. First operand  has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 20 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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)
[2023-11-26 11:46:17,661 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 11:46:17,661 INFO  L93              Difference]: Finished difference Result 31 states and 45 transitions.
[2023-11-26 11:46:17,662 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-26 11:46:17,664 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7
[2023-11-26 11:46:17,664 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 11:46:17,670 INFO  L225             Difference]: With dead ends: 31
[2023-11-26 11:46:17,670 INFO  L226             Difference]: Without dead ends: 10
[2023-11-26 11:46:17,673 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-26 11:46:17,677 INFO  L413           NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-26 11:46:17,679 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 54 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-26 11:46:17,696 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2023-11-26 11:46:17,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2023-11-26 11:46:17,707 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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)
[2023-11-26 11:46:17,708 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2023-11-26 11:46:17,709 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7
[2023-11-26 11:46:17,710 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 11:46:17,710 INFO  L495      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2023-11-26 11:46:17,710 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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)
[2023-11-26 11:46:17,711 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2023-11-26 11:46:17,711 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2023-11-26 11:46:17,711 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 11:46:17,711 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 11:46:17,712 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-26 11:46:17,712 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-26 11:46:17,713 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 11:46:17,713 INFO  L85        PathProgramCache]: Analyzing trace with hash 1026402505, now seen corresponding path program 1 times
[2023-11-26 11:46:17,713 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 11:46:17,713 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402557916]
[2023-11-26 11:46:17,714 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:46:17,714 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 11:46:17,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 11:46:17,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 11:46:17,824 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 11:46:17,825 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402557916]
[2023-11-26 11:46:17,825 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402557916] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 11:46:17,825 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 11:46:17,826 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-26 11:46:17,826 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114269918]
[2023-11-26 11:46:17,826 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 11:46:17,827 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 11:46:17,828 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 11:46:17,828 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 11:46:17,829 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 11:46:17,829 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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)
[2023-11-26 11:46:17,849 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 11:46:17,849 INFO  L93              Difference]: Finished difference Result 9 states and 9 transitions.
[2023-11-26 11:46:17,849 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-26 11:46:17,850 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8
[2023-11-26 11:46:17,850 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 11:46:17,850 INFO  L225             Difference]: With dead ends: 9
[2023-11-26 11:46:17,850 INFO  L226             Difference]: Without dead ends: 0
[2023-11-26 11:46:17,851 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-26 11:46:17,853 INFO  L413           NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-26 11:46:17,854 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 11:46:17,855 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-11-26 11:46:17,855 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-11-26 11:46:17,855 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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)
[2023-11-26 11:46:17,856 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-11-26 11:46:17,856 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8
[2023-11-26 11:46:17,856 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 11:46:17,856 INFO  L495      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-11-26 11:46:17,857 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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)
[2023-11-26 11:46:17,857 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-11-26 11:46:17,857 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2023-11-26 11:46:17,860 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2023-11-26 11:46:17,861 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2023-11-26 11:46:17,861 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-26 11:46:17,863 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2023-11-26 11:46:17,880 INFO  L899   garLoopResultBuilder]: For program point L561(line 561) no Hoare annotation was computed.
[2023-11-26 11:46:17,881 INFO  L902   garLoopResultBuilder]: At program point $Ultimate##0(lines 560 562) the Hoare annotation is: true
[2023-11-26 11:46:17,881 INFO  L899   garLoopResultBuilder]: For program point myexitEXIT(lines 560 562) no Hoare annotation was computed.
[2023-11-26 11:46:17,881 INFO  L899   garLoopResultBuilder]: For program point L597(lines 597 614) no Hoare annotation was computed.
[2023-11-26 11:46:17,882 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 579) no Hoare annotation was computed.
[2023-11-26 11:46:17,882 INFO  L899   garLoopResultBuilder]: For program point L573(lines 573 575) no Hoare annotation was computed.
[2023-11-26 11:46:17,882 INFO  L899   garLoopResultBuilder]: For program point L573-1(lines 573 575) no Hoare annotation was computed.
[2023-11-26 11:46:17,882 INFO  L899   garLoopResultBuilder]: For program point L565(lines 565 567) no Hoare annotation was computed.
[2023-11-26 11:46:17,883 INFO  L899   garLoopResultBuilder]: For program point L565-1(lines 565 567) no Hoare annotation was computed.
[2023-11-26 11:46:17,883 INFO  L899   garLoopResultBuilder]: For program point L590(lines 590 596) no Hoare annotation was computed.
[2023-11-26 11:46:17,883 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 579) no Hoare annotation was computed.
[2023-11-26 11:46:17,883 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2023-11-26 11:46:17,884 INFO  L895   garLoopResultBuilder]: At program point L574(line 574) the Hoare annotation is: (<= 2 |ULTIMATE.start_dll_circular_create_~len#1|)
[2023-11-26 11:46:17,884 INFO  L899   garLoopResultBuilder]: For program point L599(lines 599 605) no Hoare annotation was computed.
[2023-11-26 11:46:17,884 INFO  L895   garLoopResultBuilder]: At program point L566(line 566) the Hoare annotation is: (<= 2 |ULTIMATE.start_dll_circular_create_~len#1|)
[2023-11-26 11:46:17,885 INFO  L899   garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed.
[2023-11-26 11:46:17,885 INFO  L899   garLoopResultBuilder]: For program point L579(line 579) no Hoare annotation was computed.
[2023-11-26 11:46:17,885 INFO  L899   garLoopResultBuilder]: For program point L579-1(line 579) no Hoare annotation was computed.
[2023-11-26 11:46:17,885 INFO  L899   garLoopResultBuilder]: For program point L608(lines 608 613) no Hoare annotation was computed.
[2023-11-26 11:46:17,885 INFO  L899   garLoopResultBuilder]: For program point L608-2(lines 585 615) no Hoare annotation was computed.
[2023-11-26 11:46:17,886 INFO  L895   garLoopResultBuilder]: At program point L571-2(lines 571 580) the Hoare annotation is: (<= |ULTIMATE.start_dll_circular_create_~len#1| 3)
[2023-11-26 11:46:17,886 INFO  L899   garLoopResultBuilder]: For program point L571-3(lines 571 580) no Hoare annotation was computed.
[2023-11-26 11:46:17,886 INFO  L899   garLoopResultBuilder]: For program point L588(lines 588 614) no Hoare annotation was computed.
[2023-11-26 11:46:17,890 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1]
[2023-11-26 11:46:17,893 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-11-26 11:46:17,905 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:46:17 BoogieIcfgContainer
[2023-11-26 11:46:17,906 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-26 11:46:17,906 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-26 11:46:17,907 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2023-11-26 11:46:17,907 INFO  L274        PluginConnector]: Witness Printer initialized
[2023-11-26 11:46:17,907 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:16" (3/4) ...
[2023-11-26 11:46:17,910 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2023-11-26 11:46:17,914 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure myexit
[2023-11-26 11:46:17,920 INFO  L943   BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges
[2023-11-26 11:46:17,920 INFO  L943   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2023-11-26 11:46:17,921 INFO  L943   BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2023-11-26 11:46:17,921 INFO  L943   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-11-26 11:46:18,026 INFO  L149         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/witness.graphml
[2023-11-26 11:46:18,027 INFO  L149         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/witness.yml
[2023-11-26 11:46:18,027 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-26 11:46:18,028 INFO  L158              Benchmark]: Toolchain (without parser) took 2388.89ms. Allocated memory is still 159.4MB. Free memory was 120.0MB in the beginning and 86.4MB in the end (delta: 33.6MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB.
[2023-11-26 11:46:18,028 INFO  L158              Benchmark]: CDTParser took 1.21ms. Allocated memory is still 115.3MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-26 11:46:18,029 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 568.51ms. Allocated memory is still 159.4MB. Free memory was 119.6MB in the beginning and 102.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2023-11-26 11:46:18,029 INFO  L158              Benchmark]: Boogie Procedure Inliner took 78.73ms. Allocated memory is still 159.4MB. Free memory was 102.8MB in the beginning and 101.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-26 11:46:18,030 INFO  L158              Benchmark]: Boogie Preprocessor took 54.07ms. Allocated memory is still 159.4MB. Free memory was 101.0MB in the beginning and 98.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-26 11:46:18,030 INFO  L158              Benchmark]: RCFGBuilder took 603.54ms. Allocated memory is still 159.4MB. Free memory was 98.6MB in the beginning and 84.3MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2023-11-26 11:46:18,031 INFO  L158              Benchmark]: TraceAbstraction took 955.56ms. Allocated memory is still 159.4MB. Free memory was 83.6MB in the beginning and 91.8MB in the end (delta: -8.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-26 11:46:18,031 INFO  L158              Benchmark]: Witness Printer took 120.86ms. Allocated memory is still 159.4MB. Free memory was 91.8MB in the beginning and 86.4MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB.
[2023-11-26 11:46:18,033 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 1.21ms. Allocated memory is still 115.3MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 568.51ms. Allocated memory is still 159.4MB. Free memory was 119.6MB in the beginning and 102.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 78.73ms. Allocated memory is still 159.4MB. Free memory was 102.8MB in the beginning and 101.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
 * Boogie Preprocessor took 54.07ms. Allocated memory is still 159.4MB. Free memory was 101.0MB in the beginning and 98.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * RCFGBuilder took 603.54ms. Allocated memory is still 159.4MB. Free memory was 98.6MB in the beginning and 84.3MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
 * TraceAbstraction took 955.56ms. Allocated memory is still 159.4MB. Free memory was 83.6MB in the beginning and 91.8MB in the end (delta: -8.2MB). There was no memory consumed. Max. memory is 16.1GB.
 * Witness Printer took 120.86ms. Allocated memory is still 159.4MB. Free memory was 91.8MB in the beginning and 86.4MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Line: 579]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 579]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 23 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 10 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    2 specifications checked. All of them hold
  - InvariantResult [Line: 571]: Loop Invariant
    Derived loop invariant: (len <= 3)
RESULT: Ultimate proved your program to be correct!
[2023-11-26 11:46:18,059 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6502b6b-1111-4ea3-b2ac-3a5e7b2e0078/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE