./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test25-2.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test25-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04738ccb45e87cb71ee901a776c43e93b7c292454abcb1b1134d9ecc09485bab
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 12:48:43,312 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 12:48:43,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-12-02 12:48:43,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 12:48:43,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 12:48:43,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 12:48:43,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 12:48:43,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 12:48:43,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 12:48:43,416 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 12:48:43,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 12:48:43,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 12:48:43,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 12:48:43,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 12:48:43,417 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 12:48:43,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 12:48:43,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 12:48:43,418 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 12:48:43,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 12:48:43,418 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 12:48:43,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 12:48:43,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 12:48:43,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 12:48:43,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 12:48:43,418 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 12:48:43,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 12:48:43,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 12:48:43,419 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 12:48:43,419 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 12:48:43,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 12:48:43,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 12:48:43,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 12:48:43,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 12:48:43,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 12:48:43,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 12:48:43,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 12:48:43,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 12:48:43,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 12:48:43,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 12:48:43,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 12:48:43,420 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 12:48:43,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 12:48:43,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-12-02 12:48:43,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 12:48:43,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 12:48:43,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 12:48:43,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 12:48:43,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 12:48:43,421 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
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_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04738ccb45e87cb71ee901a776c43e93b7c292454abcb1b1134d9ecc09485bab
[2024-12-02 12:48:43,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 12:48:43,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 12:48:43,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 12:48:43,697 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 12:48:43,698 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 12:48:43,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-regression/test25-2.c
[2024-12-02 12:48:46,526 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/data/14b9406f9/48708ce7b5554c5e9d2c9934301c981f/FLAG83d47ef51
[2024-12-02 12:48:46,743 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 12:48:46,744 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/sv-benchmarks/c/ldv-regression/test25-2.c
[2024-12-02 12:48:46,756 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/data/14b9406f9/48708ce7b5554c5e9d2c9934301c981f/FLAG83d47ef51
[2024-12-02 12:48:46,772 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/data/14b9406f9/48708ce7b5554c5e9d2c9934301c981f
[2024-12-02 12:48:46,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 12:48:46,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 12:48:46,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 12:48:46,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 12:48:46,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 12:48:46,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:46,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e37e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46, skipping insertion in model container
[2024-12-02 12:48:46,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:46,795 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 12:48:46,945 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/sv-benchmarks/c/ldv-regression/test25-2.c[949,962]
[2024-12-02 12:48:46,948 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 12:48:46,956 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 12:48:46,974 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/sv-benchmarks/c/ldv-regression/test25-2.c[949,962]
[2024-12-02 12:48:46,975 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 12:48:46,990 INFO L204 MainTranslator]: Completed translation
[2024-12-02 12:48:46,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46 WrapperNode
[2024-12-02 12:48:46,991 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 12:48:46,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 12:48:46,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 12:48:46,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 12:48:46,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,020 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92
[2024-12-02 12:48:47,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 12:48:47,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 12:48:47,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 12:48:47,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 12:48:47,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,048 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 6, 4]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1].
[2024-12-02 12:48:47,048 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,057 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 12:48:47,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 12:48:47,068 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 12:48:47,068 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 12:48:47,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (1/1) ...
[2024-12-02 12:48:47,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 12:48:47,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 12:48:47,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 12:48:47,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 12:48:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-12-02 12:48:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-12-02 12:48:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2
[2024-12-02 12:48:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 12:48:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 12:48:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-12-02 12:48:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-12-02 12:48:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-12-02 12:48:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-12-02 12:48:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2
[2024-12-02 12:48:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-12-02 12:48:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-12-02 12:48:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-12-02 12:48:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-12-02 12:48:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 12:48:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 12:48:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-12-02 12:48:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-12-02 12:48:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-12-02 12:48:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-12-02 12:48:47,223 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 12:48:47,225 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 12:48:47,382 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2024-12-02 12:48:47,382 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 12:48:47,391 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 12:48:47,392 INFO L312 CfgBuilder]: Removed 2 assume(true) statements.
[2024-12-02 12:48:47,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:47 BoogieIcfgContainer
[2024-12-02 12:48:47,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 12:48:47,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 12:48:47,395 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 12:48:47,401 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 12:48:47,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:48:46" (1/3) ...
[2024-12-02 12:48:47,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3883d9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:47, skipping insertion in model container
[2024-12-02 12:48:47,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:46" (2/3) ...
[2024-12-02 12:48:47,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3883d9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:47, skipping insertion in model container
[2024-12-02 12:48:47,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:47" (3/3) ...
[2024-12-02 12:48:47,404 INFO L128 eAbstractionObserver]: Analyzing ICFG test25-2.c
[2024-12-02 12:48:47,422 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 12:48:47,424 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test25-2.c that has 1 procedures, 19 locations, 1 initial locations, 2 loop locations, and 1 error locations.
[2024-12-02 12:48:47,486 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 12:48:47,501 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3caba2a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 12:48:47,501 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-12-02 12:48:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-12-02 12:48:47,512 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 12:48:47,513 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 12:48:47,513 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 12:48:47,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 12:48:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1302548260, now seen corresponding path program 1 times
[2024-12-02 12:48:47,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 12:48:47,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987721971]
[2024-12-02 12:48:47,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 12:48:47,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 12:48:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 12:48:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 12:48:47,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 12:48:47,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987721971]
[2024-12-02 12:48:47,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987721971] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 12:48:47,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 12:48:47,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 12:48:47,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965755589]
[2024-12-02 12:48:47,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 12:48:47,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 12:48:47,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 12:48:47,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 12:48:47,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 12:48:47,793 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 12:48:47,829 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions.
[2024-12-02 12:48:47,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 12:48:47,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11
[2024-12-02 12:48:47,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 12:48:47,836 INFO L225 Difference]: With dead ends: 36
[2024-12-02 12:48:47,837 INFO L226 Difference]: Without dead ends: 17
[2024-12-02 12:48:47,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 12:48:47,842 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 12:48:47,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 12:48:47,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2024-12-02 12:48:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16.
[2024-12-02 12:48:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2024-12-02 12:48:47,870 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11
[2024-12-02 12:48:47,870 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 12:48:47,870 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2024-12-02 12:48:47,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:47,871 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2024-12-02 12:48:47,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-12-02 12:48:47,871 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 12:48:47,871 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 12:48:47,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-12-02 12:48:47,871 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 12:48:47,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 12:48:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1376776990, now seen corresponding path program 1 times
[2024-12-02 12:48:47,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 12:48:47,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851906222]
[2024-12-02 12:48:47,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 12:48:47,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 12:48:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 12:48:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 12:48:48,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 12:48:48,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851906222]
[2024-12-02 12:48:48,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851906222] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 12:48:48,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917668370]
[2024-12-02 12:48:48,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 12:48:48,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 12:48:48,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 12:48:48,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 12:48:48,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 12:48:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 12:48:48,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-12-02 12:48:48,156 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 12:48:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 12:48:48,202 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 12:48:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 12:48:48,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917668370] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 12:48:48,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 12:48:48,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2024-12-02 12:48:48,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279390495]
[2024-12-02 12:48:48,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 12:48:48,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 12:48:48,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 12:48:48,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 12:48:48,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-12-02 12:48:48,238 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 12:48:48,285 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions.
[2024-12-02 12:48:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 12:48:48,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 14
[2024-12-02 12:48:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 12:48:48,287 INFO L225 Difference]: With dead ends: 33
[2024-12-02 12:48:48,287 INFO L226 Difference]: Without dead ends: 22
[2024-12-02 12:48:48,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-12-02 12:48:48,288 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 12:48:48,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 12:48:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-12-02 12:48:48,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2024-12-02 12:48:48,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2024-12-02 12:48:48,293 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14
[2024-12-02 12:48:48,293 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 12:48:48,293 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2024-12-02 12:48:48,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2024-12-02 12:48:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-12-02 12:48:48,294 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 12:48:48,294 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 12:48:48,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 12:48:48,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 12:48:48,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 12:48:48,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 12:48:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1955836754, now seen corresponding path program 2 times
[2024-12-02 12:48:48,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 12:48:48,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019126919]
[2024-12-02 12:48:48,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 12:48:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 12:48:48,561 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-12-02 12:48:48,562 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 12:48:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-12-02 12:48:48,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 12:48:48,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019126919]
[2024-12-02 12:48:48,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019126919] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 12:48:48,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 12:48:48,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 12:48:48,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397984056]
[2024-12-02 12:48:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 12:48:48,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 12:48:48,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 12:48:48,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 12:48:48,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-12-02 12:48:48,936 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:49,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 12:48:49,008 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions.
[2024-12-02 12:48:49,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 12:48:49,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 20
[2024-12-02 12:48:49,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 12:48:49,010 INFO L225 Difference]: With dead ends: 30
[2024-12-02 12:48:49,010 INFO L226 Difference]: Without dead ends: 25
[2024-12-02 12:48:49,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-12-02 12:48:49,011 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 12:48:49,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 12:48:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-12-02 12:48:49,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24.
[2024-12-02 12:48:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2024-12-02 12:48:49,017 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20
[2024-12-02 12:48:49,017 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 12:48:49,017 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2024-12-02 12:48:49,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2024-12-02 12:48:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-12-02 12:48:49,018 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 12:48:49,018 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 12:48:49,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-12-02 12:48:49,018 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 12:48:49,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 12:48:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash 365122804, now seen corresponding path program 1 times
[2024-12-02 12:48:49,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 12:48:49,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714706417]
[2024-12-02 12:48:49,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 12:48:49,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 12:48:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 12:48:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-12-02 12:48:49,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 12:48:49,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714706417]
[2024-12-02 12:48:49,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714706417] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 12:48:49,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049624600]
[2024-12-02 12:48:49,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 12:48:49,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 12:48:49,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 12:48:49,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 12:48:49,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 12:48:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 12:48:49,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-12-02 12:48:49,345 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 12:48:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-12-02 12:48:49,381 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 12:48:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-12-02 12:48:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049624600] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 12:48:49,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 12:48:49,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13
[2024-12-02 12:48:49,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209997943]
[2024-12-02 12:48:49,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 12:48:49,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-12-02 12:48:49,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 12:48:49,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-12-02 12:48:49,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2024-12-02 12:48:49,476 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:49,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 12:48:49,555 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions.
[2024-12-02 12:48:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-12-02 12:48:49,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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 23
[2024-12-02 12:48:49,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 12:48:49,556 INFO L225 Difference]: With dead ends: 49
[2024-12-02 12:48:49,556 INFO L226 Difference]: Without dead ends: 36
[2024-12-02 12:48:49,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2024-12-02 12:48:49,558 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 12:48:49,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 12:48:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-12-02 12:48:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2024-12-02 12:48:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions.
[2024-12-02 12:48:49,563 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 23
[2024-12-02 12:48:49,564 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 12:48:49,564 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions.
[2024-12-02 12:48:49,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions.
[2024-12-02 12:48:49,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-12-02 12:48:49,565 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 12:48:49,565 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 12:48:49,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 12:48:49,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 12:48:49,766 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 12:48:49,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 12:48:49,767 INFO L85 PathProgramCache]: Analyzing trace with hash 33474908, now seen corresponding path program 2 times
[2024-12-02 12:48:49,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 12:48:49,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708640606]
[2024-12-02 12:48:49,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 12:48:49,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 12:48:49,877 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 12:48:49,878 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 12:48:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2024-12-02 12:48:50,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 12:48:50,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708640606]
[2024-12-02 12:48:50,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708640606] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 12:48:50,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439651662]
[2024-12-02 12:48:50,369 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 12:48:50,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 12:48:50,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 12:48:50,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 12:48:50,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 12:48:50,600 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 12:48:50,600 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 12:48:50,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-12-02 12:48:50,607 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 12:48:50,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 12:48:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2024-12-02 12:48:50,705 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 12:48:50,781 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size
[2024-12-02 12:48:50,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18
[2024-12-02 12:48:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2024-12-02 12:48:50,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439651662] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 12:48:50,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 12:48:50,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11
[2024-12-02 12:48:50,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959677180]
[2024-12-02 12:48:50,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 12:48:50,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-12-02 12:48:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 12:48:50,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-12-02 12:48:50,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110
[2024-12-02 12:48:50,801 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 12:48:50,957 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions.
[2024-12-02 12:48:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-12-02 12:48:50,958 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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 35
[2024-12-02 12:48:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 12:48:50,958 INFO L225 Difference]: With dead ends: 51
[2024-12-02 12:48:50,958 INFO L226 Difference]: Without dead ends: 46
[2024-12-02 12:48:50,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2024-12-02 12:48:50,960 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 12:48:50,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 49 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 12:48:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2024-12-02 12:48:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45.
[2024-12-02 12:48:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions.
[2024-12-02 12:48:50,967 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 35
[2024-12-02 12:48:50,967 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 12:48:50,967 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions.
[2024-12-02 12:48:50,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:50,967 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions.
[2024-12-02 12:48:50,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-12-02 12:48:50,968 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 12:48:50,968 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 12:48:50,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-12-02 12:48:51,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 12:48:51,169 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 12:48:51,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 12:48:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash 471351750, now seen corresponding path program 3 times
[2024-12-02 12:48:51,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 12:48:51,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571827030]
[2024-12-02 12:48:51,170 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 12:48:51,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 12:48:51,246 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-12-02 12:48:51,246 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 12:48:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2024-12-02 12:48:51,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 12:48:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571827030]
[2024-12-02 12:48:51,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571827030] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 12:48:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051005338]
[2024-12-02 12:48:51,696 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 12:48:51,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 12:48:51,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 12:48:51,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 12:48:51,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 12:48:51,888 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-12-02 12:48:51,888 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 12:48:51,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjuncts are in the unsatisfiable core
[2024-12-02 12:48:51,895 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 12:48:51,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-12-02 12:48:51,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 12:48:51,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 12:48:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2024-12-02 12:48:52,380 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 12:48:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2024-12-02 12:48:52,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051005338] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 12:48:52,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 12:48:52,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 24
[2024-12-02 12:48:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535218346]
[2024-12-02 12:48:52,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 12:48:52,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-12-02 12:48:52,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 12:48:52,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-12-02 12:48:52,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552
[2024-12-02 12:48:52,700 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 12:48:52,945 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions.
[2024-12-02 12:48:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-12-02 12:48:52,946 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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 44
[2024-12-02 12:48:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 12:48:52,947 INFO L225 Difference]: With dead ends: 45
[2024-12-02 12:48:52,947 INFO L226 Difference]: Without dead ends: 0
[2024-12-02 12:48:52,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702
[2024-12-02 12:48:52,949 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 12:48:52,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 80 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 12:48:52,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-12-02 12:48:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-12-02 12:48:52,950 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)
[2024-12-02 12:48:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-12-02 12:48:52,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44
[2024-12-02 12:48:52,950 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 12:48:52,950 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-12-02 12:48:52,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 12:48:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-12-02 12:48:52,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-12-02 12:48:52,953 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-12-02 12:48:52,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-12-02 12:48:53,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 12:48:53,157 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1]
[2024-12-02 12:48:53,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-12-02 12:48:53,198 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-12-02 12:48:53,206 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#cont~0!offset
[2024-12-02 12:48:53,210 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#cont~0!offset
[2024-12-02 12:48:53,210 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pa~0!base
[2024-12-02 12:48:53,210 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#2.base
[2024-12-02 12:48:53,210 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#2.base,GLOBAL]
[2024-12-02 12:48:53,210 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#2.base,GLOBAL],[IdentifierExpression[~#cont~0!base,<LOCAL,main>]]]
[2024-12-02 12:48:53,210 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#2.offset
[2024-12-02 12:48:53,210 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#2.offset,GLOBAL]
[2024-12-02 12:48:53,210 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#2.offset,GLOBAL],[IdentifierExpression[~#cont~0!base,<LOCAL,main>]]]
[2024-12-02 12:48:53,211 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pa~0!offset
[2024-12-02 12:48:53,211 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1
[2024-12-02 12:48:53,211 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL]
[2024-12-02 12:48:53,211 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~pa~0!base,<LOCAL,main>]]]
[2024-12-02 12:48:53,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:48:53 BoogieIcfgContainer
[2024-12-02 12:48:53,211 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-12-02 12:48:53,212 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-12-02 12:48:53,212 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-12-02 12:48:53,212 INFO L274 PluginConnector]: Witness Printer initialized
[2024-12-02 12:48:53,212 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:47" (3/4) ...
[2024-12-02 12:48:53,214 INFO L146 WitnessPrinter]: Generating witness for correct program
[2024-12-02 12:48:53,222 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges
[2024-12-02 12:48:53,222 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2024-12-02 12:48:53,222 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-12-02 12:48:53,222 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-12-02 12:48:53,307 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml
[2024-12-02 12:48:53,307 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/witness.yml
[2024-12-02 12:48:53,307 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-12-02 12:48:53,308 INFO L158 Benchmark]: Toolchain (without parser) took 6531.98ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 117.5MB in the beginning and 199.3MB in the end (delta: -81.8MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB.
[2024-12-02 12:48:53,308 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 12:48:53,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.09ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 106.1MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 12:48:53,309 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.02ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 104.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 12:48:53,309 INFO L158 Benchmark]: Boogie Preprocessor took 45.75ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 102.8MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 12:48:53,309 INFO L158 Benchmark]: RCFGBuilder took 324.68ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 90.4MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 12:48:53,310 INFO L158 Benchmark]: TraceAbstraction took 5816.34ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 89.9MB in the beginning and 202.6MB in the end (delta: -112.7MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB.
[2024-12-02 12:48:53,310 INFO L158 Benchmark]: Witness Printer took 95.52ms. Allocated memory is still 310.4MB. Free memory was 202.6MB in the beginning and 199.3MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 12:48:53,312 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 214.09ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 106.1MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 29.02ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 104.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 45.75ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 102.8MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 324.68ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 90.4MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 5816.34ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 89.9MB in the beginning and 202.6MB in the end (delta: -112.7MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB.
* Witness Printer took 95.52ms. Allocated memory is still 310.4MB. Free memory was 202.6MB in the beginning and 199.3MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Unknown variable: ~#cont~0!offset
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Unknown variable: ~#cont~0!offset
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Unknown variable: ~pa~0!base
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#2.base
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#2.base,GLOBAL]
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#2.base,GLOBAL],[IdentifierExpression[~#cont~0!base,<LOCAL,main>]]]
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#2.offset
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#2.offset,GLOBAL]
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#2.offset,GLOBAL],[IdentifierExpression[~#cont~0!base,<LOCAL,main>]]]
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Unknown variable: ~pa~0!offset
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Unknown variable: #memory_int#1
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL]
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~pa~0!base,<LOCAL,main>]]]
* 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: 50]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 282 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 203 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 79 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 207 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=5, InterpolantAutomatonStates: 48, 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 263 NumberOfCodeBlocks, 211 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 365 ConstructedInterpolants, 0 QuantifiedInterpolants, 1716 SizeOfPredicates, 13 NumberOfNonLiveVariables, 913 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 678/757 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, ConComCheckerStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2024-12-02 12:48:53,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13772e6e-04b1-4897-9192-2337acc2c3b3/bin/uautomizer-verify-84ZbGMXZE1/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