./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for overflows
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/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_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 15:04:40,515 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 15:04:40,574 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf
[2024-12-02 15:04:40,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 15:04:40,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 15:04:40,600 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 15:04:40,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 15:04:40,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 15:04:40,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 15:04:40,601 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 15:04:40,602 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 15:04:40,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 15:04:40,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 15:04:40,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 15:04:40,602 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 15:04:40,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 15:04:40,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 15:04:40,603 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 15:04:40,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 15:04:40,603 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 15:04:40,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 15:04:40,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 15:04:40,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 15:04:40,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 15:04:40,604 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME
[2024-12-02 15:04:40,604 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-12-02 15:04:40,604 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 15:04:40,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 15:04:40,604 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 15:04:40,604 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 15:04:40,605 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 15:04:40,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 15:04:40,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 15:04:40,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 15:04:40,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:04:40,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 15:04:40,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 15:04:40,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 15:04:40,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 15:04:40,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:04:40,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 15:04:40,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 15:04:40,606 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 15:04:40,606 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 15:04:40,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-12-02 15:04:40,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 15:04:40,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 15:04:40,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 15:04:40,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 15:04:40,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 15:04:40,607 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_4c901391-ea51-478a-ab60-34ac3748b12f/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 ! overflow) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992
[2024-12-02 15:04:40,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 15:04:40,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 15:04:40,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 15:04:40,848 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 15:04:40,849 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 15:04:40,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c
[2024-12-02 15:04:43,481 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/data/85d2731d7/c005dd43afff4307b093e63007ba35ba/FLAGef640e0d9
[2024-12-02 15:04:43,725 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 15:04:43,725 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c
[2024-12-02 15:04:43,734 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/data/85d2731d7/c005dd43afff4307b093e63007ba35ba/FLAGef640e0d9
[2024-12-02 15:04:44,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/data/85d2731d7/c005dd43afff4307b093e63007ba35ba
[2024-12-02 15:04:44,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 15:04:44,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 15:04:44,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 15:04:44,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 15:04:44,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 15:04:44,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68174e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44, skipping insertion in model container
[2024-12-02 15:04:44,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,110 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 15:04:44,251 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 15:04:44,260 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 15:04:44,273 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 15:04:44,287 INFO L204 MainTranslator]: Completed translation
[2024-12-02 15:04:44,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44 WrapperNode
[2024-12-02 15:04:44,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 15:04:44,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 15:04:44,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 15:04:44,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 15:04:44,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,313 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21
[2024-12-02 15:04:44,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 15:04:44,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 15:04:44,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 15:04:44,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 15:04:44,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,334 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-12-02 15:04:44,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,337 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 15:04:44,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 15:04:44,344 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 15:04:44,345 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 15:04:44,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ...
[2024-12-02 15:04:44,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:04:44,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:44,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 15:04:44,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 15:04:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 15:04:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 15:04:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2
[2024-12-02 15:04:44,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2
[2024-12-02 15:04:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1
[2024-12-02 15:04:44,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1
[2024-12-02 15:04:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 15:04:44,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 15:04:44,451 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 15:04:44,453 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 15:04:44,603 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live.
[2024-12-02 15:04:44,603 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 15:04:44,612 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 15:04:44,613 INFO L312 CfgBuilder]: Removed 0 assume(true) statements.
[2024-12-02 15:04:44,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:04:44 BoogieIcfgContainer
[2024-12-02 15:04:44,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 15:04:44,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 15:04:44,615 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 15:04:44,619 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 15:04:44,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:04:44" (1/3) ...
[2024-12-02 15:04:44,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111f9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:04:44, skipping insertion in model container
[2024-12-02 15:04:44,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (2/3) ...
[2024-12-02 15:04:44,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111f9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:04:44, skipping insertion in model container
[2024-12-02 15:04:44,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:04:44" (3/3) ...
[2024-12-02 15:04:44,621 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c
[2024-12-02 15:04:44,635 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 15:04:44,636 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_8-1.c that has 3 procedures, 53 locations, 1 initial locations, 0 loop locations, and 12 error locations.
[2024-12-02 15:04:44,683 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 15:04:44,697 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;@33fa1cfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 15:04:44,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations.
[2024-12-02 15:04:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-12-02 15:04:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-12-02 15:04:44,706 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:44,706 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:44,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:44,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times
[2024-12-02 15:04:44,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:44,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771417806]
[2024-12-02 15:04:44,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:44,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:44,871 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 15:04:44,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:44,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771417806]
[2024-12-02 15:04:44,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771417806] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:44,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:04:44,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 15:04:44,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462303143]
[2024-12-02 15:04:44,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:44,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 15:04:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:44,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 15:04:44,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 15:04:44,901 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 15:04:44,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:44,958 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions.
[2024-12-02 15:04:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 15:04:44,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2024-12-02 15:04:44,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:44,966 INFO L225 Difference]: With dead ends: 59
[2024-12-02 15:04:44,966 INFO L226 Difference]: Without dead ends: 45
[2024-12-02 15:04:44,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:04:44,971 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:44,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:44,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2024-12-02 15:04:45,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43.
[2024-12-02 15:04:45,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 15:04:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions.
[2024-12-02 15:04:45,008 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7
[2024-12-02 15:04:45,008 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:45,008 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions.
[2024-12-02 15:04:45,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 15:04:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions.
[2024-12-02 15:04:45,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-12-02 15:04:45,010 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:45,010 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:45,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-12-02 15:04:45,010 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:45,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:45,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2043293518, now seen corresponding path program 1 times
[2024-12-02 15:04:45,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:45,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981568474]
[2024-12-02 15:04:45,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:45,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:45,102 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 15:04:45,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:45,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981568474]
[2024-12-02 15:04:45,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981568474] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:45,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:04:45,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 15:04:45,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339277535]
[2024-12-02 15:04:45,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:45,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:04:45,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:45,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:04:45,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:45,105 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 15:04:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:45,189 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions.
[2024-12-02 15:04:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 15:04:45,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-12-02 15:04:45,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:45,190 INFO L225 Difference]: With dead ends: 64
[2024-12-02 15:04:45,190 INFO L226 Difference]: Without dead ends: 58
[2024-12-02 15:04:45,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 15:04:45,192 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:45,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 15:04:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2024-12-02 15:04:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56.
[2024-12-02 15:04:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 15:04:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions.
[2024-12-02 15:04:45,202 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8
[2024-12-02 15:04:45,202 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:45,202 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions.
[2024-12-02 15:04:45,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 15:04:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions.
[2024-12-02 15:04:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-12-02 15:04:45,203 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:45,203 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:45,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-12-02 15:04:45,203 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:45,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:45,204 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times
[2024-12-02 15:04:45,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:45,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067362595]
[2024-12-02 15:04:45,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:45,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:45,244 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 15:04:45,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:45,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067362595]
[2024-12-02 15:04:45,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067362595] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:45,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:04:45,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 15:04:45,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609584646]
[2024-12-02 15:04:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:45,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 15:04:45,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:45,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 15:04:45,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 15:04:45,246 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 15:04:45,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:45,280 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions.
[2024-12-02 15:04:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 15:04:45,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2024-12-02 15:04:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:45,282 INFO L225 Difference]: With dead ends: 58
[2024-12-02 15:04:45,282 INFO L226 Difference]: Without dead ends: 56
[2024-12-02 15:04:45,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:04:45,283 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:45,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2024-12-02 15:04:45,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54.
[2024-12-02 15:04:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 15:04:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions.
[2024-12-02 15:04:45,293 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13
[2024-12-02 15:04:45,293 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:45,293 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions.
[2024-12-02 15:04:45,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 15:04:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions.
[2024-12-02 15:04:45,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-12-02 15:04:45,294 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:45,294 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:45,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-12-02 15:04:45,294 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:45,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:45,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times
[2024-12-02 15:04:45,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:45,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696428234]
[2024-12-02 15:04:45,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:45,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:45,392 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 15:04:45,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:45,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696428234]
[2024-12-02 15:04:45,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696428234] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:45,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:04:45,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-12-02 15:04:45,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854910139]
[2024-12-02 15:04:45,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:45,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 15:04:45,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:45,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 15:04:45,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-12-02 15:04:45,394 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 15:04:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:45,524 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions.
[2024-12-02 15:04:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 15:04:45,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 15:04:45,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:45,525 INFO L225 Difference]: With dead ends: 58
[2024-12-02 15:04:45,526 INFO L226 Difference]: Without dead ends: 54
[2024-12-02 15:04:45,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2024-12-02 15:04:45,527 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:45,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 15:04:45,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2024-12-02 15:04:45,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50.
[2024-12-02 15:04:45,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 15:04:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions.
[2024-12-02 15:04:45,536 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14
[2024-12-02 15:04:45,536 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:45,537 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions.
[2024-12-02 15:04:45,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 15:04:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions.
[2024-12-02 15:04:45,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-12-02 15:04:45,538 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:45,538 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:45,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-12-02 15:04:45,538 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:45,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times
[2024-12-02 15:04:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:45,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904235559]
[2024-12-02 15:04:45,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:45,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 15:04:45,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:45,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904235559]
[2024-12-02 15:04:45,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904235559] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:45,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:04:45,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 15:04:45,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904628916]
[2024-12-02 15:04:45,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:45,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:04:45,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:45,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:04:45,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:45,656 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:45,703 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions.
[2024-12-02 15:04:45,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 15:04:45,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23
[2024-12-02 15:04:45,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:45,705 INFO L225 Difference]: With dead ends: 74
[2024-12-02 15:04:45,705 INFO L226 Difference]: Without dead ends: 69
[2024-12-02 15:04:45,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:45,707 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:45,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:45,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2024-12-02 15:04:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63.
[2024-12-02 15:04:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13)
[2024-12-02 15:04:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions.
[2024-12-02 15:04:45,720 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23
[2024-12-02 15:04:45,720 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:45,720 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions.
[2024-12-02 15:04:45,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:45,721 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions.
[2024-12-02 15:04:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2024-12-02 15:04:45,722 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:45,722 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:45,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-12-02 15:04:45,723 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:45,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times
[2024-12-02 15:04:45,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:45,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561935505]
[2024-12-02 15:04:45,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:45,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-12-02 15:04:45,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:45,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561935505]
[2024-12-02 15:04:45,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561935505] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:45,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064122746]
[2024-12-02 15:04:45,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:45,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:45,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:45,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:45,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 15:04:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:45,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:45,885 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:04:45,998 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:04:45,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064122746] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:45,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 15:04:45,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11
[2024-12-02 15:04:45,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094218781]
[2024-12-02 15:04:45,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:45,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 15:04:45,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:46,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 15:04:46,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 15:04:46,000 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:46,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:46,126 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions.
[2024-12-02 15:04:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 15:04:46,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24
[2024-12-02 15:04:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:46,129 INFO L225 Difference]: With dead ends: 113
[2024-12-02 15:04:46,129 INFO L226 Difference]: Without dead ends: 63
[2024-12-02 15:04:46,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2024-12-02 15:04:46,131 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:46,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 15:04:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2024-12-02 15:04:46,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59.
[2024-12-02 15:04:46,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10)
[2024-12-02 15:04:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions.
[2024-12-02 15:04:46,141 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24
[2024-12-02 15:04:46,141 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:46,141 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions.
[2024-12-02 15:04:46,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions.
[2024-12-02 15:04:46,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-12-02 15:04:46,142 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:46,142 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:46,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 15:04:46,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:46,343 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:46,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash 120521327, now seen corresponding path program 1 times
[2024-12-02 15:04:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:46,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121115178]
[2024-12-02 15:04:46,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:46,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-12-02 15:04:46,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:46,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121115178]
[2024-12-02 15:04:46,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121115178] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:46,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:04:46,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 15:04:46,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394830292]
[2024-12-02 15:04:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:46,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:04:46,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:46,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:04:46,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:46,431 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:46,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:46,472 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions.
[2024-12-02 15:04:46,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 15:04:46,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25
[2024-12-02 15:04:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:46,474 INFO L225 Difference]: With dead ends: 83
[2024-12-02 15:04:46,474 INFO L226 Difference]: Without dead ends: 78
[2024-12-02 15:04:46,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:46,475 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:46,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2024-12-02 15:04:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69.
[2024-12-02 15:04:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19)
[2024-12-02 15:04:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions.
[2024-12-02 15:04:46,486 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25
[2024-12-02 15:04:46,486 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:46,486 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions.
[2024-12-02 15:04:46,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions.
[2024-12-02 15:04:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-12-02 15:04:46,488 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:46,488 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:46,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-12-02 15:04:46,488 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:46,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash -473230649, now seen corresponding path program 1 times
[2024-12-02 15:04:46,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:46,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118662095]
[2024-12-02 15:04:46,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:46,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-12-02 15:04:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118662095]
[2024-12-02 15:04:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118662095] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:04:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 15:04:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407143493]
[2024-12-02 15:04:46,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:46,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:04:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:46,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:04:46,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:46,551 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:46,591 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions.
[2024-12-02 15:04:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 15:04:46,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29
[2024-12-02 15:04:46,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:46,593 INFO L225 Difference]: With dead ends: 83
[2024-12-02 15:04:46,593 INFO L226 Difference]: Without dead ends: 81
[2024-12-02 15:04:46,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:46,594 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:46,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2024-12-02 15:04:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78.
[2024-12-02 15:04:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23)
[2024-12-02 15:04:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions.
[2024-12-02 15:04:46,605 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29
[2024-12-02 15:04:46,606 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:46,606 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions.
[2024-12-02 15:04:46,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:46,606 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions.
[2024-12-02 15:04:46,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-12-02 15:04:46,607 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:46,607 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:46,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-12-02 15:04:46,608 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:46,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:46,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1773385638, now seen corresponding path program 1 times
[2024-12-02 15:04:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:46,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637220296]
[2024-12-02 15:04:46,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:46,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-12-02 15:04:46,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:46,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637220296]
[2024-12-02 15:04:46,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637220296] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:46,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471548018]
[2024-12-02 15:04:46,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:46,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:46,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:46,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:46,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 15:04:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:46,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:46,708 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:04:46,815 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:04:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 15:04:46,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471548018] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:04:46,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:04:46,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19
[2024-12-02 15:04:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946323330]
[2024-12-02 15:04:46,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:04:46,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 15:04:46,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:46,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 15:04:46,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342
[2024-12-02 15:04:46,989 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6)
[2024-12-02 15:04:47,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:47,396 INFO L93 Difference]: Finished difference Result 204 states and 275 transitions.
[2024-12-02 15:04:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-12-02 15:04:47,397 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30
[2024-12-02 15:04:47,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:47,398 INFO L225 Difference]: With dead ends: 204
[2024-12-02 15:04:47,398 INFO L226 Difference]: Without dead ends: 135
[2024-12-02 15:04:47,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552
[2024-12-02 15:04:47,400 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 130 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:47,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 548 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-12-02 15:04:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-12-02 15:04:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 121.
[2024-12-02 15:04:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34)
[2024-12-02 15:04:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions.
[2024-12-02 15:04:47,419 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30
[2024-12-02 15:04:47,419 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:47,419 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions.
[2024-12-02 15:04:47,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6)
[2024-12-02 15:04:47,420 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions.
[2024-12-02 15:04:47,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2024-12-02 15:04:47,421 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:47,421 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:47,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 15:04:47,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:47,622 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:47,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:47,622 INFO L85 PathProgramCache]: Analyzing trace with hash -463506674, now seen corresponding path program 2 times
[2024-12-02 15:04:47,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:47,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492374922]
[2024-12-02 15:04:47,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:04:47,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:47,635 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:04:47,635 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:04:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-12-02 15:04:47,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:47,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492374922]
[2024-12-02 15:04:47,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492374922] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:47,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747647572]
[2024-12-02 15:04:47,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:04:47,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:47,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:47,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:47,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 15:04:47,764 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:04:47,764 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:04:47,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:47,766 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-12-02 15:04:47,810 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:04:47,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747647572] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:47,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 15:04:47,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7
[2024-12-02 15:04:47,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660963561]
[2024-12-02 15:04:47,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:47,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:04:47,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:47,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:04:47,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-12-02 15:04:47,812 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:47,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:47,841 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions.
[2024-12-02 15:04:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 15:04:47,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42
[2024-12-02 15:04:47,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:47,842 INFO L225 Difference]: With dead ends: 130
[2024-12-02 15:04:47,842 INFO L226 Difference]: Without dead ends: 129
[2024-12-02 15:04:47,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-12-02 15:04:47,843 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:47,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:47,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2024-12-02 15:04:47,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125.
[2024-12-02 15:04:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.15625) internal successors, (111), 99 states have internal predecessors, (111), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34)
[2024-12-02 15:04:47,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions.
[2024-12-02 15:04:47,856 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42
[2024-12-02 15:04:47,856 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:47,856 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions.
[2024-12-02 15:04:47,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:47,857 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions.
[2024-12-02 15:04:47,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-12-02 15:04:47,858 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:47,858 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:47,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-12-02 15:04:48,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-12-02 15:04:48,058 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:48,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:48,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1483804933, now seen corresponding path program 1 times
[2024-12-02 15:04:48,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:48,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979988504]
[2024-12-02 15:04:48,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:48,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-12-02 15:04:48,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979988504]
[2024-12-02 15:04:48,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979988504] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813973605]
[2024-12-02 15:04:48,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:48,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:48,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:48,144 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:48,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 15:04:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:48,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:48,184 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:04:48,327 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:04:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 15:04:48,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813973605] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:04:48,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:04:48,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 23
[2024-12-02 15:04:48,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434185239]
[2024-12-02 15:04:48,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:04:48,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-12-02 15:04:48,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:48,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-12-02 15:04:48,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506
[2024-12-02 15:04:48,531 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6)
[2024-12-02 15:04:49,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:49,108 INFO L93 Difference]: Finished difference Result 321 states and 423 transitions.
[2024-12-02 15:04:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2024-12-02 15:04:49,108 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43
[2024-12-02 15:04:49,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:49,110 INFO L225 Difference]: With dead ends: 321
[2024-12-02 15:04:49,110 INFO L226 Difference]: Without dead ends: 211
[2024-12-02 15:04:49,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930
[2024-12-02 15:04:49,112 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 174 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:49,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1015 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-12-02 15:04:49,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states.
[2024-12-02 15:04:49,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 191.
[2024-12-02 15:04:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 149 states have (on average 1.1543624161073827) internal successors, (172), 151 states have internal predecessors, (172), 25 states have call successors, (25), 10 states have call predecessors, (25), 13 states have return successors, (48), 29 states have call predecessors, (48), 24 states have call successors, (48)
[2024-12-02 15:04:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 245 transitions.
[2024-12-02 15:04:49,130 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 245 transitions. Word has length 43
[2024-12-02 15:04:49,130 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:49,130 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 245 transitions.
[2024-12-02 15:04:49,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6)
[2024-12-02 15:04:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 245 transitions.
[2024-12-02 15:04:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2024-12-02 15:04:49,131 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:49,131 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:49,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-12-02 15:04:49,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-12-02 15:04:49,332 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:49,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:49,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1504919224, now seen corresponding path program 1 times
[2024-12-02 15:04:49,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:49,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124062868]
[2024-12-02 15:04:49,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:49,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2024-12-02 15:04:49,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:49,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124062868]
[2024-12-02 15:04:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124062868] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:49,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001481496]
[2024-12-02 15:04:49,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:49,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:49,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:49,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:49,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 15:04:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:49,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:49,466 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:04:49,708 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:04:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 15:04:49,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001481496] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:04:49,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:04:49,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 19] total 24
[2024-12-02 15:04:49,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442795140]
[2024-12-02 15:04:49,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:04:49,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-12-02 15:04:49,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:49,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-12-02 15:04:49,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552
[2024-12-02 15:04:49,963 INFO L87 Difference]: Start difference. First operand 191 states and 245 transitions. Second operand has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5)
[2024-12-02 15:04:50,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:50,651 INFO L93 Difference]: Finished difference Result 406 states and 525 transitions.
[2024-12-02 15:04:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-12-02 15:04:50,652 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 60
[2024-12-02 15:04:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:50,654 INFO L225 Difference]: With dead ends: 406
[2024-12-02 15:04:50,654 INFO L226 Difference]: Without dead ends: 236
[2024-12-02 15:04:50,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 93 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992
[2024-12-02 15:04:50,655 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 195 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:50,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1200 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-12-02 15:04:50,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states.
[2024-12-02 15:04:50,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 213.
[2024-12-02 15:04:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 167 states have (on average 1.1497005988023952) internal successors, (192), 168 states have internal predecessors, (192), 28 states have call successors, (28), 11 states have call predecessors, (28), 14 states have return successors, (54), 33 states have call predecessors, (54), 27 states have call successors, (54)
[2024-12-02 15:04:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 274 transitions.
[2024-12-02 15:04:50,670 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 274 transitions. Word has length 60
[2024-12-02 15:04:50,670 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:50,670 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 274 transitions.
[2024-12-02 15:04:50,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5)
[2024-12-02 15:04:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 274 transitions.
[2024-12-02 15:04:50,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2024-12-02 15:04:50,671 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:50,671 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:50,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-12-02 15:04:50,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2024-12-02 15:04:50,872 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:50,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1710163946, now seen corresponding path program 2 times
[2024-12-02 15:04:50,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:50,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654934129]
[2024-12-02 15:04:50,872 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:04:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:50,881 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:04:50,881 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:04:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2024-12-02 15:04:50,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654934129]
[2024-12-02 15:04:50,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654934129] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729306356]
[2024-12-02 15:04:50,953 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:04:50,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:50,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:50,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:50,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 15:04:50,999 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:04:50,999 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:04:51,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:51,001 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2024-12-02 15:04:51,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:04:51,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729306356] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:51,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 15:04:51,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7
[2024-12-02 15:04:51,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435418968]
[2024-12-02 15:04:51,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:51,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:04:51,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:51,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:04:51,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-12-02 15:04:51,041 INFO L87 Difference]: Start difference. First operand 213 states and 274 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:51,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:51,073 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions.
[2024-12-02 15:04:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 15:04:51,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60
[2024-12-02 15:04:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:51,076 INFO L225 Difference]: With dead ends: 226
[2024-12-02 15:04:51,076 INFO L226 Difference]: Without dead ends: 225
[2024-12-02 15:04:51,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-12-02 15:04:51,077 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:51,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states.
[2024-12-02 15:04:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 221.
[2024-12-02 15:04:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 175 states have (on average 1.1428571428571428) internal successors, (200), 172 states have internal predecessors, (200), 28 states have call successors, (28), 11 states have call predecessors, (28), 14 states have return successors, (54), 37 states have call predecessors, (54), 27 states have call successors, (54)
[2024-12-02 15:04:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 282 transitions.
[2024-12-02 15:04:51,094 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 282 transitions. Word has length 60
[2024-12-02 15:04:51,095 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:51,095 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 282 transitions.
[2024-12-02 15:04:51,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:51,095 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 282 transitions.
[2024-12-02 15:04:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2024-12-02 15:04:51,096 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:51,096 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:51,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 15:04:51,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:51,297 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:51,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:51,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1475474675, now seen corresponding path program 1 times
[2024-12-02 15:04:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:51,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304871859]
[2024-12-02 15:04:51,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:51,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2024-12-02 15:04:51,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:51,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304871859]
[2024-12-02 15:04:51,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304871859] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:51,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118572804]
[2024-12-02 15:04:51,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:51,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:51,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:51,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:51,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-12-02 15:04:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:51,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:51,429 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2024-12-02 15:04:51,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:04:51,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118572804] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:51,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 15:04:51,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9
[2024-12-02 15:04:51,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778660011]
[2024-12-02 15:04:51,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:51,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 15:04:51,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:51,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 15:04:51,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2024-12-02 15:04:51,484 INFO L87 Difference]: Start difference. First operand 221 states and 282 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:51,525 INFO L93 Difference]: Finished difference Result 237 states and 303 transitions.
[2024-12-02 15:04:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 15:04:51,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61
[2024-12-02 15:04:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:51,527 INFO L225 Difference]: With dead ends: 237
[2024-12-02 15:04:51,527 INFO L226 Difference]: Without dead ends: 236
[2024-12-02 15:04:51,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2024-12-02 15:04:51,527 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:51,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 149 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:51,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states.
[2024-12-02 15:04:51,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 217.
[2024-12-02 15:04:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 172 states have (on average 1.1453488372093024) internal successors, (197), 169 states have internal predecessors, (197), 27 states have call successors, (27), 11 states have call predecessors, (27), 14 states have return successors, (51), 36 states have call predecessors, (51), 26 states have call successors, (51)
[2024-12-02 15:04:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 275 transitions.
[2024-12-02 15:04:51,539 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 275 transitions. Word has length 61
[2024-12-02 15:04:51,539 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:51,539 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 275 transitions.
[2024-12-02 15:04:51,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:04:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 275 transitions.
[2024-12-02 15:04:51,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-12-02 15:04:51,540 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:51,540 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:51,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-12-02 15:04:51,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:51,741 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:51,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1055529936, now seen corresponding path program 1 times
[2024-12-02 15:04:51,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:51,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116705032]
[2024-12-02 15:04:51,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:51,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked.
[2024-12-02 15:04:51,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116705032]
[2024-12-02 15:04:51,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116705032] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:51,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:04:51,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 15:04:51,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392036586]
[2024-12-02 15:04:51,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:51,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:04:51,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:51,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:04:51,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:51,820 INFO L87 Difference]: Start difference. First operand 217 states and 275 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 15:04:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:51,861 INFO L93 Difference]: Finished difference Result 227 states and 287 transitions.
[2024-12-02 15:04:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 15:04:51,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77
[2024-12-02 15:04:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:51,863 INFO L225 Difference]: With dead ends: 227
[2024-12-02 15:04:51,863 INFO L226 Difference]: Without dead ends: 226
[2024-12-02 15:04:51,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:51,864 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:51,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 143 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states.
[2024-12-02 15:04:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 211.
[2024-12-02 15:04:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 168 states have (on average 1.1488095238095237) internal successors, (193), 164 states have internal predecessors, (193), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (43), 35 states have call predecessors, (43), 25 states have call successors, (43)
[2024-12-02 15:04:51,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 262 transitions.
[2024-12-02 15:04:51,876 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 262 transitions. Word has length 77
[2024-12-02 15:04:51,876 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:51,876 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 262 transitions.
[2024-12-02 15:04:51,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 15:04:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 262 transitions.
[2024-12-02 15:04:51,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2024-12-02 15:04:51,877 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:51,877 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:51,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2024-12-02 15:04:51,878 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:51,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1329146264, now seen corresponding path program 1 times
[2024-12-02 15:04:51,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:51,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400409489]
[2024-12-02 15:04:51,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:51,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked.
[2024-12-02 15:04:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:51,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400409489]
[2024-12-02 15:04:51,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400409489] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:51,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167817538]
[2024-12-02 15:04:51,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:51,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:51,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:51,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:51,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-12-02 15:04:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:51,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:51,983 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-12-02 15:04:52,222 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:04:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-12-02 15:04:52,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167817538] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:04:52,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:04:52,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 19, 19] total 23
[2024-12-02 15:04:52,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032369794]
[2024-12-02 15:04:52,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:04:52,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-12-02 15:04:52,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:52,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-12-02 15:04:52,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506
[2024-12-02 15:04:52,464 INFO L87 Difference]: Start difference. First operand 211 states and 262 transitions. Second operand has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (16), 8 states have call predecessors, (16), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8)
[2024-12-02 15:04:53,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:53,135 INFO L93 Difference]: Finished difference Result 583 states and 775 transitions.
[2024-12-02 15:04:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2024-12-02 15:04:53,135 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (16), 8 states have call predecessors, (16), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 79
[2024-12-02 15:04:53,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:53,138 INFO L225 Difference]: With dead ends: 583
[2024-12-02 15:04:53,138 INFO L226 Difference]: Without dead ends: 393
[2024-12-02 15:04:53,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 130 SyntacticMatches, 16 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640
[2024-12-02 15:04:53,141 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 265 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:53,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 383 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-12-02 15:04:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states.
[2024-12-02 15:04:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 362.
[2024-12-02 15:04:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 290 states have (on average 1.1413793103448275) internal successors, (331), 281 states have internal predecessors, (331), 45 states have call successors, (45), 18 states have call predecessors, (45), 23 states have return successors, (77), 62 states have call predecessors, (77), 44 states have call successors, (77)
[2024-12-02 15:04:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 453 transitions.
[2024-12-02 15:04:53,168 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 453 transitions. Word has length 79
[2024-12-02 15:04:53,169 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:53,169 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 453 transitions.
[2024-12-02 15:04:53,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (16), 8 states have call predecessors, (16), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8)
[2024-12-02 15:04:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 453 transitions.
[2024-12-02 15:04:53,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2024-12-02 15:04:53,170 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:53,170 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:53,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-12-02 15:04:53,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2024-12-02 15:04:53,371 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:53,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:53,371 INFO L85 PathProgramCache]: Analyzing trace with hash -932529083, now seen corresponding path program 1 times
[2024-12-02 15:04:53,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:53,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290452676]
[2024-12-02 15:04:53,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:53,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked.
[2024-12-02 15:04:53,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:53,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290452676]
[2024-12-02 15:04:53,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290452676] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:53,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:04:53,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 15:04:53,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482832780]
[2024-12-02 15:04:53,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:53,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:04:53,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:53,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:04:53,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:53,430 INFO L87 Difference]: Start difference. First operand 362 states and 453 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 15:04:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:53,466 INFO L93 Difference]: Finished difference Result 390 states and 492 transitions.
[2024-12-02 15:04:53,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 15:04:53,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74
[2024-12-02 15:04:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:53,469 INFO L225 Difference]: With dead ends: 390
[2024-12-02 15:04:53,469 INFO L226 Difference]: Without dead ends: 389
[2024-12-02 15:04:53,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:53,470 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:53,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states.
[2024-12-02 15:04:53,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 375.
[2024-12-02 15:04:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 301 states have (on average 1.1362126245847175) internal successors, (342), 291 states have internal predecessors, (342), 45 states have call successors, (45), 18 states have call predecessors, (45), 25 states have return successors, (86), 65 states have call predecessors, (86), 44 states have call successors, (86)
[2024-12-02 15:04:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 473 transitions.
[2024-12-02 15:04:53,495 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 473 transitions. Word has length 74
[2024-12-02 15:04:53,495 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:53,495 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 473 transitions.
[2024-12-02 15:04:53,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 15:04:53,495 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 473 transitions.
[2024-12-02 15:04:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-12-02 15:04:53,496 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:53,496 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:53,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2024-12-02 15:04:53,496 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:53,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:53,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1524107692, now seen corresponding path program 1 times
[2024-12-02 15:04:53,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:53,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716119947]
[2024-12-02 15:04:53,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:53,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked.
[2024-12-02 15:04:53,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:53,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716119947]
[2024-12-02 15:04:53,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716119947] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:53,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769773968]
[2024-12-02 15:04:53,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:53,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:53,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:53,627 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:53,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-12-02 15:04:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:53,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:53,672 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2024-12-02 15:04:53,769 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:04:53,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769773968] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:53,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 15:04:53,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14
[2024-12-02 15:04:53,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066969165]
[2024-12-02 15:04:53,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:53,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-12-02 15:04:53,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:53,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-12-02 15:04:53,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210
[2024-12-02 15:04:53,771 INFO L87 Difference]: Start difference. First operand 375 states and 473 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 15:04:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:53,856 INFO L93 Difference]: Finished difference Result 481 states and 631 transitions.
[2024-12-02 15:04:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-12-02 15:04:53,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 75
[2024-12-02 15:04:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:53,859 INFO L225 Difference]: With dead ends: 481
[2024-12-02 15:04:53,859 INFO L226 Difference]: Without dead ends: 480
[2024-12-02 15:04:53,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210
[2024-12-02 15:04:53,860 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:53,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 202 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 15:04:53,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states.
[2024-12-02 15:04:53,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 411.
[2024-12-02 15:04:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 330 states have (on average 1.1393939393939394) internal successors, (376), 317 states have internal predecessors, (376), 48 states have call successors, (48), 18 states have call predecessors, (48), 29 states have return successors, (111), 75 states have call predecessors, (111), 47 states have call successors, (111)
[2024-12-02 15:04:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 535 transitions.
[2024-12-02 15:04:53,890 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 535 transitions. Word has length 75
[2024-12-02 15:04:53,890 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:53,890 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 535 transitions.
[2024-12-02 15:04:53,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 15:04:53,891 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 535 transitions.
[2024-12-02 15:04:53,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2024-12-02 15:04:53,892 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:53,892 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:53,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-12-02 15:04:54,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-12-02 15:04:54,093 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:54,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash -121328009, now seen corresponding path program 1 times
[2024-12-02 15:04:54,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:54,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858670313]
[2024-12-02 15:04:54,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:54,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked.
[2024-12-02 15:04:54,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858670313]
[2024-12-02 15:04:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858670313] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:54,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128430105]
[2024-12-02 15:04:54,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:54,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:54,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:54,159 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:54,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-12-02 15:04:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:54,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:54,213 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 75 proven. 48 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-12-02 15:04:54,475 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:04:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 75 proven. 48 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-12-02 15:04:54,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128430105] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:04:54,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:04:54,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 21, 21] total 42
[2024-12-02 15:04:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644886409]
[2024-12-02 15:04:54,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:04:54,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2024-12-02 15:04:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:54,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2024-12-02 15:04:54,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1525, Unknown=0, NotChecked=0, Total=1722
[2024-12-02 15:04:54,817 INFO L87 Difference]: Start difference. First operand 411 states and 535 transitions. Second operand has 42 states, 40 states have (on average 3.325) internal successors, (133), 26 states have internal predecessors, (133), 21 states have call successors, (27), 17 states have call predecessors, (27), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10)
[2024-12-02 15:04:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:55,691 INFO L93 Difference]: Finished difference Result 842 states and 1139 transitions.
[2024-12-02 15:04:55,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2024-12-02 15:04:55,692 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 3.325) internal successors, (133), 26 states have internal predecessors, (133), 21 states have call successors, (27), 17 states have call predecessors, (27), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 84
[2024-12-02 15:04:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:55,694 INFO L225 Difference]: With dead ends: 842
[2024-12-02 15:04:55,694 INFO L226 Difference]: Without dead ends: 487
[2024-12-02 15:04:55,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1341 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=712, Invalid=3980, Unknown=0, NotChecked=0, Total=4692
[2024-12-02 15:04:55,697 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 533 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:55,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 542 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-12-02 15:04:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states.
[2024-12-02 15:04:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 436.
[2024-12-02 15:04:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 348 states have (on average 1.1293103448275863) internal successors, (393), 339 states have internal predecessors, (393), 52 states have call successors, (52), 20 states have call predecessors, (52), 32 states have return successors, (113), 76 states have call predecessors, (113), 51 states have call successors, (113)
[2024-12-02 15:04:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 558 transitions.
[2024-12-02 15:04:55,722 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 558 transitions. Word has length 84
[2024-12-02 15:04:55,722 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:55,722 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 558 transitions.
[2024-12-02 15:04:55,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 3.325) internal successors, (133), 26 states have internal predecessors, (133), 21 states have call successors, (27), 17 states have call predecessors, (27), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10)
[2024-12-02 15:04:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 558 transitions.
[2024-12-02 15:04:55,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2024-12-02 15:04:55,724 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:55,724 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:55,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-12-02 15:04:55,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:55,924 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:55,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:55,925 INFO L85 PathProgramCache]: Analyzing trace with hash 679118242, now seen corresponding path program 1 times
[2024-12-02 15:04:55,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:55,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520741789]
[2024-12-02 15:04:55,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:55,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2024-12-02 15:04:55,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:55,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520741789]
[2024-12-02 15:04:55,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520741789] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:04:55,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:04:55,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 15:04:55,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452665957]
[2024-12-02 15:04:55,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:04:55,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:04:55,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:55,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:04:55,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:55,985 INFO L87 Difference]: Start difference. First operand 436 states and 558 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 15:04:56,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:56,027 INFO L93 Difference]: Finished difference Result 452 states and 577 transitions.
[2024-12-02 15:04:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 15:04:56,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 79
[2024-12-02 15:04:56,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:56,030 INFO L225 Difference]: With dead ends: 452
[2024-12-02 15:04:56,031 INFO L226 Difference]: Without dead ends: 451
[2024-12-02 15:04:56,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:04:56,032 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:56,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:04:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states.
[2024-12-02 15:04:56,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 438.
[2024-12-02 15:04:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 349 states have (on average 1.1232091690544412) internal successors, (392), 341 states have internal predecessors, (392), 52 states have call successors, (52), 20 states have call predecessors, (52), 33 states have return successors, (115), 76 states have call predecessors, (115), 51 states have call successors, (115)
[2024-12-02 15:04:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 559 transitions.
[2024-12-02 15:04:56,066 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 559 transitions. Word has length 79
[2024-12-02 15:04:56,066 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:56,066 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 559 transitions.
[2024-12-02 15:04:56,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 15:04:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 559 transitions.
[2024-12-02 15:04:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2024-12-02 15:04:56,068 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:56,068 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:56,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2024-12-02 15:04:56,068 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:56,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash -916701128, now seen corresponding path program 1 times
[2024-12-02 15:04:56,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:56,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709053589]
[2024-12-02 15:04:56,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:56,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 63 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-12-02 15:04:56,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:56,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709053589]
[2024-12-02 15:04:56,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709053589] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:56,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706619195]
[2024-12-02 15:04:56,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:56,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:56,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:56,362 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:56,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-12-02 15:04:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:56,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:56,416 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked.
[2024-12-02 15:04:56,549 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:04:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-12-02 15:04:56,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706619195] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:04:56,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:04:56,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8, 7] total 31
[2024-12-02 15:04:56,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611829269]
[2024-12-02 15:04:56,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:04:56,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2024-12-02 15:04:56,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:56,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2024-12-02 15:04:56,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930
[2024-12-02 15:04:56,763 INFO L87 Difference]: Start difference. First operand 438 states and 559 transitions. Second operand has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14)
[2024-12-02 15:04:58,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:58,121 INFO L93 Difference]: Finished difference Result 940 states and 1243 transitions.
[2024-12-02 15:04:58,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2024-12-02 15:04:58,122 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 92
[2024-12-02 15:04:58,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:58,125 INFO L225 Difference]: With dead ends: 940
[2024-12-02 15:04:58,125 INFO L226 Difference]: Without dead ends: 577
[2024-12-02 15:04:58,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 178 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=612, Invalid=4080, Unknown=0, NotChecked=0, Total=4692
[2024-12-02 15:04:58,128 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 265 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:58,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 442 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-12-02 15:04:58,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states.
[2024-12-02 15:04:58,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 437.
[2024-12-02 15:04:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 346 states have (on average 1.1098265895953756) internal successors, (384), 343 states have internal predecessors, (384), 53 states have call successors, (53), 20 states have call predecessors, (53), 34 states have return successors, (131), 73 states have call predecessors, (131), 52 states have call successors, (131)
[2024-12-02 15:04:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 568 transitions.
[2024-12-02 15:04:58,153 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 568 transitions. Word has length 92
[2024-12-02 15:04:58,153 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:58,154 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 568 transitions.
[2024-12-02 15:04:58,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14)
[2024-12-02 15:04:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 568 transitions.
[2024-12-02 15:04:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2024-12-02 15:04:58,155 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:58,155 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:58,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-12-02 15:04:58,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2024-12-02 15:04:58,356 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:58,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1108261630, now seen corresponding path program 1 times
[2024-12-02 15:04:58,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:58,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411752375]
[2024-12-02 15:04:58,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:58,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2024-12-02 15:04:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:58,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411752375]
[2024-12-02 15:04:58,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411752375] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:58,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637226877]
[2024-12-02 15:04:58,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:58,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:58,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:58,584 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:58,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-12-02 15:04:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:58,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:58,641 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:04:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-12-02 15:04:58,717 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:04:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2024-12-02 15:04:59,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637226877] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:04:59,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:04:59,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19
[2024-12-02 15:04:59,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656710380]
[2024-12-02 15:04:59,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:04:59,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 15:04:59,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:04:59,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 15:04:59,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342
[2024-12-02 15:04:59,048 INFO L87 Difference]: Start difference. First operand 437 states and 568 transitions. Second operand has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9)
[2024-12-02 15:04:59,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:04:59,452 INFO L93 Difference]: Finished difference Result 841 states and 1097 transitions.
[2024-12-02 15:04:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-12-02 15:04:59,453 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 88
[2024-12-02 15:04:59,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:04:59,457 INFO L225 Difference]: With dead ends: 841
[2024-12-02 15:04:59,457 INFO L226 Difference]: Without dead ends: 468
[2024-12-02 15:04:59,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 167 SyntacticMatches, 13 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600
[2024-12-02 15:04:59,461 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 158 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 15:04:59,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 586 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-12-02 15:04:59,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states.
[2024-12-02 15:04:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 437.
[2024-12-02 15:04:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 346 states have (on average 1.1098265895953756) internal successors, (384), 343 states have internal predecessors, (384), 53 states have call successors, (53), 20 states have call predecessors, (53), 34 states have return successors, (123), 73 states have call predecessors, (123), 52 states have call successors, (123)
[2024-12-02 15:04:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 560 transitions.
[2024-12-02 15:04:59,493 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 560 transitions. Word has length 88
[2024-12-02 15:04:59,494 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:04:59,494 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 560 transitions.
[2024-12-02 15:04:59,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9)
[2024-12-02 15:04:59,494 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 560 transitions.
[2024-12-02 15:04:59,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2024-12-02 15:04:59,495 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:04:59,495 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:04:59,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-12-02 15:04:59,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2024-12-02 15:04:59,696 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:04:59,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:04:59,697 INFO L85 PathProgramCache]: Analyzing trace with hash 870027817, now seen corresponding path program 1 times
[2024-12-02 15:04:59,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:04:59,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786767456]
[2024-12-02 15:04:59,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:59,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:04:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2024-12-02 15:04:59,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:04:59,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786767456]
[2024-12-02 15:04:59,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786767456] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:04:59,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21553795]
[2024-12-02 15:04:59,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:04:59,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:04:59,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:04:59,904 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:04:59,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-12-02 15:04:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:04:59,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-12-02 15:04:59,965 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2024-12-02 15:05:00,038 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2024-12-02 15:05:00,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21553795] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:00,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:00,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16
[2024-12-02 15:05:00,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281974601]
[2024-12-02 15:05:00,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:00,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-12-02 15:05:00,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:00,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-12-02 15:05:00,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240
[2024-12-02 15:05:00,252 INFO L87 Difference]: Start difference. First operand 437 states and 560 transitions. Second operand has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6)
[2024-12-02 15:05:00,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:00,524 INFO L93 Difference]: Finished difference Result 793 states and 1022 transitions.
[2024-12-02 15:05:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-12-02 15:05:00,525 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 89
[2024-12-02 15:05:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:00,528 INFO L225 Difference]: With dead ends: 793
[2024-12-02 15:05:00,528 INFO L226 Difference]: Without dead ends: 441
[2024-12-02 15:05:00,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 170 SyntacticMatches, 12 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420
[2024-12-02 15:05:00,531 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 142 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:00,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 442 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 15:05:00,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states.
[2024-12-02 15:05:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 431.
[2024-12-02 15:05:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 340 states have (on average 1.111764705882353) internal successors, (378), 340 states have internal predecessors, (378), 53 states have call successors, (53), 20 states have call predecessors, (53), 34 states have return successors, (120), 70 states have call predecessors, (120), 52 states have call successors, (120)
[2024-12-02 15:05:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 551 transitions.
[2024-12-02 15:05:00,569 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 551 transitions. Word has length 89
[2024-12-02 15:05:00,570 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:00,570 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 551 transitions.
[2024-12-02 15:05:00,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6)
[2024-12-02 15:05:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 551 transitions.
[2024-12-02 15:05:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2024-12-02 15:05:00,571 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:00,572 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:05:00,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-12-02 15:05:00,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2024-12-02 15:05:00,772 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:00,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1952719999, now seen corresponding path program 1 times
[2024-12-02 15:05:00,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843606113]
[2024-12-02 15:05:00,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:05:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 47 proven. 72 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-12-02 15:05:01,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:01,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843606113]
[2024-12-02 15:05:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843606113] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:01,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969092710]
[2024-12-02 15:05:01,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:05:01,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:01,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:01,138 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:01,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-12-02 15:05:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:01,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:01,204 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked.
[2024-12-02 15:05:01,427 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked.
[2024-12-02 15:05:01,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969092710] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:01,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:01,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9, 11] total 36
[2024-12-02 15:05:01,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734605536]
[2024-12-02 15:05:01,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:01,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2024-12-02 15:05:01,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:01,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2024-12-02 15:05:01,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260
[2024-12-02 15:05:01,921 INFO L87 Difference]: Start difference. First operand 431 states and 551 transitions. Second operand has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16)
[2024-12-02 15:05:04,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:04,317 INFO L93 Difference]: Finished difference Result 1151 states and 1605 transitions.
[2024-12-02 15:05:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2024-12-02 15:05:04,317 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 93
[2024-12-02 15:05:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:04,324 INFO L225 Difference]: With dead ends: 1151
[2024-12-02 15:05:04,324 INFO L226 Difference]: Without dead ends: 772
[2024-12-02 15:05:04,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3146 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1349, Invalid=9781, Unknown=0, NotChecked=0, Total=11130
[2024-12-02 15:05:04,328 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 393 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:04,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 501 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-12-02 15:05:04,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states.
[2024-12-02 15:05:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 605.
[2024-12-02 15:05:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 479 states have (on average 1.1085594989561587) internal successors, (531), 470 states have internal predecessors, (531), 71 states have call successors, (71), 20 states have call predecessors, (71), 51 states have return successors, (261), 114 states have call predecessors, (261), 70 states have call successors, (261)
[2024-12-02 15:05:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 863 transitions.
[2024-12-02 15:05:04,368 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 863 transitions. Word has length 93
[2024-12-02 15:05:04,369 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:04,369 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 863 transitions.
[2024-12-02 15:05:04,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16)
[2024-12-02 15:05:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 863 transitions.
[2024-12-02 15:05:04,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2024-12-02 15:05:04,371 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:04,371 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:05:04,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-12-02 15:05:04,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2024-12-02 15:05:04,572 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:04,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1507205499, now seen corresponding path program 1 times
[2024-12-02 15:05:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:04,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596224333]
[2024-12-02 15:05:04,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:05:04,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked.
[2024-12-02 15:05:04,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:04,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596224333]
[2024-12-02 15:05:04,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596224333] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:04,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304057624]
[2024-12-02 15:05:04,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:05:04,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:04,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:04,640 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:04,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-12-02 15:05:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:04,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:04,710 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 33 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2024-12-02 15:05:04,905 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 33 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2024-12-02 15:05:05,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304057624] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:05,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:05,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 17] total 21
[2024-12-02 15:05:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52785691]
[2024-12-02 15:05:05,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:05,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 15:05:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:05,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 15:05:05,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420
[2024-12-02 15:05:05,218 INFO L87 Difference]: Start difference. First operand 605 states and 863 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12)
[2024-12-02 15:05:05,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:05,555 INFO L93 Difference]: Finished difference Result 1108 states and 1642 transitions.
[2024-12-02 15:05:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-12-02 15:05:05,556 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) Word has length 106
[2024-12-02 15:05:05,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:05,560 INFO L225 Difference]: With dead ends: 1108
[2024-12-02 15:05:05,560 INFO L226 Difference]: Without dead ends: 567
[2024-12-02 15:05:05,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756
[2024-12-02 15:05:05,569 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 205 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:05,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 469 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 15:05:05,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states.
[2024-12-02 15:05:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 557.
[2024-12-02 15:05:05,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 439 states have (on average 1.1002277904328017) internal successors, (483), 436 states have internal predecessors, (483), 66 states have call successors, (66), 20 states have call predecessors, (66), 48 states have return successors, (199), 100 states have call predecessors, (199), 65 states have call successors, (199)
[2024-12-02 15:05:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 748 transitions.
[2024-12-02 15:05:05,621 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 748 transitions. Word has length 106
[2024-12-02 15:05:05,621 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:05,621 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 748 transitions.
[2024-12-02 15:05:05,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12)
[2024-12-02 15:05:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 748 transitions.
[2024-12-02 15:05:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2024-12-02 15:05:05,623 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:05,623 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:05:05,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-12-02 15:05:05,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2024-12-02 15:05:05,824 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:05,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1606036922, now seen corresponding path program 2 times
[2024-12-02 15:05:05,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:05,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731209476]
[2024-12-02 15:05:05,825 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:05:05,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:05,841 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:05:05,841 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked.
[2024-12-02 15:05:06,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:06,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731209476]
[2024-12-02 15:05:06,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731209476] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:06,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042103380]
[2024-12-02 15:05:06,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:05:06,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:06,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:06,178 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:06,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-12-02 15:05:06,238 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:05:06,238 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:06,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:06,242 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked.
[2024-12-02 15:05:06,433 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked.
[2024-12-02 15:05:06,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042103380] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:06,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:06,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34
[2024-12-02 15:05:06,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143061905]
[2024-12-02 15:05:06,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:06,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2024-12-02 15:05:06,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:06,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2024-12-02 15:05:06,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190
[2024-12-02 15:05:06,918 INFO L87 Difference]: Start difference. First operand 557 states and 748 transitions. Second operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21)
[2024-12-02 15:05:07,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:07,420 INFO L93 Difference]: Finished difference Result 1074 states and 1626 transitions.
[2024-12-02 15:05:07,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2024-12-02 15:05:07,420 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) Word has length 107
[2024-12-02 15:05:07,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:07,424 INFO L225 Difference]: With dead ends: 1074
[2024-12-02 15:05:07,424 INFO L226 Difference]: Without dead ends: 1071
[2024-12-02 15:05:07,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=409, Invalid=2561, Unknown=0, NotChecked=0, Total=2970
[2024-12-02 15:05:07,425 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 44 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:07,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 620 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 15:05:07,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states.
[2024-12-02 15:05:07,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 794.
[2024-12-02 15:05:07,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 630 states have (on average 1.0825396825396825) internal successors, (682), 617 states have internal predecessors, (682), 86 states have call successors, (86), 20 states have call predecessors, (86), 74 states have return successors, (390), 156 states have call predecessors, (390), 85 states have call successors, (390)
[2024-12-02 15:05:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1158 transitions.
[2024-12-02 15:05:07,470 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1158 transitions. Word has length 107
[2024-12-02 15:05:07,470 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:07,470 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1158 transitions.
[2024-12-02 15:05:07,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21)
[2024-12-02 15:05:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1158 transitions.
[2024-12-02 15:05:07,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2024-12-02 15:05:07,471 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:07,471 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:05:07,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-12-02 15:05:07,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2024-12-02 15:05:07,672 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:07,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:07,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1752462871, now seen corresponding path program 1 times
[2024-12-02 15:05:07,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:07,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257691348]
[2024-12-02 15:05:07,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:05:07,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked.
[2024-12-02 15:05:07,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:07,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257691348]
[2024-12-02 15:05:07,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257691348] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:07,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997000327]
[2024-12-02 15:05:07,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:05:07,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:07,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:08,000 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:08,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-12-02 15:05:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:08,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:08,085 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked.
[2024-12-02 15:05:08,246 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked.
[2024-12-02 15:05:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997000327] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:08,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33
[2024-12-02 15:05:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152208587]
[2024-12-02 15:05:08,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:08,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2024-12-02 15:05:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:08,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2024-12-02 15:05:08,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122
[2024-12-02 15:05:08,832 INFO L87 Difference]: Start difference. First operand 794 states and 1158 transitions. Second operand has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20)
[2024-12-02 15:05:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:09,319 INFO L93 Difference]: Finished difference Result 1225 states and 1902 transitions.
[2024-12-02 15:05:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2024-12-02 15:05:09,319 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) Word has length 108
[2024-12-02 15:05:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:09,328 INFO L225 Difference]: With dead ends: 1225
[2024-12-02 15:05:09,328 INFO L226 Difference]: Without dead ends: 1223
[2024-12-02 15:05:09,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 193 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=1707, Unknown=0, NotChecked=0, Total=1980
[2024-12-02 15:05:09,331 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:09,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 662 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-12-02 15:05:09,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states.
[2024-12-02 15:05:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 900.
[2024-12-02 15:05:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 714 states have (on average 1.072829131652661) internal successors, (766), 699 states have internal predecessors, (766), 95 states have call successors, (95), 20 states have call predecessors, (95), 87 states have return successors, (534), 180 states have call predecessors, (534), 94 states have call successors, (534)
[2024-12-02 15:05:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1395 transitions.
[2024-12-02 15:05:09,428 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1395 transitions. Word has length 108
[2024-12-02 15:05:09,428 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:09,428 INFO L471 AbstractCegarLoop]: Abstraction has 900 states and 1395 transitions.
[2024-12-02 15:05:09,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20)
[2024-12-02 15:05:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1395 transitions.
[2024-12-02 15:05:09,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2024-12-02 15:05:09,430 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:09,430 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:05:09,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-12-02 15:05:09,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2024-12-02 15:05:09,631 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:09,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:09,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1104785409, now seen corresponding path program 1 times
[2024-12-02 15:05:09,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:09,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371496322]
[2024-12-02 15:05:09,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:05:09,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked.
[2024-12-02 15:05:09,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:09,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371496322]
[2024-12-02 15:05:09,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371496322] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:09,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164926178]
[2024-12-02 15:05:09,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:05:09,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:09,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:09,891 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:09,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-12-02 15:05:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:09,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:09,984 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked.
[2024-12-02 15:05:10,063 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked.
[2024-12-02 15:05:10,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164926178] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:10,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:10,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17
[2024-12-02 15:05:10,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083445351]
[2024-12-02 15:05:10,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:10,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-12-02 15:05:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:10,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-12-02 15:05:10,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272
[2024-12-02 15:05:10,342 INFO L87 Difference]: Start difference. First operand 900 states and 1395 transitions. Second operand has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9)
[2024-12-02 15:05:10,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:10,673 INFO L93 Difference]: Finished difference Result 1743 states and 2758 transitions.
[2024-12-02 15:05:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-12-02 15:05:10,674 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 142
[2024-12-02 15:05:10,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:10,678 INFO L225 Difference]: With dead ends: 1743
[2024-12-02 15:05:10,678 INFO L226 Difference]: Without dead ends: 921
[2024-12-02 15:05:10,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 275 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462
[2024-12-02 15:05:10,682 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 152 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:10,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 375 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 15:05:10,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states.
[2024-12-02 15:05:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 912.
[2024-12-02 15:05:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 724 states have (on average 1.0704419889502763) internal successors, (775), 708 states have internal predecessors, (775), 96 states have call successors, (96), 20 states have call predecessors, (96), 88 states have return successors, (539), 183 states have call predecessors, (539), 95 states have call successors, (539)
[2024-12-02 15:05:10,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1410 transitions.
[2024-12-02 15:05:10,736 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1410 transitions. Word has length 142
[2024-12-02 15:05:10,736 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:10,736 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 1410 transitions.
[2024-12-02 15:05:10,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9)
[2024-12-02 15:05:10,736 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1410 transitions.
[2024-12-02 15:05:10,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180
[2024-12-02 15:05:10,737 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:10,737 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1]
[2024-12-02 15:05:10,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-12-02 15:05:10,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2024-12-02 15:05:10,938 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:10,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1348894490, now seen corresponding path program 2 times
[2024-12-02 15:05:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:10,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197025394]
[2024-12-02 15:05:10,939 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:05:10,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:10,954 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:05:10,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 97 proven. 207 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked.
[2024-12-02 15:05:11,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:11,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197025394]
[2024-12-02 15:05:11,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197025394] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:11,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930811524]
[2024-12-02 15:05:11,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:05:11,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:11,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:11,226 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:11,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-12-02 15:05:11,317 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:05:11,317 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:11,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 33 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:11,321 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 65 proven. 91 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked.
[2024-12-02 15:05:11,846 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 91 proven. 83 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked.
[2024-12-02 15:05:13,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930811524] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:13,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:13,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 26] total 55
[2024-12-02 15:05:13,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887853998]
[2024-12-02 15:05:13,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:13,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states
[2024-12-02 15:05:13,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:13,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants.
[2024-12-02 15:05:13,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=2733, Unknown=0, NotChecked=0, Total=2970
[2024-12-02 15:05:13,504 INFO L87 Difference]: Start difference. First operand 912 states and 1410 transitions. Second operand has 55 states, 54 states have (on average 3.4444444444444446) internal successors, (186), 51 states have internal predecessors, (186), 21 states have call successors, (27), 5 states have call predecessors, (27), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38)
[2024-12-02 15:05:18,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:18,334 INFO L93 Difference]: Finished difference Result 2601 states and 4405 transitions.
[2024-12-02 15:05:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states.
[2024-12-02 15:05:18,335 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 3.4444444444444446) internal successors, (186), 51 states have internal predecessors, (186), 21 states have call successors, (27), 5 states have call predecessors, (27), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38) Word has length 179
[2024-12-02 15:05:18,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:18,343 INFO L225 Difference]: With dead ends: 2601
[2024-12-02 15:05:18,343 INFO L226 Difference]: Without dead ends: 1755
[2024-12-02 15:05:18,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 310 SyntacticMatches, 16 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9157 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2963, Invalid=23769, Unknown=0, NotChecked=0, Total=26732
[2024-12-02 15:05:18,352 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 486 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 3775 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 4014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:18,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 545 Invalid, 4014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3775 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2024-12-02 15:05:18,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states.
[2024-12-02 15:05:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 925.
[2024-12-02 15:05:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 730 states have (on average 1.0575342465753426) internal successors, (772), 721 states have internal predecessors, (772), 96 states have call successors, (96), 20 states have call predecessors, (96), 95 states have return successors, (554), 183 states have call predecessors, (554), 95 states have call successors, (554)
[2024-12-02 15:05:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1422 transitions.
[2024-12-02 15:05:18,438 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1422 transitions. Word has length 179
[2024-12-02 15:05:18,439 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:18,439 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1422 transitions.
[2024-12-02 15:05:18,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 3.4444444444444446) internal successors, (186), 51 states have internal predecessors, (186), 21 states have call successors, (27), 5 states have call predecessors, (27), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38)
[2024-12-02 15:05:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1422 transitions.
[2024-12-02 15:05:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271
[2024-12-02 15:05:18,441 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:18,441 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 12, 11, 10, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 1, 1, 1, 1]
[2024-12-02 15:05:18,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2024-12-02 15:05:18,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:18,642 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:18,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1856100524, now seen corresponding path program 2 times
[2024-12-02 15:05:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:18,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617216961]
[2024-12-02 15:05:18,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:05:18,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:18,672 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:05:18,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 162 proven. 181 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked.
[2024-12-02 15:05:18,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:18,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617216961]
[2024-12-02 15:05:18,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617216961] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:18,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802366065]
[2024-12-02 15:05:18,884 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:05:18,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:18,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:18,886 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:18,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-12-02 15:05:19,033 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:05:19,033 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:19,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:19,041 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 690 proven. 141 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked.
[2024-12-02 15:05:19,169 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 136 proven. 293 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked.
[2024-12-02 15:05:19,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802366065] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:19,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:19,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 15] total 20
[2024-12-02 15:05:19,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917334731]
[2024-12-02 15:05:19,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:19,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-12-02 15:05:19,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:19,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-12-02 15:05:19,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380
[2024-12-02 15:05:19,742 INFO L87 Difference]: Start difference. First operand 925 states and 1422 transitions. Second operand has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21)
[2024-12-02 15:05:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:20,179 INFO L93 Difference]: Finished difference Result 1835 states and 2888 transitions.
[2024-12-02 15:05:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-12-02 15:05:20,179 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) Word has length 270
[2024-12-02 15:05:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:20,185 INFO L225 Difference]: With dead ends: 1835
[2024-12-02 15:05:20,185 INFO L226 Difference]: Without dead ends: 987
[2024-12-02 15:05:20,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 527 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756
[2024-12-02 15:05:20,189 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 138 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:20,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 528 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-12-02 15:05:20,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states.
[2024-12-02 15:05:20,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 882.
[2024-12-02 15:05:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 696 states have (on average 1.0531609195402298) internal successors, (733), 689 states have internal predecessors, (733), 89 states have call successors, (89), 21 states have call predecessors, (89), 93 states have return successors, (512), 171 states have call predecessors, (512), 88 states have call successors, (512)
[2024-12-02 15:05:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1334 transitions.
[2024-12-02 15:05:20,291 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1334 transitions. Word has length 270
[2024-12-02 15:05:20,291 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:20,291 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1334 transitions.
[2024-12-02 15:05:20,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21)
[2024-12-02 15:05:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1334 transitions.
[2024-12-02 15:05:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290
[2024-12-02 15:05:20,295 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:20,295 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 14, 12, 11, 11, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 2, 1, 1, 1, 1]
[2024-12-02 15:05:20,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2024-12-02 15:05:20,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:20,495 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:20,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash 778970564, now seen corresponding path program 3 times
[2024-12-02 15:05:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:20,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143836581]
[2024-12-02 15:05:20,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:05:20,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:20,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-12-02 15:05:20,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 303 proven. 35 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked.
[2024-12-02 15:05:20,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:20,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143836581]
[2024-12-02 15:05:20,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143836581] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:20,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338588497]
[2024-12-02 15:05:20,654 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:05:20,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:20,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:20,657 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:20,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2024-12-02 15:05:20,772 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-12-02 15:05:20,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:20,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:20,779 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 581 proven. 3 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked.
[2024-12-02 15:05:20,848 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 303 proven. 35 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked.
[2024-12-02 15:05:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338588497] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:21,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:21,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14
[2024-12-02 15:05:21,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549080704]
[2024-12-02 15:05:21,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:21,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-12-02 15:05:21,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:21,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-12-02 15:05:21,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182
[2024-12-02 15:05:21,303 INFO L87 Difference]: Start difference. First operand 882 states and 1334 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 5 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18)
[2024-12-02 15:05:21,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:21,457 INFO L93 Difference]: Finished difference Result 1523 states and 2467 transitions.
[2024-12-02 15:05:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 15:05:21,458 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 5 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 289
[2024-12-02 15:05:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:21,463 INFO L225 Difference]: With dead ends: 1523
[2024-12-02 15:05:21,463 INFO L226 Difference]: Without dead ends: 672
[2024-12-02 15:05:21,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 571 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2024-12-02 15:05:21,468 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 39 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:21,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 215 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 15:05:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states.
[2024-12-02 15:05:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 641.
[2024-12-02 15:05:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 505 states have (on average 1.0455445544554456) internal successors, (528), 504 states have internal predecessors, (528), 66 states have call successors, (66), 21 states have call predecessors, (66), 66 states have return successors, (288), 115 states have call predecessors, (288), 65 states have call successors, (288)
[2024-12-02 15:05:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 882 transitions.
[2024-12-02 15:05:21,548 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 882 transitions. Word has length 289
[2024-12-02 15:05:21,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:21,549 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 882 transitions.
[2024-12-02 15:05:21,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 5 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18)
[2024-12-02 15:05:21,549 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 882 transitions.
[2024-12-02 15:05:21,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254
[2024-12-02 15:05:21,551 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:21,551 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1]
[2024-12-02 15:05:21,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2024-12-02 15:05:21,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:21,752 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:21,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:21,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1942864476, now seen corresponding path program 4 times
[2024-12-02 15:05:21,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:21,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444875023]
[2024-12-02 15:05:21,753 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 15:05:21,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:21,783 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 15:05:21,783 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked.
[2024-12-02 15:05:23,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:23,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444875023]
[2024-12-02 15:05:23,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444875023] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:23,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342281477]
[2024-12-02 15:05:23,276 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 15:05:23,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:23,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:23,278 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:23,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2024-12-02 15:05:23,443 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 15:05:23,443 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:23,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 49 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:23,451 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked.
[2024-12-02 15:05:23,828 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked.
[2024-12-02 15:05:26,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342281477] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:26,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:26,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47
[2024-12-02 15:05:26,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318238432]
[2024-12-02 15:05:26,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:26,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2024-12-02 15:05:26,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:26,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2024-12-02 15:05:26,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256
[2024-12-02 15:05:26,928 INFO L87 Difference]: Start difference. First operand 641 states and 882 transitions. Second operand has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32)
[2024-12-02 15:05:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:27,433 INFO L93 Difference]: Finished difference Result 870 states and 1211 transitions.
[2024-12-02 15:05:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2024-12-02 15:05:27,433 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) Word has length 253
[2024-12-02 15:05:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:27,439 INFO L225 Difference]: With dead ends: 870
[2024-12-02 15:05:27,439 INFO L226 Difference]: Without dead ends: 849
[2024-12-02 15:05:27,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 474 SyntacticMatches, 33 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=433, Invalid=2873, Unknown=0, NotChecked=0, Total=3306
[2024-12-02 15:05:27,441 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:27,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 620 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-12-02 15:05:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states.
[2024-12-02 15:05:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 655.
[2024-12-02 15:05:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 516 states have (on average 1.0348837209302326) internal successors, (534), 515 states have internal predecessors, (534), 66 states have call successors, (66), 21 states have call predecessors, (66), 69 states have return successors, (300), 118 states have call predecessors, (300), 65 states have call successors, (300)
[2024-12-02 15:05:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 900 transitions.
[2024-12-02 15:05:27,491 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 900 transitions. Word has length 253
[2024-12-02 15:05:27,492 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:27,492 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 900 transitions.
[2024-12-02 15:05:27,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32)
[2024-12-02 15:05:27,492 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 900 transitions.
[2024-12-02 15:05:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2024-12-02 15:05:27,494 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:27,494 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 15, 14, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 3, 2, 1, 1, 1, 1]
[2024-12-02 15:05:27,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2024-12-02 15:05:27,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:27,695 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:27,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1657258714, now seen corresponding path program 3 times
[2024-12-02 15:05:27,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:27,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446893618]
[2024-12-02 15:05:27,696 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:05:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:27,716 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2024-12-02 15:05:27,716 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1804 backedges. 325 proven. 25 refuted. 0 times theorem prover too weak. 1454 trivial. 0 not checked.
[2024-12-02 15:05:27,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:27,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446893618]
[2024-12-02 15:05:27,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446893618] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:27,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077652217]
[2024-12-02 15:05:27,799 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:05:27,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:27,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:27,801 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:27,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2024-12-02 15:05:27,962 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2024-12-02 15:05:27,962 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:27,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:27,968 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1804 backedges. 622 proven. 4 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked.
[2024-12-02 15:05:28,009 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1804 backedges. 323 proven. 27 refuted. 0 times theorem prover too weak. 1454 trivial. 0 not checked.
[2024-12-02 15:05:28,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077652217] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:28,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:28,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11
[2024-12-02 15:05:28,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311641326]
[2024-12-02 15:05:28,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:28,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-12-02 15:05:28,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:28,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-12-02 15:05:28,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2024-12-02 15:05:28,477 INFO L87 Difference]: Start difference. First operand 655 states and 900 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)
[2024-12-02 15:05:28,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:28,629 INFO L93 Difference]: Finished difference Result 1093 states and 1560 transitions.
[2024-12-02 15:05:28,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-12-02 15:05:28,629 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 327
[2024-12-02 15:05:28,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:28,634 INFO L225 Difference]: With dead ends: 1093
[2024-12-02 15:05:28,634 INFO L226 Difference]: Without dead ends: 519
[2024-12-02 15:05:28,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 648 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2024-12-02 15:05:28,640 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 42 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:28,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 169 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 15:05:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states.
[2024-12-02 15:05:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 449.
[2024-12-02 15:05:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 352 states have (on average 1.0340909090909092) internal successors, (364), 356 states have internal predecessors, (364), 50 states have call successors, (50), 21 states have call predecessors, (50), 43 states have return successors, (108), 71 states have call predecessors, (108), 49 states have call successors, (108)
[2024-12-02 15:05:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 522 transitions.
[2024-12-02 15:05:28,689 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 522 transitions. Word has length 327
[2024-12-02 15:05:28,689 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:28,689 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 522 transitions.
[2024-12-02 15:05:28,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)
[2024-12-02 15:05:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 522 transitions.
[2024-12-02 15:05:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366
[2024-12-02 15:05:28,693 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:28,693 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 17, 16, 16, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 5, 5, 2, 1, 1, 1, 1]
[2024-12-02 15:05:28,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2024-12-02 15:05:28,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:28,894 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:28,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1965406224, now seen corresponding path program 4 times
[2024-12-02 15:05:28,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:28,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287022348]
[2024-12-02 15:05:28,895 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 15:05:28,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:28,932 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 15:05:28,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 354 proven. 205 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked.
[2024-12-02 15:05:29,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:29,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287022348]
[2024-12-02 15:05:29,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287022348] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:29,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025540448]
[2024-12-02 15:05:29,153 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 15:05:29,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:29,155 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:29,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2024-12-02 15:05:29,350 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 15:05:29,350 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:29,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:29,356 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 354 proven. 205 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked.
[2024-12-02 15:05:29,425 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 354 proven. 207 refuted. 0 times theorem prover too weak. 1730 trivial. 0 not checked.
[2024-12-02 15:05:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025540448] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:30,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:30,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 15
[2024-12-02 15:05:30,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184833782]
[2024-12-02 15:05:30,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:30,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-12-02 15:05:30,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:30,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-12-02 15:05:30,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210
[2024-12-02 15:05:30,089 INFO L87 Difference]: Start difference. First operand 449 states and 522 transitions. Second operand has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13)
[2024-12-02 15:05:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:30,321 INFO L93 Difference]: Finished difference Result 837 states and 995 transitions.
[2024-12-02 15:05:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-12-02 15:05:30,322 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 365
[2024-12-02 15:05:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:30,325 INFO L225 Difference]: With dead ends: 837
[2024-12-02 15:05:30,325 INFO L226 Difference]: Without dead ends: 502
[2024-12-02 15:05:30,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 722 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342
[2024-12-02 15:05:30,327 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 83 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:30,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 221 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 15:05:30,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states.
[2024-12-02 15:05:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 449.
[2024-12-02 15:05:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 352 states have (on average 1.0340909090909092) internal successors, (364), 356 states have internal predecessors, (364), 50 states have call successors, (50), 21 states have call predecessors, (50), 43 states have return successors, (106), 71 states have call predecessors, (106), 49 states have call successors, (106)
[2024-12-02 15:05:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 520 transitions.
[2024-12-02 15:05:30,387 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 520 transitions. Word has length 365
[2024-12-02 15:05:30,387 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:30,387 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 520 transitions.
[2024-12-02 15:05:30,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13)
[2024-12-02 15:05:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 520 transitions.
[2024-12-02 15:05:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385
[2024-12-02 15:05:30,391 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:30,391 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 19, 18, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 5, 3, 1, 1, 1, 1]
[2024-12-02 15:05:30,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2024-12-02 15:05:30,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:30,592 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:30,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:30,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1640309168, now seen corresponding path program 5 times
[2024-12-02 15:05:30,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:30,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153962102]
[2024-12-02 15:05:30,593 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 15:05:30,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:30,642 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s)
[2024-12-02 15:05:30,642 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 468 proven. 488 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked.
[2024-12-02 15:05:31,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153962102]
[2024-12-02 15:05:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153962102] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382739837]
[2024-12-02 15:05:31,166 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 15:05:31,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:31,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:31,168 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:31,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2024-12-02 15:05:31,406 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s)
[2024-12-02 15:05:31,406 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:31,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:31,415 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 446 proven. 555 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked.
[2024-12-02 15:05:31,582 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 450 proven. 565 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked.
[2024-12-02 15:05:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382739837] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:32,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:32,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 19] total 29
[2024-12-02 15:05:32,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23312268]
[2024-12-02 15:05:32,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:32,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2024-12-02 15:05:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:32,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2024-12-02 15:05:32,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812
[2024-12-02 15:05:32,875 INFO L87 Difference]: Start difference. First operand 449 states and 520 transitions. Second operand has 29 states, 29 states have (on average 5.758620689655173) internal successors, (167), 29 states have internal predecessors, (167), 19 states have call successors, (29), 1 states have call predecessors, (29), 10 states have return successors, (32), 17 states have call predecessors, (32), 19 states have call successors, (32)
[2024-12-02 15:05:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:33,427 INFO L93 Difference]: Finished difference Result 796 states and 963 transitions.
[2024-12-02 15:05:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2024-12-02 15:05:33,428 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.758620689655173) internal successors, (167), 29 states have internal predecessors, (167), 19 states have call successors, (29), 1 states have call predecessors, (29), 10 states have return successors, (32), 17 states have call predecessors, (32), 19 states have call successors, (32) Word has length 384
[2024-12-02 15:05:33,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:33,431 INFO L225 Difference]: With dead ends: 796
[2024-12-02 15:05:33,431 INFO L226 Difference]: Without dead ends: 481
[2024-12-02 15:05:33,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 753 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=328, Invalid=1652, Unknown=0, NotChecked=0, Total=1980
[2024-12-02 15:05:33,433 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 113 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:33,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 624 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-12-02 15:05:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states.
[2024-12-02 15:05:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 446.
[2024-12-02 15:05:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 352 states have (on average 1.0340909090909092) internal successors, (364), 352 states have internal predecessors, (364), 52 states have call successors, (52), 29 states have call predecessors, (52), 38 states have return successors, (91), 64 states have call predecessors, (91), 51 states have call successors, (91)
[2024-12-02 15:05:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 507 transitions.
[2024-12-02 15:05:33,466 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 507 transitions. Word has length 384
[2024-12-02 15:05:33,466 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:33,466 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 507 transitions.
[2024-12-02 15:05:33,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.758620689655173) internal successors, (167), 29 states have internal predecessors, (167), 19 states have call successors, (29), 1 states have call predecessors, (29), 10 states have return successors, (32), 17 states have call predecessors, (32), 19 states have call successors, (32)
[2024-12-02 15:05:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 507 transitions.
[2024-12-02 15:05:33,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383
[2024-12-02 15:05:33,468 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:33,468 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 19, 18, 16, 14, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 5, 5, 3, 1, 1, 1, 1]
[2024-12-02 15:05:33,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2024-12-02 15:05:33,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:33,669 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:33,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:33,669 INFO L85 PathProgramCache]: Analyzing trace with hash 538266174, now seen corresponding path program 6 times
[2024-12-02 15:05:33,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:33,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220786327]
[2024-12-02 15:05:33,669 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 15:05:33,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:33,693 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2024-12-02 15:05:33,693 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 355 proven. 6 refuted. 0 times theorem prover too weak. 2138 trivial. 0 not checked.
[2024-12-02 15:05:33,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:33,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220786327]
[2024-12-02 15:05:33,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220786327] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:33,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975495308]
[2024-12-02 15:05:33,766 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 15:05:33,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:33,768 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:33,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2024-12-02 15:05:33,922 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2024-12-02 15:05:33,922 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:33,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:33,927 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 438 proven. 7 refuted. 0 times theorem prover too weak. 2054 trivial. 0 not checked.
[2024-12-02 15:05:33,990 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 438 proven. 7 refuted. 0 times theorem prover too weak. 2054 trivial. 0 not checked.
[2024-12-02 15:05:34,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975495308] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:34,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:34,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 14
[2024-12-02 15:05:34,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225389316]
[2024-12-02 15:05:34,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:34,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-12-02 15:05:34,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:34,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-12-02 15:05:34,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2024-12-02 15:05:34,583 INFO L87 Difference]: Start difference. First operand 446 states and 507 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 7 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (15), 4 states have call predecessors, (15), 7 states have call successors, (15)
[2024-12-02 15:05:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:34,780 INFO L93 Difference]: Finished difference Result 680 states and 780 transitions.
[2024-12-02 15:05:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-12-02 15:05:34,780 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 7 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (15), 4 states have call predecessors, (15), 7 states have call successors, (15) Word has length 382
[2024-12-02 15:05:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:34,782 INFO L225 Difference]: With dead ends: 680
[2024-12-02 15:05:34,782 INFO L226 Difference]: Without dead ends: 358
[2024-12-02 15:05:34,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 754 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420
[2024-12-02 15:05:34,783 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 72 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:34,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 186 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 15:05:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states.
[2024-12-02 15:05:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358.
[2024-12-02 15:05:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 284 states have (on average 1.0246478873239437) internal successors, (291), 284 states have internal predecessors, (291), 44 states have call successors, (44), 29 states have call predecessors, (44), 28 states have return successors, (55), 44 states have call predecessors, (55), 43 states have call successors, (55)
[2024-12-02 15:05:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 390 transitions.
[2024-12-02 15:05:34,806 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 390 transitions. Word has length 382
[2024-12-02 15:05:34,806 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:34,807 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 390 transitions.
[2024-12-02 15:05:34,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 7 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (15), 4 states have call predecessors, (15), 7 states have call successors, (15)
[2024-12-02 15:05:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 390 transitions.
[2024-12-02 15:05:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385
[2024-12-02 15:05:34,808 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:34,808 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 19, 18, 16, 16, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 5, 5, 3, 1, 1, 1, 1]
[2024-12-02 15:05:34,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2024-12-02 15:05:35,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2024-12-02 15:05:35,009 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:35,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1813740694, now seen corresponding path program 7 times
[2024-12-02 15:05:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:35,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273863448]
[2024-12-02 15:05:35,010 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 15:05:35,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 440 proven. 273 refuted. 0 times theorem prover too weak. 1815 trivial. 0 not checked.
[2024-12-02 15:05:35,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:35,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273863448]
[2024-12-02 15:05:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273863448] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:35,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050968582]
[2024-12-02 15:05:35,287 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 15:05:35,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:35,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:35,289 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:35,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2024-12-02 15:05:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:35,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:35,460 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 440 proven. 273 refuted. 0 times theorem prover too weak. 1815 trivial. 0 not checked.
[2024-12-02 15:05:35,519 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 440 proven. 280 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked.
[2024-12-02 15:05:36,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050968582] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:36,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:36,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 17
[2024-12-02 15:05:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83800882]
[2024-12-02 15:05:36,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:36,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-12-02 15:05:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:36,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-12-02 15:05:36,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272
[2024-12-02 15:05:36,213 INFO L87 Difference]: Start difference. First operand 358 states and 390 transitions. Second operand has 17 states, 16 states have (on average 6.0625) internal successors, (97), 15 states have internal predecessors, (97), 12 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 10 states have call successors, (15)
[2024-12-02 15:05:36,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:36,442 INFO L93 Difference]: Finished difference Result 618 states and 676 transitions.
[2024-12-02 15:05:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-12-02 15:05:36,443 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.0625) internal successors, (97), 15 states have internal predecessors, (97), 12 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 10 states have call successors, (15) Word has length 384
[2024-12-02 15:05:36,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:36,446 INFO L225 Difference]: With dead ends: 618
[2024-12-02 15:05:36,446 INFO L226 Difference]: Without dead ends: 381
[2024-12-02 15:05:36,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 759 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462
[2024-12-02 15:05:36,447 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 95 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:36,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 243 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 15:05:36,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states.
[2024-12-02 15:05:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 363.
[2024-12-02 15:05:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 288 states have (on average 1.0243055555555556) internal successors, (295), 288 states have internal predecessors, (295), 44 states have call successors, (44), 29 states have call predecessors, (44), 29 states have return successors, (56), 45 states have call predecessors, (56), 43 states have call successors, (56)
[2024-12-02 15:05:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 395 transitions.
[2024-12-02 15:05:36,470 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 395 transitions. Word has length 384
[2024-12-02 15:05:36,470 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:36,470 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 395 transitions.
[2024-12-02 15:05:36,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.0625) internal successors, (97), 15 states have internal predecessors, (97), 12 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 10 states have call successors, (15)
[2024-12-02 15:05:36,471 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 395 transitions.
[2024-12-02 15:05:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405
[2024-12-02 15:05:36,473 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:36,473 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 17, 17, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 6, 4, 4, 1, 1, 1, 1]
[2024-12-02 15:05:36,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2024-12-02 15:05:36,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2024-12-02 15:05:36,674 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:36,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:36,674 INFO L85 PathProgramCache]: Analyzing trace with hash 322047479, now seen corresponding path program 8 times
[2024-12-02 15:05:36,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:36,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391851087]
[2024-12-02 15:05:36,674 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:05:36,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:36,703 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:05:36,703 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 440 proven. 701 refuted. 0 times theorem prover too weak. 1661 trivial. 0 not checked.
[2024-12-02 15:05:38,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:38,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391851087]
[2024-12-02 15:05:38,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391851087] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:38,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538708355]
[2024-12-02 15:05:38,690 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:05:38,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:38,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:38,692 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:38,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2024-12-02 15:05:38,881 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:05:38,881 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:38,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 81 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:38,888 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 432 proven. 525 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked.
[2024-12-02 15:05:39,360 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 585 proven. 468 refuted. 0 times theorem prover too weak. 1749 trivial. 0 not checked.
[2024-12-02 15:05:46,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538708355] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:46,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:46,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 30, 37] total 68
[2024-12-02 15:05:46,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303756342]
[2024-12-02 15:05:46,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:46,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states
[2024-12-02 15:05:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:46,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants.
[2024-12-02 15:05:46,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=4133, Unknown=0, NotChecked=0, Total=4692
[2024-12-02 15:05:46,357 INFO L87 Difference]: Start difference. First operand 363 states and 395 transitions. Second operand has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46)
[2024-12-02 15:05:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:46,641 INFO L93 Difference]: Finished difference Result 417 states and 454 transitions.
[2024-12-02 15:05:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2024-12-02 15:05:46,642 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) Word has length 404
[2024-12-02 15:05:46,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:46,644 INFO L225 Difference]: With dead ends: 417
[2024-12-02 15:05:46,644 INFO L226 Difference]: Without dead ends: 407
[2024-12-02 15:05:46,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 769 SyntacticMatches, 51 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5570 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=658, Invalid=4744, Unknown=0, NotChecked=0, Total=5402
[2024-12-02 15:05:46,645 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 16 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:46,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 575 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 15:05:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states.
[2024-12-02 15:05:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 385.
[2024-12-02 15:05:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 306 states have (on average 1.0196078431372548) internal successors, (312), 305 states have internal predecessors, (312), 46 states have call successors, (46), 29 states have call predecessors, (46), 32 states have return successors, (62), 50 states have call predecessors, (62), 45 states have call successors, (62)
[2024-12-02 15:05:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 420 transitions.
[2024-12-02 15:05:46,667 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 420 transitions. Word has length 404
[2024-12-02 15:05:46,667 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:46,667 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 420 transitions.
[2024-12-02 15:05:46,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46)
[2024-12-02 15:05:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 420 transitions.
[2024-12-02 15:05:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596
[2024-12-02 15:05:46,670 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:46,670 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 25, 25, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 10, 6, 5, 1, 1, 1, 1]
[2024-12-02 15:05:46,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2024-12-02 15:05:46,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:46,871 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:46,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash -102097518, now seen corresponding path program 5 times
[2024-12-02 15:05:46,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:46,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967940718]
[2024-12-02 15:05:46,871 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 15:05:46,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:46,927 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s)
[2024-12-02 15:05:46,927 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6240 backedges. 841 proven. 1242 refuted. 0 times theorem prover too weak. 4157 trivial. 0 not checked.
[2024-12-02 15:05:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967940718]
[2024-12-02 15:05:47,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967940718] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601775302]
[2024-12-02 15:05:47,445 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 15:05:47,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:47,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:47,447 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:47,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2024-12-02 15:05:47,830 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s)
[2024-12-02 15:05:47,830 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:47,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:47,843 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6240 backedges. 836 proven. 1237 refuted. 0 times theorem prover too weak. 4167 trivial. 0 not checked.
[2024-12-02 15:05:48,001 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6240 backedges. 844 proven. 1258 refuted. 0 times theorem prover too weak. 4138 trivial. 0 not checked.
[2024-12-02 15:05:50,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601775302] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:50,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:50,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 23] total 29
[2024-12-02 15:05:50,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388835874]
[2024-12-02 15:05:50,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:50,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2024-12-02 15:05:50,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:50,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2024-12-02 15:05:50,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812
[2024-12-02 15:05:50,196 INFO L87 Difference]: Start difference. First operand 385 states and 420 transitions. Second operand has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 22 states have call successors, (30), 1 states have call predecessors, (30), 11 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34)
[2024-12-02 15:05:51,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:51,133 INFO L93 Difference]: Finished difference Result 612 states and 690 transitions.
[2024-12-02 15:05:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2024-12-02 15:05:51,134 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 22 states have call successors, (30), 1 states have call predecessors, (30), 11 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34) Word has length 595
[2024-12-02 15:05:51,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:51,137 INFO L225 Difference]: With dead ends: 612
[2024-12-02 15:05:51,137 INFO L226 Difference]: Without dead ends: 428
[2024-12-02 15:05:51,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1175 SyntacticMatches, 11 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=365, Invalid=1891, Unknown=0, NotChecked=0, Total=2256
[2024-12-02 15:05:51,138 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 165 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:51,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 678 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-12-02 15:05:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states.
[2024-12-02 15:05:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 382.
[2024-12-02 15:05:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 304 states have (on average 1.019736842105263) internal successors, (310), 303 states have internal predecessors, (310), 46 states have call successors, (46), 30 states have call predecessors, (46), 31 states have return successors, (59), 48 states have call predecessors, (59), 45 states have call successors, (59)
[2024-12-02 15:05:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 415 transitions.
[2024-12-02 15:05:51,162 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 415 transitions. Word has length 595
[2024-12-02 15:05:51,163 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:51,163 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 415 transitions.
[2024-12-02 15:05:51,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 22 states have call successors, (30), 1 states have call predecessors, (30), 11 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34)
[2024-12-02 15:05:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 415 transitions.
[2024-12-02 15:05:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614
[2024-12-02 15:05:51,166 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:51,166 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 30, 25, 25, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 9, 7, 6, 1, 1, 1, 1]
[2024-12-02 15:05:51,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2024-12-02 15:05:51,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2024-12-02 15:05:51,367 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:51,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1082031663, now seen corresponding path program 6 times
[2024-12-02 15:05:51,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:51,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456232124]
[2024-12-02 15:05:51,368 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 15:05:51,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:51,460 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s)
[2024-12-02 15:05:51,460 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6634 backedges. 1204 proven. 95 refuted. 0 times theorem prover too weak. 5335 trivial. 0 not checked.
[2024-12-02 15:05:51,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:51,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456232124]
[2024-12-02 15:05:51,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456232124] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:51,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664057647]
[2024-12-02 15:05:51,795 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 15:05:51,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:51,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:51,797 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:51,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2024-12-02 15:05:52,183 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s)
[2024-12-02 15:05:52,183 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:52,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:52,192 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6634 backedges. 1293 proven. 107 refuted. 0 times theorem prover too weak. 5234 trivial. 0 not checked.
[2024-12-02 15:05:52,312 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6634 backedges. 1293 proven. 113 refuted. 0 times theorem prover too weak. 5228 trivial. 0 not checked.
[2024-12-02 15:05:53,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664057647] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:53,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:53,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 22
[2024-12-02 15:05:53,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617507645]
[2024-12-02 15:05:53,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:53,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-12-02 15:05:53,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:53,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-12-02 15:05:53,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462
[2024-12-02 15:05:53,777 INFO L87 Difference]: Start difference. First operand 382 states and 415 transitions. Second operand has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 12 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23)
[2024-12-02 15:05:54,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:54,170 INFO L93 Difference]: Finished difference Result 419 states and 454 transitions.
[2024-12-02 15:05:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-12-02 15:05:54,170 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 12 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23) Word has length 613
[2024-12-02 15:05:54,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:54,173 INFO L225 Difference]: With dead ends: 419
[2024-12-02 15:05:54,173 INFO L226 Difference]: Without dead ends: 408
[2024-12-02 15:05:54,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1251 GetRequests, 1213 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056
[2024-12-02 15:05:54,174 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 100 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:54,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 295 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 15:05:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states.
[2024-12-02 15:05:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 398.
[2024-12-02 15:05:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 317 states have (on average 1.0189274447949528) internal successors, (323), 315 states have internal predecessors, (323), 47 states have call successors, (47), 31 states have call predecessors, (47), 33 states have return successors, (63), 51 states have call predecessors, (63), 46 states have call successors, (63)
[2024-12-02 15:05:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 433 transitions.
[2024-12-02 15:05:54,199 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 433 transitions. Word has length 613
[2024-12-02 15:05:54,200 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:54,200 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 433 transitions.
[2024-12-02 15:05:54,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 12 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23)
[2024-12-02 15:05:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 433 transitions.
[2024-12-02 15:05:54,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595
[2024-12-02 15:05:54,203 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:54,204 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 25, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 9, 7, 5, 1, 1, 1, 1]
[2024-12-02 15:05:54,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2024-12-02 15:05:54,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2024-12-02 15:05:54,404 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:54,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:54,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1893780207, now seen corresponding path program 7 times
[2024-12-02 15:05:54,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:54,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824838111]
[2024-12-02 15:05:54,405 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 15:05:54,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 643 proven. 175 refuted. 0 times theorem prover too weak. 5398 trivial. 0 not checked.
[2024-12-02 15:05:54,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824838111]
[2024-12-02 15:05:54,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824838111] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660518337]
[2024-12-02 15:05:54,727 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 15:05:54,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:54,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:54,729 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:54,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2024-12-02 15:05:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:05:55,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:55,093 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 803 proven. 245 refuted. 0 times theorem prover too weak. 5168 trivial. 0 not checked.
[2024-12-02 15:05:55,202 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 803 proven. 252 refuted. 0 times theorem prover too weak. 5161 trivial. 0 not checked.
[2024-12-02 15:05:56,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660518337] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:56,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:56,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 13] total 17
[2024-12-02 15:05:56,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377665269]
[2024-12-02 15:05:56,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:56,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-12-02 15:05:56,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:56,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-12-02 15:05:56,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272
[2024-12-02 15:05:56,241 INFO L87 Difference]: Start difference. First operand 398 states and 433 transitions. Second operand has 17 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 10 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19)
[2024-12-02 15:05:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:56,468 INFO L93 Difference]: Finished difference Result 407 states and 441 transitions.
[2024-12-02 15:05:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-12-02 15:05:56,468 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 10 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) Word has length 594
[2024-12-02 15:05:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:56,471 INFO L225 Difference]: With dead ends: 407
[2024-12-02 15:05:56,471 INFO L226 Difference]: Without dead ends: 346
[2024-12-02 15:05:56,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1176 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462
[2024-12-02 15:05:56,472 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 51 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:56,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 266 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 15:05:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states.
[2024-12-02 15:05:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 342.
[2024-12-02 15:05:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 273 states have (on average 1.0183150183150182) internal successors, (278), 271 states have internal predecessors, (278), 41 states have call successors, (41), 29 states have call predecessors, (41), 27 states have return successors, (47), 41 states have call predecessors, (47), 40 states have call successors, (47)
[2024-12-02 15:05:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 366 transitions.
[2024-12-02 15:05:56,511 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 366 transitions. Word has length 594
[2024-12-02 15:05:56,512 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:56,512 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 366 transitions.
[2024-12-02 15:05:56,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 10 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19)
[2024-12-02 15:05:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 366 transitions.
[2024-12-02 15:05:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653
[2024-12-02 15:05:56,518 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:56,518 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 32, 27, 26, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 10, 10, 8, 6, 1, 1, 1, 1]
[2024-12-02 15:05:56,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2024-12-02 15:05:56,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:56,719 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:56,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1770302740, now seen corresponding path program 8 times
[2024-12-02 15:05:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742389730]
[2024-12-02 15:05:56,720 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:05:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:56,795 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:05:56,796 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7528 backedges. 572 proven. 815 refuted. 0 times theorem prover too weak. 6141 trivial. 0 not checked.
[2024-12-02 15:05:57,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:05:57,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742389730]
[2024-12-02 15:05:57,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742389730] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:05:57,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118231615]
[2024-12-02 15:05:57,216 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:05:57,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:57,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:05:57,218 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:05:57,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2024-12-02 15:05:57,606 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:05:57,606 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:05:57,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-12-02 15:05:57,619 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:05:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7528 backedges. 4178 proven. 270 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked.
[2024-12-02 15:05:57,714 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:05:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7528 backedges. 576 proven. 823 refuted. 0 times theorem prover too weak. 6129 trivial. 0 not checked.
[2024-12-02 15:05:59,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118231615] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:05:59,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:05:59,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 15] total 17
[2024-12-02 15:05:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233811382]
[2024-12-02 15:05:59,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:05:59,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-12-02 15:05:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:05:59,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-12-02 15:05:59,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272
[2024-12-02 15:05:59,248 INFO L87 Difference]: Start difference. First operand 342 states and 366 transitions. Second operand has 17 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 12 states have call successors, (23), 3 states have call predecessors, (23), 7 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24)
[2024-12-02 15:05:59,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:05:59,477 INFO L93 Difference]: Finished difference Result 574 states and 613 transitions.
[2024-12-02 15:05:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-12-02 15:05:59,478 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 12 states have call successors, (23), 3 states have call predecessors, (23), 7 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24) Word has length 652
[2024-12-02 15:05:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:05:59,480 INFO L225 Difference]: With dead ends: 574
[2024-12-02 15:05:59,480 INFO L226 Difference]: Without dead ends: 355
[2024-12-02 15:05:59,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1323 GetRequests, 1295 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462
[2024-12-02 15:05:59,481 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 15:05:59,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 191 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 15:05:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states.
[2024-12-02 15:05:59,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 337.
[2024-12-02 15:05:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 269 states have (on average 1.0185873605947955) internal successors, (274), 267 states have internal predecessors, (274), 41 states have call successors, (41), 29 states have call predecessors, (41), 26 states have return successors, (45), 40 states have call predecessors, (45), 40 states have call successors, (45)
[2024-12-02 15:05:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 360 transitions.
[2024-12-02 15:05:59,503 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 360 transitions. Word has length 652
[2024-12-02 15:05:59,503 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:05:59,503 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 360 transitions.
[2024-12-02 15:05:59,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 12 states have call successors, (23), 3 states have call predecessors, (23), 7 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24)
[2024-12-02 15:05:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 360 transitions.
[2024-12-02 15:05:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654
[2024-12-02 15:05:59,507 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:05:59,507 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 32, 27, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1]
[2024-12-02 15:05:59,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2024-12-02 15:05:59,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:05:59,708 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2024-12-02 15:05:59,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:05:59,708 INFO L85 PathProgramCache]: Analyzing trace with hash -330128645, now seen corresponding path program 9 times
[2024-12-02 15:05:59,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:05:59,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516558577]
[2024-12-02 15:05:59,709 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:05:59,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:05:59,801 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s)
[2024-12-02 15:05:59,801 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:06:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1333 proven. 1858 refuted. 0 times theorem prover too weak. 4363 trivial. 0 not checked.
[2024-12-02 15:06:04,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:06:04,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516558577]
[2024-12-02 15:06:04,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516558577] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:06:04,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791272222]
[2024-12-02 15:06:04,582 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:06:04,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:06:04,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:06:04,583 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:06:04,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2024-12-02 15:06:04,889 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s)
[2024-12-02 15:06:04,889 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:06:04,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 133 conjuncts are in the unsatisfiable core
[2024-12-02 15:06:04,897 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:06:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1237 proven. 1440 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked.
[2024-12-02 15:06:05,529 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:06:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1543 proven. 1316 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked.
[2024-12-02 15:06:21,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791272222] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:06:21,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:06:21,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 36, 46] total 80
[2024-12-02 15:06:21,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035746264]
[2024-12-02 15:06:21,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:06:21,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states
[2024-12-02 15:06:21,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:06:21,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants.
[2024-12-02 15:06:21,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=766, Invalid=5714, Unknown=0, NotChecked=0, Total=6480
[2024-12-02 15:06:21,384 INFO L87 Difference]: Start difference. First operand 337 states and 360 transitions. Second operand has 81 states, 80 states have (on average 2.625) internal successors, (210), 81 states have internal predecessors, (210), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (55), 55 states have call predecessors, (55), 20 states have call successors, (55)
[2024-12-02 15:06:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:06:21,594 INFO L93 Difference]: Finished difference Result 344 states and 368 transitions.
[2024-12-02 15:06:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2024-12-02 15:06:21,594 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 2.625) internal successors, (210), 81 states have internal predecessors, (210), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (55), 55 states have call predecessors, (55), 20 states have call successors, (55) Word has length 653
[2024-12-02 15:06:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:06:21,595 INFO L225 Difference]: With dead ends: 344
[2024-12-02 15:06:21,595 INFO L226 Difference]: Without dead ends: 0
[2024-12-02 15:06:21,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1440 GetRequests, 1266 SyntacticMatches, 92 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8531 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=845, Invalid=6127, Unknown=0, NotChecked=0, Total=6972
[2024-12-02 15:06:21,597 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 15:06:21,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 735 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 15:06:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-12-02 15:06:21,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-12-02 15:06:21,598 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 15:06:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-12-02 15:06:21,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 653
[2024-12-02 15:06:21,599 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:06:21,599 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-12-02 15:06:21,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 2.625) internal successors, (210), 81 states have internal predecessors, (210), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (55), 55 states have call predecessors, (55), 20 states have call successors, (55)
[2024-12-02 15:06:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-12-02 15:06:21,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-12-02 15:06:21,602 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining)
[2024-12-02 15:06:21,603 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining)
[2024-12-02 15:06:21,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2024-12-02 15:06:21,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:06:21,806 INFO L422 BasicCegarLoop]: Path program histogram: [9, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:06:21,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-12-02 15:07:12,532 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-12-02 15:07:12,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:07:12 BoogieIcfgContainer
[2024-12-02 15:07:12,536 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-12-02 15:07:12,536 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-12-02 15:07:12,536 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-12-02 15:07:12,536 INFO L274 PluginConnector]: Witness Printer initialized
[2024-12-02 15:07:12,537 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:04:44" (3/4) ...
[2024-12-02 15:07:12,538 INFO L146 WitnessPrinter]: Generating witness for correct program
[2024-12-02 15:07:12,542 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2
[2024-12-02 15:07:12,542 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1
[2024-12-02 15:07:12,545 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges
[2024-12-02 15:07:12,545 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-12-02 15:07:12,545 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-12-02 15:07:12,545 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-12-02 15:07:12,596 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml
[2024-12-02 15:07:12,596 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/witness.yml
[2024-12-02 15:07:12,596 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-12-02 15:07:12,597 INFO L158 Benchmark]: Toolchain (without parser) took 148507.34ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 92.8MB in the beginning and 1.0GB in the end (delta: -908.6MB). Peak memory consumption was 206.7MB. Max. memory is 16.1GB.
[2024-12-02 15:07:12,597 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:07:12,597 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.13ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 82.1MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 15:07:12,597 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.18ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 81.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:07:12,597 INFO L158 Benchmark]: Boogie Preprocessor took 29.54ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 79.9MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 15:07:12,597 INFO L158 Benchmark]: RCFGBuilder took 268.96ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 68.3MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 15:07:12,597 INFO L158 Benchmark]: TraceAbstraction took 147920.87ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 67.8MB in the beginning and 1.0GB in the end (delta: -938.1MB). Peak memory consumption was 752.3MB. Max. memory is 16.1GB.
[2024-12-02 15:07:12,597 INFO L158 Benchmark]: Witness Printer took 60.40ms. Allocated memory is still 1.2GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 15:07:12,598 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 197.13ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 82.1MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 25.18ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 81.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 29.54ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 79.9MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 268.96ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 68.3MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 147920.87ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 67.8MB in the beginning and 1.0GB in the end (delta: -938.1MB). Peak memory consumption was 752.3MB. Max. memory is 16.1GB.
* Witness Printer took 60.40ms. Allocated memory is still 1.2GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 25]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 25]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 25]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 25]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 25]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 25]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 15]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 15]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 15]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 15]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 15]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 15]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 53 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 97.1s, OverallIterations: 43, TraceHistogramMax: 34, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 20.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4504 SdHoareTripleChecker+Valid, 10.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4354 mSDsluCounter, 15873 SdHoareTripleChecker+Invalid, 9.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14109 mSDsCounter, 1525 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20794 IncrementalHoareTripleChecker+Invalid, 22319 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1525 mSolverCounterUnsat, 1764 mSDtfsCounter, 20794 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16343 GetRequests, 14708 SyntacticMatches, 378 SemanticMatches, 1257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35563 ImplicationChecksByTransitivity, 17.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=925occurred in iteration=29, InterpolantAutomatonStates: 894, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 43 MinimizatonAttempts, 2712 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 63.3s InterpolantComputationTime, 15803 NumberOfCodeBlocks, 13577 NumberOfCodeBlocksAsserted, 246 NumberOfCheckSat, 23164 ConstructedInterpolants, 0 QuantifiedInterpolants, 38924 SizeOfPredicates, 103 NumberOfNonLiveVariables, 12815 ConjunctsInSsa, 655 ConjunctsInUnsatCore, 104 InterpolantComputations, 15 PerfectInterpolantSequences, 144782/164158 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
12 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2024-12-02 15:07:12,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c901391-ea51-478a-ab60-34ac3748b12f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE