./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i --full-output --architecture 64bit
--------------------------------------------------------------------------------
Checking for overflows
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC --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 64bit --witnessprinter.graph.data.programhash c025debcc565a2dee63ce0651143a120d30d92e148bf87ae3ffecb509f27f776
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 01:34:07,771 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-24 01:34:07,832 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf
[2024-11-24 01:34:07,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 01:34:07,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 01:34:07,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 01:34:07,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 01:34:07,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 01:34:07,891 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 01:34:07,891 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-24 01:34:07,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 01:34:07,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 01:34:07,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 01:34:07,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-24 01:34:07,892 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-24 01:34:07,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 01:34:07,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-24 01:34:07,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-24 01:34:07,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-24 01:34:07,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-24 01:34:07,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 01:34:07,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-24 01:34:07,892 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME
[2024-11-24 01:34:07,893 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-24 01:34:07,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-24 01:34:07,895 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 01:34:07,895 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-24 01:34:07,895 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 01:34:07,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 01:34:07,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 01:34:07,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 01:34:07,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:34:07,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 01:34:07,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 01:34:07,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 01:34:07,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 01:34:07,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:34:07,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 01:34:07,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 01:34:07,897 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-24 01:34:07,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-24 01:34:07,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-24 01:34:07,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 01:34:07,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 01:34:07,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 01:34:07,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 01:34:07,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 01:34:07,899 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_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC
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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c025debcc565a2dee63ce0651143a120d30d92e148bf87ae3ffecb509f27f776
[2024-11-24 01:34:08,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 01:34:08,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 01:34:08,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 01:34:08,238 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-24 01:34:08,238 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-24 01:34:08,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i
[2024-11-24 01:34:11,213 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/data/26304ee23/d0067e9311ff4c1c90cd831350c538de/FLAGef2b8e484
[2024-11-24 01:34:11,561 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-24 01:34:11,563 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i
[2024-11-24 01:34:11,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/data/26304ee23/d0067e9311ff4c1c90cd831350c538de/FLAGef2b8e484
[2024-11-24 01:34:11,772 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/data/26304ee23/d0067e9311ff4c1c90cd831350c538de
[2024-11-24 01:34:11,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 01:34:11,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 01:34:11,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 01:34:11,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 01:34:11,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 01:34:11,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:34:11" (1/1) ...
[2024-11-24 01:34:11,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a86676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:11, skipping insertion in model container
[2024-11-24 01:34:11,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:34:11" (1/1) ...
[2024-11-24 01:34:11,831 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-24 01:34:12,185 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 01:34:12,196 INFO L200 MainTranslator]: Completed pre-run
[2024-11-24 01:34:12,282 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 01:34:12,334 INFO L204 MainTranslator]: Completed translation
[2024-11-24 01:34:12,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12 WrapperNode
[2024-11-24 01:34:12,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 01:34:12,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 01:34:12,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 01:34:12,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 01:34:12,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,392 INFO L138 Inliner]: procedures = 152, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37
[2024-11-24 01:34:12,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 01:34:12,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 01:34:12,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 01:34:12,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 01:34:12,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,409 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,434 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 1 writes are split as follows [1].
[2024-11-24 01:34:12,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,444 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 01:34:12,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 01:34:12,467 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 01:34:12,467 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-24 01:34:12,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (1/1) ...
[2024-11-24 01:34:12,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:34:12,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:34:12,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 01:34:12,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 01:34:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-24 01:34:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-24 01:34:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-24 01:34:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-24 01:34:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 01:34:12,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 01:34:12,647 INFO L234 CfgBuilder]: Building ICFG
[2024-11-24 01:34:12,650 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 01:34:12,814 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2024-11-24 01:34:12,814 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-24 01:34:12,827 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 01:34:12,828 INFO L312 CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-24 01:34:12,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:34:12 BoogieIcfgContainer
[2024-11-24 01:34:12,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 01:34:12,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 01:34:12,832 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 01:34:12,839 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-24 01:34:12,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:34:11" (1/3) ...
[2024-11-24 01:34:12,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b92533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:34:12, skipping insertion in model container
[2024-11-24 01:34:12,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:12" (2/3) ...
[2024-11-24 01:34:12,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b92533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:34:12, skipping insertion in model container
[2024-11-24 01:34:12,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:34:12" (3/3) ...
[2024-11-24 01:34:12,843 INFO L128 eAbstractionObserver]: Analyzing ICFG cstrlen_diffterm_alloca.i
[2024-11-24 01:34:12,865 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 01:34:12,867 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cstrlen_diffterm_alloca.i that has 1 procedures, 16 locations, 1 initial locations, 1 loop locations, and 2 error locations.
[2024-11-24 01:34:12,937 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 01:34:12,954 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;@66488108, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 01:34:12,954 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-11-24 01:34:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 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)
[2024-11-24 01:34:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-24 01:34:12,966 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:34:12,967 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-24 01:34:12,968 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2024-11-24 01:34:12,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:34:12,975 INFO L85 PathProgramCache]: Analyzing trace with hash 28693827, now seen corresponding path program 1 times
[2024-11-24 01:34:12,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:34:12,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396871148]
[2024-11-24 01:34:12,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:34:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:34:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:34:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:34:13,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:34:13,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396871148]
[2024-11-24 01:34:13,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396871148] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:34:13,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:34:13,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 01:34:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879260530]
[2024-11-24 01:34:13,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:34:13,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 01:34:13,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:34:13,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 01:34:13,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 01:34:13,256 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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)
[2024-11-24 01:34:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:34:13,314 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions.
[2024-11-24 01:34:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 01:34:13,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2024-11-24 01:34:13,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:34:13,331 INFO L225 Difference]: With dead ends: 21
[2024-11-24 01:34:13,331 INFO L226 Difference]: Without dead ends: 7
[2024-11-24 01:34:13,334 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
[2024-11-24 01:34:13,338 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-24 01:34:13,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-24 01:34:13,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states.
[2024-11-24 01:34:13,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7.
[2024-11-24 01:34:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:34:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions.
[2024-11-24 01:34:13,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5
[2024-11-24 01:34:13,384 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:34:13,385 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions.
[2024-11-24 01:34:13,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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)
[2024-11-24 01:34:13,385 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions.
[2024-11-24 01:34:13,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-24 01:34:13,386 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:34:13,386 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-24 01:34:13,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-24 01:34:13,387 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2024-11-24 01:34:13,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:34:13,387 INFO L85 PathProgramCache]: Analyzing trace with hash 889508680, now seen corresponding path program 1 times
[2024-11-24 01:34:13,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:34:13,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751093938]
[2024-11-24 01:34:13,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:34:13,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:34:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:34:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:34:13,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:34:13,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751093938]
[2024-11-24 01:34:13,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751093938] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:34:13,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:34:13,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 01:34:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592630807]
[2024-11-24 01:34:13,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:34:13,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 01:34:13,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:34:13,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 01:34:13,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 01:34:13,474 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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)
[2024-11-24 01:34:13,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:34:13,505 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions.
[2024-11-24 01:34:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 01:34:13,506 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-11-24 01:34:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:34:13,506 INFO L225 Difference]: With dead ends: 11
[2024-11-24 01:34:13,506 INFO L226 Difference]: Without dead ends: 7
[2024-11-24 01:34:13,506 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
[2024-11-24 01:34:13,507 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-24 01:34:13,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-24 01:34:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states.
[2024-11-24 01:34:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7.
[2024-11-24 01:34:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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)
[2024-11-24 01:34:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions.
[2024-11-24 01:34:13,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6
[2024-11-24 01:34:13,512 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:34:13,512 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions.
[2024-11-24 01:34:13,513 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), 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)
[2024-11-24 01:34:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions.
[2024-11-24 01:34:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-24 01:34:13,516 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:34:13,516 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-24 01:34:13,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-24 01:34:13,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2024-11-24 01:34:13,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:34:13,517 INFO L85 PathProgramCache]: Analyzing trace with hash 889568262, now seen corresponding path program 1 times
[2024-11-24 01:34:13,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:34:13,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634222139]
[2024-11-24 01:34:13,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:34:13,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:34:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:34:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:34:13,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:34:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634222139]
[2024-11-24 01:34:13,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634222139] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:34:13,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:34:13,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 01:34:13,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379181949]
[2024-11-24 01:34:13,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:34:13,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 01:34:13,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:34:13,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 01:34:13,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 01:34:13,591 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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)
[2024-11-24 01:34:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:34:13,599 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions.
[2024-11-24 01:34:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 01:34:13,600 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-11-24 01:34:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:34:13,600 INFO L225 Difference]: With dead ends: 7
[2024-11-24 01:34:13,600 INFO L226 Difference]: Without dead ends: 0
[2024-11-24 01:34:13,600 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
[2024-11-24 01:34:13,601 INFO L435 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-24 01:34:13,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-24 01:34:13,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-24 01:34:13,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-24 01:34:13,603 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)
[2024-11-24 01:34:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-24 01:34:13,603 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6
[2024-11-24 01:34:13,603 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:34:13,603 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-24 01:34:13,604 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), 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)
[2024-11-24 01:34:13,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-24 01:34:13,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-24 01:34:13,612 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2024-11-24 01:34:13,612 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2024-11-24 01:34:13,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-24 01:34:13,617 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2024-11-24 01:34:13,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-11-24 01:34:13,634 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-24 01:34:13,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:34:13 BoogieIcfgContainer
[2024-11-24 01:34:13,651 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-24 01:34:13,652 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-24 01:34:13,653 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-24 01:34:13,653 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-24 01:34:13,654 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:34:12" (3/4) ...
[2024-11-24 01:34:13,661 INFO L146 WitnessPrinter]: Generating witness for correct program
[2024-11-24 01:34:13,675 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges
[2024-11-24 01:34:13,676 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-11-24 01:34:13,676 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2024-11-24 01:34:13,676 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-24 01:34:13,787 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/witness.graphml
[2024-11-24 01:34:13,788 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/witness.yml
[2024-11-24 01:34:13,788 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-24 01:34:13,790 INFO L158 Benchmark]: Toolchain (without parser) took 2012.55ms. Allocated memory is still 142.6MB. Free memory was 104.8MB in the beginning and 43.2MB in the end (delta: 61.6MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB.
[2024-11-24 01:34:13,790 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 167.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:34:13,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 557.73ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 86.7MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-24 01:34:13,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.25ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 85.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:34:13,792 INFO L158 Benchmark]: Boogie Preprocessor took 66.42ms. Allocated memory is still 142.6MB. Free memory was 85.3MB in the beginning and 83.9MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 01:34:13,793 INFO L158 Benchmark]: RCFGBuilder took 365.25ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 73.2MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 01:34:13,793 INFO L158 Benchmark]: TraceAbstraction took 819.16ms. Allocated memory is still 142.6MB. Free memory was 72.9MB in the beginning and 47.5MB in the end (delta: 25.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
[2024-11-24 01:34:13,793 INFO L158 Benchmark]: Witness Printer took 135.68ms. Allocated memory is still 142.6MB. Free memory was 47.5MB in the beginning and 43.2MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:34:13,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.63ms. Allocated memory is still 167.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 557.73ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 86.7MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 59.25ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 85.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 66.42ms. Allocated memory is still 142.6MB. Free memory was 85.3MB in the beginning and 83.9MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 365.25ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 73.2MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 819.16ms. Allocated memory is still 142.6MB. Free memory was 72.9MB in the beginning and 47.5MB in the end (delta: 25.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
* Witness Printer took 135.68ms. Allocated memory is still 142.6MB. Free memory was 47.5MB in the beginning and 43.2MB in the end (delta: 4.3MB). There was no memory consumed. 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: 377]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 377]: 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 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 19 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
2 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2024-11-24 01:34:13,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c560895a-e4d1-4617-a8c1-1927a21c25ab/bin/uautomizer-verify-LYvppIcaGC/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