./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c --full-output --architecture 64bit


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


Checking for overflows
Using default analysis
Version 4e77c044
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )

 --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41
.....................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-4e77c04
[2021-10-13 07:36:12,324 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-10-13 07:36:12,327 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-13 07:36:12,368 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-13 07:36:12,369 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-13 07:36:12,371 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-13 07:36:12,374 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-13 07:36:12,377 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-13 07:36:12,380 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-13 07:36:12,381 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-13 07:36:12,382 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-10-13 07:36:12,384 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-13 07:36:12,385 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-13 07:36:12,387 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-13 07:36:12,389 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-13 07:36:12,391 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-13 07:36:12,393 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-13 07:36:12,394 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-13 07:36:12,398 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-13 07:36:12,401 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-13 07:36:12,404 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-13 07:36:12,406 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-13 07:36:12,408 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-10-13 07:36:12,409 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-13 07:36:12,414 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-13 07:36:12,415 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-13 07:36:12,416 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-13 07:36:12,417 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-13 07:36:12,418 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-13 07:36:12,420 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-13 07:36:12,421 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-13 07:36:12,422 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-13 07:36:12,423 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-13 07:36:12,425 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-13 07:36:12,427 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-13 07:36:12,427 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-13 07:36:12,429 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-13 07:36:12,429 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-13 07:36:12,430 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-13 07:36:12,431 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-13 07:36:12,433 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-10-13 07:36:12,438 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf
[2021-10-13 07:36:12,491 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-13 07:36:12,492 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-13 07:36:12,494 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-10-13 07:36:12,494 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2021-10-13 07:36:12,495 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2021-10-13 07:36:12,495 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2021-10-13 07:36:12,495 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2021-10-13 07:36:12,495 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2021-10-13 07:36:12,496 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2021-10-13 07:36:12,496 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2021-10-13 07:36:12,497 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2021-10-13 07:36:12,498 INFO  L138        SettingsManager]:  * Interval Domain=false
[2021-10-13 07:36:12,499 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2021-10-13 07:36:12,499 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2021-10-13 07:36:12,499 INFO  L138        SettingsManager]:  * Simplification Technique=SIMPLIFY_QUICK
[2021-10-13 07:36:12,500 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-13 07:36:12,501 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2021-10-13 07:36:12,501 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-13 07:36:12,501 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-13 07:36:12,502 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-10-13 07:36:12,502 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-13 07:36:12,502 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-10-13 07:36:12,503 INFO  L138        SettingsManager]:  * Check absence of signed integer overflows=true
[2021-10-13 07:36:12,503 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-10-13 07:36:12,503 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-13 07:36:12,503 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-10-13 07:36:12,504 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-13 07:36:12,504 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-13 07:36:12,504 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-13 07:36:12,506 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-13 07:36:12,507 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-13 07:36:12,507 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-13 07:36:12,508 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2021-10-13 07:36:12,508 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-13 07:36:12,508 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-13 07:36:12,509 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-10-13 07:36:12,509 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2021-10-13 07:36:12,509 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
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 -> Taipan
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 -> 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41
[2021-10-13 07:36:12,830 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-13 07:36:12,855 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-13 07:36:12,858 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-13 07:36:12,860 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-10-13 07:36:12,861 INFO  L275        PluginConnector]: CDTParser initialized
[2021-10-13 07:36:12,862 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c
[2021-10-13 07:36:12,936 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/data/6a9300ce3/7c04e7c7cc134dcba76cf149a5d489f0/FLAGd59ec70e1
[2021-10-13 07:36:13,578 INFO  L306              CDTParser]: Found 1 translation units.
[2021-10-13 07:36:13,579 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c
[2021-10-13 07:36:13,591 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/data/6a9300ce3/7c04e7c7cc134dcba76cf149a5d489f0/FLAGd59ec70e1
[2021-10-13 07:36:13,943 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/data/6a9300ce3/7c04e7c7cc134dcba76cf149a5d489f0
[2021-10-13 07:36:13,946 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-13 07:36:13,953 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-13 07:36:13,957 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-13 07:36:13,958 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-13 07:36:13,962 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-13 07:36:13,963 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:13" (1/1) ...
[2021-10-13 07:36:13,967 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f71436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:13, skipping insertion in model container
[2021-10-13 07:36:13,968 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:13" (1/1) ...
[2021-10-13 07:36:13,976 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-10-13 07:36:13,991 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-10-13 07:36:14,140 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-13 07:36:14,145 INFO  L203         MainTranslator]: Completed pre-run
[2021-10-13 07:36:14,162 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-13 07:36:14,176 INFO  L208         MainTranslator]: Completed translation
[2021-10-13 07:36:14,177 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14 WrapperNode
[2021-10-13 07:36:14,178 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-13 07:36:14,179 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-13 07:36:14,179 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-13 07:36:14,179 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-13 07:36:14,188 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (1/1) ...
[2021-10-13 07:36:14,194 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (1/1) ...
[2021-10-13 07:36:14,215 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-13 07:36:14,216 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-13 07:36:14,217 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-13 07:36:14,217 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-13 07:36:14,227 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (1/1) ...
[2021-10-13 07:36:14,227 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (1/1) ...
[2021-10-13 07:36:14,228 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (1/1) ...
[2021-10-13 07:36:14,229 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (1/1) ...
[2021-10-13 07:36:14,231 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (1/1) ...
[2021-10-13 07:36:14,236 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (1/1) ...
[2021-10-13 07:36:14,237 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (1/1) ...
[2021-10-13 07:36:14,238 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-13 07:36:14,240 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-13 07:36:14,240 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-13 07:36:14,240 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-13 07:36:14,241 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (1/1) ...
[2021-10-13 07:36:14,250 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-13 07:36:14,267 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/z3
[2021-10-13 07:36:14,282 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-13 07:36:14,312 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-13 07:36:14,390 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-13 07:36:14,395 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-13 07:36:14,578 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-13 07:36:14,579 INFO  L299             CfgBuilder]: Removed 5 assume(true) statements.
[2021-10-13 07:36:14,582 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:14 BoogieIcfgContainer
[2021-10-13 07:36:14,582 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-13 07:36:14,584 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-13 07:36:14,585 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-13 07:36:14,595 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-13 07:36:14,602 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:36:13" (1/3) ...
[2021-10-13 07:36:14,603 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f82b592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:14, skipping insertion in model container
[2021-10-13 07:36:14,603 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:14" (2/3) ...
[2021-10-13 07:36:14,604 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f82b592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:14, skipping insertion in model container
[2021-10-13 07:36:14,604 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:14" (3/3) ...
[2021-10-13 07:36:14,606 INFO  L111   eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig1.c
[2021-10-13 07:36:14,616 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-13 07:36:14,617 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations.
[2021-10-13 07:36:14,672 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-13 07:36:14,680 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR
[2021-10-13 07:36:14,681 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2021-10-13 07:36:14,699 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 states have internal predecessors, (13), 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)
[2021-10-13 07:36:14,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2021-10-13 07:36:14,705 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-13 07:36:14,705 INFO  L512         BasicCegarLoop]: trace histogram [1, 1, 1, 1]
[2021-10-13 07:36:14,706 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2021-10-13 07:36:14,713 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-13 07:36:14,714 INFO  L82        PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times
[2021-10-13 07:36:14,725 INFO  L121   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-10-13 07:36:14,726 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512599364]
[2021-10-13 07:36:14,726 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 07:36:14,728 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-13 07:36:14,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-13 07:36:14,895 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-13 07:36:14,896 INFO  L139   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2021-10-13 07:36:14,896 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512599364]
[2021-10-13 07:36:14,897 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512599364] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-13 07:36:14,897 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-13 07:36:14,898 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2021-10-13 07:36:14,900 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326226455]
[2021-10-13 07:36:14,906 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-10-13 07:36:14,906 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-10-13 07:36:14,922 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-10-13 07:36:14,923 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-13 07:36:14,925 INFO  L87              Difference]: Start difference. First operand  has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 states have internal predecessors, (13), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2021-10-13 07:36:14,957 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-13 07:36:14,957 INFO  L93              Difference]: Finished difference Result 12 states and 13 transitions.
[2021-10-13 07:36:14,958 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-13 07:36:14,960 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4
[2021-10-13 07:36:14,960 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-13 07:36:14,969 INFO  L225             Difference]: With dead ends: 12
[2021-10-13 07:36:14,969 INFO  L226             Difference]: Without dead ends: 10
[2021-10-13 07:36:14,972 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-13 07:36:15,009 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2021-10-13 07:36:15,030 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10.
[2021-10-13 07:36:15,033 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-13 07:36:15,034 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions.
[2021-10-13 07:36:15,040 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4
[2021-10-13 07:36:15,040 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-13 07:36:15,043 INFO  L470      AbstractCegarLoop]: Abstraction has 10 states and 11 transitions.
[2021-10-13 07:36:15,044 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2021-10-13 07:36:15,044 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions.
[2021-10-13 07:36:15,044 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2021-10-13 07:36:15,045 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-13 07:36:15,045 INFO  L512         BasicCegarLoop]: trace histogram [1, 1, 1, 1]
[2021-10-13 07:36:15,045 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-13 07:36:15,046 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2021-10-13 07:36:15,060 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-13 07:36:15,060 INFO  L82        PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times
[2021-10-13 07:36:15,060 INFO  L121   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-10-13 07:36:15,061 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343677817]
[2021-10-13 07:36:15,074 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 07:36:15,075 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-13 07:36:15,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-13 07:36:15,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-13 07:36:15,106 INFO  L139   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2021-10-13 07:36:15,106 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343677817]
[2021-10-13 07:36:15,107 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343677817] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-13 07:36:15,107 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-13 07:36:15,107 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2021-10-13 07:36:15,107 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109915391]
[2021-10-13 07:36:15,109 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-10-13 07:36:15,110 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-10-13 07:36:15,111 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-10-13 07:36:15,112 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-13 07:36:15,112 INFO  L87              Difference]: Start difference. First operand 10 states and 11 transitions. Second operand  has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2021-10-13 07:36:15,126 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-13 07:36:15,126 INFO  L93              Difference]: Finished difference Result 10 states and 11 transitions.
[2021-10-13 07:36:15,127 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-13 07:36:15,127 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4
[2021-10-13 07:36:15,128 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-13 07:36:15,128 INFO  L225             Difference]: With dead ends: 10
[2021-10-13 07:36:15,128 INFO  L226             Difference]: Without dead ends: 9
[2021-10-13 07:36:15,129 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-13 07:36:15,130 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2021-10-13 07:36:15,132 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2021-10-13 07:36:15,132 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 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)
[2021-10-13 07:36:15,133 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions.
[2021-10-13 07:36:15,133 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4
[2021-10-13 07:36:15,133 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-13 07:36:15,134 INFO  L470      AbstractCegarLoop]: Abstraction has 9 states and 10 transitions.
[2021-10-13 07:36:15,134 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2021-10-13 07:36:15,134 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions.
[2021-10-13 07:36:15,135 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2021-10-13 07:36:15,135 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-13 07:36:15,135 INFO  L512         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2021-10-13 07:36:15,136 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-10-13 07:36:15,136 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2021-10-13 07:36:15,137 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-13 07:36:15,138 INFO  L82        PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times
[2021-10-13 07:36:15,138 INFO  L121   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-10-13 07:36:15,138 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749751015]
[2021-10-13 07:36:15,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 07:36:15,139 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-13 07:36:15,150 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-13 07:36:15,190 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-13 07:36:15,190 INFO  L139   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2021-10-13 07:36:15,191 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749751015]
[2021-10-13 07:36:15,191 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749751015] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-13 07:36:15,192 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-13 07:36:15,192 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-13 07:36:15,192 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805979293]
[2021-10-13 07:36:15,193 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-10-13 07:36:15,193 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-10-13 07:36:15,194 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-10-13 07:36:15,195 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-13 07:36:15,195 INFO  L87              Difference]: Start difference. First operand 9 states and 10 transitions. 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)
[2021-10-13 07:36:15,214 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-13 07:36:15,215 INFO  L93              Difference]: Finished difference Result 10 states and 11 transitions.
[2021-10-13 07:36:15,216 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-13 07:36:15,216 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
[2021-10-13 07:36:15,216 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-13 07:36:15,218 INFO  L225             Difference]: With dead ends: 10
[2021-10-13 07:36:15,218 INFO  L226             Difference]: Without dead ends: 9
[2021-10-13 07:36:15,219 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-13 07:36:15,220 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2021-10-13 07:36:15,222 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8.
[2021-10-13 07:36:15,226 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-13 07:36:15,226 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions.
[2021-10-13 07:36:15,227 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5
[2021-10-13 07:36:15,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-13 07:36:15,227 INFO  L470      AbstractCegarLoop]: Abstraction has 8 states and 9 transitions.
[2021-10-13 07:36:15,227 INFO  L471      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)
[2021-10-13 07:36:15,228 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions.
[2021-10-13 07:36:15,228 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2021-10-13 07:36:15,228 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-13 07:36:15,229 INFO  L512         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2021-10-13 07:36:15,229 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-10-13 07:36:15,230 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2021-10-13 07:36:15,231 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-13 07:36:15,233 INFO  L82        PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times
[2021-10-13 07:36:15,233 INFO  L121   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-10-13 07:36:15,234 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556466300]
[2021-10-13 07:36:15,235 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 07:36:15,236 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-13 07:36:15,253 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-13 07:36:15,314 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-13 07:36:15,315 INFO  L139   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2021-10-13 07:36:15,315 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556466300]
[2021-10-13 07:36:15,315 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556466300] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-13 07:36:15,316 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-13 07:36:15,316 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-13 07:36:15,316 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711604641]
[2021-10-13 07:36:15,317 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-10-13 07:36:15,317 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-10-13 07:36:15,319 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-10-13 07:36:15,319 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-13 07:36:15,320 INFO  L87              Difference]: Start difference. First operand 8 states and 9 transitions. 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)
[2021-10-13 07:36:15,342 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-13 07:36:15,342 INFO  L93              Difference]: Finished difference Result 8 states and 9 transitions.
[2021-10-13 07:36:15,343 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-13 07:36:15,343 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
[2021-10-13 07:36:15,343 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-13 07:36:15,344 INFO  L225             Difference]: With dead ends: 8
[2021-10-13 07:36:15,344 INFO  L226             Difference]: Without dead ends: 0
[2021-10-13 07:36:15,345 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-13 07:36:15,345 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-10-13 07:36:15,345 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-10-13 07:36:15,346 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)
[2021-10-13 07:36:15,346 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-10-13 07:36:15,346 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5
[2021-10-13 07:36:15,346 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-13 07:36:15,347 INFO  L470      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-10-13 07:36:15,347 INFO  L471      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)
[2021-10-13 07:36:15,347 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-10-13 07:36:15,347 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2021-10-13 07:36:15,351 INFO  L764   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW
[2021-10-13 07:36:15,352 INFO  L764   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW
[2021-10-13 07:36:15,357 INFO  L764   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW
[2021-10-13 07:36:15,358 INFO  L764   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW
[2021-10-13 07:36:15,358 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-10-13 07:36:15,364 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-10-13 07:36:15,383 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms
[2021-10-13 07:36:15,406 INFO  L857   garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed.
[2021-10-13 07:36:15,406 INFO  L857   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-10-13 07:36:15,407 INFO  L857   garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed.
[2021-10-13 07:36:15,407 INFO  L857   garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed.
[2021-10-13 07:36:15,407 INFO  L857   garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed.
[2021-10-13 07:36:15,407 INFO  L857   garLoopResultBuilder]: For program point L19(lines 19 24) no Hoare annotation was computed.
[2021-10-13 07:36:15,408 INFO  L853   garLoopResultBuilder]: At program point L19-2(lines 18 25) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 2147483647) (<= ULTIMATE.start_main_~x~0 2147483647))
[2021-10-13 07:36:15,408 INFO  L857   garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed.
[2021-10-13 07:36:15,408 INFO  L857   garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed.
[2021-10-13 07:36:15,408 INFO  L857   garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-10-13 07:36:15,409 INFO  L857   garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed.
[2021-10-13 07:36:15,409 INFO  L857   garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed.
[2021-10-13 07:36:15,413 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2021-10-13 07:36:15,429 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:36:15 BoogieIcfgContainer
[2021-10-13 07:36:15,433 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-13 07:36:15,435 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-13 07:36:15,435 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-10-13 07:36:15,435 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-10-13 07:36:15,439 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:14" (3/4) ...
[2021-10-13 07:36:15,443 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2021-10-13 07:36:15,456 INFO  L910   BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges
[2021-10-13 07:36:15,456 INFO  L910   BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2021-10-13 07:36:15,456 INFO  L910   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-13 07:36:15,497 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/witness.graphml
[2021-10-13 07:36:15,498 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-13 07:36:15,500 INFO  L168              Benchmark]: Toolchain (without parser) took 1546.28 ms. Allocated memory is still 86.0 MB. Free memory was 54.1 MB in the beginning and 48.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB.
[2021-10-13 07:36:15,501 INFO  L168              Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory is still 45.2 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-13 07:36:15,501 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 220.86 ms. Allocated memory is still 86.0 MB. Free memory was 53.9 MB in the beginning and 45.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB.
[2021-10-13 07:36:15,502 INFO  L168              Benchmark]: Boogie Procedure Inliner took 36.78 ms. Allocated memory is still 86.0 MB. Free memory was 45.4 MB in the beginning and 44.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-13 07:36:15,503 INFO  L168              Benchmark]: Boogie Preprocessor took 22.11 ms. Allocated memory is still 86.0 MB. Free memory was 44.0 MB in the beginning and 43.2 MB in the end (delta: 881.2 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
[2021-10-13 07:36:15,504 INFO  L168              Benchmark]: RCFGBuilder took 342.68 ms. Allocated memory is still 86.0 MB. Free memory was 43.2 MB in the beginning and 57.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
[2021-10-13 07:36:15,505 INFO  L168              Benchmark]: TraceAbstraction took 849.39 ms. Allocated memory is still 86.0 MB. Free memory was 57.1 MB in the beginning and 51.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB.
[2021-10-13 07:36:15,506 INFO  L168              Benchmark]: Witness Printer took 63.27 ms. Allocated memory is still 86.0 MB. Free memory was 51.0 MB in the beginning and 48.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-13 07:36:15,510 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory is still 45.2 MB. There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 220.86 ms. Allocated memory is still 86.0 MB. Free memory was 53.9 MB in the beginning and 45.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB.
 * Boogie Procedure Inliner took 36.78 ms. Allocated memory is still 86.0 MB. Free memory was 45.4 MB in the beginning and 44.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 22.11 ms. Allocated memory is still 86.0 MB. Free memory was 44.0 MB in the beginning and 43.2 MB in the end (delta: 881.2 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
 * RCFGBuilder took 342.68 ms. Allocated memory is still 86.0 MB. Free memory was 43.2 MB in the beginning and 57.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
 * TraceAbstraction took 849.39 ms. Allocated memory is still 86.0 MB. Free memory was 57.1 MB in the beginning and 51.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB.
 * Witness Printer took 63.27 ms. Allocated memory is still 86.0 MB. Free memory was 51.0 MB in the beginning and 48.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Line: 20]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 20]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 23]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 23]: 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, 12 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 743.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 13.4ms, AutomataDifference: 137.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 46.3ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 17 SDslu, 2 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 40.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 9.4ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 11.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 10.2ms SsaConstructionTime, 51.0ms SatisfiabilityAnalysisTime, 174.3ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    4 specifications checked. All of them hold
  - InvariantResult [Line: 18]: Loop Invariant
    Derived loop invariant: y <= 2147483647 && x <= 2147483647
RESULT: Ultimate proved your program to be correct!
[2021-10-13 07:36:15,559 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78efa862-18d9-479d-9c6a-ca8279e46721/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...