./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c --full-output --architecture 32bit


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


Checking for termination
Using default analysis
Version a4ecdabc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85d8c0857ba90e2936a809e6bce9dcb97e8e7e59
...............................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE(TERM)
--- Real Ultimate output ---
This is Ultimate 0.2.0-a4ecdab
[2020-11-29 19:55:24,968 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-11-29 19:55:25,003 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-11-29 19:55:25,047 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-11-29 19:55:25,048 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-11-29 19:55:25,049 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-11-29 19:55:25,052 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-11-29 19:55:25,054 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-11-29 19:55:25,057 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-11-29 19:55:25,058 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-11-29 19:55:25,060 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-11-29 19:55:25,062 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-11-29 19:55:25,063 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-11-29 19:55:25,064 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-11-29 19:55:25,066 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-11-29 19:55:25,068 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-11-29 19:55:25,069 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-29 19:55:25,071 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-29 19:55:25,073 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-29 19:55:25,076 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-29 19:55:25,079 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-11-29 19:55:25,081 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-11-29 19:55:25,083 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-11-29 19:55:25,085 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-11-29 19:55:25,089 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-11-29 19:55:25,089 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-11-29 19:55:25,090 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-11-29 19:55:25,091 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-11-29 19:55:25,092 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-11-29 19:55:25,094 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-11-29 19:55:25,094 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-11-29 19:55:25,096 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-11-29 19:55:25,097 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-11-29 19:55:25,099 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-11-29 19:55:25,100 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-11-29 19:55:25,101 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-11-29 19:55:25,102 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-11-29 19:55:25,103 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-11-29 19:55:25,103 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-11-29 19:55:25,105 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-11-29 19:55:25,106 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-11-29 19:55:25,110 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf
[2020-11-29 19:55:25,136 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-11-29 19:55:25,137 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-29 19:55:25,138 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-11-29 19:55:25,139 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-11-29 19:55:25,139 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-11-29 19:55:25,139 INFO  L136        SettingsManager]: Preferences of BuchiAutomizer differ from their defaults:
[2020-11-29 19:55:25,140 INFO  L138        SettingsManager]:  * NCSB implementation=INTSET_LAZY3
[2020-11-29 19:55:25,140 INFO  L138        SettingsManager]:  * Use old map elimination=false
[2020-11-29 19:55:25,140 INFO  L138        SettingsManager]:  * Use external solver (rank synthesis)=false
[2020-11-29 19:55:25,140 INFO  L138        SettingsManager]:  * Use only trivial implications for array writes=true
[2020-11-29 19:55:25,141 INFO  L138        SettingsManager]:  * Rank analysis=LINEAR_WITH_GUESSES
[2020-11-29 19:55:25,141 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-29 19:55:25,141 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-11-29 19:55:25,141 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2020-11-29 19:55:25,142 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-11-29 19:55:25,142 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-11-29 19:55:25,142 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-11-29 19:55:25,142 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=ASSUME
[2020-11-29 19:55:25,143 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=ASSUME
[2020-11-29 19:55:25,143 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=ASSUME
[2020-11-29 19:55:25,143 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-11-29 19:55:25,144 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-11-29 19:55:25,144 INFO  L138        SettingsManager]:  * Assume nondeterminstic values are in range=false
[2020-11-29 19:55:25,144 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-11-29 19:55:25,144 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=ASSUME
[2020-11-29 19:55:25,145 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-29 19:55:25,145 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-11-29 19:55:25,145 INFO  L138        SettingsManager]:  * To the following directory=/home/matthias/ultimate/dump
[2020-11-29 19:55:25,146 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-29 19:55:25,146 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-11-29 19:55:25,146 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-11-29 19:55:25,146 INFO  L138        SettingsManager]:  * Dump automata to the following directory=/home/matthias/ultimate/dump/auto
[2020-11-29 19:55:25,148 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2020-11-29 19:55:25,148 INFO  L138        SettingsManager]:  * TransformationType=MODULO_NEIGHBOR
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-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/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-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer
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(F end) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85d8c0857ba90e2936a809e6bce9dcb97e8e7e59
[2020-11-29 19:55:25,430 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-29 19:55:25,459 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-29 19:55:25,462 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-29 19:55:25,464 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-11-29 19:55:25,465 INFO  L275        PluginConnector]: CDTParser initialized
[2020-11-29 19:55:25,467 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/../../sv-benchmarks/c/loop-acceleration/phases_2-2.c
[2020-11-29 19:55:25,564 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/data/9c13c3e10/9ffb04b3dea141f78270172d4eb6223b/FLAGad5b13ab7
[2020-11-29 19:55:26,084 INFO  L306              CDTParser]: Found 1 translation units.
[2020-11-29 19:55:26,084 INFO  L160              CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/sv-benchmarks/c/loop-acceleration/phases_2-2.c
[2020-11-29 19:55:26,092 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/data/9c13c3e10/9ffb04b3dea141f78270172d4eb6223b/FLAGad5b13ab7
[2020-11-29 19:55:26,460 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/data/9c13c3e10/9ffb04b3dea141f78270172d4eb6223b
[2020-11-29 19:55:26,463 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-29 19:55:26,464 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2020-11-29 19:55:26,466 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-29 19:55:26,466 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-29 19:55:26,470 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-29 19:55:26,470 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,472 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23cf9211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26, skipping insertion in model container
[2020-11-29 19:55:26,473 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,481 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-11-29 19:55:26,495 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-11-29 19:55:26,683 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-11-29 19:55:26,693 INFO  L203         MainTranslator]: Completed pre-run
[2020-11-29 19:55:26,712 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-11-29 19:55:26,730 INFO  L208         MainTranslator]: Completed translation
[2020-11-29 19:55:26,731 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26 WrapperNode
[2020-11-29 19:55:26,731 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-29 19:55:26,733 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-11-29 19:55:26,733 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-11-29 19:55:26,734 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2020-11-29 19:55:26,744 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,752 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,773 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-11-29 19:55:26,774 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-29 19:55:26,775 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-29 19:55:26,775 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-11-29 19:55:26,784 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,785 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,787 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,787 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,791 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,795 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,797 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ...
[2020-11-29 19:55:26,799 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-29 19:55:26,800 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-29 19:55:26,801 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-11-29 19:55:26,801 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-11-29 19:55:26,802 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ...
No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2020-11-29 19:55:26,879 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-29 19:55:26,880 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-29 19:55:26,880 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-29 19:55:26,881 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-29 19:55:27,135 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-29 19:55:27,135 INFO  L298             CfgBuilder]: Removed 9 assume(true) statements.
[2020-11-29 19:55:27,137 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:27 BoogieIcfgContainer
[2020-11-29 19:55:27,138 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-29 19:55:27,149 INFO  L113        PluginConnector]: ------------------------BuchiAutomizer----------------------------
[2020-11-29 19:55:27,150 INFO  L271        PluginConnector]: Initializing BuchiAutomizer...
[2020-11-29 19:55:27,163 INFO  L275        PluginConnector]: BuchiAutomizer initialized
[2020-11-29 19:55:27,165 INFO  L99          BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2020-11-29 19:55:27,165 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:55:26" (1/3) ...
[2020-11-29 19:55:27,179 INFO  L205        PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ace8190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:55:27, skipping insertion in model container
[2020-11-29 19:55:27,179 INFO  L99          BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2020-11-29 19:55:27,179 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (2/3) ...
[2020-11-29 19:55:27,180 INFO  L205        PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ace8190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:55:27, skipping insertion in model container
[2020-11-29 19:55:27,180 INFO  L99          BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2020-11-29 19:55:27,180 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:27" (3/3) ...
[2020-11-29 19:55:27,182 INFO  L373   chiAutomizerObserver]: Analyzing ICFG phases_2-2.c
[2020-11-29 19:55:27,269 INFO  L359         BuchiCegarLoop]: Interprodecural is true
[2020-11-29 19:55:27,269 INFO  L360         BuchiCegarLoop]: Hoare is false
[2020-11-29 19:55:27,269 INFO  L361         BuchiCegarLoop]: Compute interpolants for ForwardPredicates
[2020-11-29 19:55:27,270 INFO  L362         BuchiCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-29 19:55:27,270 INFO  L363         BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-29 19:55:27,270 INFO  L364         BuchiCegarLoop]: Difference is false
[2020-11-29 19:55:27,270 INFO  L365         BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-29 19:55:27,270 INFO  L368         BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop========
[2020-11-29 19:55:27,298 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states.
[2020-11-29 19:55:27,327 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 2
[2020-11-29 19:55:27,327 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2020-11-29 19:55:27,328 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2020-11-29 19:55:27,336 INFO  L852         BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1]
[2020-11-29 19:55:27,336 INFO  L853         BuchiCegarLoop]: Counterexample loop histogram [1, 1]
[2020-11-29 19:55:27,336 INFO  L427         BuchiCegarLoop]: ======== Iteration 1============
[2020-11-29 19:55:27,336 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states.
[2020-11-29 19:55:27,340 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 2
[2020-11-29 19:55:27,340 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2020-11-29 19:55:27,340 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2020-11-29 19:55:27,341 INFO  L852         BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1]
[2020-11-29 19:55:27,341 INFO  L853         BuchiCegarLoop]: Counterexample loop histogram [1, 1]
[2020-11-29 19:55:27,350 INFO  L794   eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(13);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~post8, main_~x~0, main_~y~0;main_~x~0 := 1;main_~y~0 := main_#t~nondet7;havoc main_#t~nondet7; 4#L21true assume !!(main_~y~0 % 4294967296 > 0); 8#L24-2true 
[2020-11-29 19:55:27,351 INFO  L796   eck$LassoCheckResult]: Loop: 8#L24-2true assume !!(main_~x~0 % 4294967296 < main_~y~0 % 4294967296); 11#L24true assume main_~x~0 % 4294967296 < (if main_~y~0 % 4294967296 < 0 && 0 != main_~y~0 % 4294967296 % (main_~x~0 % 4294967296) then (if main_~x~0 % 4294967296 < 0 then main_~y~0 % 4294967296 / (main_~x~0 % 4294967296) - 1 else 1 + main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) else main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) % 4294967296;main_~x~0 := main_~x~0 * main_~x~0; 8#L24-2true 
[2020-11-29 19:55:27,367 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-29 19:55:27,367 INFO  L82        PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times
[2020-11-29 19:55:27,382 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-29 19:55:27,383 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487331999]
[2020-11-29 19:55:27,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-29 19:55:27,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-29 19:55:27,537 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-29 19:55:27,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-29 19:55:27,591 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-29 19:55:27,629 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-11-29 19:55:27,635 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-29 19:55:27,636 INFO  L82        PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times
[2020-11-29 19:55:27,637 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-29 19:55:27,639 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56028181]
[2020-11-29 19:55:27,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-29 19:55:27,651 ERROR L270   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2020-11-29 19:55:27,653 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543686008]
[2020-11-29 19:55:27,653 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-29 19:55:27,720 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-29 19:55:27,720 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-29 19:55:27,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-29 19:55:27,734 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-29 19:55:27,748 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-11-29 19:55:27,753 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-29 19:55:27,754 INFO  L82        PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times
[2020-11-29 19:55:27,754 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-29 19:55:27,755 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473648419]
[2020-11-29 19:55:27,755 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-29 19:55:27,778 ERROR L270   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2020-11-29 19:55:27,779 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6572771]
[2020-11-29 19:55:27,779 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-29 19:55:27,888 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-29 19:55:27,888 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-29 19:55:27,903 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-29 19:55:27,903 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-29 19:55:27,944 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-11-29 19:55:28,398 WARN  L193               SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59
[2020-11-29 19:55:28,567 WARN  L193               SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 57
[2020-11-29 19:55:28,600 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:55:28 BoogieIcfgContainer
[2020-11-29 19:55:28,601 INFO  L132        PluginConnector]: ------------------------ END BuchiAutomizer----------------------------
[2020-11-29 19:55:28,602 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2020-11-29 19:55:28,602 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2020-11-29 19:55:28,603 INFO  L275        PluginConnector]: Witness Printer initialized
[2020-11-29 19:55:28,603 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:27" (3/4) ...
[2020-11-29 19:55:28,607 INFO  L134         WitnessPrinter]: Generating witness for non-termination counterexample
[2020-11-29 19:55:28,643 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f76e2f27-93e1-4e63-a5aa-11277a5bd5f5/bin/uautomizer/witness.graphml
[2020-11-29 19:55:28,643 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2020-11-29 19:55:28,645 INFO  L168              Benchmark]: Toolchain (without parser) took 2180.02 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 90.1 MB in the beginning and 105.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB.
[2020-11-29 19:55:28,646 INFO  L168              Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 117.4 MB. Free memory was 74.5 MB in the beginning and 74.4 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2020-11-29 19:55:28,647 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 266.00 ms. Allocated memory is still 117.4 MB. Free memory was 89.8 MB in the beginning and 94.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2020-11-29 19:55:28,648 INFO  L168              Benchmark]: Boogie Procedure Inliner took 40.62 ms. Allocated memory is still 117.4 MB. Free memory was 94.1 MB in the beginning and 92.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2020-11-29 19:55:28,649 INFO  L168              Benchmark]: Boogie Preprocessor took 25.09 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 91.7 MB in the end (delta: 974.4 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2020-11-29 19:55:28,650 INFO  L168              Benchmark]: RCFGBuilder took 337.61 ms. Allocated memory is still 117.4 MB. Free memory was 91.7 MB in the beginning and 80.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2020-11-29 19:55:28,651 INFO  L168              Benchmark]: BuchiAutomizer took 1451.81 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 80.4 MB in the beginning and 107.4 MB in the end (delta: -27.0 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB.
[2020-11-29 19:55:28,652 INFO  L168              Benchmark]: Witness Printer took 41.39 ms. Allocated memory is still 161.5 MB. Free memory was 107.4 MB in the beginning and 105.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2020-11-29 19:55:28,658 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.34 ms. Allocated memory is still 117.4 MB. Free memory was 74.5 MB in the beginning and 74.4 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 266.00 ms. Allocated memory is still 117.4 MB. Free memory was 89.8 MB in the beginning and 94.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
 * Boogie Procedure Inliner took 40.62 ms. Allocated memory is still 117.4 MB. Free memory was 94.1 MB in the beginning and 92.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 25.09 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 91.7 MB in the end (delta: 974.4 kB). There was no memory consumed. Max. memory is 16.1 GB.
 * RCFGBuilder took 337.61 ms. Allocated memory is still 117.4 MB. Free memory was 91.7 MB in the beginning and 80.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
 * BuchiAutomizer took 1451.81 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 80.4 MB in the beginning and 107.4 MB in the end (delta: -27.0 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB.
 * Witness Printer took 41.39 ms. Allocated memory is still 161.5 MB. Free memory was 107.4 MB in the beginning and 105.4 MB in the end (delta: 2.0 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: Constructed decomposition of program
    Trivial decomposition into one nonterminating module.
  - StatisticsResult: Timing statistics
    BüchiAutomizer plugin needed 1.3s and 1 iterations.  TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1.	Nontrivial modules had stage [0, 0, 0, 0, 0].	InterpolantCoveringCapabilityFinite: 0/0	InterpolantCoveringCapabilityBuchi: 0/0	HoareTripleCheckerStatistics: No data available	LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0	LassoNonterminationAnalysisSatUnbounded: 0	LassoNonterminationAnalysisUnsat: 0	LassoNonterminationAnalysisUnknown: 0	LassoNonterminationAnalysisTime: 0.0s	
  - TerminationAnalysisResult: Nontermination possible
    Buchi Automizer proved that your program is nonterminating for some inputs
  - FixpointNonTerminationResult [Line: 23]: Nontermination argument in form of an infinite program execution.
    Nontermination argument in form of an infinite execution
State at position 0 is
{NULL=1}
State at position 1 is
{NULL=0, NULL=0, NULL=0, NULL=3, NULL=0, \result=0, NULL=4, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@caadbc5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@4b2d0fc0=0, NULL=0, x=1, y=4294967298, NULL=5}
  - StatisticsResult: NonterminationArgumentStatistics
    Fixpoint
  - NonterminatingLassoResult [Line: 23]: Nonterminating execution
    Found a nonterminating execution for the following lasso shaped sequence of statements.
Stem:
[L18]              unsigned int x = 1;
[L19]              unsigned int y = __VERIFIER_nondet_uint();
[L21]  COND FALSE  !(!(y > 0))
Loop:
[L23]  COND TRUE  x < y
[L24]  COND TRUE  x < y / x
[L25]             x *= x
End of lasso representation.
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...