./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version e943c265
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6568b5930df9b96ff5e807ba48758caa6128d98ba24e8c1d6b9a86c6290462f1
...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-e943c26
[2021-10-21 20:23:42,601 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-10-21 20:23:42,604 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-21 20:23:42,647 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-21 20:23:42,648 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-21 20:23:42,649 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-21 20:23:42,651 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-21 20:23:42,654 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-21 20:23:42,657 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-21 20:23:42,658 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-21 20:23:42,659 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-10-21 20:23:42,661 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-21 20:23:42,662 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-21 20:23:42,663 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-21 20:23:42,665 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-21 20:23:42,666 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-21 20:23:42,668 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-21 20:23:42,669 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-21 20:23:42,671 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-21 20:23:42,674 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-21 20:23:42,676 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-21 20:23:42,678 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-21 20:23:42,679 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-10-21 20:23:42,680 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-21 20:23:42,684 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-21 20:23:42,685 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-21 20:23:42,685 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-21 20:23:42,686 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-21 20:23:42,687 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-21 20:23:42,689 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-21 20:23:42,692 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-21 20:23:42,694 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-21 20:23:42,695 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-21 20:23:42,697 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-21 20:23:42,699 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-21 20:23:42,700 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-21 20:23:42,700 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-21 20:23:42,701 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-21 20:23:42,701 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-21 20:23:42,702 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-21 20:23:42,703 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-10-21 20:23:42,704 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-21 20:23:42,744 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-21 20:23:42,748 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-21 20:23:42,749 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-21 20:23:42,749 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-21 20:23:42,757 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-21 20:23:42,757 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-10-21 20:23:42,757 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-10-21 20:23:42,758 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-21 20:23:42,758 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-10-21 20:23:42,758 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-21 20:23:42,759 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-10-21 20:23:42,759 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-21 20:23:42,760 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-10-21 20:23:42,760 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-21 20:23:42,760 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-10-21 20:23:42,760 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-10-21 20:23:42,761 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-10-21 20:23:42,761 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-21 20:23:42,761 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-10-21 20:23:42,761 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-21 20:23:42,762 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-10-21 20:23:42,762 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-21 20:23:42,762 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-21 20:23:42,762 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-21 20:23:42,763 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-21 20:23:42,763 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-21 20:23:42,763 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-10-21 20:23:42,763 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-21 20:23:42,764 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-10-21 20:23:42,766 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-10-21 20:23:42,766 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-21 20:23:42,766 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-10-21 20:23:42,767 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/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_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be
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 ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6568b5930df9b96ff5e807ba48758caa6128d98ba24e8c1d6b9a86c6290462f1
[2021-10-21 20:23:43,048 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-21 20:23:43,079 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-21 20:23:43,083 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-21 20:23:43,084 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-10-21 20:23:43,085 INFO  L275        PluginConnector]: CDTParser initialized
[2021-10-21 20:23:43,086 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c
[2021-10-21 20:23:43,180 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/data/a54255a54/a646b9940e2245838e7fbb6299506a61/FLAGcd590b5a4
[2021-10-21 20:23:43,670 INFO  L306              CDTParser]: Found 1 translation units.
[2021-10-21 20:23:43,681 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c
[2021-10-21 20:23:43,701 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/data/a54255a54/a646b9940e2245838e7fbb6299506a61/FLAGcd590b5a4
[2021-10-21 20:23:44,038 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/data/a54255a54/a646b9940e2245838e7fbb6299506a61
[2021-10-21 20:23:44,041 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-21 20:23:44,042 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-21 20:23:44,044 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-21 20:23:44,044 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-21 20:23:44,048 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-21 20:23:44,049 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,050 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a937bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44, skipping insertion in model container
[2021-10-21 20:23:44,050 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,061 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-10-21 20:23:44,076 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-10-21 20:23:44,251 WARN  L228   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c[524,537]
[2021-10-21 20:23:44,265 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-21 20:23:44,272 INFO  L203         MainTranslator]: Completed pre-run
[2021-10-21 20:23:44,283 WARN  L228   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c[524,537]
[2021-10-21 20:23:44,290 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-21 20:23:44,303 INFO  L208         MainTranslator]: Completed translation
[2021-10-21 20:23:44,303 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44 WrapperNode
[2021-10-21 20:23:44,304 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-21 20:23:44,305 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-21 20:23:44,305 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-21 20:23:44,305 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-21 20:23:44,313 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,320 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,340 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-21 20:23:44,341 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-21 20:23:44,341 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-21 20:23:44,342 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-21 20:23:44,349 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,350 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,351 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,351 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,356 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,360 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,361 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,363 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-21 20:23:44,364 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-21 20:23:44,364 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-21 20:23:44,364 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-21 20:23:44,365 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (1/1) ...
[2021-10-21 20:23:44,380 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-21 20:23:44,392 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3
[2021-10-21 20:23:44,404 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-21 20:23:44,408 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-21 20:23:44,441 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-21 20:23:44,441 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-21 20:23:44,441 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-21 20:23:44,442 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-21 20:23:44,636 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-21 20:23:44,636 INFO  L299             CfgBuilder]: Removed 13 assume(true) statements.
[2021-10-21 20:23:44,638 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:44 BoogieIcfgContainer
[2021-10-21 20:23:44,638 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-21 20:23:44,640 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-21 20:23:44,640 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-21 20:23:44,658 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-21 20:23:44,658 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:23:44" (1/3) ...
[2021-10-21 20:23:44,659 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d9701c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:23:44, skipping insertion in model container
[2021-10-21 20:23:44,659 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:44" (2/3) ...
[2021-10-21 20:23:44,659 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d9701c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:23:44, skipping insertion in model container
[2021-10-21 20:23:44,659 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:44" (3/3) ...
[2021-10-21 20:23:44,660 INFO  L111   eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound1.c
[2021-10-21 20:23:44,666 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-21 20:23:44,666 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2021-10-21 20:23:44,717 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-21 20:23:44,725 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, mAutomataTypeConcurrency=PETRI_NET, 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
[2021-10-21 20:23:44,725 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2021-10-21 20:23:44,740 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-21 20:23:44,745 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-10-21 20:23:44,745 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-21 20:23:44,746 INFO  L512         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-21 20:23:44,747 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-21 20:23:44,752 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-21 20:23:44,753 INFO  L82        PathProgramCache]: Analyzing trace with hash -1235340721, now seen corresponding path program 1 times
[2021-10-21 20:23:44,762 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-21 20:23:44,763 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579206016]
[2021-10-21 20:23:44,763 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-21 20:23:44,764 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-21 20:23:44,856 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-21 20:23:44,856 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714194195]
[2021-10-21 20:23:44,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-21 20:23:44,857 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-21 20:23:44,857 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3
[2021-10-21 20:23:44,859 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-21 20:23:44,884 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-10-21 20:23:44,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-21 20:23:44,931 INFO  L263         TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core
[2021-10-21 20:23:44,936 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-21 20:23:44,995 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-21 20:23:44,995 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-21 20:23:44,995 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579206016]
[2021-10-21 20:23:44,996 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-21 20:23:44,996 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714194195]
[2021-10-21 20:23:44,997 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [714194195] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-21 20:23:44,997 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-21 20:23:44,997 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-21 20:23:44,999 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668077036]
[2021-10-21 20:23:45,004 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-10-21 20:23:45,004 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-21 20:23:45,031 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-10-21 20:23:45,032 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-21 20:23:45,034 INFO  L87              Difference]: Start difference. First operand  has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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)
[2021-10-21 20:23:45,065 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-21 20:23:45,066 INFO  L93              Difference]: Finished difference Result 39 states and 52 transitions.
[2021-10-21 20:23:45,066 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-21 20:23:45,068 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10
[2021-10-21 20:23:45,069 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-21 20:23:45,077 INFO  L225             Difference]: With dead ends: 39
[2021-10-21 20:23:45,078 INFO  L226             Difference]: Without dead ends: 17
[2021-10-21 20:23:45,081 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-21 20:23:45,098 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2021-10-21 20:23:45,111 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2021-10-21 20:23:45,113 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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)
[2021-10-21 20:23:45,114 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions.
[2021-10-21 20:23:45,116 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10
[2021-10-21 20:23:45,116 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-21 20:23:45,117 INFO  L470      AbstractCegarLoop]: Abstraction has 17 states and 19 transitions.
[2021-10-21 20:23:45,117 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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)
[2021-10-21 20:23:45,118 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions.
[2021-10-21 20:23:45,119 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-10-21 20:23:45,120 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-21 20:23:45,120 INFO  L512         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-21 20:23:45,153 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2021-10-21 20:23:45,333 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2021-10-21 20:23:45,333 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-21 20:23:45,334 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-21 20:23:45,334 INFO  L82        PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times
[2021-10-21 20:23:45,335 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-21 20:23:45,335 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050869788]
[2021-10-21 20:23:45,335 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-21 20:23:45,336 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-21 20:23:45,354 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-21 20:23:45,355 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743070123]
[2021-10-21 20:23:45,355 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-21 20:23:45,355 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-21 20:23:45,356 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3
[2021-10-21 20:23:45,374 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-21 20:23:45,411 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-21 20:23:45,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-21 20:23:45,513 INFO  L263         TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core
[2021-10-21 20:23:45,522 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-21 20:23:45,768 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-21 20:23:45,768 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-21 20:23:45,768 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050869788]
[2021-10-21 20:23:45,769 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-21 20:23:45,769 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743070123]
[2021-10-21 20:23:45,769 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [743070123] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-21 20:23:45,769 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-21 20:23:45,770 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-10-21 20:23:45,770 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131324086]
[2021-10-21 20:23:45,771 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-21 20:23:45,771 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-21 20:23:45,773 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-21 20:23:45,773 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-21 20:23:45,773 INFO  L87              Difference]: Start difference. First operand 17 states and 19 transitions. Second operand  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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)
[2021-10-21 20:23:53,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-21 20:23:53,401 INFO  L93              Difference]: Finished difference Result 32 states and 37 transitions.
[2021-10-21 20:23:53,402 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-10-21 20:23:53,402 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Word has length 10
[2021-10-21 20:23:53,403 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-21 20:23:53,403 INFO  L225             Difference]: With dead ends: 32
[2021-10-21 20:23:53,403 INFO  L226             Difference]: Without dead ends: 30
[2021-10-21 20:23:53,404 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-10-21 20:23:53,405 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2021-10-21 20:23:53,408 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20.
[2021-10-21 20:23:53,409 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-21 20:23:53,410 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions.
[2021-10-21 20:23:53,410 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10
[2021-10-21 20:23:53,410 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-21 20:23:53,410 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 23 transitions.
[2021-10-21 20:23:53,411 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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)
[2021-10-21 20:23:53,411 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions.
[2021-10-21 20:23:53,411 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-21 20:23:53,411 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-21 20:23:53,412 INFO  L512         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-21 20:23:53,432 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-21 20:23:53,622 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-21 20:23:53,623 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-21 20:23:53,624 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-21 20:23:53,624 INFO  L82        PathProgramCache]: Analyzing trace with hash -1507424085, now seen corresponding path program 1 times
[2021-10-21 20:23:53,624 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-21 20:23:53,625 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496702760]
[2021-10-21 20:23:53,625 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-21 20:23:53,626 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-21 20:23:53,638 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-21 20:23:53,645 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067854998]
[2021-10-21 20:23:53,645 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-21 20:23:53,646 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-21 20:23:53,646 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3
[2021-10-21 20:23:53,647 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-21 20:23:53,657 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-10-21 20:23:53,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-21 20:23:53,740 INFO  L263         TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-10-21 20:23:53,741 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-21 20:23:53,808 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-21 20:23:53,809 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-21 20:23:53,810 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496702760]
[2021-10-21 20:23:53,810 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-21 20:23:53,810 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067854998]
[2021-10-21 20:23:53,814 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067854998] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-21 20:23:53,814 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-21 20:23:53,814 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-10-21 20:23:53,815 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510591488]
[2021-10-21 20:23:53,815 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-21 20:23:53,815 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-21 20:23:53,816 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-21 20:23:53,821 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-21 20:23:53,822 INFO  L87              Difference]: Start difference. First operand 20 states and 23 transitions. Second operand  has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-21 20:23:53,838 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-21 20:23:53,839 INFO  L93              Difference]: Finished difference Result 24 states and 26 transitions.
[2021-10-21 20:23:53,840 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-10-21 20:23:53,840 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2021-10-21 20:23:53,840 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-21 20:23:53,841 INFO  L225             Difference]: With dead ends: 24
[2021-10-21 20:23:53,842 INFO  L226             Difference]: Without dead ends: 20
[2021-10-21 20:23:53,842 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-21 20:23:53,843 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2021-10-21 20:23:53,846 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2021-10-21 20:23:53,849 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 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)
[2021-10-21 20:23:53,850 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions.
[2021-10-21 20:23:53,852 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11
[2021-10-21 20:23:53,852 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-21 20:23:53,852 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 22 transitions.
[2021-10-21 20:23:53,853 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-21 20:23:53,853 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions.
[2021-10-21 20:23:53,854 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-10-21 20:23:53,854 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-21 20:23:53,855 INFO  L512         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-21 20:23:53,876 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-10-21 20:23:54,061 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-21 20:23:54,061 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-21 20:23:54,062 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-21 20:23:54,062 INFO  L82        PathProgramCache]: Analyzing trace with hash -1189458428, now seen corresponding path program 1 times
[2021-10-21 20:23:54,062 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-21 20:23:54,062 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904895308]
[2021-10-21 20:23:54,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-21 20:23:54,063 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-21 20:23:54,074 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-21 20:23:54,074 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611307248]
[2021-10-21 20:23:54,074 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-21 20:23:54,074 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-21 20:23:54,075 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3
[2021-10-21 20:23:54,075 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-21 20:23:54,096 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-10-21 20:23:54,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-21 20:23:54,152 INFO  L263         TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-10-21 20:23:54,154 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-21 20:23:54,379 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-21 20:23:54,380 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-21 20:23:54,380 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904895308]
[2021-10-21 20:23:54,380 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-21 20:23:54,381 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611307248]
[2021-10-21 20:23:54,381 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611307248] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-21 20:23:54,381 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-21 20:23:54,381 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-10-21 20:23:54,382 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339173628]
[2021-10-21 20:23:54,383 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-21 20:23:54,383 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-21 20:23:54,384 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-21 20:23:54,384 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-10-21 20:23:54,385 INFO  L87              Difference]: Start difference. First operand 20 states and 22 transitions. Second operand  has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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)
[2021-10-21 20:23:54,550 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-21 20:23:54,550 INFO  L93              Difference]: Finished difference Result 24 states and 25 transitions.
[2021-10-21 20:23:54,550 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-10-21 20:23:54,550 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) Word has length 13
[2021-10-21 20:23:54,551 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-21 20:23:54,551 INFO  L225             Difference]: With dead ends: 24
[2021-10-21 20:23:54,551 INFO  L226             Difference]: Without dead ends: 18
[2021-10-21 20:23:54,552 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2021-10-21 20:23:54,552 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2021-10-21 20:23:54,555 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17.
[2021-10-21 20:23:54,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-21 20:23:54,556 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions.
[2021-10-21 20:23:54,556 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13
[2021-10-21 20:23:54,556 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-21 20:23:54,556 INFO  L470      AbstractCegarLoop]: Abstraction has 17 states and 18 transitions.
[2021-10-21 20:23:54,557 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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)
[2021-10-21 20:23:54,557 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions.
[2021-10-21 20:23:54,557 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-10-21 20:23:54,557 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-21 20:23:54,558 INFO  L512         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-21 20:23:54,596 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-10-21 20:23:54,774 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-21 20:23:54,774 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-21 20:23:54,775 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-21 20:23:54,775 INFO  L82        PathProgramCache]: Analyzing trace with hash -132612007, now seen corresponding path program 1 times
[2021-10-21 20:23:54,775 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-21 20:23:54,776 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654400985]
[2021-10-21 20:23:54,776 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-21 20:23:54,776 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-21 20:23:54,792 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-21 20:23:54,792 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279845399]
[2021-10-21 20:23:54,792 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-21 20:23:54,793 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-21 20:23:54,793 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3
[2021-10-21 20:23:54,794 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-21 20:23:54,808 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-10-21 20:23:54,875 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-21 20:23:54,876 INFO  L354             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-21 20:23:54,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-21 20:23:54,915 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-10-21 20:23:54,916 INFO  L626         BasicCegarLoop]: Counterexample is feasible
[2021-10-21 20:23:54,917 INFO  L764   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-21 20:23:54,919 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-21 20:23:54,960 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-10-21 20:23:55,141 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-21 20:23:55,151 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2021-10-21 20:23:55,182 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:23:55 BoogieIcfgContainer
[2021-10-21 20:23:55,182 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-21 20:23:55,182 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-21 20:23:55,182 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-10-21 20:23:55,183 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-10-21 20:23:55,183 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:44" (3/4) ...
[2021-10-21 20:23:55,185 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-21 20:23:55,236 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/witness.graphml
[2021-10-21 20:23:55,236 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-21 20:23:55,238 INFO  L168              Benchmark]: Toolchain (without parser) took 11194.36 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 80.6 MB in the beginning and 101.4 MB in the end (delta: -20.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB.
[2021-10-21 20:23:55,238 INFO  L168              Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-21 20:23:55,239 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 259.98 ms. Allocated memory is still 113.2 MB. Free memory was 80.6 MB in the beginning and 87.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB.
[2021-10-21 20:23:55,240 INFO  L168              Benchmark]: Boogie Procedure Inliner took 35.66 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 86.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-21 20:23:55,240 INFO  L168              Benchmark]: Boogie Preprocessor took 22.08 ms. Allocated memory is still 113.2 MB. Free memory was 86.2 MB in the beginning and 84.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-21 20:23:55,241 INFO  L168              Benchmark]: RCFGBuilder took 274.07 ms. Allocated memory is still 113.2 MB. Free memory was 84.9 MB in the beginning and 74.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-21 20:23:55,241 INFO  L168              Benchmark]: TraceAbstraction took 10542.04 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 74.4 MB in the beginning and 103.5 MB in the end (delta: -29.0 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-21 20:23:55,242 INFO  L168              Benchmark]: Witness Printer took 53.96 ms. Allocated memory is still 136.3 MB. Free memory was 103.5 MB in the beginning and 101.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-21 20:23:55,245 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 113.2 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 259.98 ms. Allocated memory is still 113.2 MB. Free memory was 80.6 MB in the beginning and 87.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB.
 * Boogie Procedure Inliner took 35.66 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 86.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 22.08 ms. Allocated memory is still 113.2 MB. Free memory was 86.2 MB in the beginning and 84.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * RCFGBuilder took 274.07 ms. Allocated memory is still 113.2 MB. Free memory was 84.9 MB in the beginning and 74.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
 * TraceAbstraction took 10542.04 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 74.4 MB in the beginning and 103.5 MB in the end (delta: -29.0 MB). There was no memory consumed. Max. memory is 16.1 GB.
 * Witness Printer took 53.96 ms. Allocated memory is still 136.3 MB. Free memory was 103.5 MB in the beginning and 101.4 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
  - CounterExampleResult [Line: 14]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L19]              int counter = 0;
       VAL         [counter=0]
[L21]              int A, R;
[L22]              long long u, v, r;
[L23]              A = __VERIFIER_nondet_int()
[L24]              R = __VERIFIER_nondet_int()
[L9]   COND FALSE  !(!cond)
       VAL         [counter=0]
[L9]   COND FALSE  !(!cond)
       VAL         [counter=0]
[L30]              u = ((long long) 2 * R) + 1
[L31]              v = 1
[L32]              r = ((long long) R * R) - A
       VAL         [counter=0]
[L34]  EXPR        counter++
       VAL         [counter=1]
[L34]  COND TRUE   counter++<1
[L12]  COND FALSE  !(!(cond))
       VAL         [counter=1]
[L36]  COND FALSE  !(!(r != 0))
       VAL         [counter=1]
[L38]  COND TRUE   r > 0
[L39]              r = r - v
[L40]              v = v + 2
       VAL         [counter=1]
[L34]  EXPR        counter++
       VAL         [counter=2]
[L34]  COND FALSE  !(counter++<1)
[L12]  COND TRUE   !(cond)
       VAL         [counter=2]
[L14]              reach_error()
       VAL         [counter=2]

  - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable
    Unable to prove that call to reach_error is unreachable
 Reason: Not analyzed. 
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 10434.6ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 12.8ms, AutomataDifference: 7903.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 66 SDtfs, 30 SDslu, 74 SDs, 0 SdLazy, 56 SolverSat, 15 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 7686.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 126.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.3ms SsaConstructionTime, 144.3ms SatisfiabilityAnalysisTime, 624.6ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 13 NumberOfNonLiveVariables, 279 ConjunctsInSsa, 27 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
RESULT: Ultimate proved your program to be incorrect!
[2021-10-21 20:23:55,278 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b0c7c-3326-4b71-8c21-e9b0f314a247/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...