./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version b2eff8ba
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD --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 0f9cd32f4b321d9995f5b714ac7ab8f417de9e23e3b823c49499e1a07b5844c4
...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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-b2eff8b
[2021-10-28 23:59:41,184 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-10-28 23:59:41,186 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-28 23:59:41,221 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-28 23:59:41,222 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-28 23:59:41,223 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-28 23:59:41,225 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-28 23:59:41,227 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-28 23:59:41,230 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-28 23:59:41,231 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-28 23:59:41,232 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-10-28 23:59:41,234 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-28 23:59:41,234 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-28 23:59:41,235 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-28 23:59:41,237 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-28 23:59:41,239 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-28 23:59:41,240 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-28 23:59:41,241 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-28 23:59:41,244 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-28 23:59:41,246 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-28 23:59:41,249 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-28 23:59:41,250 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-28 23:59:41,252 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-10-28 23:59:41,253 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-28 23:59:41,258 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-28 23:59:41,258 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-28 23:59:41,259 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-28 23:59:41,260 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-28 23:59:41,261 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-28 23:59:41,262 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-28 23:59:41,263 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-28 23:59:41,264 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-28 23:59:41,265 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-28 23:59:41,266 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-28 23:59:41,267 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-28 23:59:41,268 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-28 23:59:41,269 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-28 23:59:41,269 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-28 23:59:41,270 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-28 23:59:41,271 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-28 23:59:41,272 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-10-28 23:59:41,273 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-28 23:59:41,301 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-28 23:59:41,301 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-28 23:59:41,301 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-28 23:59:41,302 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-28 23:59:41,303 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-28 23:59:41,303 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-10-28 23:59:41,303 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-10-28 23:59:41,303 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-28 23:59:41,304 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-10-28 23:59:41,304 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-28 23:59:41,304 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-10-28 23:59:41,304 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-28 23:59:41,304 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-10-28 23:59:41,304 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-28 23:59:41,304 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-10-28 23:59:41,305 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-10-28 23:59:41,305 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-10-28 23:59:41,305 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-28 23:59:41,305 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-10-28 23:59:41,305 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-28 23:59:41,305 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-10-28 23:59:41,306 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-28 23:59:41,306 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:59:41,306 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-28 23:59:41,306 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-28 23:59:41,306 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-28 23:59:41,306 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-10-28 23:59:41,306 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-28 23:59:41,307 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-10-28 23:59:41,307 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-10-28 23:59:41,307 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-28 23:59:41,307 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-10-28 23:59:41,307 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_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/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_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD
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 -> 0f9cd32f4b321d9995f5b714ac7ab8f417de9e23e3b823c49499e1a07b5844c4
[2021-10-28 23:59:41,571 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-28 23:59:41,609 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-28 23:59:41,612 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-28 23:59:41,613 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-10-28 23:59:41,614 INFO  L275        PluginConnector]: CDTParser initialized
[2021-10-28 23:59:41,615 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c
[2021-10-28 23:59:41,696 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/data/abe43b469/7f6b86d7dbba4a1a9c262a5364d68e58/FLAG33f43170d
[2021-10-28 23:59:42,230 INFO  L306              CDTParser]: Found 1 translation units.
[2021-10-28 23:59:42,231 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c
[2021-10-28 23:59:42,238 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/data/abe43b469/7f6b86d7dbba4a1a9c262a5364d68e58/FLAG33f43170d
[2021-10-28 23:59:42,574 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/data/abe43b469/7f6b86d7dbba4a1a9c262a5364d68e58
[2021-10-28 23:59:42,576 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-28 23:59:42,577 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-28 23:59:42,579 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-28 23:59:42,579 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-28 23:59:42,583 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-28 23:59:42,583 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:42,584 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13624787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42, skipping insertion in model container
[2021-10-28 23:59:42,585 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:42,592 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-10-28 23:59:42,612 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-10-28 23:59:42,820 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_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c[490,503]
[2021-10-28 23:59:42,841 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:59:42,850 INFO  L203         MainTranslator]: Completed pre-run
[2021-10-28 23:59:42,864 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_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c[490,503]
[2021-10-28 23:59:42,876 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:59:42,892 INFO  L208         MainTranslator]: Completed translation
[2021-10-28 23:59:42,892 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42 WrapperNode
[2021-10-28 23:59:42,893 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-28 23:59:42,894 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-28 23:59:42,894 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-28 23:59:42,895 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-28 23:59:42,903 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:42,912 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:42,950 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-28 23:59:42,952 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-28 23:59:42,952 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-28 23:59:42,952 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-28 23:59:42,965 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:42,966 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:42,971 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:42,972 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:42,988 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:43,002 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:43,005 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:43,015 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-28 23:59:43,020 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-28 23:59:43,020 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-28 23:59:43,020 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-28 23:59:43,022 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (1/1) ...
[2021-10-28 23:59:43,032 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:59:43,046 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:59:43,061 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-28 23:59:43,082 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-28 23:59:43,119 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-28 23:59:43,119 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-28 23:59:43,119 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-28 23:59:43,120 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-28 23:59:43,539 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-28 23:59:43,539 INFO  L299             CfgBuilder]: Removed 26 assume(true) statements.
[2021-10-28 23:59:43,541 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:59:43 BoogieIcfgContainer
[2021-10-28 23:59:43,541 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-28 23:59:43,543 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-28 23:59:43,544 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-28 23:59:43,548 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-28 23:59:43,556 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:59:42" (1/3) ...
[2021-10-28 23:59:43,557 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a0c4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:59:43, skipping insertion in model container
[2021-10-28 23:59:43,558 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:42" (2/3) ...
[2021-10-28 23:59:43,558 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a0c4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:59:43, skipping insertion in model container
[2021-10-28 23:59:43,558 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:59:43" (3/3) ...
[2021-10-28 23:59:43,560 INFO  L111   eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound1.c
[2021-10-28 23:59:43,579 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-28 23:59:43,579 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations.
[2021-10-28 23:59:43,642 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-28 23:59:43,652 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
[2021-10-28 23:59:43,653 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2021-10-28 23:59:43,676 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 43 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 42 states have internal predecessors, (58), 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)
[2021-10-28 23:59:43,692 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-10-28 23:59:43,700 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:59:43,701 INFO  L513         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:59:43,702 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2021-10-28 23:59:43,707 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:59:43,708 INFO  L85        PathProgramCache]: Analyzing trace with hash -141782897, now seen corresponding path program 1 times
[2021-10-28 23:59:43,717 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:59:43,718 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708186143]
[2021-10-28 23:59:43,719 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:59:43,720 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:59:43,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:59:43,936 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:59:43,936 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:59:43,937 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708186143]
[2021-10-28 23:59:43,938 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708186143] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:59:43,938 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:59:43,938 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-28 23:59:43,941 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253723041]
[2021-10-28 23:59:43,945 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-10-28 23:59:43,946 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:59:43,961 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-10-28 23:59:43,962 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-28 23:59:43,964 INFO  L87              Difference]: Start difference. First operand  has 43 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 42 states have internal predecessors, (58), 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 6.5) internal successors, (13), 2 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)
[2021-10-28 23:59:43,988 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:59:43,988 INFO  L93              Difference]: Finished difference Result 83 states and 112 transitions.
[2021-10-28 23:59:43,989 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-28 23:59:43,990 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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
[2021-10-28 23:59:43,990 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:59:43,998 INFO  L225             Difference]: With dead ends: 83
[2021-10-28 23:59:43,998 INFO  L226             Difference]: Without dead ends: 39
[2021-10-28 23:59:44,001 INFO  L786         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-28 23:59:44,017 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2021-10-28 23:59:44,034 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2021-10-28 23:59:44,035 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 38 states have internal predecessors, (42), 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)
[2021-10-28 23:59:44,038 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions.
[2021-10-28 23:59:44,040 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 13
[2021-10-28 23:59:44,041 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:59:44,042 INFO  L470      AbstractCegarLoop]: Abstraction has 39 states and 42 transitions.
[2021-10-28 23:59:44,042 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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)
[2021-10-28 23:59:44,042 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions.
[2021-10-28 23:59:44,043 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-10-28 23:59:44,043 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:59:44,044 INFO  L513         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:59:44,044 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-28 23:59:44,044 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2021-10-28 23:59:44,047 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:59:44,047 INFO  L85        PathProgramCache]: Analyzing trace with hash -1057770534, now seen corresponding path program 1 times
[2021-10-28 23:59:44,048 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:59:44,048 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541374833]
[2021-10-28 23:59:44,048 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:59:44,049 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:59:44,073 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:59:44,074 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250227701]
[2021-10-28 23:59:44,074 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:59:44,075 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:59:44,075 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:59:44,080 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:59:44,084 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-10-28 23:59:44,162 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:59:44,164 INFO  L263         TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-10-28 23:59:44,168 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:59:44,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:59:44,249 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:59:44,249 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541374833]
[2021-10-28 23:59:44,249 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:59:44,250 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250227701]
[2021-10-28 23:59:44,250 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [250227701] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:59:44,250 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:59:44,251 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-10-28 23:59:44,251 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458199163]
[2021-10-28 23:59:44,252 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-28 23:59:44,252 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:59:44,253 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-28 23:59:44,253 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-28 23:59:44,254 INFO  L87              Difference]: Start difference. First operand 39 states and 42 transitions. Second operand  has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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)
[2021-10-28 23:59:44,271 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:59:44,271 INFO  L93              Difference]: Finished difference Result 49 states and 52 transitions.
[2021-10-28 23:59:44,272 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-10-28 23:59:44,272 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14
[2021-10-28 23:59:44,273 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:59:44,273 INFO  L225             Difference]: With dead ends: 49
[2021-10-28 23:59:44,274 INFO  L226             Difference]: Without dead ends: 41
[2021-10-28 23:59:44,286 INFO  L786         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-28 23:59:44,287 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2021-10-28 23:59:44,290 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2021-10-28 23:59:44,291 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 40 states have internal predecessors, (44), 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)
[2021-10-28 23:59:44,292 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions.
[2021-10-28 23:59:44,292 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14
[2021-10-28 23:59:44,292 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:59:44,292 INFO  L470      AbstractCegarLoop]: Abstraction has 41 states and 44 transitions.
[2021-10-28 23:59:44,293 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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)
[2021-10-28 23:59:44,293 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions.
[2021-10-28 23:59:44,293 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-10-28 23:59:44,294 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:59:44,294 INFO  L513         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:59:44,330 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-10-28 23:59:44,502 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:59:44,503 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2021-10-28 23:59:44,503 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:59:44,504 INFO  L85        PathProgramCache]: Analyzing trace with hash 1568670238, now seen corresponding path program 1 times
[2021-10-28 23:59:44,504 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:59:44,504 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519706533]
[2021-10-28 23:59:44,504 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:59:44,505 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:59:44,526 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:59:44,526 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8199019]
[2021-10-28 23:59:44,526 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:59:44,526 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:59:44,527 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:59:44,528 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:59:44,554 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-28 23:59:44,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:59:44,608 INFO  L263         TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-10-28 23:59:44,610 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:59:44,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:59:44,744 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:59:44,744 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519706533]
[2021-10-28 23:59:44,745 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:59:44,745 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8199019]
[2021-10-28 23:59:44,745 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [8199019] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:59:44,745 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:59:44,746 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-10-28 23:59:44,746 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859140123]
[2021-10-28 23:59:44,746 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-28 23:59:44,747 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:59:44,747 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-28 23:59:44,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-10-28 23:59:44,748 INFO  L87              Difference]: Start difference. First operand 41 states and 44 transitions. Second operand  has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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)
[2021-10-28 23:59:44,876 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:59:44,876 INFO  L93              Difference]: Finished difference Result 69 states and 74 transitions.
[2021-10-28 23:59:44,877 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-10-28 23:59:44,877 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15
[2021-10-28 23:59:44,877 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:59:44,878 INFO  L225             Difference]: With dead ends: 69
[2021-10-28 23:59:44,879 INFO  L226             Difference]: Without dead ends: 61
[2021-10-28 23:59:44,879 INFO  L786         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-10-28 23:59:44,880 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2021-10-28 23:59:44,890 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42.
[2021-10-28 23:59:44,890 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 36 states have (on average 1.25) internal successors, (45), 41 states have internal predecessors, (45), 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)
[2021-10-28 23:59:44,891 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions.
[2021-10-28 23:59:44,891 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 15
[2021-10-28 23:59:44,891 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:59:44,892 INFO  L470      AbstractCegarLoop]: Abstraction has 42 states and 45 transitions.
[2021-10-28 23:59:44,892 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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)
[2021-10-28 23:59:44,892 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions.
[2021-10-28 23:59:44,893 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-10-28 23:59:44,893 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:59:44,893 INFO  L513         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:59:44,926 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-28 23:59:45,109 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:59:45,110 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2021-10-28 23:59:45,111 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:59:45,111 INFO  L85        PathProgramCache]: Analyzing trace with hash 1384108475, now seen corresponding path program 1 times
[2021-10-28 23:59:45,111 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:59:45,111 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124873256]
[2021-10-28 23:59:45,112 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:59:45,112 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:59:45,138 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:59:45,138 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728485502]
[2021-10-28 23:59:45,138 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:59:45,139 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:59:45,139 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:59:45,156 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:59:45,178 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-10-28 23:59:45,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:59:45,264 INFO  L263         TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-10-28 23:59:45,265 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:59:45,390 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:59:45,390 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:59:45,390 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124873256]
[2021-10-28 23:59:45,390 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:59:45,390 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728485502]
[2021-10-28 23:59:45,391 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [728485502] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:59:45,391 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:59:45,391 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-10-28 23:59:45,391 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764096214]
[2021-10-28 23:59:45,392 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-28 23:59:45,392 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:59:45,392 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-28 23:59:45,393 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-10-28 23:59:45,393 INFO  L87              Difference]: Start difference. First operand 42 states and 45 transitions. Second operand  has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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)
[2021-10-28 23:59:45,437 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:59:45,437 INFO  L93              Difference]: Finished difference Result 56 states and 61 transitions.
[2021-10-28 23:59:45,438 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-10-28 23:59:45,438 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 16
[2021-10-28 23:59:45,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:59:45,439 INFO  L225             Difference]: With dead ends: 56
[2021-10-28 23:59:45,439 INFO  L226             Difference]: Without dead ends: 26
[2021-10-28 23:59:45,439 INFO  L786         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2021-10-28 23:59:45,440 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2021-10-28 23:59:45,442 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2021-10-28 23:59:45,442 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 26 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 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)
[2021-10-28 23:59:45,443 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions.
[2021-10-28 23:59:45,443 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16
[2021-10-28 23:59:45,443 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:59:45,444 INFO  L470      AbstractCegarLoop]: Abstraction has 26 states and 27 transitions.
[2021-10-28 23:59:45,444 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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)
[2021-10-28 23:59:45,444 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions.
[2021-10-28 23:59:45,444 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-10-28 23:59:45,445 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:59:45,445 INFO  L513         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:59:45,494 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-10-28 23:59:45,674 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:59:45,675 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2021-10-28 23:59:45,675 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:59:45,675 INFO  L85        PathProgramCache]: Analyzing trace with hash 1862118746, now seen corresponding path program 1 times
[2021-10-28 23:59:45,675 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:59:45,676 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684977039]
[2021-10-28 23:59:45,676 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:59:45,676 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:59:45,699 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:59:45,703 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174526518]
[2021-10-28 23:59:45,703 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:59:45,703 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:59:45,704 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:59:45,704 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:59:45,709 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-10-28 23:59:45,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:59:45,797 INFO  L355             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-28 23:59:45,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:59:45,838 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-10-28 23:59:45,838 INFO  L627         BasicCegarLoop]: Counterexample is feasible
[2021-10-28 23:59:45,839 INFO  L764   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 23:59:45,841 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 23:59:45,842 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 23:59:45,842 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 23:59:45,842 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 23:59:45,842 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 23:59:45,886 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-10-28 23:59:46,058 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:59:46,061 INFO  L731         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2021-10-28 23:59:46,064 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2021-10-28 23:59:46,096 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:59:46 BoogieIcfgContainer
[2021-10-28 23:59:46,096 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-28 23:59:46,097 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-28 23:59:46,097 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-10-28 23:59:46,097 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-10-28 23:59:46,098 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:59:43" (3/4) ...
[2021-10-28 23:59:46,099 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-28 23:59:46,172 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/witness.graphml
[2021-10-28 23:59:46,178 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-28 23:59:46,179 INFO  L168              Benchmark]: Toolchain (without parser) took 3601.14 ms. Allocated memory is still 115.3 MB. Free memory was 78.0 MB in the beginning and 49.1 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB.
[2021-10-28 23:59:46,180 INFO  L168              Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 115.3 MB. Free memory is still 94.7 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:59:46,180 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 314.05 ms. Allocated memory is still 115.3 MB. Free memory was 77.8 MB in the beginning and 89.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-28 23:59:46,181 INFO  L168              Benchmark]: Boogie Procedure Inliner took 56.70 ms. Allocated memory is still 115.3 MB. Free memory was 89.8 MB in the beginning and 87.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:59:46,181 INFO  L168              Benchmark]: Boogie Preprocessor took 67.39 ms. Allocated memory is still 115.3 MB. Free memory was 87.7 MB in the beginning and 86.7 MB in the end (delta: 983.2 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:59:46,183 INFO  L168              Benchmark]: RCFGBuilder took 521.63 ms. Allocated memory is still 115.3 MB. Free memory was 86.7 MB in the beginning and 74.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB.
[2021-10-28 23:59:46,183 INFO  L168              Benchmark]: TraceAbstraction took 2552.84 ms. Allocated memory is still 115.3 MB. Free memory was 74.1 MB in the beginning and 52.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB.
[2021-10-28 23:59:46,183 INFO  L168              Benchmark]: Witness Printer took 81.33 ms. Allocated memory is still 115.3 MB. Free memory was 52.0 MB in the beginning and 49.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
[2021-10-28 23:59:46,185 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.23 ms. Allocated memory is still 115.3 MB. Free memory is still 94.7 MB. There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 314.05 ms. Allocated memory is still 115.3 MB. Free memory was 77.8 MB in the beginning and 89.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
 * Boogie Procedure Inliner took 56.70 ms. Allocated memory is still 115.3 MB. Free memory was 89.8 MB in the beginning and 87.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 67.39 ms. Allocated memory is still 115.3 MB. Free memory was 87.7 MB in the beginning and 86.7 MB in the end (delta: 983.2 kB). There was no memory consumed. Max. memory is 16.1 GB.
 * RCFGBuilder took 521.63 ms. Allocated memory is still 115.3 MB. Free memory was 86.7 MB in the beginning and 74.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB.
 * TraceAbstraction took 2552.84 ms. Allocated memory is still 115.3 MB. Free memory was 74.1 MB in the beginning and 52.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB.
 * Witness Printer took 81.33 ms. Allocated memory is still 115.3 MB. Free memory was 52.0 MB in the beginning and 49.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 13]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L18]              int counter = 0;
       VAL         [counter=0]
[L20]              int x, y;
[L21]              long long a, b, p, q, r, s, c, k, xy, yy;
[L22]              x = __VERIFIER_nondet_int()
[L23]              y = __VERIFIER_nondet_int()
[L8]   COND FALSE  !(!cond)
       VAL         [counter=0]
[L8]   COND FALSE  !(!cond)
       VAL         [counter=0]
[L27]              a = x
[L28]              b = y
[L29]              p = 1
[L30]              q = 0
[L31]              r = 0
[L32]              s = 1
[L33]              c = 0
[L34]              k = 0
[L35]              xy = (long long) x * y
[L36]              yy = (long long) y * y
[L8]   COND FALSE  !(!cond)
       VAL         [counter=0]
[L8]   COND FALSE  !(!cond)
       VAL         [counter=0]
[L40]  EXPR        counter++
       VAL         [counter=1]
[L40]  COND TRUE   counter++<1
[L41]  COND FALSE  !(!(b != 0))
[L43]              c = a
[L44]              k = 0
       VAL         [counter=1]
[L46]  EXPR        counter++
       VAL         [counter=2]
[L46]  COND FALSE  !(counter++<1)
[L57]              a = b
[L58]              b = c
[L60]              long long temp;
[L61]              temp = p
[L62]              p = q
[L63]              q = temp - q * k
[L64]              temp = r
[L65]              r = s
[L66]              s = temp - s * k
       VAL         [counter=2]
[L40]  EXPR        counter++
       VAL         [counter=3]
[L40]  COND FALSE  !(counter++<1)
[L11]  COND TRUE   !(cond)
       VAL         [counter=3]
[L13]              reach_error()
       VAL         [counter=3]

  - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable
    Unable to prove that call to reach_error is unreachable
 Reason: Not analyzed. 
  - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable
    Unable to prove that call to reach_error is unreachable
 Reason: Not analyzed. 
  - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable
    Unable to prove that call to reach_error is unreachable
 Reason: Not analyzed. 
  - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable
    Unable to prove that call to reach_error is unreachable
 Reason: Not analyzed. 
  - UnprovableResult [Line: 13]: 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, 43 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 103 SDslu, 147 SDs, 0 SdLazy, 61 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 4 NumberOfNonLiveVariables, 291 ConjunctsInSsa, 15 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!
[2021-10-28 23:59:46,218 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd9a5d0-fe36-466b-9aa6-ce3b10b49cba/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...