./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i --full-output --architecture 32bit


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


Checking for overflows
Using default analysis
Version 53f42b1a
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-53f42b1
[2021-11-20 05:47:05,806 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-11-20 05:47:05,809 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-20 05:47:05,866 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-20 05:47:05,867 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-20 05:47:05,871 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-20 05:47:05,873 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-20 05:47:05,877 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-20 05:47:05,880 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-20 05:47:05,886 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-20 05:47:05,887 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-11-20 05:47:05,889 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-20 05:47:05,890 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-20 05:47:05,892 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-20 05:47:05,895 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-20 05:47:05,899 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-20 05:47:05,901 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-20 05:47:05,903 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-20 05:47:05,905 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-20 05:47:05,910 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-20 05:47:05,912 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-20 05:47:05,914 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-20 05:47:05,915 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-11-20 05:47:05,916 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-20 05:47:05,920 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-20 05:47:05,920 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-20 05:47:05,921 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-20 05:47:05,922 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-20 05:47:05,923 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-20 05:47:05,924 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-20 05:47:05,924 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-20 05:47:05,925 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-20 05:47:05,926 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-20 05:47:05,927 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-20 05:47:05,929 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-20 05:47:05,929 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-20 05:47:05,930 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-20 05:47:05,930 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-20 05:47:05,930 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-20 05:47:05,931 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-20 05:47:05,932 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-11-20 05:47:05,933 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf
[2021-11-20 05:47:05,956 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-11-20 05:47:05,956 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-20 05:47:05,956 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-20 05:47:05,957 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-20 05:47:05,957 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-20 05:47:05,958 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-20 05:47:05,959 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-20 05:47:05,959 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-11-20 05:47:05,959 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-11-20 05:47:05,959 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-20 05:47:05,960 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-11-20 05:47:05,960 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2021-11-20 05:47:05,960 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-11-20 05:47:05,960 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-11-20 05:47:05,961 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-11-20 05:47:05,961 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-11-20 05:47:05,961 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-20 05:47:05,961 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-11-20 05:47:05,961 INFO  L138        SettingsManager]:  * Check absence of signed integer overflows=true
[2021-11-20 05:47:05,962 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-11-20 05:47:05,962 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-11-20 05:47:05,962 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-11-20 05:47:05,962 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-11-20 05:47:05,962 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-20 05:47:05,963 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-11-20 05:47:05,963 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-11-20 05:47:05,963 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 05:47:05,963 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-20 05:47:05,964 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-11-20 05:47:05,964 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-20 05:47:05,964 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-11-20 05:47:05,964 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-20 05:47:05,964 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-20 05:47:05,965 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-11-20 05:47:05,965 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_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/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_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> 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 -> ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085
[2021-11-20 05:47:06,286 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-20 05:47:06,321 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-20 05:47:06,323 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-20 05:47:06,324 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-11-20 05:47:06,326 INFO  L275        PluginConnector]: CDTParser initialized
[2021-11-20 05:47:06,328 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i
[2021-11-20 05:47:06,395 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/data/d6dc516e7/17ae40883f334f11806bda5439d7fa31/FLAG7e2b7a520
[2021-11-20 05:47:06,974 INFO  L306              CDTParser]: Found 1 translation units.
[2021-11-20 05:47:06,974 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i
[2021-11-20 05:47:06,991 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/data/d6dc516e7/17ae40883f334f11806bda5439d7fa31/FLAG7e2b7a520
[2021-11-20 05:47:07,225 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/data/d6dc516e7/17ae40883f334f11806bda5439d7fa31
[2021-11-20 05:47:07,228 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-20 05:47:07,229 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-20 05:47:07,231 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-20 05:47:07,231 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-20 05:47:07,235 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-20 05:47:07,236 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:07" (1/1) ...
[2021-11-20 05:47:07,237 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b7e3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:07, skipping insertion in model container
[2021-11-20 05:47:07,238 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:07" (1/1) ...
[2021-11-20 05:47:07,245 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-11-20 05:47:07,307 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-11-20 05:47:07,800 WARN  L230   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_198ff02d-14c7-4c50-8d86-77e0815fc4d6/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i[33021,33034]
[2021-11-20 05:47:07,918 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-20 05:47:07,927 INFO  L203         MainTranslator]: Completed pre-run
[2021-11-20 05:47:07,957 WARN  L230   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_198ff02d-14c7-4c50-8d86-77e0815fc4d6/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i[33021,33034]
[2021-11-20 05:47:07,998 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-20 05:47:08,055 INFO  L208         MainTranslator]: Completed translation
[2021-11-20 05:47:08,056 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08 WrapperNode
[2021-11-20 05:47:08,056 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-20 05:47:08,057 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-20 05:47:08,058 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-20 05:47:08,058 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-20 05:47:08,066 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (1/1) ...
[2021-11-20 05:47:08,112 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (1/1) ...
[2021-11-20 05:47:08,161 INFO  L137                Inliner]: procedures = 177, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 627
[2021-11-20 05:47:08,161 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-20 05:47:08,162 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-20 05:47:08,162 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-20 05:47:08,163 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-11-20 05:47:08,171 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (1/1) ...
[2021-11-20 05:47:08,172 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (1/1) ...
[2021-11-20 05:47:08,180 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (1/1) ...
[2021-11-20 05:47:08,194 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (1/1) ...
[2021-11-20 05:47:08,248 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (1/1) ...
[2021-11-20 05:47:08,263 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (1/1) ...
[2021-11-20 05:47:08,270 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (1/1) ...
[2021-11-20 05:47:08,281 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-20 05:47:08,290 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-20 05:47:08,291 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-11-20 05:47:08,292 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-11-20 05:47:08,294 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (1/1) ...
[2021-11-20 05:47:08,303 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 05:47:08,317 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:08,336 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-20 05:47:08,354 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-20 05:47:08,382 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-11-20 05:47:08,383 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-20 05:47:08,383 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-20 05:47:08,383 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-11-20 05:47:08,383 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset
[2021-11-20 05:47:08,383 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset
[2021-11-20 05:47:08,384 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-11-20 05:47:08,384 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-20 05:47:08,384 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-20 05:47:08,384 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-11-20 05:47:08,384 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-11-20 05:47:08,384 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-20 05:47:08,385 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-20 05:47:08,385 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-20 05:47:08,385 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-20 05:47:08,610 INFO  L236             CfgBuilder]: Building ICFG
[2021-11-20 05:47:08,622 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-20 05:47:09,566 INFO  L277             CfgBuilder]: Performing block encoding
[2021-11-20 05:47:09,579 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-20 05:47:09,579 INFO  L301             CfgBuilder]: Removed 31 assume(true) statements.
[2021-11-20 05:47:09,582 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:09 BoogieIcfgContainer
[2021-11-20 05:47:09,582 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-20 05:47:09,585 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-20 05:47:09,585 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-11-20 05:47:09,589 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-11-20 05:47:09,589 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:47:07" (1/3) ...
[2021-11-20 05:47:09,590 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbd0fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:47:09, skipping insertion in model container
[2021-11-20 05:47:09,590 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08" (2/3) ...
[2021-11-20 05:47:09,591 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbd0fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:47:09, skipping insertion in model container
[2021-11-20 05:47:09,591 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:09" (3/3) ...
[2021-11-20 05:47:09,601 INFO  L111   eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-1.i
[2021-11-20 05:47:09,607 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-20 05:47:09,608 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations.
[2021-11-20 05:47:09,658 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-20 05:47:09,664 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-11-20 05:47:09,664 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2021-11-20 05:47:09,683 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 138 states, 116 states have (on average 1.6810344827586208) internal successors, (195), 132 states have internal predecessors, (195), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13)
[2021-11-20 05:47:09,687 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-11-20 05:47:09,687 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:09,688 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:09,689 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:09,694 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:09,695 INFO  L85        PathProgramCache]: Analyzing trace with hash 1126635289, now seen corresponding path program 1 times
[2021-11-20 05:47:09,705 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:09,706 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517941057]
[2021-11-20 05:47:09,706 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:09,707 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:09,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:09,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 05:47:09,867 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:09,868 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517941057]
[2021-11-20 05:47:09,868 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517941057] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:47:09,869 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:47:09,869 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 05:47:09,871 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499268775]
[2021-11-20 05:47:09,872 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:09,876 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 05:47:09,876 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:09,902 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 05:47:09,903 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 05:47:09,906 INFO  L87              Difference]: Start difference. First operand  has 138 states, 116 states have (on average 1.6810344827586208) internal successors, (195), 132 states have internal predecessors, (195), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 05:47:10,026 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:10,027 INFO  L93              Difference]: Finished difference Result 366 states and 607 transitions.
[2021-11-20 05:47:10,028 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 05:47:10,029 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2021-11-20 05:47:10,030 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:10,043 INFO  L225             Difference]: With dead ends: 366
[2021-11-20 05:47:10,044 INFO  L226             Difference]: Without dead ends: 226
[2021-11-20 05:47:10,048 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 05:47:10,052 INFO  L933         BasicCegarLoop]: 211 mSDtfsCounter, 113 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:10,053 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 386 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:47:10,072 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 226 states.
[2021-11-20 05:47:10,103 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 137.
[2021-11-20 05:47:10,105 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 137 states, 117 states have (on average 1.3504273504273505) internal successors, (158), 131 states have internal predecessors, (158), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13)
[2021-11-20 05:47:10,108 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions.
[2021-11-20 05:47:10,109 INFO  L78                 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 6
[2021-11-20 05:47:10,109 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:10,110 INFO  L470      AbstractCegarLoop]: Abstraction has 137 states and 184 transitions.
[2021-11-20 05:47:10,110 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 05:47:10,110 INFO  L276                IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions.
[2021-11-20 05:47:10,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2021-11-20 05:47:10,142 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:10,142 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:10,142 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-20 05:47:10,143 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:10,144 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:10,144 INFO  L85        PathProgramCache]: Analyzing trace with hash -1116651610, now seen corresponding path program 1 times
[2021-11-20 05:47:10,144 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:10,145 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292837710]
[2021-11-20 05:47:10,145 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:10,145 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:10,171 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:10,171 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773906438]
[2021-11-20 05:47:10,172 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:10,172 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:10,172 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:10,179 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:10,182 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-20 05:47:10,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:10,327 INFO  L263         TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 05:47:10,335 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:10,531 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 05:47:10,531 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:47:10,532 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:10,532 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292837710]
[2021-11-20 05:47:10,533 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:10,533 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773906438]
[2021-11-20 05:47:10,537 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [773906438] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:47:10,542 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:47:10,542 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 05:47:10,543 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638917818]
[2021-11-20 05:47:10,543 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:10,545 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 05:47:10,547 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:10,548 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 05:47:10,549 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 05:47:10,552 INFO  L87              Difference]: Start difference. First operand 137 states and 184 transitions. Second operand  has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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)
[2021-11-20 05:47:10,648 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:10,649 INFO  L93              Difference]: Finished difference Result 289 states and 393 transitions.
[2021-11-20 05:47:10,649 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 05:47:10,650 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56
[2021-11-20 05:47:10,650 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:10,652 INFO  L225             Difference]: With dead ends: 289
[2021-11-20 05:47:10,652 INFO  L226             Difference]: Without dead ends: 158
[2021-11-20 05:47:10,654 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 05:47:10,655 INFO  L933         BasicCegarLoop]: 160 mSDtfsCounter, 9 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:10,656 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 305 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:47:10,657 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2021-11-20 05:47:10,670 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157.
[2021-11-20 05:47:10,671 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 157 states, 137 states have (on average 1.2992700729927007) internal successors, (178), 151 states have internal predecessors, (178), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13)
[2021-11-20 05:47:10,672 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions.
[2021-11-20 05:47:10,673 INFO  L78                 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 56
[2021-11-20 05:47:10,673 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:10,674 INFO  L470      AbstractCegarLoop]: Abstraction has 157 states and 204 transitions.
[2021-11-20 05:47:10,674 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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)
[2021-11-20 05:47:10,674 INFO  L276                IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions.
[2021-11-20 05:47:10,676 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2021-11-20 05:47:10,677 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:10,677 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:10,715 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:10,890 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2021-11-20 05:47:10,890 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:10,891 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:10,891 INFO  L85        PathProgramCache]: Analyzing trace with hash -1391411224, now seen corresponding path program 1 times
[2021-11-20 05:47:10,891 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:10,891 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900999712]
[2021-11-20 05:47:10,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:10,892 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:10,910 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:10,911 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718592336]
[2021-11-20 05:47:10,911 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:10,911 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:10,912 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:10,913 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:10,937 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-20 05:47:11,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:11,053 INFO  L263         TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 05:47:11,057 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:11,188 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 05:47:11,189 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:47:11,189 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:11,192 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900999712]
[2021-11-20 05:47:11,192 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:11,193 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718592336]
[2021-11-20 05:47:11,193 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718592336] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:47:11,193 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:47:11,193 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-20 05:47:11,193 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790328588]
[2021-11-20 05:47:11,194 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:11,194 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 05:47:11,194 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:11,195 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 05:47:11,195 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 05:47:11,196 INFO  L87              Difference]: Start difference. First operand 157 states and 204 transitions. Second operand  has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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)
[2021-11-20 05:47:11,296 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:11,297 INFO  L93              Difference]: Finished difference Result 299 states and 393 transitions.
[2021-11-20 05:47:11,297 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-11-20 05:47:11,299 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56
[2021-11-20 05:47:11,299 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:11,303 INFO  L225             Difference]: With dead ends: 299
[2021-11-20 05:47:11,304 INFO  L226             Difference]: Without dead ends: 148
[2021-11-20 05:47:11,308 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 05:47:11,311 INFO  L933         BasicCegarLoop]: 161 mSDtfsCounter, 135 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:11,313 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 339 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:47:11,315 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 148 states.
[2021-11-20 05:47:11,331 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 143.
[2021-11-20 05:47:11,332 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 143 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 137 states have internal predecessors, (157), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13)
[2021-11-20 05:47:11,334 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 183 transitions.
[2021-11-20 05:47:11,334 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 183 transitions. Word has length 56
[2021-11-20 05:47:11,335 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:11,335 INFO  L470      AbstractCegarLoop]: Abstraction has 143 states and 183 transitions.
[2021-11-20 05:47:11,335 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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)
[2021-11-20 05:47:11,335 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 183 transitions.
[2021-11-20 05:47:11,336 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2021-11-20 05:47:11,337 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:11,337 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:11,375 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:11,562 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:11,562 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:11,563 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:11,563 INFO  L85        PathProgramCache]: Analyzing trace with hash 632524954, now seen corresponding path program 1 times
[2021-11-20 05:47:11,563 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:11,563 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716708293]
[2021-11-20 05:47:11,564 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:11,564 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:11,578 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:11,578 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743856153]
[2021-11-20 05:47:11,578 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:11,579 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:11,579 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:11,580 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:11,583 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-20 05:47:11,709 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:11,710 INFO  L263         TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 05:47:11,719 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:11,889 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 05:47:11,890 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:47:11,890 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:11,891 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716708293]
[2021-11-20 05:47:11,891 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:11,891 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743856153]
[2021-11-20 05:47:11,891 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [743856153] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:47:11,891 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:47:11,892 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 05:47:11,892 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108469021]
[2021-11-20 05:47:11,892 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:11,893 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 05:47:11,893 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:11,894 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 05:47:11,895 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 05:47:11,895 INFO  L87              Difference]: Start difference. First operand 143 states and 183 transitions. Second operand  has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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)
[2021-11-20 05:47:11,947 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:11,947 INFO  L93              Difference]: Finished difference Result 238 states and 298 transitions.
[2021-11-20 05:47:11,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-11-20 05:47:11,948 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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 56
[2021-11-20 05:47:11,949 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:11,953 INFO  L225             Difference]: With dead ends: 238
[2021-11-20 05:47:11,953 INFO  L226             Difference]: Without dead ends: 237
[2021-11-20 05:47:11,953 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 05:47:11,957 INFO  L933         BasicCegarLoop]: 168 mSDtfsCounter, 55 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:11,959 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 498 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 05:47:11,961 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 237 states.
[2021-11-20 05:47:11,988 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235.
[2021-11-20 05:47:11,996 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 235 states, 212 states have (on average 1.240566037735849) internal successors, (263), 226 states have internal predecessors, (263), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 05:47:11,998 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 295 transitions.
[2021-11-20 05:47:11,998 INFO  L78                 Accepts]: Start accepts. Automaton has 235 states and 295 transitions. Word has length 56
[2021-11-20 05:47:12,001 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:12,001 INFO  L470      AbstractCegarLoop]: Abstraction has 235 states and 295 transitions.
[2021-11-20 05:47:12,002 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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)
[2021-11-20 05:47:12,003 INFO  L276                IsEmpty]: Start isEmpty. Operand 235 states and 295 transitions.
[2021-11-20 05:47:12,006 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2021-11-20 05:47:12,008 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:12,009 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:12,053 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:12,242 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:12,242 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:12,243 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:12,243 INFO  L85        PathProgramCache]: Analyzing trace with hash -1866562491, now seen corresponding path program 1 times
[2021-11-20 05:47:12,243 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:12,243 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773796742]
[2021-11-20 05:47:12,243 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:12,244 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:12,266 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:12,271 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576313597]
[2021-11-20 05:47:12,271 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:12,271 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:12,272 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:12,273 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:12,305 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-20 05:47:12,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:12,411 INFO  L263         TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 05:47:12,419 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:12,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 05:47:12,593 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:47:12,593 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:12,593 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773796742]
[2021-11-20 05:47:12,593 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:12,593 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576313597]
[2021-11-20 05:47:12,594 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576313597] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:47:12,594 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:47:12,594 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 05:47:12,594 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904025790]
[2021-11-20 05:47:12,594 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:12,595 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 05:47:12,595 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:12,596 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 05:47:12,596 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 05:47:12,596 INFO  L87              Difference]: Start difference. First operand 235 states and 295 transitions. Second operand  has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 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)
[2021-11-20 05:47:12,637 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:12,637 INFO  L93              Difference]: Finished difference Result 235 states and 295 transitions.
[2021-11-20 05:47:12,637 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-11-20 05:47:12,638 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 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 57
[2021-11-20 05:47:12,638 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:12,642 INFO  L225             Difference]: With dead ends: 235
[2021-11-20 05:47:12,642 INFO  L226             Difference]: Without dead ends: 234
[2021-11-20 05:47:12,643 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 05:47:12,644 INFO  L933         BasicCegarLoop]: 162 mSDtfsCounter, 85 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:12,644 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 344 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 05:47:12,646 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 234 states.
[2021-11-20 05:47:12,667 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234.
[2021-11-20 05:47:12,668 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 234 states, 212 states have (on average 1.2358490566037736) internal successors, (262), 225 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 05:47:12,671 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 294 transitions.
[2021-11-20 05:47:12,671 INFO  L78                 Accepts]: Start accepts. Automaton has 234 states and 294 transitions. Word has length 57
[2021-11-20 05:47:12,673 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:12,673 INFO  L470      AbstractCegarLoop]: Abstraction has 234 states and 294 transitions.
[2021-11-20 05:47:12,673 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 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)
[2021-11-20 05:47:12,674 INFO  L276                IsEmpty]: Start isEmpty. Operand 234 states and 294 transitions.
[2021-11-20 05:47:12,678 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2021-11-20 05:47:12,678 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:12,679 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:12,713 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:12,894 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:12,894 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:12,895 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:12,895 INFO  L85        PathProgramCache]: Analyzing trace with hash 1237589276, now seen corresponding path program 1 times
[2021-11-20 05:47:12,895 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:12,895 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423032991]
[2021-11-20 05:47:12,895 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:12,896 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:12,922 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:12,922 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078548928]
[2021-11-20 05:47:12,922 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:12,923 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:12,923 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:12,939 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:12,956 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-20 05:47:13,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:13,068 INFO  L263         TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-20 05:47:13,078 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:13,261 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 05:47:13,261 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:13,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 05:47:13,443 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:13,443 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423032991]
[2021-11-20 05:47:13,443 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:13,443 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078548928]
[2021-11-20 05:47:13,443 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078548928] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:47:13,443 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:47:13,444 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2021-11-20 05:47:13,444 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121731377]
[2021-11-20 05:47:13,444 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:47:13,445 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-20 05:47:13,446 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:13,446 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-20 05:47:13,446 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2021-11-20 05:47:13,446 INFO  L87              Difference]: Start difference. First operand 234 states and 294 transitions. Second operand  has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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)
[2021-11-20 05:47:13,553 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:13,553 INFO  L93              Difference]: Finished difference Result 367 states and 469 transitions.
[2021-11-20 05:47:13,553 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-11-20 05:47:13,554 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 61
[2021-11-20 05:47:13,554 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:13,556 INFO  L225             Difference]: With dead ends: 367
[2021-11-20 05:47:13,557 INFO  L226             Difference]: Without dead ends: 333
[2021-11-20 05:47:13,557 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2021-11-20 05:47:13,558 INFO  L933         BasicCegarLoop]: 199 mSDtfsCounter, 522 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:13,558 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 714 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:47:13,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 333 states.
[2021-11-20 05:47:13,573 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333.
[2021-11-20 05:47:13,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 333 states, 308 states have (on average 1.2207792207792207) internal successors, (376), 321 states have internal predecessors, (376), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19)
[2021-11-20 05:47:13,576 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 414 transitions.
[2021-11-20 05:47:13,577 INFO  L78                 Accepts]: Start accepts. Automaton has 333 states and 414 transitions. Word has length 61
[2021-11-20 05:47:13,577 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:13,577 INFO  L470      AbstractCegarLoop]: Abstraction has 333 states and 414 transitions.
[2021-11-20 05:47:13,578 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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)
[2021-11-20 05:47:13,578 INFO  L276                IsEmpty]: Start isEmpty. Operand 333 states and 414 transitions.
[2021-11-20 05:47:13,579 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2021-11-20 05:47:13,579 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:13,580 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:13,618 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:13,795 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2021-11-20 05:47:13,795 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:13,796 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:13,796 INFO  L85        PathProgramCache]: Analyzing trace with hash 1237285228, now seen corresponding path program 1 times
[2021-11-20 05:47:13,796 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:13,796 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243539942]
[2021-11-20 05:47:13,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:13,797 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:13,808 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:13,808 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867226877]
[2021-11-20 05:47:13,808 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:13,809 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:13,809 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:13,810 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:13,814 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-20 05:47:13,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:13,923 INFO  L263         TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-11-20 05:47:13,925 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:14,220 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 05:47:14,220 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:47:14,221 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:14,221 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243539942]
[2021-11-20 05:47:14,221 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:14,221 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867226877]
[2021-11-20 05:47:14,221 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [867226877] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:47:14,221 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:47:14,222 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 05:47:14,222 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521988365]
[2021-11-20 05:47:14,222 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:14,223 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 05:47:14,223 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:14,223 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 05:47:14,223 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 05:47:14,224 INFO  L87              Difference]: Start difference. First operand 333 states and 414 transitions. Second operand  has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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)
[2021-11-20 05:47:14,281 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:14,281 INFO  L93              Difference]: Finished difference Result 606 states and 760 transitions.
[2021-11-20 05:47:14,281 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 05:47:14,282 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61
[2021-11-20 05:47:14,282 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:14,284 INFO  L225             Difference]: With dead ends: 606
[2021-11-20 05:47:14,284 INFO  L226             Difference]: Without dead ends: 331
[2021-11-20 05:47:14,285 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 05:47:14,286 INFO  L933         BasicCegarLoop]: 171 mSDtfsCounter, 15 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:14,287 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 327 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 05:47:14,288 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 331 states.
[2021-11-20 05:47:14,298 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331.
[2021-11-20 05:47:14,299 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 331 states, 306 states have (on average 1.2189542483660132) internal successors, (373), 319 states have internal predecessors, (373), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19)
[2021-11-20 05:47:14,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 411 transitions.
[2021-11-20 05:47:14,302 INFO  L78                 Accepts]: Start accepts. Automaton has 331 states and 411 transitions. Word has length 61
[2021-11-20 05:47:14,302 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:14,302 INFO  L470      AbstractCegarLoop]: Abstraction has 331 states and 411 transitions.
[2021-11-20 05:47:14,302 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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)
[2021-11-20 05:47:14,303 INFO  L276                IsEmpty]: Start isEmpty. Operand 331 states and 411 transitions.
[2021-11-20 05:47:14,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2021-11-20 05:47:14,304 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:14,304 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:14,342 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:14,518 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:14,518 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:14,519 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:14,519 INFO  L85        PathProgramCache]: Analyzing trace with hash -1438130325, now seen corresponding path program 1 times
[2021-11-20 05:47:14,519 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:14,519 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606710888]
[2021-11-20 05:47:14,519 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:14,519 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:14,546 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:14,546 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809537802]
[2021-11-20 05:47:14,547 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:14,547 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:14,547 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:14,548 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:14,566 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-11-20 05:47:14,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:14,872 INFO  L263         TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-20 05:47:14,875 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:15,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-20 05:47:15,013 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:47:15,013 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:15,013 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606710888]
[2021-11-20 05:47:15,013 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:15,014 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809537802]
[2021-11-20 05:47:15,014 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809537802] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:47:15,014 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:47:15,014 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-20 05:47:15,014 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465162206]
[2021-11-20 05:47:15,015 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:15,015 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 05:47:15,015 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:15,016 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 05:47:15,016 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 05:47:15,016 INFO  L87              Difference]: Start difference. First operand 331 states and 411 transitions. Second operand  has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 05:47:15,060 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:15,060 INFO  L93              Difference]: Finished difference Result 613 states and 776 transitions.
[2021-11-20 05:47:15,061 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-11-20 05:47:15,061 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76
[2021-11-20 05:47:15,061 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:15,064 INFO  L225             Difference]: With dead ends: 613
[2021-11-20 05:47:15,064 INFO  L226             Difference]: Without dead ends: 334
[2021-11-20 05:47:15,065 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 05:47:15,065 INFO  L933         BasicCegarLoop]: 169 mSDtfsCounter, 2 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:15,066 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 503 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 05:47:15,067 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 334 states.
[2021-11-20 05:47:15,077 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334.
[2021-11-20 05:47:15,078 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 334 states, 308 states have (on average 1.2207792207792207) internal successors, (376), 322 states have internal predecessors, (376), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22)
[2021-11-20 05:47:15,080 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 417 transitions.
[2021-11-20 05:47:15,081 INFO  L78                 Accepts]: Start accepts. Automaton has 334 states and 417 transitions. Word has length 76
[2021-11-20 05:47:15,081 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:15,081 INFO  L470      AbstractCegarLoop]: Abstraction has 334 states and 417 transitions.
[2021-11-20 05:47:15,081 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 05:47:15,081 INFO  L276                IsEmpty]: Start isEmpty. Operand 334 states and 417 transitions.
[2021-11-20 05:47:15,082 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2021-11-20 05:47:15,082 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:15,082 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:15,117 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:15,303 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:15,303 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:15,304 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:15,304 INFO  L85        PathProgramCache]: Analyzing trace with hash 766935497, now seen corresponding path program 1 times
[2021-11-20 05:47:15,304 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:15,304 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57052066]
[2021-11-20 05:47:15,304 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:15,304 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:15,317 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:15,317 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072643278]
[2021-11-20 05:47:15,317 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:15,317 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:15,317 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:15,318 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:15,328 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-11-20 05:47:15,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:15,708 INFO  L263         TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-11-20 05:47:15,710 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:15,895 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-20 05:47:15,895 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:16,151 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-20 05:47:16,152 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:16,152 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57052066]
[2021-11-20 05:47:16,152 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:16,152 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072643278]
[2021-11-20 05:47:16,152 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072643278] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:47:16,152 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:47:16,152 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2021-11-20 05:47:16,153 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889742581]
[2021-11-20 05:47:16,153 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:47:16,153 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-20 05:47:16,154 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:16,154 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-20 05:47:16,154 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-11-20 05:47:16,158 INFO  L87              Difference]: Start difference. First operand 334 states and 417 transitions. Second operand  has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-20 05:47:16,315 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:16,316 INFO  L93              Difference]: Finished difference Result 627 states and 806 transitions.
[2021-11-20 05:47:16,316 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-11-20 05:47:16,316 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 78
[2021-11-20 05:47:16,317 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:16,319 INFO  L225             Difference]: With dead ends: 627
[2021-11-20 05:47:16,319 INFO  L226             Difference]: Without dead ends: 343
[2021-11-20 05:47:16,320 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132
[2021-11-20 05:47:16,321 INFO  L933         BasicCegarLoop]: 168 mSDtfsCounter, 23 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:16,321 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 500 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:47:16,322 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 343 states.
[2021-11-20 05:47:16,335 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343.
[2021-11-20 05:47:16,336 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 343 states, 316 states have (on average 1.2278481012658229) internal successors, (388), 330 states have internal predecessors, (388), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (25), 10 states have call predecessors, (25), 19 states have call successors, (25)
[2021-11-20 05:47:16,338 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 432 transitions.
[2021-11-20 05:47:16,338 INFO  L78                 Accepts]: Start accepts. Automaton has 343 states and 432 transitions. Word has length 78
[2021-11-20 05:47:16,338 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:16,339 INFO  L470      AbstractCegarLoop]: Abstraction has 343 states and 432 transitions.
[2021-11-20 05:47:16,339 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-20 05:47:16,339 INFO  L276                IsEmpty]: Start isEmpty. Operand 343 states and 432 transitions.
[2021-11-20 05:47:16,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2021-11-20 05:47:16,340 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:16,340 INFO  L514         BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:16,368 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:16,554 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:16,554 INFO  L402      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:16,555 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:16,555 INFO  L85        PathProgramCache]: Analyzing trace with hash -2047753493, now seen corresponding path program 2 times
[2021-11-20 05:47:16,555 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:16,555 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632823011]
[2021-11-20 05:47:16,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:16,556 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:16,567 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:16,568 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924854061]
[2021-11-20 05:47:16,568 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-20 05:47:16,568 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:16,568 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:16,574 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:16,586 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2021-11-20 05:47:16,916 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-20 05:47:16,916 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 05:47:16,920 INFO  L263         TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-11-20 05:47:16,922 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:17,127 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2021-11-20 05:47:17,127 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:17,441 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-11-20 05:47:17,441 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:17,442 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632823011]
[2021-11-20 05:47:17,442 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:17,442 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924854061]
[2021-11-20 05:47:17,442 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [924854061] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:47:17,442 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:47:17,443 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11
[2021-11-20 05:47:17,443 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779684164]
[2021-11-20 05:47:17,443 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:47:17,444 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-11-20 05:47:17,445 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:17,445 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-11-20 05:47:17,445 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2021-11-20 05:47:17,445 INFO  L87              Difference]: Start difference. First operand 343 states and 432 transitions. Second operand  has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:47:17,837 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:17,838 INFO  L93              Difference]: Finished difference Result 675 states and 864 transitions.
[2021-11-20 05:47:17,838 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2021-11-20 05:47:17,839 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82
[2021-11-20 05:47:17,840 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:17,844 INFO  L225             Difference]: With dead ends: 675
[2021-11-20 05:47:17,844 INFO  L226             Difference]: Without dead ends: 340
[2021-11-20 05:47:17,845 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272
[2021-11-20 05:47:17,846 INFO  L933         BasicCegarLoop]: 161 mSDtfsCounter, 150 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:17,847 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 972 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2021-11-20 05:47:17,848 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 340 states.
[2021-11-20 05:47:17,862 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338.
[2021-11-20 05:47:17,863 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 338 states, 311 states have (on average 1.2282958199356913) internal successors, (382), 325 states have internal predecessors, (382), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22)
[2021-11-20 05:47:17,865 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 423 transitions.
[2021-11-20 05:47:17,865 INFO  L78                 Accepts]: Start accepts. Automaton has 338 states and 423 transitions. Word has length 82
[2021-11-20 05:47:17,866 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:17,866 INFO  L470      AbstractCegarLoop]: Abstraction has 338 states and 423 transitions.
[2021-11-20 05:47:17,867 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:47:17,867 INFO  L276                IsEmpty]: Start isEmpty. Operand 338 states and 423 transitions.
[2021-11-20 05:47:17,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2021-11-20 05:47:17,869 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:17,869 INFO  L514         BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:17,879 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:18,075 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:18,075 INFO  L402      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:18,076 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:18,076 INFO  L85        PathProgramCache]: Analyzing trace with hash 2026171115, now seen corresponding path program 3 times
[2021-11-20 05:47:18,076 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:18,076 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555132586]
[2021-11-20 05:47:18,077 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:18,077 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:18,089 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:18,089 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23321192]
[2021-11-20 05:47:18,089 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-20 05:47:18,089 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:18,090 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:18,090 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:18,095 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2021-11-20 05:47:18,300 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-11-20 05:47:18,300 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 05:47:18,302 INFO  L263         TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-11-20 05:47:18,303 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:18,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2021-11-20 05:47:18,511 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:24,204 WARN  L227               SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2021-11-20 05:47:24,913 INFO  L134       CoverageAnalysis]: Checked inductivity of 73 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2021-11-20 05:47:24,914 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:24,914 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555132586]
[2021-11-20 05:47:24,914 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:24,914 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23321192]
[2021-11-20 05:47:24,914 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [23321192] provided 1 perfect and 1 imperfect interpolant sequences
[2021-11-20 05:47:24,915 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-20 05:47:24,915 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8
[2021-11-20 05:47:24,915 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956956328]
[2021-11-20 05:47:24,915 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:24,916 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 05:47:24,916 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:24,916 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 05:47:24,916 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2021-11-20 05:47:24,917 INFO  L87              Difference]: Start difference. First operand 338 states and 423 transitions. Second operand  has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 05:47:24,993 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:24,993 INFO  L93              Difference]: Finished difference Result 338 states and 423 transitions.
[2021-11-20 05:47:24,994 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-11-20 05:47:24,994 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86
[2021-11-20 05:47:24,994 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:24,997 INFO  L225             Difference]: With dead ends: 338
[2021-11-20 05:47:24,997 INFO  L226             Difference]: Without dead ends: 337
[2021-11-20 05:47:24,997 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2021-11-20 05:47:24,998 INFO  L933         BasicCegarLoop]: 158 mSDtfsCounter, 231 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:24,998 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 386 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:47:24,999 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 337 states.
[2021-11-20 05:47:25,012 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337.
[2021-11-20 05:47:25,013 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 337 states, 311 states have (on average 1.2218649517684887) internal successors, (380), 324 states have internal predecessors, (380), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22)
[2021-11-20 05:47:25,015 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 421 transitions.
[2021-11-20 05:47:25,015 INFO  L78                 Accepts]: Start accepts. Automaton has 337 states and 421 transitions. Word has length 86
[2021-11-20 05:47:25,016 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:25,016 INFO  L470      AbstractCegarLoop]: Abstraction has 337 states and 421 transitions.
[2021-11-20 05:47:25,016 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 05:47:25,016 INFO  L276                IsEmpty]: Start isEmpty. Operand 337 states and 421 transitions.
[2021-11-20 05:47:25,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 192
[2021-11-20 05:47:25,018 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:25,019 INFO  L514         BasicCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:25,030 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:25,224 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2021-11-20 05:47:25,225 INFO  L402      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:25,225 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:25,225 INFO  L85        PathProgramCache]: Analyzing trace with hash 774103707, now seen corresponding path program 1 times
[2021-11-20 05:47:25,225 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:25,226 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516896057]
[2021-11-20 05:47:25,226 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:25,226 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:25,248 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:25,249 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267623610]
[2021-11-20 05:47:25,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:25,249 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:25,249 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:25,251 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:25,251 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2021-11-20 05:47:25,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:25,452 INFO  L263         TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-20 05:47:25,456 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:25,870 INFO  L134       CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2021-11-20 05:47:25,870 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:26,360 INFO  L134       CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2021-11-20 05:47:26,360 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:26,360 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516896057]
[2021-11-20 05:47:26,361 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:26,361 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267623610]
[2021-11-20 05:47:26,361 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267623610] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:47:26,361 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:47:26,361 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2021-11-20 05:47:26,362 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310552075]
[2021-11-20 05:47:26,362 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:47:26,363 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-11-20 05:47:26,363 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:26,363 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-11-20 05:47:26,363 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182
[2021-11-20 05:47:26,364 INFO  L87              Difference]: Start difference. First operand 337 states and 421 transitions. Second operand  has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:47:26,541 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:26,541 INFO  L93              Difference]: Finished difference Result 460 states and 586 transitions.
[2021-11-20 05:47:26,541 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-11-20 05:47:26,542 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 191
[2021-11-20 05:47:26,542 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:26,546 INFO  L225             Difference]: With dead ends: 460
[2021-11-20 05:47:26,546 INFO  L226             Difference]: Without dead ends: 459
[2021-11-20 05:47:26,546 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306
[2021-11-20 05:47:26,547 INFO  L933         BasicCegarLoop]: 206 mSDtfsCounter, 411 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:26,548 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 825 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:47:26,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 459 states.
[2021-11-20 05:47:26,566 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 336.
[2021-11-20 05:47:26,567 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 336 states, 311 states have (on average 1.2186495176848875) internal successors, (379), 323 states have internal predecessors, (379), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22)
[2021-11-20 05:47:26,570 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 420 transitions.
[2021-11-20 05:47:26,571 INFO  L78                 Accepts]: Start accepts. Automaton has 336 states and 420 transitions. Word has length 191
[2021-11-20 05:47:26,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:26,571 INFO  L470      AbstractCegarLoop]: Abstraction has 336 states and 420 transitions.
[2021-11-20 05:47:26,572 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:47:26,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 336 states and 420 transitions.
[2021-11-20 05:47:26,576 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2021-11-20 05:47:26,576 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:26,576 INFO  L514         BasicCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:26,614 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:26,790 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:26,790 INFO  L402      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:26,790 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:26,791 INFO  L85        PathProgramCache]: Analyzing trace with hash -160701509, now seen corresponding path program 1 times
[2021-11-20 05:47:26,791 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:26,791 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814643141]
[2021-11-20 05:47:26,791 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:26,791 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:26,804 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:26,805 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262177191]
[2021-11-20 05:47:26,805 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:26,805 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:26,805 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:26,806 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:26,838 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2021-11-20 05:47:27,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:27,026 INFO  L263         TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-11-20 05:47:27,030 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:27,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2021-11-20 05:47:27,485 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:27,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2021-11-20 05:47:27,952 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:27,952 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814643141]
[2021-11-20 05:47:27,952 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:27,953 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262177191]
[2021-11-20 05:47:27,953 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [262177191] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:47:27,953 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:47:27,953 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2021-11-20 05:47:27,953 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059403874]
[2021-11-20 05:47:27,954 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:47:27,954 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2021-11-20 05:47:27,955 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:27,955 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-11-20 05:47:27,955 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240
[2021-11-20 05:47:27,956 INFO  L87              Difference]: Start difference. First operand 336 states and 420 transitions. Second operand  has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:47:28,189 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:28,190 INFO  L93              Difference]: Finished difference Result 745 states and 932 transitions.
[2021-11-20 05:47:28,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2021-11-20 05:47:28,190 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 196
[2021-11-20 05:47:28,191 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:28,197 INFO  L225             Difference]: With dead ends: 745
[2021-11-20 05:47:28,198 INFO  L226             Difference]: Without dead ends: 712
[2021-11-20 05:47:28,198 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462
[2021-11-20 05:47:28,199 INFO  L933         BasicCegarLoop]: 206 mSDtfsCounter, 924 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:28,200 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 1894 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:47:28,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 712 states.
[2021-11-20 05:47:28,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712.
[2021-11-20 05:47:28,235 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 712 states, 675 states have (on average 1.1955555555555555) internal successors, (807), 687 states have internal predecessors, (807), 31 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (38), 22 states have call predecessors, (38), 31 states have call successors, (38)
[2021-11-20 05:47:28,239 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 876 transitions.
[2021-11-20 05:47:28,240 INFO  L78                 Accepts]: Start accepts. Automaton has 712 states and 876 transitions. Word has length 196
[2021-11-20 05:47:28,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:28,240 INFO  L470      AbstractCegarLoop]: Abstraction has 712 states and 876 transitions.
[2021-11-20 05:47:28,241 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:47:28,241 INFO  L276                IsEmpty]: Start isEmpty. Operand 712 states and 876 transitions.
[2021-11-20 05:47:28,249 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 417
[2021-11-20 05:47:28,250 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:28,250 INFO  L514         BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:28,289 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:28,478 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-11-20 05:47:28,479 INFO  L402      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:28,479 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:28,479 INFO  L85        PathProgramCache]: Analyzing trace with hash 1264559611, now seen corresponding path program 2 times
[2021-11-20 05:47:28,480 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:28,480 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435855771]
[2021-11-20 05:47:28,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:28,480 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:28,512 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:28,512 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463801218]
[2021-11-20 05:47:28,512 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-20 05:47:28,513 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:28,513 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:28,514 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:28,536 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2021-11-20 05:47:28,668 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2021-11-20 05:47:28,669 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 05:47:28,670 INFO  L263         TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 05:47:28,678 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:29,727 INFO  L134       CoverageAnalysis]: Checked inductivity of 1219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked.
[2021-11-20 05:47:29,728 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:47:29,728 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:29,728 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435855771]
[2021-11-20 05:47:29,728 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:29,728 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463801218]
[2021-11-20 05:47:29,728 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463801218] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:47:29,728 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:47:29,729 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-20 05:47:29,729 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108865363]
[2021-11-20 05:47:29,729 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:29,730 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 05:47:29,730 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:29,730 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 05:47:29,730 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 05:47:29,730 INFO  L87              Difference]: Start difference. First operand 712 states and 876 transitions. Second operand  has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 05:47:29,801 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:29,801 INFO  L93              Difference]: Finished difference Result 738 states and 922 transitions.
[2021-11-20 05:47:29,801 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-11-20 05:47:29,802 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 416
[2021-11-20 05:47:29,803 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:29,807 INFO  L225             Difference]: With dead ends: 738
[2021-11-20 05:47:29,808 INFO  L226             Difference]: Without dead ends: 737
[2021-11-20 05:47:29,808 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 05:47:29,809 INFO  L933         BasicCegarLoop]: 163 mSDtfsCounter, 65 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:29,809 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 364 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 05:47:29,811 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 737 states.
[2021-11-20 05:47:29,839 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 714.
[2021-11-20 05:47:29,840 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 714 states, 677 states have (on average 1.1949778434268834) internal successors, (809), 689 states have internal predecessors, (809), 31 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (38), 22 states have call predecessors, (38), 31 states have call successors, (38)
[2021-11-20 05:47:29,845 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 878 transitions.
[2021-11-20 05:47:29,845 INFO  L78                 Accepts]: Start accepts. Automaton has 714 states and 878 transitions. Word has length 416
[2021-11-20 05:47:29,846 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:29,846 INFO  L470      AbstractCegarLoop]: Abstraction has 714 states and 878 transitions.
[2021-11-20 05:47:29,846 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 05:47:29,847 INFO  L276                IsEmpty]: Start isEmpty. Operand 714 states and 878 transitions.
[2021-11-20 05:47:29,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 418
[2021-11-20 05:47:29,855 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:29,856 INFO  L514         BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:29,893 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:30,082 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2021-11-20 05:47:30,082 INFO  L402      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:30,083 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:30,083 INFO  L85        PathProgramCache]: Analyzing trace with hash 546642708, now seen corresponding path program 1 times
[2021-11-20 05:47:30,083 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:30,083 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654183022]
[2021-11-20 05:47:30,083 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:30,083 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:30,110 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:30,111 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561834666]
[2021-11-20 05:47:30,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:30,111 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:30,112 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:30,112 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:30,143 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2021-11-20 05:47:30,497 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:30,506 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 16 conjunts are in the unsatisfiable core
[2021-11-20 05:47:30,523 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:31,623 INFO  L134       CoverageAnalysis]: Checked inductivity of 1219 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2021-11-20 05:47:31,623 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:32,569 INFO  L134       CoverageAnalysis]: Checked inductivity of 1219 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2021-11-20 05:47:32,569 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:32,570 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654183022]
[2021-11-20 05:47:32,570 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:32,570 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561834666]
[2021-11-20 05:47:32,570 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561834666] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:47:32,570 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:47:32,571 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21
[2021-11-20 05:47:32,571 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496100888]
[2021-11-20 05:47:32,571 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:47:32,572 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2021-11-20 05:47:32,573 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:32,573 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-11-20 05:47:32,574 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420
[2021-11-20 05:47:32,574 INFO  L87              Difference]: Start difference. First operand 714 states and 878 transitions. Second operand  has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:47:32,930 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:32,930 INFO  L93              Difference]: Finished difference Result 1031 states and 1277 transitions.
[2021-11-20 05:47:32,930 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2021-11-20 05:47:32,931 INFO  L78                 Accepts]: Start accepts. Automaton has  has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 417
[2021-11-20 05:47:32,932 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:32,937 INFO  L225             Difference]: With dead ends: 1031
[2021-11-20 05:47:32,938 INFO  L226             Difference]: Without dead ends: 996
[2021-11-20 05:47:32,940 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 812 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870
[2021-11-20 05:47:32,942 INFO  L933         BasicCegarLoop]: 186 mSDtfsCounter, 1279 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:32,942 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 1536 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2021-11-20 05:47:32,944 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 996 states.
[2021-11-20 05:47:32,983 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996.
[2021-11-20 05:47:32,985 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 996 states, 950 states have (on average 1.1894736842105262) internal successors, (1130), 962 states have internal predecessors, (1130), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50)
[2021-11-20 05:47:32,991 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1220 transitions.
[2021-11-20 05:47:32,991 INFO  L78                 Accepts]: Start accepts. Automaton has 996 states and 1220 transitions. Word has length 417
[2021-11-20 05:47:32,992 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:32,992 INFO  L470      AbstractCegarLoop]: Abstraction has 996 states and 1220 transitions.
[2021-11-20 05:47:32,993 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:47:32,993 INFO  L276                IsEmpty]: Start isEmpty. Operand 996 states and 1220 transitions.
[2021-11-20 05:47:33,007 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 583
[2021-11-20 05:47:33,007 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:33,008 INFO  L514         BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:33,042 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:33,230 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:33,230 INFO  L402      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:33,230 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:33,231 INFO  L85        PathProgramCache]: Analyzing trace with hash -315517419, now seen corresponding path program 2 times
[2021-11-20 05:47:33,231 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:33,231 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312506077]
[2021-11-20 05:47:33,231 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:33,231 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:33,266 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:33,266 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270733805]
[2021-11-20 05:47:33,266 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-20 05:47:33,266 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:33,267 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:33,267 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:33,282 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2021-11-20 05:47:33,409 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2021-11-20 05:47:33,409 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 05:47:33,410 INFO  L263         TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 05:47:33,424 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:34,768 INFO  L134       CoverageAnalysis]: Checked inductivity of 2536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked.
[2021-11-20 05:47:34,769 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:47:34,769 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:34,769 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312506077]
[2021-11-20 05:47:34,769 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:34,769 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270733805]
[2021-11-20 05:47:34,770 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [270733805] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:47:34,770 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:47:34,770 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-20 05:47:34,770 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218338197]
[2021-11-20 05:47:34,771 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:34,771 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 05:47:34,772 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:34,772 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 05:47:34,772 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 05:47:34,772 INFO  L87              Difference]: Start difference. First operand 996 states and 1220 transitions. Second operand  has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 05:47:34,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:34,847 INFO  L93              Difference]: Finished difference Result 996 states and 1220 transitions.
[2021-11-20 05:47:34,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-11-20 05:47:34,848 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 582
[2021-11-20 05:47:34,849 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:34,855 INFO  L225             Difference]: With dead ends: 996
[2021-11-20 05:47:34,855 INFO  L226             Difference]: Without dead ends: 995
[2021-11-20 05:47:34,856 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 05:47:34,857 INFO  L933         BasicCegarLoop]: 142 mSDtfsCounter, 100 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:34,857 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 272 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 05:47:34,859 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 995 states.
[2021-11-20 05:47:34,894 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995.
[2021-11-20 05:47:34,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 995 states, 950 states have (on average 1.188421052631579) internal successors, (1129), 961 states have internal predecessors, (1129), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50)
[2021-11-20 05:47:34,901 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1219 transitions.
[2021-11-20 05:47:34,902 INFO  L78                 Accepts]: Start accepts. Automaton has 995 states and 1219 transitions. Word has length 582
[2021-11-20 05:47:34,903 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:34,903 INFO  L470      AbstractCegarLoop]: Abstraction has 995 states and 1219 transitions.
[2021-11-20 05:47:34,903 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 05:47:34,903 INFO  L276                IsEmpty]: Start isEmpty. Operand 995 states and 1219 transitions.
[2021-11-20 05:47:34,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 594
[2021-11-20 05:47:34,921 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:34,922 INFO  L514         BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:34,962 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:35,138 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:35,138 INFO  L402      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:35,139 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:35,139 INFO  L85        PathProgramCache]: Analyzing trace with hash -860666822, now seen corresponding path program 1 times
[2021-11-20 05:47:35,139 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:35,139 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506520705]
[2021-11-20 05:47:35,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:35,139 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:35,167 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:35,167 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41670884]
[2021-11-20 05:47:35,167 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:35,168 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:35,168 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:35,169 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:35,180 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2021-11-20 05:47:35,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:35,604 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-11-20 05:47:35,615 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:36,890 INFO  L134       CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked.
[2021-11-20 05:47:36,891 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:38,097 INFO  L134       CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked.
[2021-11-20 05:47:38,097 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:38,097 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506520705]
[2021-11-20 05:47:38,097 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:38,098 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41670884]
[2021-11-20 05:47:38,098 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [41670884] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:47:38,098 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:47:38,098 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9
[2021-11-20 05:47:38,099 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935314627]
[2021-11-20 05:47:38,099 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:47:38,101 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-20 05:47:38,101 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:38,101 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-20 05:47:38,102 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2021-11-20 05:47:38,102 INFO  L87              Difference]: Start difference. First operand 995 states and 1219 transitions. Second operand  has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2021-11-20 05:47:38,493 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:38,493 INFO  L93              Difference]: Finished difference Result 1087 states and 1370 transitions.
[2021-11-20 05:47:38,494 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2021-11-20 05:47:38,494 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 593
[2021-11-20 05:47:38,495 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:38,502 INFO  L225             Difference]: With dead ends: 1087
[2021-11-20 05:47:38,502 INFO  L226             Difference]: Without dead ends: 1086
[2021-11-20 05:47:38,503 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272
[2021-11-20 05:47:38,504 INFO  L933         BasicCegarLoop]: 153 mSDtfsCounter, 545 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:38,504 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 406 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2021-11-20 05:47:38,506 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1086 states.
[2021-11-20 05:47:38,554 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1085.
[2021-11-20 05:47:38,557 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1085 states, 1007 states have (on average 1.2075471698113207) internal successors, (1216), 1048 states have internal predecessors, (1216), 70 states have call successors, (70), 6 states have call predecessors, (70), 7 states have return successors, (80), 34 states have call predecessors, (80), 70 states have call successors, (80)
[2021-11-20 05:47:38,563 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1366 transitions.
[2021-11-20 05:47:38,563 INFO  L78                 Accepts]: Start accepts. Automaton has 1085 states and 1366 transitions. Word has length 593
[2021-11-20 05:47:38,564 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:38,564 INFO  L470      AbstractCegarLoop]: Abstraction has 1085 states and 1366 transitions.
[2021-11-20 05:47:38,564 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2021-11-20 05:47:38,565 INFO  L276                IsEmpty]: Start isEmpty. Operand 1085 states and 1366 transitions.
[2021-11-20 05:47:38,572 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 630
[2021-11-20 05:47:38,572 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:38,573 INFO  L514         BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:38,616 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:38,798 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2021-11-20 05:47:38,798 INFO  L402      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:38,798 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:38,799 INFO  L85        PathProgramCache]: Analyzing trace with hash 174120026, now seen corresponding path program 2 times
[2021-11-20 05:47:38,799 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:38,799 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786975019]
[2021-11-20 05:47:38,799 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:38,799 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:38,832 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:38,832 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736245888]
[2021-11-20 05:47:38,833 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-20 05:47:38,833 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:38,833 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:38,834 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:38,856 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2021-11-20 05:47:39,260 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-20 05:47:39,260 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 05:47:39,270 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-11-20 05:47:39,280 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:40,630 INFO  L134       CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked.
[2021-11-20 05:47:40,630 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:42,013 INFO  L134       CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked.
[2021-11-20 05:47:42,014 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:42,014 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786975019]
[2021-11-20 05:47:42,014 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:42,014 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736245888]
[2021-11-20 05:47:42,014 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736245888] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:47:42,014 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:47:42,015 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21
[2021-11-20 05:47:42,015 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007687699]
[2021-11-20 05:47:42,015 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:47:42,016 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2021-11-20 05:47:42,016 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:42,017 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2021-11-20 05:47:42,017 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462
[2021-11-20 05:47:42,018 INFO  L87              Difference]: Start difference. First operand 1085 states and 1366 transitions. Second operand  has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12)
[2021-11-20 05:47:43,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:43,015 INFO  L93              Difference]: Finished difference Result 1267 states and 1667 transitions.
[2021-11-20 05:47:43,016 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2021-11-20 05:47:43,016 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 629
[2021-11-20 05:47:43,017 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:43,025 INFO  L225             Difference]: With dead ends: 1267
[2021-11-20 05:47:43,026 INFO  L226             Difference]: Without dead ends: 1266
[2021-11-20 05:47:43,027 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 1275 GetRequests, 1236 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640
[2021-11-20 05:47:43,028 INFO  L933         BasicCegarLoop]: 153 mSDtfsCounter, 1127 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:43,028 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 867 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2021-11-20 05:47:43,030 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1266 states.
[2021-11-20 05:47:43,089 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1265.
[2021-11-20 05:47:43,092 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1265 states, 1121 states have (on average 1.239964317573595) internal successors, (1390), 1222 states have internal predecessors, (1390), 130 states have call successors, (130), 12 states have call predecessors, (130), 13 states have return successors, (140), 40 states have call predecessors, (140), 130 states have call successors, (140)
[2021-11-20 05:47:43,128 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1660 transitions.
[2021-11-20 05:47:43,128 INFO  L78                 Accepts]: Start accepts. Automaton has 1265 states and 1660 transitions. Word has length 629
[2021-11-20 05:47:43,129 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:43,129 INFO  L470      AbstractCegarLoop]: Abstraction has 1265 states and 1660 transitions.
[2021-11-20 05:47:43,130 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12)
[2021-11-20 05:47:43,130 INFO  L276                IsEmpty]: Start isEmpty. Operand 1265 states and 1660 transitions.
[2021-11-20 05:47:43,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 702
[2021-11-20 05:47:43,141 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:43,141 INFO  L514         BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:43,182 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:43,358 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2021-11-20 05:47:43,358 INFO  L402      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:43,359 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:43,359 INFO  L85        PathProgramCache]: Analyzing trace with hash 460283034, now seen corresponding path program 3 times
[2021-11-20 05:47:43,359 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:43,359 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040429268]
[2021-11-20 05:47:43,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:43,360 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:43,390 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:43,390 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660798274]
[2021-11-20 05:47:43,390 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-20 05:47:43,391 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:43,391 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:43,392 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:43,393 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2021-11-20 05:47:43,570 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-11-20 05:47:43,570 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 05:47:43,572 INFO  L263         TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-11-20 05:47:43,583 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:44,587 INFO  L134       CoverageAnalysis]: Checked inductivity of 3096 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 2995 trivial. 0 not checked.
[2021-11-20 05:47:44,587 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:47:44,588 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:44,588 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040429268]
[2021-11-20 05:47:44,588 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:44,588 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660798274]
[2021-11-20 05:47:44,589 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [660798274] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:47:44,589 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:47:44,589 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-20 05:47:44,590 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420916601]
[2021-11-20 05:47:44,590 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:47:44,592 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-20 05:47:44,592 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:44,593 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-20 05:47:44,593 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-20 05:47:44,594 INFO  L87              Difference]: Start difference. First operand 1265 states and 1660 transitions. Second operand  has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:47:44,819 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:44,819 INFO  L93              Difference]: Finished difference Result 1582 states and 2147 transitions.
[2021-11-20 05:47:44,819 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-11-20 05:47:44,820 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 701
[2021-11-20 05:47:44,821 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:44,832 INFO  L225             Difference]: With dead ends: 1582
[2021-11-20 05:47:44,832 INFO  L226             Difference]: Without dead ends: 1581
[2021-11-20 05:47:44,834 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-11-20 05:47:44,834 INFO  L933         BasicCegarLoop]: 144 mSDtfsCounter, 264 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:44,835 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 320 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:47:44,837 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1581 states.
[2021-11-20 05:47:44,919 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1508.
[2021-11-20 05:47:44,923 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1508 states, 1292 states have (on average 1.2778637770897834) internal successors, (1651), 1447 states have internal predecessors, (1651), 193 states have call successors, (193), 21 states have call predecessors, (193), 22 states have return successors, (203), 49 states have call predecessors, (203), 193 states have call successors, (203)
[2021-11-20 05:47:44,931 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2047 transitions.
[2021-11-20 05:47:44,931 INFO  L78                 Accepts]: Start accepts. Automaton has 1508 states and 2047 transitions. Word has length 701
[2021-11-20 05:47:44,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:44,933 INFO  L470      AbstractCegarLoop]: Abstraction has 1508 states and 2047 transitions.
[2021-11-20 05:47:44,933 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:47:44,933 INFO  L276                IsEmpty]: Start isEmpty. Operand 1508 states and 2047 transitions.
[2021-11-20 05:47:44,943 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 703
[2021-11-20 05:47:44,944 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:44,944 INFO  L514         BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:44,982 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:45,158 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:45,158 INFO  L402      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:45,158 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:45,159 INFO  L85        PathProgramCache]: Analyzing trace with hash -1867830575, now seen corresponding path program 1 times
[2021-11-20 05:47:45,159 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:45,159 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361653082]
[2021-11-20 05:47:45,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:45,159 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:45,190 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:45,190 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616574877]
[2021-11-20 05:47:45,190 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:45,191 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:45,191 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:45,192 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:45,214 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2021-11-20 05:47:45,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:47:45,657 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-11-20 05:47:45,667 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:47,306 INFO  L134       CoverageAnalysis]: Checked inductivity of 3087 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked.
[2021-11-20 05:47:47,306 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:49,036 INFO  L134       CoverageAnalysis]: Checked inductivity of 3087 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 2716 trivial. 0 not checked.
[2021-11-20 05:47:49,036 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:49,036 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361653082]
[2021-11-20 05:47:49,037 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:49,037 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616574877]
[2021-11-20 05:47:49,037 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [616574877] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:47:49,037 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:47:49,038 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45
[2021-11-20 05:47:49,038 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15232800]
[2021-11-20 05:47:49,038 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:47:49,039 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 46 states
[2021-11-20 05:47:49,040 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:49,040 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2021-11-20 05:47:49,041 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070
[2021-11-20 05:47:49,042 INFO  L87              Difference]: Start difference. First operand 1508 states and 2047 transitions. Second operand  has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24)
[2021-11-20 05:47:52,239 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:47:52,239 INFO  L93              Difference]: Finished difference Result 2225 states and 3215 transitions.
[2021-11-20 05:47:52,240 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. 
[2021-11-20 05:47:52,241 INFO  L78                 Accepts]: Start accepts. Automaton has  has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) Word has length 702
[2021-11-20 05:47:52,242 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:47:52,258 INFO  L225             Difference]: With dead ends: 2225
[2021-11-20 05:47:52,258 INFO  L226             Difference]: Without dead ends: 2224
[2021-11-20 05:47:52,263 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 1445 GetRequests, 1358 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832
[2021-11-20 05:47:52,264 INFO  L933         BasicCegarLoop]: 153 mSDtfsCounter, 2646 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 3644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2021-11-20 05:47:52,265 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2656 Valid, 1853 Invalid, 3644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2021-11-20 05:47:52,274 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2224 states.
[2021-11-20 05:47:52,458 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2204.
[2021-11-20 05:47:52,464 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2204 states, 1748 states have (on average 1.3426773455377574) internal successors, (2347), 2107 states have internal predecessors, (2347), 409 states have call successors, (409), 45 states have call predecessors, (409), 46 states have return successors, (419), 73 states have call predecessors, (419), 409 states have call successors, (419)
[2021-11-20 05:47:52,479 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3175 transitions.
[2021-11-20 05:47:52,479 INFO  L78                 Accepts]: Start accepts. Automaton has 2204 states and 3175 transitions. Word has length 702
[2021-11-20 05:47:52,481 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:47:52,481 INFO  L470      AbstractCegarLoop]: Abstraction has 2204 states and 3175 transitions.
[2021-11-20 05:47:52,481 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24)
[2021-11-20 05:47:52,481 INFO  L276                IsEmpty]: Start isEmpty. Operand 2204 states and 3175 transitions.
[2021-11-20 05:47:52,500 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 847
[2021-11-20 05:47:52,500 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:47:52,501 INFO  L514         BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:47:52,539 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2021-11-20 05:47:52,726 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19
[2021-11-20 05:47:52,726 INFO  L402      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:47:52,726 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:47:52,727 INFO  L85        PathProgramCache]: Analyzing trace with hash 1109981777, now seen corresponding path program 2 times
[2021-11-20 05:47:52,727 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:47:52,727 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270244998]
[2021-11-20 05:47:52,727 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:47:52,727 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:47:52,753 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:47:52,753 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864942089]
[2021-11-20 05:47:52,754 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-20 05:47:52,754 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:47:52,754 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:47:52,755 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:47:52,761 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2021-11-20 05:47:53,240 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-20 05:47:53,241 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 05:47:53,253 INFO  L263         TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 47 conjunts are in the unsatisfiable core
[2021-11-20 05:47:53,266 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:47:55,735 INFO  L134       CoverageAnalysis]: Checked inductivity of 5331 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked.
[2021-11-20 05:47:55,736 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:47:58,979 INFO  L134       CoverageAnalysis]: Checked inductivity of 5331 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 3460 trivial. 0 not checked.
[2021-11-20 05:47:58,979 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:47:58,979 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270244998]
[2021-11-20 05:47:58,979 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:47:58,979 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864942089]
[2021-11-20 05:47:58,980 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864942089] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:47:58,980 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:47:58,980 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93
[2021-11-20 05:47:58,981 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126950898]
[2021-11-20 05:47:58,981 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:47:58,983 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 94 states
[2021-11-20 05:47:58,983 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:47:58,984 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants.
[2021-11-20 05:47:58,987 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742
[2021-11-20 05:47:58,988 INFO  L87              Difference]: Start difference. First operand 2204 states and 3175 transitions. Second operand  has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48)
[2021-11-20 05:48:08,258 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:48:08,258 INFO  L93              Difference]: Finished difference Result 3617 states and 5483 transitions.
[2021-11-20 05:48:08,259 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. 
[2021-11-20 05:48:08,259 INFO  L78                 Accepts]: Start accepts. Automaton has  has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) Word has length 846
[2021-11-20 05:48:08,261 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:48:08,287 INFO  L225             Difference]: With dead ends: 3617
[2021-11-20 05:48:08,287 INFO  L226             Difference]: Without dead ends: 3616
[2021-11-20 05:48:08,299 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 1781 GetRequests, 1598 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040
[2021-11-20 05:48:08,300 INFO  L933         BasicCegarLoop]: 153 mSDtfsCounter, 9000 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 4596 mSolverCounterSat, 5097 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9010 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 9693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5097 IncrementalHoareTripleChecker+Valid, 4596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time
[2021-11-20 05:48:08,301 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9010 Valid, 2265 Invalid, 9693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5097 Valid, 4596 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time]
[2021-11-20 05:48:08,305 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3616 states.
[2021-11-20 05:48:08,600 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3596.
[2021-11-20 05:48:08,610 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3596 states, 2660 states have (on average 1.405639097744361) internal successors, (3739), 3427 states have internal predecessors, (3739), 841 states have call successors, (841), 93 states have call predecessors, (841), 94 states have return successors, (851), 121 states have call predecessors, (851), 841 states have call successors, (851)
[2021-11-20 05:48:08,630 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5431 transitions.
[2021-11-20 05:48:08,631 INFO  L78                 Accepts]: Start accepts. Automaton has 3596 states and 5431 transitions. Word has length 846
[2021-11-20 05:48:08,632 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:48:08,632 INFO  L470      AbstractCegarLoop]: Abstraction has 3596 states and 5431 transitions.
[2021-11-20 05:48:08,633 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48)
[2021-11-20 05:48:08,633 INFO  L276                IsEmpty]: Start isEmpty. Operand 3596 states and 5431 transitions.
[2021-11-20 05:48:08,662 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1135
[2021-11-20 05:48:08,663 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:48:08,663 INFO  L514         BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:48:08,707 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2021-11-20 05:48:08,886 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:48:08,886 INFO  L402      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:48:08,886 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:48:08,887 INFO  L85        PathProgramCache]: Analyzing trace with hash 1846516049, now seen corresponding path program 3 times
[2021-11-20 05:48:08,887 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:48:08,887 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668194696]
[2021-11-20 05:48:08,887 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:48:08,887 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:48:08,927 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:48:08,927 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168881143]
[2021-11-20 05:48:08,928 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-20 05:48:08,928 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:48:08,928 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:48:08,929 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:48:08,950 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2021-11-20 05:48:09,165 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-11-20 05:48:09,165 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 05:48:09,168 INFO  L263         TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-20 05:48:09,182 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:48:10,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 15003 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 14551 trivial. 0 not checked.
[2021-11-20 05:48:10,694 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:48:10,695 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:48:10,695 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668194696]
[2021-11-20 05:48:10,695 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:48:10,695 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168881143]
[2021-11-20 05:48:10,695 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168881143] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:48:10,696 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:48:10,696 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-20 05:48:10,696 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818609816]
[2021-11-20 05:48:10,696 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:48:10,697 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 05:48:10,698 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:48:10,698 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 05:48:10,698 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-11-20 05:48:10,699 INFO  L87              Difference]: Start difference. First operand 3596 states and 5431 transitions. Second operand  has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:48:11,256 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:48:11,258 INFO  L93              Difference]: Finished difference Result 6471 states and 9917 transitions.
[2021-11-20 05:48:11,258 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-11-20 05:48:11,259 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1134
[2021-11-20 05:48:11,260 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:48:11,344 INFO  L225             Difference]: With dead ends: 6471
[2021-11-20 05:48:11,344 INFO  L226             Difference]: Without dead ends: 6470
[2021-11-20 05:48:11,347 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110
[2021-11-20 05:48:11,348 INFO  L933         BasicCegarLoop]: 141 mSDtfsCounter, 179 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:48:11,348 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 413 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:48:11,357 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6470 states.
[2021-11-20 05:48:11,810 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6007.
[2021-11-20 05:48:11,828 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6007 states, 4367 states have (on average 1.4531715136249141) internal successors, (6346), 5659 states have internal predecessors, (6346), 1456 states have call successors, (1456), 182 states have call predecessors, (1456), 183 states have return successors, (1466), 210 states have call predecessors, (1466), 1456 states have call successors, (1466)
[2021-11-20 05:48:11,857 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6007 states to 6007 states and 9268 transitions.
[2021-11-20 05:48:11,859 INFO  L78                 Accepts]: Start accepts. Automaton has 6007 states and 9268 transitions. Word has length 1134
[2021-11-20 05:48:11,861 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:48:11,861 INFO  L470      AbstractCegarLoop]: Abstraction has 6007 states and 9268 transitions.
[2021-11-20 05:48:11,862 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-20 05:48:11,862 INFO  L276                IsEmpty]: Start isEmpty. Operand 6007 states and 9268 transitions.
[2021-11-20 05:48:11,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1137
[2021-11-20 05:48:11,948 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:48:11,948 INFO  L514         BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:48:11,983 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2021-11-20 05:48:12,174 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:48:12,174 INFO  L402      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:48:12,175 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:48:12,175 INFO  L85        PathProgramCache]: Analyzing trace with hash -919840081, now seen corresponding path program 1 times
[2021-11-20 05:48:12,175 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:48:12,175 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632669901]
[2021-11-20 05:48:12,175 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:48:12,176 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:48:12,220 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:48:12,220 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017258965]
[2021-11-20 05:48:12,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:48:12,220 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:48:12,221 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:48:12,222 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:48:12,242 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2021-11-20 05:48:12,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:48:12,885 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3247 conjuncts, 95 conjunts are in the unsatisfiable core
[2021-11-20 05:48:12,906 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:48:17,508 INFO  L134       CoverageAnalysis]: Checked inductivity of 14960 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked.
[2021-11-20 05:48:17,509 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:48:25,301 INFO  L134       CoverageAnalysis]: Checked inductivity of 14960 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 6676 trivial. 0 not checked.
[2021-11-20 05:48:25,302 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:48:25,302 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632669901]
[2021-11-20 05:48:25,302 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:48:25,302 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017258965]
[2021-11-20 05:48:25,302 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017258965] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:48:25,302 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:48:25,303 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189
[2021-11-20 05:48:25,303 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425320491]
[2021-11-20 05:48:25,303 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:48:25,305 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 190 states
[2021-11-20 05:48:25,306 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:48:25,308 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants.
[2021-11-20 05:48:25,319 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910
[2021-11-20 05:48:25,320 INFO  L87              Difference]: Start difference. First operand 6007 states and 9268 transitions. Second operand  has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96)
[2021-11-20 05:49:03,306 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:49:03,306 INFO  L93              Difference]: Finished difference Result 11439 states and 18032 transitions.
[2021-11-20 05:49:03,306 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. 
[2021-11-20 05:49:03,307 INFO  L78                 Accepts]: Start accepts. Automaton has  has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) Word has length 1136
[2021-11-20 05:49:03,308 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:49:03,380 INFO  L225             Difference]: With dead ends: 11439
[2021-11-20 05:49:03,380 INFO  L226             Difference]: Without dead ends: 11438
[2021-11-20 05:49:03,398 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2457 GetRequests, 2082 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752
[2021-11-20 05:49:03,399 INFO  L933         BasicCegarLoop]: 153 mSDtfsCounter, 20603 mSDsluCounter, 2958 mSDsCounter, 0 mSdLazyCounter, 10290 mSolverCounterSat, 12073 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20613 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 22363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12073 IncrementalHoareTripleChecker+Valid, 10290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time
[2021-11-20 05:49:03,400 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [20613 Valid, 3111 Invalid, 22363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12073 Valid, 10290 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time]
[2021-11-20 05:49:03,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11438 states.
[2021-11-20 05:49:04,230 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11438 to 11383.
[2021-11-20 05:49:04,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11383 states, 8015 states have (on average 1.48646288209607) internal successors, (11914), 10699 states have internal predecessors, (11914), 2992 states have call successors, (2992), 374 states have call predecessors, (2992), 375 states have return successors, (3002), 402 states have call predecessors, (3002), 2992 states have call successors, (3002)
[2021-11-20 05:49:04,284 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11383 states to 11383 states and 17908 transitions.
[2021-11-20 05:49:04,284 INFO  L78                 Accepts]: Start accepts. Automaton has 11383 states and 17908 transitions. Word has length 1136
[2021-11-20 05:49:04,286 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:49:04,286 INFO  L470      AbstractCegarLoop]: Abstraction has 11383 states and 17908 transitions.
[2021-11-20 05:49:04,287 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96)
[2021-11-20 05:49:04,287 INFO  L276                IsEmpty]: Start isEmpty. Operand 11383 states and 17908 transitions.
[2021-11-20 05:49:04,362 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1713
[2021-11-20 05:49:04,363 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:49:04,364 INFO  L514         BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:49:04,410 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2021-11-20 05:49:04,578 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2021-11-20 05:49:04,578 INFO  L402      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:49:04,578 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:49:04,579 INFO  L85        PathProgramCache]: Analyzing trace with hash -1823598417, now seen corresponding path program 2 times
[2021-11-20 05:49:04,579 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:49:04,579 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276387946]
[2021-11-20 05:49:04,579 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:49:04,580 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:49:04,630 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:49:04,630 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888247279]
[2021-11-20 05:49:04,630 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-20 05:49:04,631 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:49:04,631 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:49:04,632 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:49:04,657 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2021-11-20 05:49:05,621 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-20 05:49:05,621 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 05:49:05,651 INFO  L263         TraceCheckSpWp]: Trace formula consists of 4975 conjuncts, 191 conjunts are in the unsatisfiable core
[2021-11-20 05:49:05,702 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:49:18,473 INFO  L134       CoverageAnalysis]: Checked inductivity of 54992 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked.
[2021-11-20 05:49:18,473 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:49:46,236 INFO  L134       CoverageAnalysis]: Checked inductivity of 54992 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 20020 trivial. 0 not checked.
[2021-11-20 05:49:46,237 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:49:46,237 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276387946]
[2021-11-20 05:49:46,237 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:49:46,238 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888247279]
[2021-11-20 05:49:46,238 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888247279] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:49:46,238 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:49:46,239 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381
[2021-11-20 05:49:46,240 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403180726]
[2021-11-20 05:49:46,240 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:49:46,246 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 382 states
[2021-11-20 05:49:46,247 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:49:46,256 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants.
[2021-11-20 05:49:46,272 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542
[2021-11-20 05:49:46,273 INFO  L87              Difference]: Start difference. First operand 11383 states and 17908 transitions. Second operand  has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192)
[2021-11-20 05:54:49,635 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:54:49,636 INFO  L93              Difference]: Finished difference Result 22191 states and 35360 transitions.
[2021-11-20 05:54:49,636 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. 
[2021-11-20 05:54:49,637 INFO  L78                 Accepts]: Start accepts. Automaton has  has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) Word has length 1712
[2021-11-20 05:54:49,639 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:54:49,723 INFO  L225             Difference]: With dead ends: 22191
[2021-11-20 05:54:49,723 INFO  L226             Difference]: Without dead ends: 22190
[2021-11-20 05:54:49,778 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3801 GetRequests, 3042 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 81.7s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360
[2021-11-20 05:54:49,779 INFO  L933         BasicCegarLoop]: 153 mSDtfsCounter, 50076 mSDsluCounter, 6036 mSDsCounter, 0 mSdLazyCounter, 24400 mSolverCounterSat, 30051 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50086 SdHoareTripleChecker+Valid, 6189 SdHoareTripleChecker+Invalid, 54451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 30051 IncrementalHoareTripleChecker+Valid, 24400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time
[2021-11-20 05:54:49,780 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [50086 Valid, 6189 Invalid, 54451 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [30051 Valid, 24400 Invalid, 0 Unknown, 0 Unchecked, 25.8s Time]
[2021-11-20 05:54:49,805 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22190 states.
[2021-11-20 05:54:51,752 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22190 to 22135.
[2021-11-20 05:54:51,780 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22135 states, 15311 states have (on average 1.5054535954542485) internal successors, (23050), 20779 states have internal predecessors, (23050), 6064 states have call successors, (6064), 758 states have call predecessors, (6064), 759 states have return successors, (6074), 786 states have call predecessors, (6074), 6064 states have call successors, (6074)
[2021-11-20 05:54:51,870 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22135 states to 22135 states and 35188 transitions.
[2021-11-20 05:54:51,871 INFO  L78                 Accepts]: Start accepts. Automaton has 22135 states and 35188 transitions. Word has length 1712
[2021-11-20 05:54:51,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:54:51,873 INFO  L470      AbstractCegarLoop]: Abstraction has 22135 states and 35188 transitions.
[2021-11-20 05:54:51,874 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192)
[2021-11-20 05:54:51,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 22135 states and 35188 transitions.
[2021-11-20 05:54:52,025 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2865
[2021-11-20 05:54:52,026 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:54:52,027 INFO  L514         BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:54:52,084 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2021-11-20 05:54:52,242 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:54:52,242 INFO  L402      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:54:52,242 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:54:52,243 INFO  L85        PathProgramCache]: Analyzing trace with hash 708940975, now seen corresponding path program 3 times
[2021-11-20 05:54:52,243 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:54:52,244 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361389241]
[2021-11-20 05:54:52,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:54:52,244 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:54:52,331 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:54:52,331 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126677787]
[2021-11-20 05:54:52,332 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-20 05:54:52,332 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:54:52,332 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:54:52,333 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:54:52,358 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2021-11-20 05:54:52,778 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-11-20 05:54:52,778 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 05:54:52,784 INFO  L263         TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-20 05:54:52,823 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:54:56,903 INFO  L134       CoverageAnalysis]: Checked inductivity of 218000 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 216107 trivial. 0 not checked.
[2021-11-20 05:54:56,903 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-20 05:54:56,903 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:54:56,904 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361389241]
[2021-11-20 05:54:56,904 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:54:56,904 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126677787]
[2021-11-20 05:54:56,904 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126677787] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 05:54:56,904 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 05:54:56,905 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-20 05:54:56,906 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974880999]
[2021-11-20 05:54:56,906 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 05:54:56,908 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 05:54:56,909 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:54:56,909 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 05:54:56,909 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-11-20 05:54:56,910 INFO  L87              Difference]: Start difference. First operand 22135 states and 35188 transitions. Second operand  has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-20 05:54:59,658 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 05:54:59,659 INFO  L93              Difference]: Finished difference Result 45089 states and 70921 transitions.
[2021-11-20 05:54:59,659 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-11-20 05:54:59,659 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 2864
[2021-11-20 05:54:59,662 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 05:54:59,870 INFO  L225             Difference]: With dead ends: 45089
[2021-11-20 05:54:59,870 INFO  L226             Difference]: Without dead ends: 45088
[2021-11-20 05:54:59,898 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2872 GetRequests, 2863 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110
[2021-11-20 05:54:59,898 INFO  L933         BasicCegarLoop]: 140 mSDtfsCounter, 299 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 05:54:59,899 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 396 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 05:54:59,951 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45088 states.
[2021-11-20 05:55:02,701 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45088 to 36623.
[2021-11-20 05:55:02,720 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36623 states, 26049 states have (on average 1.5139928596107337) internal successors, (39438), 34136 states have internal predecessors, (39438), 9248 states have call successors, (9248), 1324 states have call predecessors, (9248), 1325 states have return successors, (9258), 1351 states have call predecessors, (9258), 9248 states have call successors, (9258)
[2021-11-20 05:55:02,810 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36623 states to 36623 states and 57944 transitions.
[2021-11-20 05:55:02,810 INFO  L78                 Accepts]: Start accepts. Automaton has 36623 states and 57944 transitions. Word has length 2864
[2021-11-20 05:55:02,813 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 05:55:02,813 INFO  L470      AbstractCegarLoop]: Abstraction has 36623 states and 57944 transitions.
[2021-11-20 05:55:02,814 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-20 05:55:02,814 INFO  L276                IsEmpty]: Start isEmpty. Operand 36623 states and 57944 transitions.
[2021-11-20 05:55:02,985 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2866
[2021-11-20 05:55:02,985 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 05:55:02,987 INFO  L514         BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 05:55:03,025 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2021-11-20 05:55:03,202 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2021-11-20 05:55:03,202 INFO  L402      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-20 05:55:03,202 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 05:55:03,203 INFO  L85        PathProgramCache]: Analyzing trace with hash 592787678, now seen corresponding path program 1 times
[2021-11-20 05:55:03,203 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 05:55:03,203 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371706565]
[2021-11-20 05:55:03,204 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:55:03,204 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 05:55:03,256 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 05:55:03,256 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281617135]
[2021-11-20 05:55:03,257 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 05:55:03,257 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 05:55:03,257 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 05:55:03,258 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 05:55:03,258 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_198ff02d-14c7-4c50-8d86-77e0815fc4d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2021-11-20 05:55:04,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 05:55:04,672 INFO  L263         TraceCheckSpWp]: Trace formula consists of 8434 conjuncts, 383 conjunts are in the unsatisfiable core
[2021-11-20 05:55:04,734 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 05:55:51,406 INFO  L134       CoverageAnalysis]: Checked inductivity of 217431 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked.
[2021-11-20 05:55:51,406 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 05:57:45,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 217431 backedges. 0 proven. 143831 refuted. 0 times theorem prover too weak. 73600 trivial. 0 not checked.
[2021-11-20 05:57:45,424 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 05:57:45,424 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371706565]
[2021-11-20 05:57:45,424 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 05:57:45,425 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281617135]
[2021-11-20 05:57:45,425 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281617135] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 05:57:45,425 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 05:57:45,427 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765
[2021-11-20 05:57:45,427 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336780257]
[2021-11-20 05:57:45,427 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 05:57:45,432 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 766 states
[2021-11-20 05:57:45,432 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 05:57:45,454 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants.
[2021-11-20 05:57:45,480 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990
[2021-11-20 05:57:45,481 INFO  L87              Difference]: Start difference. First operand 36623 states and 57944 transitions. Second operand  has 766 states, 765 states have (on average 4.436601307189543) internal successors, (3394), 766 states have internal predecessors, (3394), 380 states have call successors, (382), 191 states have call predecessors, (382), 191 states have return successors, (382), 380 states have call predecessors, (382), 380 states have call successors, (382)