./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-1.i --full-output --architecture 32bit


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


Checking for overflows
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 2f3a36748f32ca088af5a89c176902d6a78b8f206b767e4775b8a1d3a36bb37f
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:36:53,899 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:36:54,025 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf
[2023-11-19 07:36:54,039 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:36:54,040 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:36:54,080 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:36:54,081 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:36:54,082 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:36:54,083 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:36:54,088 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:36:54,089 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:36:54,090 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-19 07:36:54,090 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-19 07:36:54,092 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:36:54,093 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:36:54,093 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-19 07:36:54,094 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-19 07:36:54,094 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-19 07:36:54,095 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-19 07:36:54,095 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:36:54,095 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:36:54,096 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:36:54,097 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-11-19 07:36:54,097 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-19 07:36:54,097 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-19 07:36:54,098 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-19 07:36:54,098 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-19 07:36:54,099 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:36:54,100 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-19 07:36:54,100 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-19 07:36:54,101 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:36:54,102 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:36:54,102 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:36:54,102 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:36:54,103 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-19 07:36:54,103 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:36:54,103 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:36:54,103 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:36:54,104 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:36:54,104 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:36:54,104 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:36:54,108 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/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_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
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 -> 2f3a36748f32ca088af5a89c176902d6a78b8f206b767e4775b8a1d3a36bb37f
[2023-11-19 07:36:54,412 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:36:54,436 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:36:54,439 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:36:54,440 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-19 07:36:54,441 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-19 07:36:54,443 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-1.i
[2023-11-19 07:36:57,624 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:36:58,019 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-19 07:36:58,029 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-1.i
[2023-11-19 07:36:58,064 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/data/7e4bf6a68/a27126b6f8854e8089d72a89d71ce509/FLAG5373b97db
[2023-11-19 07:36:58,076 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/data/7e4bf6a68/a27126b6f8854e8089d72a89d71ce509
[2023-11-19 07:36:58,079 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:36:58,080 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:36:58,082 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:36:58,082 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:36:58,087 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:36:58,088 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:58" (1/1) ...
[2023-11-19 07:36:58,089 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2383eea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58, skipping insertion in model container
[2023-11-19 07:36:58,089 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:58" (1/1) ...
[2023-11-19 07:36:58,171 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:36:58,495 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 07:36:58,915 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:36:58,936 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-19 07:36:58,971 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 07:36:59,087 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:36:59,125 WARN  L675               CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:36:59,125 WARN  L675               CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:36:59,132 INFO  L206         MainTranslator]: Completed translation
[2023-11-19 07:36:59,133 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59 WrapperNode
[2023-11-19 07:36:59,133 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:36:59,134 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:36:59,134 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:36:59,135 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:36:59,141 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,188 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,303 INFO  L138                Inliner]: procedures = 178, calls = 283, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1349
[2023-11-19 07:36:59,316 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:36:59,317 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:36:59,317 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:36:59,317 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:36:59,327 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,327 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,381 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,381 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,458 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,492 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,504 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,511 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,529 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:36:59,531 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:36:59,531 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:36:59,532 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:36:59,532 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (1/1) ...
[2023-11-19 07:36:59,539 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:36:59,551 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:36:59,573 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:36:59,604 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:36:59,625 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:36:59,625 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-11-19 07:36:59,626 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-11-19 07:36:59,626 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:36:59,626 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset
[2023-11-19 07:36:59,626 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset
[2023-11-19 07:36:59,626 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-11-19 07:36:59,627 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:36:59,627 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2023-11-19 07:36:59,628 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:36:59,629 INFO  L130     BoogieDeclarations]: Found specification of procedure memcmp
[2023-11-19 07:36:59,629 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2023-11-19 07:36:59,629 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:36:59,629 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:36:59,629 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:36:59,629 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:36:59,901 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-19 07:36:59,905 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:37:01,694 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-19 07:37:01,717 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:37:01,717 INFO  L302             CfgBuilder]: Removed 63 assume(true) statements.
[2023-11-19 07:37:01,732 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:01 BoogieIcfgContainer
[2023-11-19 07:37:01,732 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:37:01,736 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:37:01,736 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:37:01,741 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:37:01,742 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:58" (1/3) ...
[2023-11-19 07:37:01,743 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c0aa22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:01, skipping insertion in model container
[2023-11-19 07:37:01,743 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:59" (2/3) ...
[2023-11-19 07:37:01,745 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c0aa22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:01, skipping insertion in model container
[2023-11-19 07:37:01,746 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:01" (3/3) ...
[2023-11-19 07:37:01,747 INFO  L112   eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test3-1.i
[2023-11-19 07:37:01,794 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:37:01,794 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations.
[2023-11-19 07:37:01,874 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:37:01,882 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55e5a941, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:37:01,882 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2023-11-19 07:37:01,891 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 372 states, 358 states have (on average 1.6983240223463687) internal successors, (608), 365 states have internal predecessors, (608), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2023-11-19 07:37:01,898 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2023-11-19 07:37:01,898 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:01,899 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:01,899 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:01,904 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:01,904 INFO  L85        PathProgramCache]: Analyzing trace with hash -17045365, now seen corresponding path program 1 times
[2023-11-19 07:37:01,915 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:01,915 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062951108]
[2023-11-19 07:37:01,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:01,916 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:02,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:02,129 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:02,132 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062951108]
[2023-11-19 07:37:02,133 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-11-19 07:37:02,133 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347249653]
[2023-11-19 07:37:02,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:02,134 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:02,135 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:02,137 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:02,160 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 07:37:02,325 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:02,328 INFO  L262         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-11-19 07:37:02,335 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:02,362 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:02,362 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:02,363 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347249653] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:02,363 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:02,364 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:37:02,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119198862]
[2023-11-19 07:37:02,367 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:02,371 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 07:37:02,372 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:02,418 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 07:37:02,419 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:37:02,425 INFO  L87              Difference]: Start difference. First operand  has 372 states, 358 states have (on average 1.6983240223463687) internal successors, (608), 365 states have internal predecessors, (608), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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)
[2023-11-19 07:37:02,527 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:02,527 INFO  L93              Difference]: Finished difference Result 740 states and 1233 transitions.
[2023-11-19 07:37:02,529 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-19 07:37:02,530 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8
[2023-11-19 07:37:02,530 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:02,552 INFO  L225             Difference]: With dead ends: 740
[2023-11-19 07:37:02,552 INFO  L226             Difference]: Without dead ends: 361
[2023-11-19 07:37:02,562 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:37:02,566 INFO  L413           NwaCegarLoop]: 548 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:02,568 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:37:02,589 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 361 states.
[2023-11-19 07:37:02,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361.
[2023-11-19 07:37:02,654 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 361 states, 349 states have (on average 1.510028653295129) internal successors, (527), 355 states have internal predecessors, (527), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-11-19 07:37:02,658 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 535 transitions.
[2023-11-19 07:37:02,660 INFO  L78                 Accepts]: Start accepts. Automaton has 361 states and 535 transitions. Word has length 8
[2023-11-19 07:37:02,661 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:02,661 INFO  L495      AbstractCegarLoop]: Abstraction has 361 states and 535 transitions.
[2023-11-19 07:37:02,661 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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)
[2023-11-19 07:37:02,662 INFO  L276                IsEmpty]: Start isEmpty. Operand 361 states and 535 transitions.
[2023-11-19 07:37:02,663 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2023-11-19 07:37:02,663 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:02,663 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:02,691 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:02,880 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-11-19 07:37:02,880 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:02,881 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:02,881 INFO  L85        PathProgramCache]: Analyzing trace with hash -17043443, now seen corresponding path program 1 times
[2023-11-19 07:37:02,881 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:02,881 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125121303]
[2023-11-19 07:37:02,881 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:02,882 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:02,911 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:02,911 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525142765]
[2023-11-19 07:37:02,911 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:02,920 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:02,920 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:02,921 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:02,940 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 07:37:03,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:03,098 INFO  L262         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-19 07:37:03,102 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:03,164 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2023-11-19 07:37:03,195 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-11-19 07:37:03,248 INFO  L349             Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2023-11-19 07:37:03,248 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2023-11-19 07:37:03,312 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:37:03,315 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2023-11-19 07:37:03,326 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:03,326 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:03,327 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:03,327 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125121303]
[2023-11-19 07:37:03,327 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:03,328 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525142765]
[2023-11-19 07:37:03,328 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525142765] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:03,329 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:03,329 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-19 07:37:03,330 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536927065]
[2023-11-19 07:37:03,330 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:03,332 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 07:37:03,333 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:03,334 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 07:37:03,334 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-19 07:37:03,334 INFO  L87              Difference]: Start difference. First operand 361 states and 535 transitions. Second operand  has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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)
[2023-11-19 07:37:04,599 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:04,599 INFO  L93              Difference]: Finished difference Result 985 states and 1485 transitions.
[2023-11-19 07:37:04,603 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-19 07:37:04,603 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 8
[2023-11-19 07:37:04,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:04,611 INFO  L225             Difference]: With dead ends: 985
[2023-11-19 07:37:04,611 INFO  L226             Difference]: Without dead ends: 983
[2023-11-19 07:37:04,612 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-19 07:37:04,613 INFO  L413           NwaCegarLoop]: 494 mSDtfsCounter, 1091 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:04,614 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 2398 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2023-11-19 07:37:04,616 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 983 states.
[2023-11-19 07:37:04,640 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 367.
[2023-11-19 07:37:04,641 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 367 states, 355 states have (on average 1.504225352112676) internal successors, (534), 361 states have internal predecessors, (534), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-11-19 07:37:04,644 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 542 transitions.
[2023-11-19 07:37:04,644 INFO  L78                 Accepts]: Start accepts. Automaton has 367 states and 542 transitions. Word has length 8
[2023-11-19 07:37:04,644 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:04,644 INFO  L495      AbstractCegarLoop]: Abstraction has 367 states and 542 transitions.
[2023-11-19 07:37:04,645 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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)
[2023-11-19 07:37:04,645 INFO  L276                IsEmpty]: Start isEmpty. Operand 367 states and 542 transitions.
[2023-11-19 07:37:04,649 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2023-11-19 07:37:04,649 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:04,649 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:04,680 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:04,871 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:04,871 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:04,872 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:04,872 INFO  L85        PathProgramCache]: Analyzing trace with hash -1394530293, now seen corresponding path program 1 times
[2023-11-19 07:37:04,872 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:04,872 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051433302]
[2023-11-19 07:37:04,873 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:04,873 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:04,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:05,229 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2023-11-19 07:37:05,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:05,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:05,236 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:05,238 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051433302]
[2023-11-19 07:37:05,239 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051433302] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:05,239 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:05,240 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 07:37:05,240 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581982992]
[2023-11-19 07:37:05,240 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:05,241 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:37:05,242 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:05,243 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:37:05,243 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:37:05,258 INFO  L87              Difference]: Start difference. First operand 367 states and 542 transitions. Second operand  has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 07:37:05,360 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:05,360 INFO  L93              Difference]: Finished difference Result 543 states and 804 transitions.
[2023-11-19 07:37:05,361 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 07:37:05,361 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71
[2023-11-19 07:37:05,362 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:05,364 INFO  L225             Difference]: With dead ends: 543
[2023-11-19 07:37:05,365 INFO  L226             Difference]: Without dead ends: 371
[2023-11-19 07:37:05,366 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:37:05,369 INFO  L413           NwaCegarLoop]: 508 mSDtfsCounter, 165 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:05,372 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1370 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 07:37:05,376 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 371 states.
[2023-11-19 07:37:05,397 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367.
[2023-11-19 07:37:05,398 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 367 states, 355 states have (on average 1.4845070422535211) internal successors, (527), 361 states have internal predecessors, (527), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-11-19 07:37:05,403 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 535 transitions.
[2023-11-19 07:37:05,403 INFO  L78                 Accepts]: Start accepts. Automaton has 367 states and 535 transitions. Word has length 71
[2023-11-19 07:37:05,404 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:05,404 INFO  L495      AbstractCegarLoop]: Abstraction has 367 states and 535 transitions.
[2023-11-19 07:37:05,408 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 07:37:05,408 INFO  L276                IsEmpty]: Start isEmpty. Operand 367 states and 535 transitions.
[2023-11-19 07:37:05,420 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2023-11-19 07:37:05,420 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:05,420 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:05,420 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 07:37:05,421 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:05,421 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:05,422 INFO  L85        PathProgramCache]: Analyzing trace with hash 1066700031, now seen corresponding path program 1 times
[2023-11-19 07:37:05,422 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:05,422 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998079328]
[2023-11-19 07:37:05,423 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:05,423 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:05,503 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:05,610 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2023-11-19 07:37:05,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:05,630 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:05,630 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:05,630 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998079328]
[2023-11-19 07:37:05,631 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998079328] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:05,631 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:05,631 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 07:37:05,632 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879092308]
[2023-11-19 07:37:05,632 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:05,632 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:37:05,633 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:05,633 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:37:05,634 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:37:05,634 INFO  L87              Difference]: Start difference. First operand 367 states and 535 transitions. Second operand  has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 07:37:05,664 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:05,665 INFO  L93              Difference]: Finished difference Result 539 states and 786 transitions.
[2023-11-19 07:37:05,665 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 07:37:05,665 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71
[2023-11-19 07:37:05,666 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:05,668 INFO  L225             Difference]: With dead ends: 539
[2023-11-19 07:37:05,669 INFO  L226             Difference]: Without dead ends: 362
[2023-11-19 07:37:05,669 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:37:05,670 INFO  L413           NwaCegarLoop]: 526 mSDtfsCounter, 2 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:05,671 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1572 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:37:05,673 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 362 states.
[2023-11-19 07:37:05,681 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362.
[2023-11-19 07:37:05,682 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 362 states, 352 states have (on average 1.4857954545454546) internal successors, (523), 357 states have internal predecessors, (523), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:05,684 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 529 transitions.
[2023-11-19 07:37:05,684 INFO  L78                 Accepts]: Start accepts. Automaton has 362 states and 529 transitions. Word has length 71
[2023-11-19 07:37:05,685 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:05,685 INFO  L495      AbstractCegarLoop]: Abstraction has 362 states and 529 transitions.
[2023-11-19 07:37:05,685 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 07:37:05,686 INFO  L276                IsEmpty]: Start isEmpty. Operand 362 states and 529 transitions.
[2023-11-19 07:37:05,687 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2023-11-19 07:37:05,687 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:05,687 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:05,688 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 07:37:05,688 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:05,688 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:05,688 INFO  L85        PathProgramCache]: Analyzing trace with hash -1442135064, now seen corresponding path program 1 times
[2023-11-19 07:37:05,689 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:05,689 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550537482]
[2023-11-19 07:37:05,689 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:05,689 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:05,720 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:05,812 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:05,812 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:05,812 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550537482]
[2023-11-19 07:37:05,813 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550537482] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:05,813 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:05,813 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:37:05,813 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314893078]
[2023-11-19 07:37:05,813 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:05,814 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:37:05,814 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:05,815 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:37:05,815 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:37:05,815 INFO  L87              Difference]: Start difference. First operand 362 states and 529 transitions. Second operand  has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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)
[2023-11-19 07:37:05,850 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:05,850 INFO  L93              Difference]: Finished difference Result 536 states and 782 transitions.
[2023-11-19 07:37:05,851 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-19 07:37:05,851 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72
[2023-11-19 07:37:05,852 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:05,854 INFO  L225             Difference]: With dead ends: 536
[2023-11-19 07:37:05,854 INFO  L226             Difference]: Without dead ends: 362
[2023-11-19 07:37:05,855 INFO  L412           NwaCegarLoop]: 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
[2023-11-19 07:37:05,856 INFO  L413           NwaCegarLoop]: 521 mSDtfsCounter, 14 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:05,856 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1017 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:37:05,858 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 362 states.
[2023-11-19 07:37:05,866 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362.
[2023-11-19 07:37:05,867 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 362 states, 352 states have (on average 1.4744318181818181) internal successors, (519), 357 states have internal predecessors, (519), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:05,869 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 525 transitions.
[2023-11-19 07:37:05,870 INFO  L78                 Accepts]: Start accepts. Automaton has 362 states and 525 transitions. Word has length 72
[2023-11-19 07:37:05,870 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:05,870 INFO  L495      AbstractCegarLoop]: Abstraction has 362 states and 525 transitions.
[2023-11-19 07:37:05,871 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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)
[2023-11-19 07:37:05,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 362 states and 525 transitions.
[2023-11-19 07:37:05,872 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2023-11-19 07:37:05,873 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:05,873 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:05,873 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:37:05,873 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:05,874 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:05,874 INFO  L85        PathProgramCache]: Analyzing trace with hash -1267634048, now seen corresponding path program 1 times
[2023-11-19 07:37:05,874 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:05,874 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456434627]
[2023-11-19 07:37:05,875 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:05,875 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:05,926 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:05,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998990710]
[2023-11-19 07:37:05,926 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:05,927 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:05,927 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:05,928 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:05,952 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-19 07:37:06,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:06,243 INFO  L262         TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-19 07:37:06,250 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:06,285 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:06,286 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:06,286 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:06,286 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456434627]
[2023-11-19 07:37:06,286 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:06,286 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998990710]
[2023-11-19 07:37:06,287 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998990710] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:06,287 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:06,287 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:37:06,287 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983143652]
[2023-11-19 07:37:06,287 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:06,288 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:37:06,288 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:06,289 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:37:06,289 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:37:06,289 INFO  L87              Difference]: Start difference. First operand 362 states and 525 transitions. Second operand  has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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)
[2023-11-19 07:37:06,384 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:06,385 INFO  L93              Difference]: Finished difference Result 736 states and 1071 transitions.
[2023-11-19 07:37:06,385 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-19 07:37:06,385 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82
[2023-11-19 07:37:06,386 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:06,388 INFO  L225             Difference]: With dead ends: 736
[2023-11-19 07:37:06,389 INFO  L226             Difference]: Without dead ends: 383
[2023-11-19 07:37:06,390 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:37:06,391 INFO  L413           NwaCegarLoop]: 498 mSDtfsCounter, 9 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 981 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
[2023-11-19 07:37:06,391 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 981 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 07:37:06,393 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 383 states.
[2023-11-19 07:37:06,403 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 382.
[2023-11-19 07:37:06,404 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 382 states, 372 states have (on average 1.4489247311827957) internal successors, (539), 377 states have internal predecessors, (539), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:06,407 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 545 transitions.
[2023-11-19 07:37:06,407 INFO  L78                 Accepts]: Start accepts. Automaton has 382 states and 545 transitions. Word has length 82
[2023-11-19 07:37:06,407 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:06,407 INFO  L495      AbstractCegarLoop]: Abstraction has 382 states and 545 transitions.
[2023-11-19 07:37:06,408 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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)
[2023-11-19 07:37:06,408 INFO  L276                IsEmpty]: Start isEmpty. Operand 382 states and 545 transitions.
[2023-11-19 07:37:06,410 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2023-11-19 07:37:06,410 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:06,410 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:06,439 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:06,634 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-19 07:37:06,634 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:06,635 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:06,635 INFO  L85        PathProgramCache]: Analyzing trace with hash -1308308798, now seen corresponding path program 1 times
[2023-11-19 07:37:06,635 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:06,635 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304799892]
[2023-11-19 07:37:06,635 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:06,636 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:06,686 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:06,687 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085168123]
[2023-11-19 07:37:06,687 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:06,687 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:06,688 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:06,689 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:06,692 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-19 07:37:06,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:06,981 INFO  L262         TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-19 07:37:06,997 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:07,027 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:07,027 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:07,028 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:07,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304799892]
[2023-11-19 07:37:07,028 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:07,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085168123]
[2023-11-19 07:37:07,028 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085168123] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:07,029 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:07,029 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 07:37:07,029 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835740003]
[2023-11-19 07:37:07,030 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:07,032 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:37:07,032 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:07,033 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:37:07,034 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:37:07,034 INFO  L87              Difference]: Start difference. First operand 382 states and 545 transitions. Second operand  has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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)
[2023-11-19 07:37:07,135 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:07,135 INFO  L93              Difference]: Finished difference Result 742 states and 1067 transitions.
[2023-11-19 07:37:07,136 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 07:37:07,136 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 82
[2023-11-19 07:37:07,136 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:07,139 INFO  L225             Difference]: With dead ends: 742
[2023-11-19 07:37:07,140 INFO  L226             Difference]: Without dead ends: 369
[2023-11-19 07:37:07,141 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:37:07,142 INFO  L413           NwaCegarLoop]: 491 mSDtfsCounter, 165 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:07,142 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1319 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 07:37:07,145 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 369 states.
[2023-11-19 07:37:07,153 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 368.
[2023-11-19 07:37:07,155 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 368 states, 358 states have (on average 1.446927374301676) internal successors, (518), 363 states have internal predecessors, (518), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:07,157 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 524 transitions.
[2023-11-19 07:37:07,157 INFO  L78                 Accepts]: Start accepts. Automaton has 368 states and 524 transitions. Word has length 82
[2023-11-19 07:37:07,158 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:07,158 INFO  L495      AbstractCegarLoop]: Abstraction has 368 states and 524 transitions.
[2023-11-19 07:37:07,159 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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)
[2023-11-19 07:37:07,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 368 states and 524 transitions.
[2023-11-19 07:37:07,166 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2023-11-19 07:37:07,167 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:07,167 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:07,194 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:07,389 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-11-19 07:37:07,389 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:07,390 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:07,390 INFO  L85        PathProgramCache]: Analyzing trace with hash 214771060, now seen corresponding path program 1 times
[2023-11-19 07:37:07,390 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:07,390 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936081152]
[2023-11-19 07:37:07,390 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:07,391 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:07,443 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:07,443 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676073466]
[2023-11-19 07:37:07,443 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:07,444 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:07,444 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:07,445 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:07,464 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-19 07:37:07,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:07,789 INFO  L262         TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-19 07:37:07,793 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:08,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:08,110 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:08,110 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:08,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936081152]
[2023-11-19 07:37:08,110 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:08,111 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676073466]
[2023-11-19 07:37:08,111 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676073466] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:08,111 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:08,111 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:37:08,111 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719043740]
[2023-11-19 07:37:08,111 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:08,112 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:37:08,112 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:08,112 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:37:08,112 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:37:08,113 INFO  L87              Difference]: Start difference. First operand 368 states and 524 transitions. Second operand  has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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)
[2023-11-19 07:37:08,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:08,215 INFO  L93              Difference]: Finished difference Result 962 states and 1392 transitions.
[2023-11-19 07:37:08,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-19 07:37:08,216 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82
[2023-11-19 07:37:08,216 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:08,219 INFO  L225             Difference]: With dead ends: 962
[2023-11-19 07:37:08,220 INFO  L226             Difference]: Without dead ends: 491
[2023-11-19 07:37:08,221 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:37:08,222 INFO  L413           NwaCegarLoop]: 510 mSDtfsCounter, 302 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:08,222 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 990 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 07:37:08,224 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 491 states.
[2023-11-19 07:37:08,237 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489.
[2023-11-19 07:37:08,238 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 489 states, 479 states have (on average 1.4572025052192066) internal successors, (698), 484 states have internal predecessors, (698), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:08,241 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 704 transitions.
[2023-11-19 07:37:08,241 INFO  L78                 Accepts]: Start accepts. Automaton has 489 states and 704 transitions. Word has length 82
[2023-11-19 07:37:08,242 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:08,242 INFO  L495      AbstractCegarLoop]: Abstraction has 489 states and 704 transitions.
[2023-11-19 07:37:08,242 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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)
[2023-11-19 07:37:08,242 INFO  L276                IsEmpty]: Start isEmpty. Operand 489 states and 704 transitions.
[2023-11-19 07:37:08,243 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2023-11-19 07:37:08,244 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:08,244 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:08,272 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:08,467 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:08,467 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:08,467 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:08,467 INFO  L85        PathProgramCache]: Analyzing trace with hash 1906826137, now seen corresponding path program 1 times
[2023-11-19 07:37:08,468 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:08,468 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942927252]
[2023-11-19 07:37:08,468 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:08,469 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:08,532 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:08,533 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305025708]
[2023-11-19 07:37:08,533 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:08,533 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:08,533 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:08,534 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:08,554 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-19 07:37:08,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:08,916 INFO  L262         TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 31 conjunts are in the unsatisfiable core
[2023-11-19 07:37:08,924 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:08,952 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-11-19 07:37:08,982 INFO  L349             Elim1Store]: treesize reduction 25, result has 21.9 percent of original size
[2023-11-19 07:37:08,983 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18
[2023-11-19 07:37:09,072 INFO  L349             Elim1Store]: treesize reduction 33, result has 34.0 percent of original size
[2023-11-19 07:37:09,073 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 42
[2023-11-19 07:37:09,765 INFO  L349             Elim1Store]: treesize reduction 12, result has 78.2 percent of original size
[2023-11-19 07:37:09,766 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 68
[2023-11-19 07:37:10,213 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 07:37:10,213 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:10,213 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:10,213 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942927252]
[2023-11-19 07:37:10,214 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:10,214 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305025708]
[2023-11-19 07:37:10,214 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305025708] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:10,214 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:10,214 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-11-19 07:37:10,215 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79829195]
[2023-11-19 07:37:10,215 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:10,216 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-11-19 07:37:10,216 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:10,217 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-11-19 07:37:10,218 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2023-11-19 07:37:10,218 INFO  L87              Difference]: Start difference. First operand 489 states and 704 transitions. Second operand  has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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)
[2023-11-19 07:37:13,903 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:13,903 INFO  L93              Difference]: Finished difference Result 1096 states and 1570 transitions.
[2023-11-19 07:37:13,904 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-19 07:37:13,904 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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 97
[2023-11-19 07:37:13,904 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:13,909 INFO  L225             Difference]: With dead ends: 1096
[2023-11-19 07:37:13,909 INFO  L226             Difference]: Without dead ends: 692
[2023-11-19 07:37:13,910 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342
[2023-11-19 07:37:13,911 INFO  L413           NwaCegarLoop]: 495 mSDtfsCounter, 451 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:13,911 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 3444 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2023-11-19 07:37:13,915 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 692 states.
[2023-11-19 07:37:13,940 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 521.
[2023-11-19 07:37:13,941 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 521 states, 511 states have (on average 1.4383561643835616) internal successors, (735), 516 states have internal predecessors, (735), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:13,944 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 741 transitions.
[2023-11-19 07:37:13,944 INFO  L78                 Accepts]: Start accepts. Automaton has 521 states and 741 transitions. Word has length 97
[2023-11-19 07:37:13,945 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:13,946 INFO  L495      AbstractCegarLoop]: Abstraction has 521 states and 741 transitions.
[2023-11-19 07:37:13,946 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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)
[2023-11-19 07:37:13,946 INFO  L276                IsEmpty]: Start isEmpty. Operand 521 states and 741 transitions.
[2023-11-19 07:37:13,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2023-11-19 07:37:13,948 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:13,948 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:13,976 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:14,171 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:14,171 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:14,172 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:14,172 INFO  L85        PathProgramCache]: Analyzing trace with hash 1414199963, now seen corresponding path program 1 times
[2023-11-19 07:37:14,172 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:14,172 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183477159]
[2023-11-19 07:37:14,172 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:14,172 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:14,229 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:14,229 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387665228]
[2023-11-19 07:37:14,229 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:14,230 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:14,230 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:14,231 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:14,258 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-19 07:37:14,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:14,597 INFO  L262         TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-19 07:37:14,604 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:14,647 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 07:37:14,648 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:14,648 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:14,648 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183477159]
[2023-11-19 07:37:14,648 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:14,648 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387665228]
[2023-11-19 07:37:14,648 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [387665228] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:14,649 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:14,649 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-19 07:37:14,649 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275094166]
[2023-11-19 07:37:14,649 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:14,650 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 07:37:14,650 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:14,650 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 07:37:14,651 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:37:14,651 INFO  L87              Difference]: Start difference. First operand 521 states and 741 transitions. Second operand  has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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)
[2023-11-19 07:37:14,793 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:14,793 INFO  L93              Difference]: Finished difference Result 1125 states and 1640 transitions.
[2023-11-19 07:37:14,793 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-19 07:37:14,794 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 97
[2023-11-19 07:37:14,794 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:14,798 INFO  L225             Difference]: With dead ends: 1125
[2023-11-19 07:37:14,798 INFO  L226             Difference]: Without dead ends: 709
[2023-11-19 07:37:14,799 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:37:14,800 INFO  L413           NwaCegarLoop]: 496 mSDtfsCounter, 145 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:14,801 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1602 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 07:37:14,802 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 709 states.
[2023-11-19 07:37:14,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 544.
[2023-11-19 07:37:14,822 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 544 states, 534 states have (on average 1.4176029962546817) internal successors, (757), 539 states have internal predecessors, (757), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:14,825 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 763 transitions.
[2023-11-19 07:37:14,825 INFO  L78                 Accepts]: Start accepts. Automaton has 544 states and 763 transitions. Word has length 97
[2023-11-19 07:37:14,825 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:14,825 INFO  L495      AbstractCegarLoop]: Abstraction has 544 states and 763 transitions.
[2023-11-19 07:37:14,826 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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)
[2023-11-19 07:37:14,826 INFO  L276                IsEmpty]: Start isEmpty. Operand 544 states and 763 transitions.
[2023-11-19 07:37:14,846 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2023-11-19 07:37:14,846 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:14,847 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:14,880 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:15,074 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-19 07:37:15,075 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:15,075 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:15,075 INFO  L85        PathProgramCache]: Analyzing trace with hash -1086693723, now seen corresponding path program 1 times
[2023-11-19 07:37:15,076 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:15,076 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001126182]
[2023-11-19 07:37:15,076 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:15,076 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:15,128 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:15,129 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421963269]
[2023-11-19 07:37:15,129 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:15,129 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:15,129 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:15,130 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:15,156 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-19 07:37:15,545 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:15,548 INFO  L262         TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-11-19 07:37:15,551 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:15,926 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 07:37:15,926 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:15,927 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:15,927 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001126182]
[2023-11-19 07:37:15,927 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:15,927 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421963269]
[2023-11-19 07:37:15,927 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421963269] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:15,927 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:15,928 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-19 07:37:15,928 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467898323]
[2023-11-19 07:37:15,929 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:15,929 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 07:37:15,930 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:15,930 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 07:37:15,930 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-19 07:37:15,931 INFO  L87              Difference]: Start difference. First operand 544 states and 763 transitions. Second operand  has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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)
[2023-11-19 07:37:16,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:16,733 INFO  L93              Difference]: Finished difference Result 1004 states and 1422 transitions.
[2023-11-19 07:37:16,733 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-19 07:37:16,734 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 98
[2023-11-19 07:37:16,734 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:16,738 INFO  L225             Difference]: With dead ends: 1004
[2023-11-19 07:37:16,739 INFO  L226             Difference]: Without dead ends: 577
[2023-11-19 07:37:16,740 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2023-11-19 07:37:16,741 INFO  L413           NwaCegarLoop]: 494 mSDtfsCounter, 18 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:16,741 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2417 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-11-19 07:37:16,743 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 577 states.
[2023-11-19 07:37:16,762 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 569.
[2023-11-19 07:37:16,765 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 569 states, 559 states have (on average 1.411449016100179) internal successors, (789), 564 states have internal predecessors, (789), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:16,769 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 795 transitions.
[2023-11-19 07:37:16,769 INFO  L78                 Accepts]: Start accepts. Automaton has 569 states and 795 transitions. Word has length 98
[2023-11-19 07:37:16,769 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:16,770 INFO  L495      AbstractCegarLoop]: Abstraction has 569 states and 795 transitions.
[2023-11-19 07:37:16,770 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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)
[2023-11-19 07:37:16,770 INFO  L276                IsEmpty]: Start isEmpty. Operand 569 states and 795 transitions.
[2023-11-19 07:37:16,772 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2023-11-19 07:37:16,772 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:16,772 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:16,799 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:16,990 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-19 07:37:16,990 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:16,990 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:16,991 INFO  L85        PathProgramCache]: Analyzing trace with hash -630133930, now seen corresponding path program 1 times
[2023-11-19 07:37:16,991 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:16,991 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432238327]
[2023-11-19 07:37:16,991 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:16,991 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:17,079 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:17,080 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621678199]
[2023-11-19 07:37:17,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:17,080 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:17,080 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:17,081 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:17,104 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-19 07:37:17,572 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:17,577 INFO  L262         TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-19 07:37:17,581 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:17,684 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 07:37:17,684 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:17,684 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:17,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432238327]
[2023-11-19 07:37:17,685 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:17,685 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621678199]
[2023-11-19 07:37:17,685 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621678199] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:17,685 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:17,685 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-19 07:37:17,685 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900784719]
[2023-11-19 07:37:17,686 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:17,686 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 07:37:17,686 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:17,687 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 07:37:17,687 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-19 07:37:17,687 INFO  L87              Difference]: Start difference. First operand 569 states and 795 transitions. Second operand  has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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)
[2023-11-19 07:37:18,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:18,343 INFO  L93              Difference]: Finished difference Result 1031 states and 1450 transitions.
[2023-11-19 07:37:18,344 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-19 07:37:18,344 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 100
[2023-11-19 07:37:18,344 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:18,348 INFO  L225             Difference]: With dead ends: 1031
[2023-11-19 07:37:18,348 INFO  L226             Difference]: Without dead ends: 599
[2023-11-19 07:37:18,349 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-19 07:37:18,350 INFO  L413           NwaCegarLoop]: 490 mSDtfsCounter, 45 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:18,350 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2496 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-11-19 07:37:18,352 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 599 states.
[2023-11-19 07:37:18,368 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 583.
[2023-11-19 07:37:18,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 583 states, 573 states have (on average 1.4153577661431065) internal successors, (811), 578 states have internal predecessors, (811), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:18,373 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 817 transitions.
[2023-11-19 07:37:18,373 INFO  L78                 Accepts]: Start accepts. Automaton has 583 states and 817 transitions. Word has length 100
[2023-11-19 07:37:18,373 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:18,374 INFO  L495      AbstractCegarLoop]: Abstraction has 583 states and 817 transitions.
[2023-11-19 07:37:18,374 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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)
[2023-11-19 07:37:18,374 INFO  L276                IsEmpty]: Start isEmpty. Operand 583 states and 817 transitions.
[2023-11-19 07:37:18,375 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2023-11-19 07:37:18,376 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:18,376 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:18,406 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:18,591 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:18,591 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:18,591 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:18,592 INFO  L85        PathProgramCache]: Analyzing trace with hash 1167255905, now seen corresponding path program 1 times
[2023-11-19 07:37:18,592 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:18,592 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721399181]
[2023-11-19 07:37:18,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:18,592 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:18,646 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:18,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429879391]
[2023-11-19 07:37:18,647 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:18,647 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:18,647 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:18,648 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:18,656 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-19 07:37:19,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:19,131 INFO  L262         TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-19 07:37:19,135 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:19,317 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 07:37:19,318 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:19,318 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:19,318 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721399181]
[2023-11-19 07:37:19,318 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:19,318 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429879391]
[2023-11-19 07:37:19,318 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [429879391] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:19,319 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:19,319 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-19 07:37:19,319 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928082146]
[2023-11-19 07:37:19,319 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:19,320 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 07:37:19,320 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:19,322 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 07:37:19,322 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-19 07:37:19,322 INFO  L87              Difference]: Start difference. First operand 583 states and 817 transitions. Second operand  has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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)
[2023-11-19 07:37:20,024 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:20,024 INFO  L93              Difference]: Finished difference Result 1038 states and 1462 transitions.
[2023-11-19 07:37:20,024 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-19 07:37:20,025 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 100
[2023-11-19 07:37:20,025 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:20,029 INFO  L225             Difference]: With dead ends: 1038
[2023-11-19 07:37:20,029 INFO  L226             Difference]: Without dead ends: 595
[2023-11-19 07:37:20,030 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2023-11-19 07:37:20,031 INFO  L413           NwaCegarLoop]: 499 mSDtfsCounter, 15 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:20,031 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2423 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-11-19 07:37:20,033 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 595 states.
[2023-11-19 07:37:20,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 583.
[2023-11-19 07:37:20,050 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 583 states, 573 states have (on average 1.4153577661431065) internal successors, (811), 578 states have internal predecessors, (811), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:20,054 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 817 transitions.
[2023-11-19 07:37:20,055 INFO  L78                 Accepts]: Start accepts. Automaton has 583 states and 817 transitions. Word has length 100
[2023-11-19 07:37:20,055 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:20,055 INFO  L495      AbstractCegarLoop]: Abstraction has 583 states and 817 transitions.
[2023-11-19 07:37:20,055 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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)
[2023-11-19 07:37:20,055 INFO  L276                IsEmpty]: Start isEmpty. Operand 583 states and 817 transitions.
[2023-11-19 07:37:20,057 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2023-11-19 07:37:20,057 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:20,057 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:20,088 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:20,276 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:20,276 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:20,276 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:20,277 INFO  L85        PathProgramCache]: Analyzing trace with hash -356082585, now seen corresponding path program 1 times
[2023-11-19 07:37:20,277 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:20,277 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808803851]
[2023-11-19 07:37:20,277 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:20,277 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:20,334 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:20,334 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776743986]
[2023-11-19 07:37:20,334 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:20,335 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:20,335 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:20,336 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:20,352 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-19 07:37:20,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:20,827 INFO  L262         TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 34 conjunts are in the unsatisfiable core
[2023-11-19 07:37:20,831 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:21,366 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 07:37:21,366 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:21,366 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:21,366 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808803851]
[2023-11-19 07:37:21,366 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:21,367 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776743986]
[2023-11-19 07:37:21,367 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776743986] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:21,367 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:21,367 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-11-19 07:37:21,367 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631171754]
[2023-11-19 07:37:21,367 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:21,368 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-11-19 07:37:21,368 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:21,368 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-11-19 07:37:21,368 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2023-11-19 07:37:21,369 INFO  L87              Difference]: Start difference. First operand 583 states and 817 transitions. Second operand  has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 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)
[2023-11-19 07:37:23,130 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:23,131 INFO  L93              Difference]: Finished difference Result 1036 states and 1455 transitions.
[2023-11-19 07:37:23,131 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-19 07:37:23,132 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 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 101
[2023-11-19 07:37:23,132 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:23,136 INFO  L225             Difference]: With dead ends: 1036
[2023-11-19 07:37:23,137 INFO  L226             Difference]: Without dead ends: 593
[2023-11-19 07:37:23,140 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132
[2023-11-19 07:37:23,141 INFO  L413           NwaCegarLoop]: 493 mSDtfsCounter, 14 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3870 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:23,142 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3870 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2023-11-19 07:37:23,143 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 593 states.
[2023-11-19 07:37:23,163 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 589.
[2023-11-19 07:37:23,165 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 589 states, 579 states have (on average 1.4110535405872193) internal successors, (817), 584 states have internal predecessors, (817), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:37:23,169 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 823 transitions.
[2023-11-19 07:37:23,169 INFO  L78                 Accepts]: Start accepts. Automaton has 589 states and 823 transitions. Word has length 101
[2023-11-19 07:37:23,169 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:23,169 INFO  L495      AbstractCegarLoop]: Abstraction has 589 states and 823 transitions.
[2023-11-19 07:37:23,170 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 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)
[2023-11-19 07:37:23,170 INFO  L276                IsEmpty]: Start isEmpty. Operand 589 states and 823 transitions.
[2023-11-19 07:37:23,171 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2023-11-19 07:37:23,171 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:23,172 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:23,196 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:23,394 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-19 07:37:23,395 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:23,395 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:23,395 INFO  L85        PathProgramCache]: Analyzing trace with hash -497883829, now seen corresponding path program 1 times
[2023-11-19 07:37:23,395 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:23,396 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715680120]
[2023-11-19 07:37:23,396 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:23,396 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:23,473 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:23,473 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646179572]
[2023-11-19 07:37:23,473 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:23,474 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:23,474 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:23,475 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:23,492 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-19 07:37:24,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:24,634 INFO  L262         TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-19 07:37:24,637 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:24,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:37:24,657 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:24,657 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:24,657 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715680120]
[2023-11-19 07:37:24,657 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:24,657 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646179572]
[2023-11-19 07:37:24,658 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [646179572] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:24,658 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:24,658 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 07:37:24,658 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365731010]
[2023-11-19 07:37:24,658 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:24,659 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:37:24,660 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:24,660 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:37:24,660 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:37:24,661 INFO  L87              Difference]: Start difference. First operand 589 states and 823 transitions. Second operand  has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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)
[2023-11-19 07:37:24,708 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:24,708 INFO  L93              Difference]: Finished difference Result 1007 states and 1410 transitions.
[2023-11-19 07:37:24,709 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 07:37:24,709 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 101
[2023-11-19 07:37:24,710 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:24,713 INFO  L225             Difference]: With dead ends: 1007
[2023-11-19 07:37:24,713 INFO  L226             Difference]: Without dead ends: 592
[2023-11-19 07:37:24,718 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:37:24,719 INFO  L413           NwaCegarLoop]: 508 mSDtfsCounter, 2 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1520 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
[2023-11-19 07:37:24,719 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1520 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:37:24,721 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 592 states.
[2023-11-19 07:37:24,738 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592.
[2023-11-19 07:37:24,739 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 592 states, 581 states have (on average 1.4113597246127367) internal successors, (820), 587 states have internal predecessors, (820), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2023-11-19 07:37:24,744 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 827 transitions.
[2023-11-19 07:37:24,744 INFO  L78                 Accepts]: Start accepts. Automaton has 592 states and 827 transitions. Word has length 101
[2023-11-19 07:37:24,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:24,745 INFO  L495      AbstractCegarLoop]: Abstraction has 592 states and 827 transitions.
[2023-11-19 07:37:24,745 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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)
[2023-11-19 07:37:24,745 INFO  L276                IsEmpty]: Start isEmpty. Operand 592 states and 827 transitions.
[2023-11-19 07:37:24,747 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2023-11-19 07:37:24,747 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:24,747 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:24,767 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:24,967 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-19 07:37:24,967 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:24,968 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:24,968 INFO  L85        PathProgramCache]: Analyzing trace with hash 1169877673, now seen corresponding path program 1 times
[2023-11-19 07:37:24,968 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:24,968 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304342818]
[2023-11-19 07:37:24,968 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:24,968 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:25,025 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:25,026 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150977400]
[2023-11-19 07:37:25,026 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:25,026 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:25,026 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:25,027 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:25,052 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-19 07:37:25,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:25,548 INFO  L262         TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-19 07:37:25,552 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:25,575 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:37:25,575 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:37:25,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 07:37:25,654 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:25,654 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304342818]
[2023-11-19 07:37:25,654 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:25,654 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150977400]
[2023-11-19 07:37:25,654 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150977400] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:37:25,654 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-19 07:37:25,655 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2023-11-19 07:37:25,655 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995938771]
[2023-11-19 07:37:25,655 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:37:25,656 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-19 07:37:25,656 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:25,656 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-19 07:37:25,657 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-19 07:37:25,657 INFO  L87              Difference]: Start difference. First operand 592 states and 827 transitions. Second operand  has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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)
[2023-11-19 07:37:25,824 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:37:25,824 INFO  L93              Difference]: Finished difference Result 1021 states and 1431 transitions.
[2023-11-19 07:37:25,824 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-11-19 07:37:25,825 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 103
[2023-11-19 07:37:25,825 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:37:25,829 INFO  L225             Difference]: With dead ends: 1021
[2023-11-19 07:37:25,829 INFO  L226             Difference]: Without dead ends: 603
[2023-11-19 07:37:25,830 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156
[2023-11-19 07:37:25,831 INFO  L413           NwaCegarLoop]: 509 mSDtfsCounter, 9 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-19 07:37:25,831 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2027 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 07:37:25,834 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 603 states.
[2023-11-19 07:37:25,851 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601.
[2023-11-19 07:37:25,853 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 601 states, 589 states have (on average 1.4159592529711376) internal successors, (834), 595 states have internal predecessors, (834), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2023-11-19 07:37:25,856 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 841 transitions.
[2023-11-19 07:37:25,857 INFO  L78                 Accepts]: Start accepts. Automaton has 601 states and 841 transitions. Word has length 103
[2023-11-19 07:37:25,857 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:37:25,857 INFO  L495      AbstractCegarLoop]: Abstraction has 601 states and 841 transitions.
[2023-11-19 07:37:25,857 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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)
[2023-11-19 07:37:25,858 INFO  L276                IsEmpty]: Start isEmpty. Operand 601 states and 841 transitions.
[2023-11-19 07:37:25,859 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2023-11-19 07:37:25,859 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:37:25,859 INFO  L195           NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:25,888 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-11-19 07:37:26,083 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:26,083 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-19 07:37:26,083 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:26,083 INFO  L85        PathProgramCache]: Analyzing trace with hash -255265781, now seen corresponding path program 2 times
[2023-11-19 07:37:26,083 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:26,084 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767873221]
[2023-11-19 07:37:26,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:26,084 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:26,144 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:37:26,145 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637378383]
[2023-11-19 07:37:26,145 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 07:37:26,145 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:37:26,145 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:26,146 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:37:26,152 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da5c167-3d14-4501-9570-764687a576b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-19 07:37:40,100 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2023-11-19 07:37:40,100 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:37:40,109 INFO  L262         TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 29 conjunts are in the unsatisfiable core
[2023-11-19 07:37:40,113 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:37:43,032 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2023-11-19 07:37:43,032 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:37:43,033 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:43,033 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767873221]
[2023-11-19 07:37:43,033 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 07:37:43,033 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637378383]
[2023-11-19 07:37:43,033 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [637378383] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:43,033 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:43,033 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2023-11-19 07:37:43,034 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072275699]
[2023-11-19 07:37:43,034 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:43,034 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-19 07:37:43,034 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:43,035 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-19 07:37:43,035 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132
[2023-11-19 07:37:43,035 INFO  L87              Difference]: Start difference. First operand 601 states and 841 transitions. Second operand  has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 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)
[2023-11-19 07:37:45,284 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-19 07:37:46,870 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []