./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i --full-output --architecture 32bit


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


Checking for overflows
Using default analysis
Version 527bcce2
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx --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 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-527bcce
[2023-11-21 21:03:28,893 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-21 21:03:28,995 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf
[2023-11-21 21:03:29,003 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-21 21:03:29,003 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-21 21:03:29,055 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-21 21:03:29,056 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-21 21:03:29,056 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-21 21:03:29,057 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-21 21:03:29,058 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-21 21:03:29,058 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-21 21:03:29,059 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-21 21:03:29,060 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-21 21:03:29,061 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-21 21:03:29,061 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-21 21:03:29,062 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-21 21:03:29,062 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-21 21:03:29,063 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-21 21:03:29,064 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-21 21:03:29,064 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-21 21:03:29,065 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-21 21:03:29,065 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-21 21:03:29,066 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-21 21:03:29,066 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-21 21:03:29,067 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-11-21 21:03:29,067 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-21 21:03:29,068 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-21 21:03:29,073 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-21 21:03:29,074 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-21 21:03:29,074 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-21 21:03:29,075 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-21 21:03:29,076 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-21 21:03:29,077 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-21 21:03:29,077 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-21 21:03:29,078 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-21 21:03:29,078 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-21 21:03:29,078 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-21 21:03:29,079 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-21 21:03:29,079 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-21 21:03:29,079 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-21 21:03:29,079 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-21 21:03:29,080 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-21 21:03:29,080 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-21 21:03:29,081 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-21 21:03:29,081 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_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/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_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx
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 -> 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89
[2023-11-21 21:03:29,363 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-21 21:03:29,384 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-21 21:03:29,387 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-21 21:03:29,388 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-21 21:03:29,388 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-21 21:03:29,390 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i
[2023-11-21 21:03:32,676 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-21 21:03:33,041 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-21 21:03:33,046 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i
[2023-11-21 21:03:33,077 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/data/12d09ed58/f0ec8d0e843242a388d977a3eb200894/FLAG8a2c5157a
[2023-11-21 21:03:33,094 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/data/12d09ed58/f0ec8d0e843242a388d977a3eb200894
[2023-11-21 21:03:33,100 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-21 21:03:33,102 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-21 21:03:33,105 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-21 21:03:33,105 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-21 21:03:33,110 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-21 21:03:33,111 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:33,112 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dcb2d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33, skipping insertion in model container
[2023-11-21 21:03:33,113 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:33,201 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-21 21:03:33,809 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-21 21:03:33,821 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-21 21:03:33,941 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-21 21:03:33,982 INFO  L206         MainTranslator]: Completed translation
[2023-11-21 21:03:33,983 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33 WrapperNode
[2023-11-21 21:03:33,983 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-21 21:03:33,984 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-21 21:03:33,985 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-21 21:03:33,985 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-21 21:03:33,991 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,033 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,114 INFO  L138                Inliner]: procedures = 177, calls = 238, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 967
[2023-11-21 21:03:34,115 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-21 21:03:34,118 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-21 21:03:34,118 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-21 21:03:34,118 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-21 21:03:34,130 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,130 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,140 INFO  L184        PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,217 WARN  L106           HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure #Ultimate.C_memset is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification
[2023-11-21 21:03:34,217 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,218 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,261 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,272 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,276 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,282 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,291 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-21 21:03:34,292 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-21 21:03:34,293 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-21 21:03:34,293 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-21 21:03:34,293 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (1/1) ...
[2023-11-21 21:03:34,299 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-21 21:03:34,313 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 21:03:34,325 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-21 21:03:34,363 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-21 21:03:34,375 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-11-21 21:03:34,375 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-11-21 21:03:34,375 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-11-21 21:03:34,376 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-11-21 21:03:34,376 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset
[2023-11-21 21:03:34,376 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset
[2023-11-21 21:03:34,376 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-11-21 21:03:34,376 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-21 21:03:34,377 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-21 21:03:34,378 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2023-11-21 21:03:34,379 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2023-11-21 21:03:34,379 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-21 21:03:34,379 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-21 21:03:34,379 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-21 21:03:34,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-21 21:03:34,610 INFO  L240             CfgBuilder]: Building ICFG
[2023-11-21 21:03:34,613 INFO  L266             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-21 21:03:36,108 INFO  L281             CfgBuilder]: Performing block encoding
[2023-11-21 21:03:37,237 INFO  L303             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-21 21:03:37,237 INFO  L308             CfgBuilder]: Removed 40 assume(true) statements.
[2023-11-21 21:03:37,239 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:37 BoogieIcfgContainer
[2023-11-21 21:03:37,239 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-21 21:03:37,242 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-21 21:03:37,242 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-21 21:03:37,245 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-21 21:03:37,246 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:03:33" (1/3) ...
[2023-11-21 21:03:37,247 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501078b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:37, skipping insertion in model container
[2023-11-21 21:03:37,247 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:33" (2/3) ...
[2023-11-21 21:03:37,249 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501078b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:37, skipping insertion in model container
[2023-11-21 21:03:37,249 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:37" (3/3) ...
[2023-11-21 21:03:37,252 INFO  L112   eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-2.i
[2023-11-21 21:03:37,272 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-21 21:03:37,272 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations.
[2023-11-21 21:03:37,331 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-21 21:03:37,338 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;@12de19bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-21 21:03:37,338 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2023-11-21 21:03:37,343 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 108 states, 86 states have (on average 1.755813953488372) internal successors, (151), 102 states have internal predecessors, (151), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13)
[2023-11-21 21:03:37,349 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2023-11-21 21:03:37,350 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 21:03:37,350 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1]
[2023-11-21 21:03:37,351 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)] ===
[2023-11-21 21:03:37,359 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 21:03:37,359 INFO  L85        PathProgramCache]: Analyzing trace with hash 1033039, now seen corresponding path program 1 times
[2023-11-21 21:03:37,369 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 21:03:37,370 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865336227]
[2023-11-21 21:03:37,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 21:03:37,371 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 21:03:37,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 21:03:37,591 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-21 21:03:37,592 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 21:03:37,592 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865336227]
[2023-11-21 21:03:37,593 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865336227] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 21:03:37,593 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 21:03:37,593 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-21 21:03:37,595 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111459962]
[2023-11-21 21:03:37,596 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 21:03:37,602 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-21 21:03:37,602 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 21:03:37,637 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-21 21:03:37,638 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-21 21:03:37,641 INFO  L87              Difference]: Start difference. First operand  has 108 states, 86 states have (on average 1.755813953488372) internal successors, (151), 102 states have internal predecessors, (151), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand  has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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)
[2023-11-21 21:03:39,716 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:03:41,730 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:03:42,463 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 21:03:42,464 INFO  L93              Difference]: Finished difference Result 214 states and 353 transitions.
[2023-11-21 21:03:42,471 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-21 21:03:42,472 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3
[2023-11-21 21:03:42,472 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 21:03:42,481 INFO  L225             Difference]: With dead ends: 214
[2023-11-21 21:03:42,482 INFO  L226             Difference]: Without dead ends: 91
[2023-11-21 21:03:42,485 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-21 21:03:42,489 INFO  L413           NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2023-11-21 21:03:42,490 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time]
[2023-11-21 21:03:42,508 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2023-11-21 21:03:42,533 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91.
[2023-11-21 21:03:42,535 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 91 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 85 states have internal predecessors, (93), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13)
[2023-11-21 21:03:42,537 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions.
[2023-11-21 21:03:42,538 INFO  L78                 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 3
[2023-11-21 21:03:42,539 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 21:03:42,539 INFO  L495      AbstractCegarLoop]: Abstraction has 91 states and 119 transitions.
[2023-11-21 21:03:42,539 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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)
[2023-11-21 21:03:42,540 INFO  L276                IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions.
[2023-11-21 21:03:42,540 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2023-11-21 21:03:42,540 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 21:03:42,540 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2023-11-21 21:03:42,541 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-21 21:03:42,541 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-21 21:03:42,541 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 21:03:42,542 INFO  L85        PathProgramCache]: Analyzing trace with hash 32271221, now seen corresponding path program 1 times
[2023-11-21 21:03:42,542 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 21:03:42,542 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142569436]
[2023-11-21 21:03:42,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 21:03:42,543 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 21:03:42,556 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 21:03:42,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-21 21:03:42,589 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 21:03:42,589 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142569436]
[2023-11-21 21:03:42,590 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142569436] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 21:03:42,590 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 21:03:42,590 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-21 21:03:42,590 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721850701]
[2023-11-21 21:03:42,591 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 21:03:42,592 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-21 21:03:42,592 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 21:03:42,592 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-21 21:03:42,593 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-21 21:03:42,593 INFO  L87              Difference]: Start difference. First operand 91 states and 119 transitions. Second operand  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2023-11-21 21:03:44,634 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:03:46,648 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:03:48,729 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:03:50,742 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:03:52,747 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:03:55,245 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []
[2023-11-21 21:03:55,246 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 21:03:55,246 INFO  L93              Difference]: Finished difference Result 238 states and 303 transitions.
[2023-11-21 21:03:55,251 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-21 21:03:55,251 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4
[2023-11-21 21:03:55,251 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 21:03:55,253 INFO  L225             Difference]: With dead ends: 238
[2023-11-21 21:03:55,253 INFO  L226             Difference]: Without dead ends: 147
[2023-11-21 21:03:55,254 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-21 21:03:55,256 INFO  L413           NwaCegarLoop]: 99 mSDtfsCounter, 60 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time
[2023-11-21 21:03:55,257 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 195 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 5 Unknown, 0 Unchecked, 12.6s Time]
[2023-11-21 21:03:55,258 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2023-11-21 21:03:55,272 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 98.
[2023-11-21 21:03:55,273 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 98 states, 78 states have (on average 1.294871794871795) internal successors, (101), 92 states have internal predecessors, (101), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13)
[2023-11-21 21:03:55,275 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions.
[2023-11-21 21:03:55,275 INFO  L78                 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 4
[2023-11-21 21:03:55,275 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 21:03:55,275 INFO  L495      AbstractCegarLoop]: Abstraction has 98 states and 127 transitions.
[2023-11-21 21:03:55,276 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2023-11-21 21:03:55,276 INFO  L276                IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions.
[2023-11-21 21:03:55,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2023-11-21 21:03:55,276 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 21:03:55,277 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2023-11-21 21:03:55,277 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-21 21:03:55,277 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-21 21:03:55,278 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 21:03:55,278 INFO  L85        PathProgramCache]: Analyzing trace with hash 32024268, now seen corresponding path program 1 times
[2023-11-21 21:03:55,278 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 21:03:55,278 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297651098]
[2023-11-21 21:03:55,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 21:03:55,279 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 21:03:55,301 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 21:03:55,301 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958963386]
[2023-11-21 21:03:55,302 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 21:03:55,302 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 21:03:55,302 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 21:03:55,306 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 21:03:55,333 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-21 21:03:55,496 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 21:03:55,499 INFO  L262         TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-21 21:03:55,504 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 21:03:55,519 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-21 21:03:55,520 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-21 21:03:55,520 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 21:03:55,520 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297651098]
[2023-11-21 21:03:55,521 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 21:03:55,521 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958963386]
[2023-11-21 21:03:55,521 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958963386] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 21:03:55,521 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 21:03:55,522 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-21 21:03:55,522 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585141820]
[2023-11-21 21:03:55,522 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 21:03:55,522 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-21 21:03:55,523 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 21:03:55,523 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-21 21:03:55,524 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-21 21:03:55,524 INFO  L87              Difference]: Start difference. First operand 98 states and 127 transitions. Second operand  has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2023-11-21 21:03:57,561 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:03:59,578 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:01,661 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:04,335 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 21:04:04,335 INFO  L93              Difference]: Finished difference Result 147 states and 182 transitions.
[2023-11-21 21:04:04,338 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-21 21:04:04,339 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4
[2023-11-21 21:04:04,339 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 21:04:04,343 INFO  L225             Difference]: With dead ends: 147
[2023-11-21 21:04:04,343 INFO  L226             Difference]: Without dead ends: 146
[2023-11-21 21:04:04,343 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
[2023-11-21 21:04:04,345 INFO  L413           NwaCegarLoop]: 108 mSDtfsCounter, 57 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time
[2023-11-21 21:04:04,346 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 203 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time]
[2023-11-21 21:04:04,376 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2023-11-21 21:04:04,388 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 98.
[2023-11-21 21:04:04,389 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 98 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 92 states have internal predecessors, (100), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13)
[2023-11-21 21:04:04,390 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 126 transitions.
[2023-11-21 21:04:04,391 INFO  L78                 Accepts]: Start accepts. Automaton has 98 states and 126 transitions. Word has length 4
[2023-11-21 21:04:04,391 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 21:04:04,391 INFO  L495      AbstractCegarLoop]: Abstraction has 98 states and 126 transitions.
[2023-11-21 21:04:04,391 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2023-11-21 21:04:04,392 INFO  L276                IsEmpty]: Start isEmpty. Operand 98 states and 126 transitions.
[2023-11-21 21:04:04,393 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2023-11-21 21:04:04,393 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 21:04:04,393 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]
[2023-11-21 21:04:04,419 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-21 21:04:04,608 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2023-11-21 21:04:04,608 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-21 21:04:04,609 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 21:04:04,609 INFO  L85        PathProgramCache]: Analyzing trace with hash -1769047643, now seen corresponding path program 1 times
[2023-11-21 21:04:04,609 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 21:04:04,609 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274596822]
[2023-11-21 21:04:04,609 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 21:04:04,610 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 21:04:04,723 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 21:04:04,726 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031401741]
[2023-11-21 21:04:04,726 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 21:04:04,726 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 21:04:04,726 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 21:04:04,728 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 21:04:04,752 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-21 21:04:05,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 21:04:05,068 INFO  L262         TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-21 21:04:05,072 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 21:04:05,174 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-21 21:04:05,175 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-21 21:04:05,175 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 21:04:05,175 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274596822]
[2023-11-21 21:04:05,175 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 21:04:05,176 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031401741]
[2023-11-21 21:04:05,176 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031401741] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 21:04:05,176 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 21:04:05,176 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-21 21:04:05,177 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004582362]
[2023-11-21 21:04:05,177 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 21:04:05,177 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-21 21:04:05,177 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 21:04:05,178 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-21 21:04:05,180 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-21 21:04:05,181 INFO  L87              Difference]: Start difference. First operand 98 states and 126 transitions. Second operand  has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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)
[2023-11-21 21:04:07,215 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:09,219 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:11,232 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:13,114 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:13,995 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 21:04:13,996 INFO  L93              Difference]: Finished difference Result 98 states and 126 transitions.
[2023-11-21 21:04:14,001 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-21 21:04:14,001 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31
[2023-11-21 21:04:14,001 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 21:04:14,003 INFO  L225             Difference]: With dead ends: 98
[2023-11-21 21:04:14,003 INFO  L226             Difference]: Without dead ends: 97
[2023-11-21 21:04:14,003 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-21 21:04:14,004 INFO  L413           NwaCegarLoop]: 95 mSDtfsCounter, 60 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time
[2023-11-21 21:04:14,005 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 205 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time]
[2023-11-21 21:04:14,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2023-11-21 21:04:14,030 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2023-11-21 21:04:14,030 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 91 states have internal predecessors, (99), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13)
[2023-11-21 21:04:14,032 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions.
[2023-11-21 21:04:14,032 INFO  L78                 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 31
[2023-11-21 21:04:14,032 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 21:04:14,032 INFO  L495      AbstractCegarLoop]: Abstraction has 97 states and 125 transitions.
[2023-11-21 21:04:14,033 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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)
[2023-11-21 21:04:14,033 INFO  L276                IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions.
[2023-11-21 21:04:14,034 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2023-11-21 21:04:14,034 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 21:04:14,035 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]
[2023-11-21 21:04:14,053 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-21 21:04:14,245 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 21:04:14,246 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-21 21:04:14,246 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 21:04:14,246 INFO  L85        PathProgramCache]: Analyzing trace with hash 994098680, now seen corresponding path program 1 times
[2023-11-21 21:04:14,247 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 21:04:14,247 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871008517]
[2023-11-21 21:04:14,247 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 21:04:14,247 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 21:04:14,342 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 21:04:14,344 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692917727]
[2023-11-21 21:04:14,345 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 21:04:14,345 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 21:04:14,345 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 21:04:14,348 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 21:04:14,353 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-21 21:04:14,647 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 21:04:14,650 INFO  L262         TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-21 21:04:14,654 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 21:04:14,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-21 21:04:14,737 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-21 21:04:14,740 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 21:04:14,740 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871008517]
[2023-11-21 21:04:14,740 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 21:04:14,741 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692917727]
[2023-11-21 21:04:14,741 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [692917727] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 21:04:14,741 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 21:04:14,741 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-21 21:04:14,741 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491275844]
[2023-11-21 21:04:14,742 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 21:04:14,747 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-21 21:04:14,748 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 21:04:14,748 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-21 21:04:14,749 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-21 21:04:14,750 INFO  L87              Difference]: Start difference. First operand 97 states and 125 transitions. Second operand  has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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)
[2023-11-21 21:04:16,832 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:18,854 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:20,863 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:22,957 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:24,962 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:26,966 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:29,349 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []
[2023-11-21 21:04:29,607 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 21:04:29,607 INFO  L93              Difference]: Finished difference Result 231 states and 295 transitions.
[2023-11-21 21:04:29,612 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-21 21:04:29,613 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32
[2023-11-21 21:04:29,613 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 21:04:29,615 INFO  L225             Difference]: With dead ends: 231
[2023-11-21 21:04:29,615 INFO  L226             Difference]: Without dead ends: 140
[2023-11-21 21:04:29,616 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-21 21:04:29,617 INFO  L413           NwaCegarLoop]: 95 mSDtfsCounter, 69 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time
[2023-11-21 21:04:29,617 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 283 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 5 Unknown, 0 Unchecked, 14.8s Time]
[2023-11-21 21:04:29,618 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2023-11-21 21:04:29,632 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140.
[2023-11-21 21:04:29,633 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 140 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 131 states have internal predecessors, (142), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16)
[2023-11-21 21:04:29,635 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 174 transitions.
[2023-11-21 21:04:29,635 INFO  L78                 Accepts]: Start accepts. Automaton has 140 states and 174 transitions. Word has length 32
[2023-11-21 21:04:29,636 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 21:04:29,636 INFO  L495      AbstractCegarLoop]: Abstraction has 140 states and 174 transitions.
[2023-11-21 21:04:29,636 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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)
[2023-11-21 21:04:29,636 INFO  L276                IsEmpty]: Start isEmpty. Operand 140 states and 174 transitions.
[2023-11-21 21:04:29,637 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2023-11-21 21:04:29,638 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 21:04:29,638 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]
[2023-11-21 21:04:29,665 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-21 21:04:29,860 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 21:04:29,860 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2023-11-21 21:04:29,861 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 21:04:29,861 INFO  L85        PathProgramCache]: Analyzing trace with hash 1395528750, now seen corresponding path program 1 times
[2023-11-21 21:04:29,861 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 21:04:29,861 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675585897]
[2023-11-21 21:04:29,861 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 21:04:29,861 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 21:04:29,943 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 21:04:29,944 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037181914]
[2023-11-21 21:04:29,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 21:04:29,945 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 21:04:29,945 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 21:04:29,946 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 21:04:29,952 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30188b70-4297-40b4-aa04-1d5604ce3e4f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-21 21:04:30,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 21:04:30,259 INFO  L262         TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-21 21:04:30,262 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 21:04:30,350 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-21 21:04:30,351 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-21 21:04:30,456 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-21 21:04:30,457 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 21:04:30,458 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675585897]
[2023-11-21 21:04:30,458 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 21:04:30,458 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037181914]
[2023-11-21 21:04:30,458 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037181914] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-21 21:04:30,458 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-21 21:04:30,459 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2023-11-21 21:04:30,459 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770262993]
[2023-11-21 21:04:30,459 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-21 21:04:30,460 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-21 21:04:30,461 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 21:04:30,463 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-21 21:04:30,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-11-21 21:04:30,464 INFO  L87              Difference]: Start difference. First operand 140 states and 174 transitions. Second operand  has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 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)
[2023-11-21 21:04:32,497 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:34,500 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:36,503 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-21 21:04:38,718 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []