./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound50.c --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_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/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_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/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_e57dcf99-d680-441d-b614-1b40695f3ce7/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 0ac0f213d1d000e527ab073eb0dd4288784176d966909606abb71d9dc425fd71
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-527bcce
[2023-11-21 22:04:50,200 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-21 22:04:50,275 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf
[2023-11-21 22:04:50,281 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-21 22:04:50,282 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-21 22:04:50,310 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-21 22:04:50,311 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-21 22:04:50,311 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-21 22:04:50,312 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-21 22:04:50,313 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-21 22:04:50,313 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-21 22:04:50,314 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-21 22:04:50,315 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-21 22:04:50,316 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-21 22:04:50,316 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-21 22:04:50,317 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-21 22:04:50,317 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-21 22:04:50,318 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-21 22:04:50,318 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-21 22:04:50,319 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-21 22:04:50,319 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-21 22:04:50,320 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-21 22:04:50,320 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-21 22:04:50,321 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-21 22:04:50,321 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-11-21 22:04:50,322 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-21 22:04:50,322 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-21 22:04:50,323 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-21 22:04:50,323 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-21 22:04:50,324 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-21 22:04:50,324 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-21 22:04:50,325 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-21 22:04:50,325 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-21 22:04:50,326 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-21 22:04:50,326 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-21 22:04:50,326 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-21 22:04:50,327 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-21 22:04:50,327 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-21 22:04:50,328 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-21 22:04:50,328 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-21 22:04:50,329 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-21 22:04:50,333 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-21 22:04:50,334 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-21 22:04:50,334 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-21 22:04:50,335 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_e57dcf99-d680-441d-b614-1b40695f3ce7/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_e57dcf99-d680-441d-b614-1b40695f3ce7/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 -> 0ac0f213d1d000e527ab073eb0dd4288784176d966909606abb71d9dc425fd71
[2023-11-21 22:04:50,645 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-21 22:04:50,667 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-21 22:04:50,670 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-21 22:04:50,671 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-21 22:04:50,671 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-21 22:04:50,673 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound50.c
[2023-11-21 22:04:53,896 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-21 22:04:54,140 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-21 22:04:54,140 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound50.c
[2023-11-21 22:04:54,150 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/data/a4b8cb1fb/99d457053e7b4dce9e2a2bbef013137e/FLAGec559bb59
[2023-11-21 22:04:54,166 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/data/a4b8cb1fb/99d457053e7b4dce9e2a2bbef013137e
[2023-11-21 22:04:54,169 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-21 22:04:54,170 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-21 22:04:54,172 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-21 22:04:54,172 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-21 22:04:54,178 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-21 22:04:54,179 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,180 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c40dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54, skipping insertion in model container
[2023-11-21 22:04:54,181 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,205 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-21 22:04:54,421 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-21 22:04:54,432 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-21 22:04:54,465 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-21 22:04:54,480 INFO  L206         MainTranslator]: Completed translation
[2023-11-21 22:04:54,481 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54 WrapperNode
[2023-11-21 22:04:54,481 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-21 22:04:54,483 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-21 22:04:54,483 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-21 22:04:54,483 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-21 22:04:54,491 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,498 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,532 INFO  L138                Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 155
[2023-11-21 22:04:54,532 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-21 22:04:54,533 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-21 22:04:54,533 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-21 22:04:54,533 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-21 22:04:54,547 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,547 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,549 INFO  L184        PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,559 INFO  L187           HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2]
[2023-11-21 22:04:54,560 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,560 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,569 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,574 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,575 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,577 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,579 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-21 22:04:54,580 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-21 22:04:54,581 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-21 22:04:54,581 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-21 22:04:54,582 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (1/1) ...
[2023-11-21 22:04:54,604 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-21 22:04:54,621 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:04:54,634 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-21 22:04:54,648 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-21 22:04:54,678 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-21 22:04:54,679 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-11-21 22:04:54,679 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-11-21 22:04:54,679 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-21 22:04:54,679 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-21 22:04:54,680 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-21 22:04:54,680 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-11-21 22:04:54,680 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-11-21 22:04:54,745 INFO  L240             CfgBuilder]: Building ICFG
[2023-11-21 22:04:54,748 INFO  L266             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-21 22:04:55,341 INFO  L281             CfgBuilder]: Performing block encoding
[2023-11-21 22:04:55,396 INFO  L303             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-21 22:04:55,396 INFO  L308             CfgBuilder]: Removed 3 assume(true) statements.
[2023-11-21 22:04:55,398 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:04:55 BoogieIcfgContainer
[2023-11-21 22:04:55,399 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-21 22:04:55,401 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-21 22:04:55,402 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-21 22:04:55,405 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-21 22:04:55,410 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:04:54" (1/3) ...
[2023-11-21 22:04:55,411 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a253f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:04:55, skipping insertion in model container
[2023-11-21 22:04:55,411 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54" (2/3) ...
[2023-11-21 22:04:55,412 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a253f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:04:55, skipping insertion in model container
[2023-11-21 22:04:55,412 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:04:55" (3/3) ...
[2023-11-21 22:04:55,413 INFO  L112   eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound50.c
[2023-11-21 22:04:55,439 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-21 22:04:55,440 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations.
[2023-11-21 22:04:55,516 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-21 22:04:55,523 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;@51a7427, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-21 22:04:55,523 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 92 error locations.
[2023-11-21 22:04:55,529 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 206 states, 103 states have (on average 1.9514563106796117) internal successors, (201), 195 states have internal predecessors, (201), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2023-11-21 22:04:55,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-11-21 22:04:55,559 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:04:55,560 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1]
[2023-11-21 22:04:55,562 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:04:55,585 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:04:55,585 INFO  L85        PathProgramCache]: Analyzing trace with hash -388714207, now seen corresponding path program 1 times
[2023-11-21 22:04:55,619 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:04:55,621 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358477814]
[2023-11-21 22:04:55,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:55,623 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:04:55,738 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:55,853 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-21 22:04:55,855 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:55,862 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2023-11-21 22:04:55,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:55,875 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-21 22:04:55,875 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:04:55,876 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358477814]
[2023-11-21 22:04:55,877 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358477814] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 22:04:55,877 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 22:04:55,877 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-21 22:04:55,879 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697340050]
[2023-11-21 22:04:55,880 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 22:04:55,884 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-21 22:04:55,885 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:04:55,914 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-21 22:04:55,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-21 22:04:55,917 INFO  L87              Difference]: Start difference. First operand  has 206 states, 103 states have (on average 1.9514563106796117) internal successors, (201), 195 states have internal predecessors, (201), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand  has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-11-21 22:04:56,016 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:04:56,016 INFO  L93              Difference]: Finished difference Result 368 states and 395 transitions.
[2023-11-21 22:04:56,017 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-21 22:04:56,019 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 9
[2023-11-21 22:04:56,019 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:04:56,029 INFO  L225             Difference]: With dead ends: 368
[2023-11-21 22:04:56,031 INFO  L226             Difference]: Without dead ends: 189
[2023-11-21 22:04:56,036 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 22:04:56,041 INFO  L413           NwaCegarLoop]: 174 mSDtfsCounter, 179 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-21 22:04:56,043 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 183 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-21 22:04:56,063 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 189 states.
[2023-11-21 22:04:56,114 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189.
[2023-11-21 22:04:56,118 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 189 states, 102 states have (on average 1.7843137254901962) internal successors, (182), 179 states have internal predecessors, (182), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-11-21 22:04:56,124 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 196 transitions.
[2023-11-21 22:04:56,126 INFO  L78                 Accepts]: Start accepts. Automaton has 189 states and 196 transitions. Word has length 9
[2023-11-21 22:04:56,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:04:56,127 INFO  L495      AbstractCegarLoop]: Abstraction has 189 states and 196 transitions.
[2023-11-21 22:04:56,128 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-11-21 22:04:56,128 INFO  L276                IsEmpty]: Start isEmpty. Operand 189 states and 196 transitions.
[2023-11-21 22:04:56,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-21 22:04:56,129 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:04:56,130 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-21 22:04:56,130 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-21 22:04:56,130 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:04:56,131 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:04:56,131 INFO  L85        PathProgramCache]: Analyzing trace with hash 834761510, now seen corresponding path program 1 times
[2023-11-21 22:04:56,132 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:04:56,132 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404992326]
[2023-11-21 22:04:56,132 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:56,132 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:04:56,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:56,190 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-21 22:04:56,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:56,197 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2023-11-21 22:04:56,200 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:56,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-21 22:04:56,209 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:04:56,209 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404992326]
[2023-11-21 22:04:56,209 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404992326] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 22:04:56,210 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 22:04:56,210 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-21 22:04:56,210 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143261820]
[2023-11-21 22:04:56,210 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 22:04:56,212 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-21 22:04:56,212 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:04:56,213 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-21 22:04:56,213 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-21 22:04:56,214 INFO  L87              Difference]: Start difference. First operand 189 states and 196 transitions. Second operand  has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-11-21 22:04:56,264 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:04:56,264 INFO  L93              Difference]: Finished difference Result 189 states and 196 transitions.
[2023-11-21 22:04:56,265 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-21 22:04:56,265 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 10
[2023-11-21 22:04:56,266 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:04:56,267 INFO  L225             Difference]: With dead ends: 189
[2023-11-21 22:04:56,268 INFO  L226             Difference]: Without dead ends: 185
[2023-11-21 22:04:56,268 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 22:04:56,270 INFO  L413           NwaCegarLoop]: 171 mSDtfsCounter, 173 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-21 22:04:56,271 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 179 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-21 22:04:56,272 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 185 states.
[2023-11-21 22:04:56,284 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185.
[2023-11-21 22:04:56,285 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 185 states, 102 states have (on average 1.7450980392156863) internal successors, (178), 175 states have internal predecessors, (178), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-11-21 22:04:56,287 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 192 transitions.
[2023-11-21 22:04:56,287 INFO  L78                 Accepts]: Start accepts. Automaton has 185 states and 192 transitions. Word has length 10
[2023-11-21 22:04:56,288 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:04:56,288 INFO  L495      AbstractCegarLoop]: Abstraction has 185 states and 192 transitions.
[2023-11-21 22:04:56,288 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-11-21 22:04:56,289 INFO  L276                IsEmpty]: Start isEmpty. Operand 185 states and 192 transitions.
[2023-11-21 22:04:56,289 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2023-11-21 22:04:56,289 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:04:56,290 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-21 22:04:56,290 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-21 22:04:56,290 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:04:56,291 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:04:56,291 INFO  L85        PathProgramCache]: Analyzing trace with hash -1074087318, now seen corresponding path program 1 times
[2023-11-21 22:04:56,291 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:04:56,292 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402208706]
[2023-11-21 22:04:56,292 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:56,292 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:04:56,307 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:04:56,307 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923936704]
[2023-11-21 22:04:56,307 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:56,308 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:04:56,308 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:04:56,310 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:04:56,346 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-21 22:04:56,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:56,413 INFO  L262         TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-21 22:04:56,420 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:04:56,556 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-21 22:04:56,557 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-21 22:04:56,557 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:04:56,557 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402208706]
[2023-11-21 22:04:56,558 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:04:56,558 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923936704]
[2023-11-21 22:04:56,558 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [923936704] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 22:04:56,558 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 22:04:56,559 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-21 22:04:56,559 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46098023]
[2023-11-21 22:04:56,559 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 22:04:56,560 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-21 22:04:56,560 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:04:56,561 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-21 22:04:56,561 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-21 22:04:56,561 INFO  L87              Difference]: Start difference. First operand 185 states and 192 transitions. Second operand  has 4 states, 2 states have (on average 5.0) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2023-11-21 22:04:56,676 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:04:56,676 INFO  L93              Difference]: Finished difference Result 185 states and 192 transitions.
[2023-11-21 22:04:56,676 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-21 22:04:56,677 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 2 states have (on average 5.0) internal successors, (10), 4 states have internal predecessors, (10), 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 14
[2023-11-21 22:04:56,677 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:04:56,681 INFO  L225             Difference]: With dead ends: 185
[2023-11-21 22:04:56,681 INFO  L226             Difference]: Without dead ends: 183
[2023-11-21 22:04:56,681 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-21 22:04:56,685 INFO  L413           NwaCegarLoop]: 167 mSDtfsCounter, 167 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-21 22:04:56,687 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 337 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-21 22:04:56,689 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2023-11-21 22:04:56,710 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183.
[2023-11-21 22:04:56,715 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 183 states, 102 states have (on average 1.7254901960784315) internal successors, (176), 173 states have internal predecessors, (176), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-11-21 22:04:56,716 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 190 transitions.
[2023-11-21 22:04:56,716 INFO  L78                 Accepts]: Start accepts. Automaton has 183 states and 190 transitions. Word has length 14
[2023-11-21 22:04:56,717 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:04:56,717 INFO  L495      AbstractCegarLoop]: Abstraction has 183 states and 190 transitions.
[2023-11-21 22:04:56,717 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 2 states have (on average 5.0) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2023-11-21 22:04:56,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 183 states and 190 transitions.
[2023-11-21 22:04:56,719 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2023-11-21 22:04:56,720 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:04:56,720 INFO  L195           NwaCegarLoop]: trace histogram [4, 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 22:04:56,753 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-21 22:04:56,941 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:04:56,942 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:04:56,942 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:04:56,942 INFO  L85        PathProgramCache]: Analyzing trace with hash -1171494229, now seen corresponding path program 1 times
[2023-11-21 22:04:56,942 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:04:56,943 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629137129]
[2023-11-21 22:04:56,943 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:56,943 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:04:56,968 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:04:56,968 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300555407]
[2023-11-21 22:04:56,968 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:56,968 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:04:56,969 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:04:56,976 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:04:56,977 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-21 22:04:57,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:57,039 INFO  L262         TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-21 22:04:57,041 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:04:57,158 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-11-21 22:04:57,158 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-21 22:04:57,256 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:04:57,256 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629137129]
[2023-11-21 22:04:57,256 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:04:57,257 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300555407]
[2023-11-21 22:04:57,257 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [300555407] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-21 22:04:57,257 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2023-11-21 22:04:57,257 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3
[2023-11-21 22:04:57,258 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138517711]
[2023-11-21 22:04:57,258 INFO  L85    oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2023-11-21 22:04:57,258 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-21 22:04:57,259 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:04:57,260 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-21 22:04:57,260 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-21 22:04:57,260 INFO  L87              Difference]: Start difference. First operand 183 states and 190 transitions. Second operand  has 4 states, 2 states have (on average 8.5) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)
[2023-11-21 22:04:57,383 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:04:57,384 INFO  L93              Difference]: Finished difference Result 183 states and 190 transitions.
[2023-11-21 22:04:57,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-21 22:04:57,385 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 2 states have (on average 8.5) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27
[2023-11-21 22:04:57,385 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:04:57,387 INFO  L225             Difference]: With dead ends: 183
[2023-11-21 22:04:57,387 INFO  L226             Difference]: Without dead ends: 180
[2023-11-21 22:04:57,387 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-21 22:04:57,390 INFO  L413           NwaCegarLoop]: 151 mSDtfsCounter, 157 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-21 22:04:57,390 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 305 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-21 22:04:57,391 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 180 states.
[2023-11-21 22:04:57,407 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180.
[2023-11-21 22:04:57,408 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 180 states, 102 states have (on average 1.696078431372549) internal successors, (173), 170 states have internal predecessors, (173), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-11-21 22:04:57,409 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 187 transitions.
[2023-11-21 22:04:57,409 INFO  L78                 Accepts]: Start accepts. Automaton has 180 states and 187 transitions. Word has length 27
[2023-11-21 22:04:57,410 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:04:57,410 INFO  L495      AbstractCegarLoop]: Abstraction has 180 states and 187 transitions.
[2023-11-21 22:04:57,410 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 2 states have (on average 8.5) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)
[2023-11-21 22:04:57,410 INFO  L276                IsEmpty]: Start isEmpty. Operand 180 states and 187 transitions.
[2023-11-21 22:04:57,411 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2023-11-21 22:04:57,411 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:04:57,412 INFO  L195           NwaCegarLoop]: trace histogram [4, 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 22:04:57,441 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-21 22:04:57,632 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2023-11-21 22:04:57,633 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:04:57,633 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:04:57,634 INFO  L85        PathProgramCache]: Analyzing trace with hash -1956582666, now seen corresponding path program 1 times
[2023-11-21 22:04:57,634 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:04:57,634 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353950119]
[2023-11-21 22:04:57,634 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:57,634 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:04:57,654 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:04:57,654 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386077201]
[2023-11-21 22:04:57,655 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:57,655 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:04:57,655 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:04:57,658 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:04:57,659 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-21 22:04:57,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:57,709 INFO  L262         TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-21 22:04:57,711 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:04:57,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-11-21 22:04:57,846 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-21 22:04:57,846 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:04:57,846 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353950119]
[2023-11-21 22:04:57,846 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:04:57,846 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386077201]
[2023-11-21 22:04:57,847 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386077201] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 22:04:57,847 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 22:04:57,847 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-21 22:04:57,847 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380417921]
[2023-11-21 22:04:57,847 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 22:04:57,848 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-21 22:04:57,848 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:04:57,849 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-21 22:04:57,849 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-21 22:04:57,849 INFO  L87              Difference]: Start difference. First operand 180 states and 187 transitions. Second operand  has 5 states, 3 states have (on average 6.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4)
[2023-11-21 22:04:58,035 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:04:58,035 INFO  L93              Difference]: Finished difference Result 180 states and 187 transitions.
[2023-11-21 22:04:58,036 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-21 22:04:58,036 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 3 states have (on average 6.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28
[2023-11-21 22:04:58,036 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:04:58,038 INFO  L225             Difference]: With dead ends: 180
[2023-11-21 22:04:58,038 INFO  L226             Difference]: Without dead ends: 179
[2023-11-21 22:04:58,038 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-21 22:04:58,040 INFO  L413           NwaCegarLoop]: 151 mSDtfsCounter, 155 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-21 22:04:58,047 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 319 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-21 22:04:58,049 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 179 states.
[2023-11-21 22:04:58,071 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179.
[2023-11-21 22:04:58,074 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 179 states, 102 states have (on average 1.6862745098039216) internal successors, (172), 169 states have internal predecessors, (172), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-11-21 22:04:58,076 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 186 transitions.
[2023-11-21 22:04:58,077 INFO  L78                 Accepts]: Start accepts. Automaton has 179 states and 186 transitions. Word has length 28
[2023-11-21 22:04:58,078 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:04:58,078 INFO  L495      AbstractCegarLoop]: Abstraction has 179 states and 186 transitions.
[2023-11-21 22:04:58,078 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 3 states have (on average 6.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4)
[2023-11-21 22:04:58,078 INFO  L276                IsEmpty]: Start isEmpty. Operand 179 states and 186 transitions.
[2023-11-21 22:04:58,079 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2023-11-21 22:04:58,080 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:04:58,080 INFO  L195           NwaCegarLoop]: trace histogram [4, 1, 1, 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 22:04:58,106 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-21 22:04:58,301 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:04:58,301 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:04:58,301 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:04:58,302 INFO  L85        PathProgramCache]: Analyzing trace with hash 919735992, now seen corresponding path program 1 times
[2023-11-21 22:04:58,302 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:04:58,302 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602853636]
[2023-11-21 22:04:58,302 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:58,302 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:04:58,326 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:04:58,329 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250571659]
[2023-11-21 22:04:58,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:58,329 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:04:58,332 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:04:58,334 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:04:58,356 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-21 22:04:58,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:58,397 INFO  L262         TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-21 22:04:58,401 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:04:58,433 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-11-21 22:04:58,434 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-21 22:04:58,434 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:04:58,434 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602853636]
[2023-11-21 22:04:58,434 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:04:58,434 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250571659]
[2023-11-21 22:04:58,435 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [250571659] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 22:04:58,435 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 22:04:58,435 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-21 22:04:58,435 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194198129]
[2023-11-21 22:04:58,436 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 22:04:58,436 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-21 22:04:58,437 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:04:58,437 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-21 22:04:58,437 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-21 22:04:58,438 INFO  L87              Difference]: Start difference. First operand 179 states and 186 transitions. Second operand  has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2023-11-21 22:04:58,628 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:04:58,629 INFO  L93              Difference]: Finished difference Result 320 states and 338 transitions.
[2023-11-21 22:04:58,629 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-21 22:04:58,629 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30
[2023-11-21 22:04:58,630 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:04:58,632 INFO  L225             Difference]: With dead ends: 320
[2023-11-21 22:04:58,632 INFO  L226             Difference]: Without dead ends: 314
[2023-11-21 22:04:58,633 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 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 22:04:58,635 INFO  L413           NwaCegarLoop]: 149 mSDtfsCounter, 137 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-21 22:04:58,635 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 290 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-21 22:04:58,638 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 314 states.
[2023-11-21 22:04:58,655 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 242.
[2023-11-21 22:04:58,656 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 242 states, 162 states have (on average 1.7098765432098766) internal successors, (277), 229 states have internal predecessors, (277), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-11-21 22:04:58,658 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 297 transitions.
[2023-11-21 22:04:58,658 INFO  L78                 Accepts]: Start accepts. Automaton has 242 states and 297 transitions. Word has length 30
[2023-11-21 22:04:58,659 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:04:58,659 INFO  L495      AbstractCegarLoop]: Abstraction has 242 states and 297 transitions.
[2023-11-21 22:04:58,659 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2023-11-21 22:04:58,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 242 states and 297 transitions.
[2023-11-21 22:04:58,660 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2023-11-21 22:04:58,661 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:04:58,661 INFO  L195           NwaCegarLoop]: trace histogram [4, 1, 1, 1, 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 22:04:58,681 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-21 22:04:58,877 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-21 22:04:58,877 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:04:58,877 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:04:58,877 INFO  L85        PathProgramCache]: Analyzing trace with hash -1552955242, now seen corresponding path program 1 times
[2023-11-21 22:04:58,878 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:04:58,878 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174542034]
[2023-11-21 22:04:58,878 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:58,878 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:04:58,902 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:04:58,902 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499785555]
[2023-11-21 22:04:58,903 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:04:58,903 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:04:58,903 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:04:58,904 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:04:58,920 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-21 22:04:58,961 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:04:58,962 INFO  L262         TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-21 22:04:58,964 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:05:01,002 WARN  L876   $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~R~0#1| Int)) (let ((.cse0 (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|))) (and (<= (+ |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~A~0#1|) .cse0) (<= .cse0 9223372036854775807)))) is different from true
[2023-11-21 22:05:01,029 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-11-21 22:05:01,029 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-21 22:05:01,030 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:05:01,030 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174542034]
[2023-11-21 22:05:01,030 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:05:01,030 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499785555]
[2023-11-21 22:05:01,031 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [499785555] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 22:05:01,031 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 22:05:01,031 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-21 22:05:01,031 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989847992]
[2023-11-21 22:05:01,031 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 22:05:01,032 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-21 22:05:01,032 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:05:01,034 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-21 22:05:01,034 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12
[2023-11-21 22:05:01,055 INFO  L87              Difference]: Start difference. First operand 242 states and 297 transitions. Second operand  has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2023-11-21 22:05:03,138 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:05:03,138 INFO  L93              Difference]: Finished difference Result 246 states and 301 transitions.
[2023-11-21 22:05:03,138 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-21 22:05:03,139 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31
[2023-11-21 22:05:03,141 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:05:03,143 INFO  L225             Difference]: With dead ends: 246
[2023-11-21 22:05:03,143 INFO  L226             Difference]: Without dead ends: 245
[2023-11-21 22:05:03,144 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=8, Invalid=6, Unknown=2, NotChecked=4, Total=20
[2023-11-21 22:05:03,145 INFO  L413           NwaCegarLoop]: 167 mSDtfsCounter, 169 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-21 22:05:03,145 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 175 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 186 Unchecked, 0.0s Time]
[2023-11-21 22:05:03,147 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 245 states.
[2023-11-21 22:05:03,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245.
[2023-11-21 22:05:03,165 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 245 states, 165 states have (on average 1.696969696969697) internal successors, (280), 232 states have internal predecessors, (280), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-11-21 22:05:03,168 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 300 transitions.
[2023-11-21 22:05:03,169 INFO  L78                 Accepts]: Start accepts. Automaton has 245 states and 300 transitions. Word has length 31
[2023-11-21 22:05:03,169 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:05:03,171 INFO  L495      AbstractCegarLoop]: Abstraction has 245 states and 300 transitions.
[2023-11-21 22:05:03,171 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2023-11-21 22:05:03,171 INFO  L276                IsEmpty]: Start isEmpty. Operand 245 states and 300 transitions.
[2023-11-21 22:05:03,174 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2023-11-21 22:05:03,174 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:05:03,179 INFO  L195           NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 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 22:05:03,199 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-21 22:05:03,394 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:03,394 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:05:03,394 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:05:03,395 INFO  L85        PathProgramCache]: Analyzing trace with hash -2036333288, now seen corresponding path program 1 times
[2023-11-21 22:05:03,395 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:05:03,395 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122599864]
[2023-11-21 22:05:03,395 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:03,395 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:05:03,406 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:05:03,406 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442902357]
[2023-11-21 22:05:03,406 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:03,407 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:03,407 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:05:03,408 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:05:03,413 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-21 22:05:03,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:05:03,464 INFO  L262         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-21 22:05:03,467 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:05:03,726 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-11-21 22:05:03,726 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-21 22:05:03,988 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:05:03,988 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122599864]
[2023-11-21 22:05:03,989 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:05:03,989 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442902357]
[2023-11-21 22:05:03,989 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [442902357] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-21 22:05:03,989 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2023-11-21 22:05:03,989 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2023-11-21 22:05:03,989 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950703903]
[2023-11-21 22:05:03,990 INFO  L85    oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2023-11-21 22:05:03,990 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-21 22:05:03,990 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:05:03,991 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-21 22:05:03,991 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2023-11-21 22:05:03,991 INFO  L87              Difference]: Start difference. First operand 245 states and 300 transitions. Second operand  has 7 states, 5 states have (on average 4.6) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2023-11-21 22:05:06,290 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:08,307 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:10,426 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:12,491 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:14,496 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:14,518 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:05:14,518 INFO  L93              Difference]: Finished difference Result 323 states and 335 transitions.
[2023-11-21 22:05:14,519 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-21 22:05:14,519 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 5 states have (on average 4.6) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33
[2023-11-21 22:05:14,519 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:05:14,521 INFO  L225             Difference]: With dead ends: 323
[2023-11-21 22:05:14,522 INFO  L226             Difference]: Without dead ends: 317
[2023-11-21 22:05:14,522 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132
[2023-11-21 22:05:14,523 INFO  L413           NwaCegarLoop]: 125 mSDtfsCounter, 706 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 23 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time
[2023-11-21 22:05:14,523 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 382 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 191 Invalid, 5 Unknown, 0 Unchecked, 10.5s Time]
[2023-11-21 22:05:14,525 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 317 states.
[2023-11-21 22:05:14,546 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 242.
[2023-11-21 22:05:14,547 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 242 states, 162 states have (on average 1.6728395061728396) internal successors, (271), 229 states have internal predecessors, (271), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-11-21 22:05:14,548 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions.
[2023-11-21 22:05:14,549 INFO  L78                 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 33
[2023-11-21 22:05:14,549 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:05:14,549 INFO  L495      AbstractCegarLoop]: Abstraction has 242 states and 291 transitions.
[2023-11-21 22:05:14,550 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 5 states have (on average 4.6) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2023-11-21 22:05:14,550 INFO  L276                IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions.
[2023-11-21 22:05:14,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2023-11-21 22:05:14,551 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:05:14,551 INFO  L195           NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 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 22:05:14,577 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-21 22:05:14,769 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:14,769 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:05:14,769 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:05:14,770 INFO  L85        PathProgramCache]: Analyzing trace with hash 1588799898, now seen corresponding path program 1 times
[2023-11-21 22:05:14,770 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:05:14,770 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530376735]
[2023-11-21 22:05:14,770 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:14,770 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:05:14,784 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:05:14,796 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750715953]
[2023-11-21 22:05:14,797 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:14,797 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:14,797 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:05:14,798 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:05:14,824 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-21 22:05:14,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:05:14,865 INFO  L262         TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-21 22:05:14,868 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:05:15,084 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-11-21 22:05:15,084 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-21 22:05:15,254 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-11-21 22:05:15,254 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:05:15,254 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530376735]
[2023-11-21 22:05:15,255 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:05:15,255 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750715953]
[2023-11-21 22:05:15,255 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [750715953] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-21 22:05:15,255 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-21 22:05:15,255 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2023-11-21 22:05:15,255 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259148323]
[2023-11-21 22:05:15,256 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-21 22:05:15,256 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-21 22:05:15,256 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:05:15,257 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-21 22:05:15,257 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-11-21 22:05:15,258 INFO  L87              Difference]: Start difference. First operand 242 states and 291 transitions. Second operand  has 7 states, 5 states have (on average 9.2) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)
[2023-11-21 22:05:17,039 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:05:17,039 INFO  L93              Difference]: Finished difference Result 391 states and 463 transitions.
[2023-11-21 22:05:17,039 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-21 22:05:17,040 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 5 states have (on average 9.2) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 35
[2023-11-21 22:05:17,040 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:05:17,042 INFO  L225             Difference]: With dead ends: 391
[2023-11-21 22:05:17,042 INFO  L226             Difference]: Without dead ends: 364
[2023-11-21 22:05:17,043 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-11-21 22:05:17,043 INFO  L413           NwaCegarLoop]: 83 mSDtfsCounter, 933 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2023-11-21 22:05:17,044 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 257 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2023-11-21 22:05:17,045 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 364 states.
[2023-11-21 22:05:17,068 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 318.
[2023-11-21 22:05:17,068 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 318 states, 252 states have (on average 1.4841269841269842) internal successors, (374), 302 states have internal predecessors, (374), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2023-11-21 22:05:17,070 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 400 transitions.
[2023-11-21 22:05:17,071 INFO  L78                 Accepts]: Start accepts. Automaton has 318 states and 400 transitions. Word has length 35
[2023-11-21 22:05:17,071 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:05:17,071 INFO  L495      AbstractCegarLoop]: Abstraction has 318 states and 400 transitions.
[2023-11-21 22:05:17,071 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 5 states have (on average 9.2) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)
[2023-11-21 22:05:17,072 INFO  L276                IsEmpty]: Start isEmpty. Operand 318 states and 400 transitions.
[2023-11-21 22:05:17,072 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2023-11-21 22:05:17,072 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:05:17,073 INFO  L195           NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:17,098 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-11-21 22:05:17,288 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:17,289 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:05:17,289 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:05:17,289 INFO  L85        PathProgramCache]: Analyzing trace with hash 2123314716, now seen corresponding path program 1 times
[2023-11-21 22:05:17,289 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:05:17,290 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966037395]
[2023-11-21 22:05:17,290 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:17,290 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:05:17,319 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:05:17,328 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624855890]
[2023-11-21 22:05:17,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:17,329 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:17,329 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:05:17,341 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:05:17,394 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-21 22:05:17,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:05:17,465 INFO  L262         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-21 22:05:17,466 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:05:17,497 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-11-21 22:05:17,497 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-21 22:05:17,497 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:05:17,497 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966037395]
[2023-11-21 22:05:17,497 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:05:17,497 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624855890]
[2023-11-21 22:05:17,497 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [624855890] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 22:05:17,497 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 22:05:17,498 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-21 22:05:17,498 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553693150]
[2023-11-21 22:05:17,498 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 22:05:17,498 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-21 22:05:17,498 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:05:17,499 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-21 22:05:17,499 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-21 22:05:17,499 INFO  L87              Difference]: Start difference. First operand 318 states and 400 transitions. Second operand  has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2023-11-21 22:05:17,770 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:05:17,770 INFO  L93              Difference]: Finished difference Result 486 states and 588 transitions.
[2023-11-21 22:05:17,771 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-21 22:05:17,771 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37
[2023-11-21 22:05:17,771 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:05:17,774 INFO  L225             Difference]: With dead ends: 486
[2023-11-21 22:05:17,774 INFO  L226             Difference]: Without dead ends: 445
[2023-11-21 22:05:17,774 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 22:05:17,775 INFO  L413           NwaCegarLoop]: 125 mSDtfsCounter, 102 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-21 22:05:17,775 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 207 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-21 22:05:17,777 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 445 states.
[2023-11-21 22:05:17,804 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 419.
[2023-11-21 22:05:17,805 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 419 states, 350 states have (on average 1.3942857142857144) internal successors, (488), 400 states have internal predecessors, (488), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2023-11-21 22:05:17,808 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 520 transitions.
[2023-11-21 22:05:17,808 INFO  L78                 Accepts]: Start accepts. Automaton has 419 states and 520 transitions. Word has length 37
[2023-11-21 22:05:17,809 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:05:17,809 INFO  L495      AbstractCegarLoop]: Abstraction has 419 states and 520 transitions.
[2023-11-21 22:05:17,809 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2023-11-21 22:05:17,809 INFO  L276                IsEmpty]: Start isEmpty. Operand 419 states and 520 transitions.
[2023-11-21 22:05:17,810 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2023-11-21 22:05:17,811 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:05:17,811 INFO  L195           NwaCegarLoop]: trace histogram [4, 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]
[2023-11-21 22:05:17,836 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-11-21 22:05:18,024 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-21 22:05:18,025 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:05:18,025 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:05:18,025 INFO  L85        PathProgramCache]: Analyzing trace with hash 1378118481, now seen corresponding path program 1 times
[2023-11-21 22:05:18,025 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:05:18,026 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125994628]
[2023-11-21 22:05:18,026 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:18,026 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:05:18,038 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:05:18,038 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70817433]
[2023-11-21 22:05:18,038 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:18,038 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:18,039 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:05:18,040 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:05:18,070 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-21 22:05:18,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:05:18,105 INFO  L262         TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-21 22:05:18,107 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:05:18,185 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-11-21 22:05:18,186 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-21 22:05:18,186 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:05:18,186 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125994628]
[2023-11-21 22:05:18,186 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:05:18,186 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70817433]
[2023-11-21 22:05:18,187 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [70817433] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 22:05:18,187 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 22:05:18,187 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-21 22:05:18,187 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355189596]
[2023-11-21 22:05:18,187 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 22:05:18,188 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-21 22:05:18,188 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:05:18,189 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-21 22:05:18,189 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-21 22:05:18,189 INFO  L87              Difference]: Start difference. First operand 419 states and 520 transitions. Second operand  has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2023-11-21 22:05:18,492 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:05:18,492 INFO  L93              Difference]: Finished difference Result 445 states and 521 transitions.
[2023-11-21 22:05:18,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-21 22:05:18,493 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75
[2023-11-21 22:05:18,493 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:05:18,495 INFO  L225             Difference]: With dead ends: 445
[2023-11-21 22:05:18,496 INFO  L226             Difference]: Without dead ends: 444
[2023-11-21 22:05:18,496 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-21 22:05:18,497 INFO  L413           NwaCegarLoop]: 137 mSDtfsCounter, 71 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-21 22:05:18,497 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 246 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-21 22:05:18,498 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 444 states.
[2023-11-21 22:05:18,555 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 419.
[2023-11-21 22:05:18,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 419 states, 350 states have (on average 1.3885714285714286) internal successors, (486), 400 states have internal predecessors, (486), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2023-11-21 22:05:18,558 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 518 transitions.
[2023-11-21 22:05:18,558 INFO  L78                 Accepts]: Start accepts. Automaton has 419 states and 518 transitions. Word has length 75
[2023-11-21 22:05:18,558 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:05:18,559 INFO  L495      AbstractCegarLoop]: Abstraction has 419 states and 518 transitions.
[2023-11-21 22:05:18,559 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2023-11-21 22:05:18,559 INFO  L276                IsEmpty]: Start isEmpty. Operand 419 states and 518 transitions.
[2023-11-21 22:05:18,560 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2023-11-21 22:05:18,560 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:05:18,560 INFO  L195           NwaCegarLoop]: trace histogram [4, 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]
[2023-11-21 22:05:18,585 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-11-21 22:05:18,760 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:18,761 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:05:18,761 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:05:18,761 INFO  L85        PathProgramCache]: Analyzing trace with hash -227999878, now seen corresponding path program 1 times
[2023-11-21 22:05:18,761 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:05:18,761 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693050888]
[2023-11-21 22:05:18,762 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:18,762 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:05:18,773 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:05:18,778 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484028321]
[2023-11-21 22:05:18,779 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:18,779 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:18,779 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:05:18,780 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:05:18,784 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-21 22:05:18,839 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:05:18,840 INFO  L262         TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-21 22:05:18,843 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:05:19,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-11-21 22:05:19,013 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-21 22:05:19,013 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:05:19,013 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693050888]
[2023-11-21 22:05:19,013 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:05:19,013 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484028321]
[2023-11-21 22:05:19,013 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484028321] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-21 22:05:19,014 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-21 22:05:19,014 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-21 22:05:19,014 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539527546]
[2023-11-21 22:05:19,014 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-21 22:05:19,015 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-21 22:05:19,015 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:05:19,015 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-21 22:05:19,015 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-21 22:05:19,016 INFO  L87              Difference]: Start difference. First operand 419 states and 518 transitions. Second operand  has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2023-11-21 22:05:19,204 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:05:19,204 INFO  L93              Difference]: Finished difference Result 419 states and 518 transitions.
[2023-11-21 22:05:19,205 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-21 22:05:19,205 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76
[2023-11-21 22:05:19,205 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:05:19,208 INFO  L225             Difference]: With dead ends: 419
[2023-11-21 22:05:19,208 INFO  L226             Difference]: Without dead ends: 413
[2023-11-21 22:05:19,209 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-21 22:05:19,210 INFO  L413           NwaCegarLoop]: 53 mSDtfsCounter, 176 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-21 22:05:19,212 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 77 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-21 22:05:19,213 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 413 states.
[2023-11-21 22:05:19,242 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413.
[2023-11-21 22:05:19,243 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 413 states, 350 states have (on average 1.3485714285714285) internal successors, (472), 394 states have internal predecessors, (472), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2023-11-21 22:05:19,246 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 504 transitions.
[2023-11-21 22:05:19,246 INFO  L78                 Accepts]: Start accepts. Automaton has 413 states and 504 transitions. Word has length 76
[2023-11-21 22:05:19,246 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:05:19,247 INFO  L495      AbstractCegarLoop]: Abstraction has 413 states and 504 transitions.
[2023-11-21 22:05:19,247 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2023-11-21 22:05:19,247 INFO  L276                IsEmpty]: Start isEmpty. Operand 413 states and 504 transitions.
[2023-11-21 22:05:19,248 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2023-11-21 22:05:19,248 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:05:19,248 INFO  L195           NwaCegarLoop]: trace histogram [4, 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]
[2023-11-21 22:05:19,273 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-11-21 22:05:19,468 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-21 22:05:19,468 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:05:19,469 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:05:19,469 INFO  L85        PathProgramCache]: Analyzing trace with hash -1898318018, now seen corresponding path program 1 times
[2023-11-21 22:05:19,469 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:05:19,469 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944887572]
[2023-11-21 22:05:19,469 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:19,469 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:05:19,481 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:05:19,483 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894779564]
[2023-11-21 22:05:19,483 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:19,483 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:19,483 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:05:19,484 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:05:19,508 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-21 22:05:19,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:05:19,549 INFO  L262         TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-21 22:05:19,556 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:05:19,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-11-21 22:05:19,824 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-21 22:05:19,980 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-11-21 22:05:19,980 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:05:19,981 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944887572]
[2023-11-21 22:05:19,981 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:05:19,981 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894779564]
[2023-11-21 22:05:19,981 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894779564] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-21 22:05:19,981 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-21 22:05:19,981 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2023-11-21 22:05:19,982 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054421492]
[2023-11-21 22:05:19,982 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-21 22:05:19,983 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-21 22:05:19,983 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:05:19,984 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-21 22:05:19,984 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-11-21 22:05:19,985 INFO  L87              Difference]: Start difference. First operand 413 states and 504 transitions. Second operand  has 10 states, 9 states have (on average 14.0) internal successors, (126), 10 states have internal predecessors, (126), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12)
[2023-11-21 22:05:20,815 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-21 22:05:20,815 INFO  L93              Difference]: Finished difference Result 988 states and 1192 transitions.
[2023-11-21 22:05:20,817 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-11-21 22:05:20,817 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 9 states have (on average 14.0) internal successors, (126), 10 states have internal predecessors, (126), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 80
[2023-11-21 22:05:20,817 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-21 22:05:20,821 INFO  L225             Difference]: With dead ends: 988
[2023-11-21 22:05:20,821 INFO  L226             Difference]: Without dead ends: 597
[2023-11-21 22:05:20,824 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=187, Unknown=0, NotChecked=0, Total=306
[2023-11-21 22:05:20,825 INFO  L413           NwaCegarLoop]: 81 mSDtfsCounter, 956 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-11-21 22:05:20,825 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 287 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-11-21 22:05:20,827 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 597 states.
[2023-11-21 22:05:20,869 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 538.
[2023-11-21 22:05:20,871 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 538 states, 472 states have (on average 1.305084745762712) internal successors, (616), 513 states have internal predecessors, (616), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2023-11-21 22:05:20,874 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 660 transitions.
[2023-11-21 22:05:20,875 INFO  L78                 Accepts]: Start accepts. Automaton has 538 states and 660 transitions. Word has length 80
[2023-11-21 22:05:20,875 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-21 22:05:20,875 INFO  L495      AbstractCegarLoop]: Abstraction has 538 states and 660 transitions.
[2023-11-21 22:05:20,876 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 9 states have (on average 14.0) internal successors, (126), 10 states have internal predecessors, (126), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12)
[2023-11-21 22:05:20,876 INFO  L276                IsEmpty]: Start isEmpty. Operand 538 states and 660 transitions.
[2023-11-21 22:05:20,877 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2023-11-21 22:05:20,878 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-21 22:05:20,878 INFO  L195           NwaCegarLoop]: trace histogram [4, 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]
[2023-11-21 22:05:20,902 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-11-21 22:05:21,097 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:21,097 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] ===
[2023-11-21 22:05:21,098 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-21 22:05:21,098 INFO  L85        PathProgramCache]: Analyzing trace with hash 1281683715, now seen corresponding path program 1 times
[2023-11-21 22:05:21,098 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-21 22:05:21,098 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790831627]
[2023-11-21 22:05:21,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:21,098 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-21 22:05:21,121 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-21 22:05:21,125 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643565318]
[2023-11-21 22:05:21,126 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-21 22:05:21,126 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-21 22:05:21,126 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3
[2023-11-21 22:05:21,127 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-21 22:05:21,186 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57dcf99-d680-441d-b614-1b40695f3ce7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-21 22:05:21,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-21 22:05:21,225 INFO  L262         TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-21 22:05:21,228 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-21 22:05:27,683 WARN  L876   $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~R~0#1| Int)) (let ((.cse0 (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|))) (and (<= (+ |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~A~0#1| 1) .cse0) (<= .cse0 9223372036854775807)))) is different from true
[2023-11-21 22:05:27,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 3 not checked.
[2023-11-21 22:05:27,713 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-21 22:05:27,913 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-11-21 22:05:27,913 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-21 22:05:27,913 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790831627]
[2023-11-21 22:05:27,913 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-21 22:05:27,913 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643565318]
[2023-11-21 22:05:27,913 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [643565318] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-21 22:05:27,913 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-21 22:05:27,914 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2023-11-21 22:05:27,914 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186569244]
[2023-11-21 22:05:27,914 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-21 22:05:27,914 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-21 22:05:27,915 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-21 22:05:27,915 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-21 22:05:27,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=48, Unknown=3, NotChecked=14, Total=90
[2023-11-21 22:05:27,916 INFO  L87              Difference]: Start difference. First operand 538 states and 660 transitions. Second operand  has 10 states, 9 states have (on average 13.0) internal successors, (117), 10 states have internal predecessors, (117), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)
[2023-11-21 22:05:38,219 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:40,227 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:42,241 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:44,247 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:46,255 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:48,261 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:50,266 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:52,275 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:54,282 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2023-11-21 22:05:56,289 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]