./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version e7bb482b
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3f0f6dc4c69710f9b49146a091b787943673df7efabfa4cf3572482098bcc06e
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 21:56:56,039 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 21:56:56,127 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 21:56:56,133 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 21:56:56,134 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 21:56:56,161 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 21:56:56,162 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 21:56:56,163 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 21:56:56,164 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 21:56:56,164 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 21:56:56,165 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 21:56:56,166 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 21:56:56,167 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 21:56:56,167 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 21:56:56,168 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 21:56:56,169 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 21:56:56,169 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 21:56:56,170 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 21:56:56,171 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 21:56:56,171 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 21:56:56,172 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 21:56:56,173 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 21:56:56,173 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 21:56:56,174 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 21:56:56,174 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 21:56:56,175 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 21:56:56,176 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 21:56:56,176 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 21:56:56,177 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 21:56:56,177 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 21:56:56,178 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 21:56:56,179 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 21:56:56,179 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 21:56:56,180 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 21:56:56,180 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 21:56:56,181 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 21:56:56,181 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_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/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_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f0f6dc4c69710f9b49146a091b787943673df7efabfa4cf3572482098bcc06e
[2023-11-06 21:56:56,568 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 21:56:56,601 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 21:56:56,604 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 21:56:56,605 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 21:56:56,606 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 21:56:56,608 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c
[2023-11-06 21:57:00,012 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 21:57:00,488 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 21:57:00,490 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c
[2023-11-06 21:57:00,517 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/data/ea7764a32/b1c42629117f472eb5077e813e089727/FLAG9ad90ccdb
[2023-11-06 21:57:00,533 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/data/ea7764a32/b1c42629117f472eb5077e813e089727
[2023-11-06 21:57:00,536 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 21:57:00,539 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 21:57:00,543 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 21:57:00,544 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 21:57:00,549 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 21:57:00,550 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:00" (1/1) ...
[2023-11-06 21:57:00,551 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d300f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:00, skipping insertion in model container
[2023-11-06 21:57:00,552 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:00" (1/1) ...
[2023-11-06 21:57:00,688 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 21:57:00,973 WARN  L240   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c[1177,1190]
[2023-11-06 21:57:01,859 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 21:57:01,873 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 21:57:01,893 WARN  L240   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c[1177,1190]
[2023-11-06 21:57:02,470 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 21:57:02,488 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 21:57:02,489 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02 WrapperNode
[2023-11-06 21:57:02,489 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 21:57:02,491 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 21:57:02,491 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 21:57:02,491 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 21:57:02,501 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:02,677 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:04,738 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18079
[2023-11-06 21:57:04,738 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 21:57:04,739 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 21:57:04,740 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 21:57:04,740 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 21:57:04,751 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:04,752 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:05,230 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:05,231 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:06,076 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:06,208 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:06,666 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:06,810 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:07,497 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 21:57:07,514 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 21:57:07,515 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 21:57:07,515 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 21:57:07,516 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (1/1) ...
[2023-11-06 21:57:07,533 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 21:57:07,553 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:57:07,578 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 21:57:07,590 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 21:57:07,629 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 21:57:07,632 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 21:57:07,633 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 21:57:07,633 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 21:57:08,574 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 21:57:08,579 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 21:57:23,738 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 21:57:23,788 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 21:57:23,788 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 21:57:23,798 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:23 BoogieIcfgContainer
[2023-11-06 21:57:23,799 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 21:57:23,804 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 21:57:23,805 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 21:57:23,809 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 21:57:23,809 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:00" (1/3) ...
[2023-11-06 21:57:23,811 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6468c6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:23, skipping insertion in model container
[2023-11-06 21:57:23,811 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:02" (2/3) ...
[2023-11-06 21:57:23,811 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6468c6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:23, skipping insertion in model container
[2023-11-06 21:57:23,812 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:23" (3/3) ...
[2023-11-06 21:57:23,813 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.collision.5.prop1-back-serstep.c
[2023-11-06 21:57:23,840 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 21:57:23,840 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 21:57:24,051 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 21:57:24,062 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4afd5cd7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 21:57:24,062 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 21:57:24,083 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4600 states, 4598 states have (on average 1.6768160069595477) internal successors, (7710), 4599 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:24,118 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 376
[2023-11-06 21:57:24,119 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:57:24,120 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 21:57:24,121 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:57:24,127 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:57:24,127 INFO  L85        PathProgramCache]: Analyzing trace with hash -1379831134, now seen corresponding path program 1 times
[2023-11-06 21:57:24,138 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:57:24,139 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762004753]
[2023-11-06 21:57:24,140 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:24,140 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:57:24,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:57:27,160 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:57:27,161 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:57:27,162 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762004753]
[2023-11-06 21:57:27,163 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762004753] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:57:27,163 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:57:27,163 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:57:27,165 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545864423]
[2023-11-06 21:57:27,167 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:57:27,176 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:57:27,176 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:57:27,227 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:57:27,228 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:27,243 INFO  L87              Difference]: Start difference. First operand  has 4600 states, 4598 states have (on average 1.6768160069595477) internal successors, (7710), 4599 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:27,689 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:57:27,689 INFO  L93              Difference]: Finished difference Result 9064 states and 15198 transitions.
[2023-11-06 21:57:27,690 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:57:27,692 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 375
[2023-11-06 21:57:27,698 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:57:27,753 INFO  L225             Difference]: With dead ends: 9064
[2023-11-06 21:57:27,753 INFO  L226             Difference]: Without dead ends: 4598
[2023-11-06 21:57:27,771 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:27,778 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 1 mSDsluCounter, 15398 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23100 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 21:57:27,779 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23100 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 21:57:27,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4598 states.
[2023-11-06 21:57:27,976 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4598 to 4598.
[2023-11-06 21:57:27,991 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4598 states, 4597 states have (on average 1.6763106373721992) internal successors, (7706), 4597 states have internal predecessors, (7706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:28,016 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4598 states to 4598 states and 7706 transitions.
[2023-11-06 21:57:28,017 INFO  L78                 Accepts]: Start accepts. Automaton has 4598 states and 7706 transitions. Word has length 375
[2023-11-06 21:57:28,022 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:57:28,022 INFO  L495      AbstractCegarLoop]: Abstraction has 4598 states and 7706 transitions.
[2023-11-06 21:57:28,023 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:28,023 INFO  L276                IsEmpty]: Start isEmpty. Operand 4598 states and 7706 transitions.
[2023-11-06 21:57:28,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 377
[2023-11-06 21:57:28,032 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:57:28,033 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 21:57:28,033 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 21:57:28,033 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:57:28,034 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:57:28,035 INFO  L85        PathProgramCache]: Analyzing trace with hash 176634974, now seen corresponding path program 1 times
[2023-11-06 21:57:28,035 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:57:28,035 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212236767]
[2023-11-06 21:57:28,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:28,036 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:57:28,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:57:29,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:57:29,375 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:57:29,376 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212236767]
[2023-11-06 21:57:29,376 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212236767] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:57:29,377 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:57:29,377 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:57:29,378 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063778958]
[2023-11-06 21:57:29,378 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:57:29,382 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:57:29,382 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:57:29,384 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:57:29,384 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:29,385 INFO  L87              Difference]: Start difference. First operand 4598 states and 7706 transitions. Second operand  has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:29,845 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:57:29,846 INFO  L93              Difference]: Finished difference Result 9065 states and 15194 transitions.
[2023-11-06 21:57:29,846 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:57:29,848 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 376
[2023-11-06 21:57:29,849 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:57:29,878 INFO  L225             Difference]: With dead ends: 9065
[2023-11-06 21:57:29,879 INFO  L226             Difference]: Without dead ends: 4601
[2023-11-06 21:57:29,892 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:29,895 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 1 mSDsluCounter, 15395 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23097 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:57:29,896 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23097 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:57:29,910 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4601 states.
[2023-11-06 21:57:29,993 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4600.
[2023-11-06 21:57:30,007 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4600 states, 4599 states have (on average 1.6760165253315937) internal successors, (7708), 4599 states have internal predecessors, (7708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:30,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 7708 transitions.
[2023-11-06 21:57:30,033 INFO  L78                 Accepts]: Start accepts. Automaton has 4600 states and 7708 transitions. Word has length 376
[2023-11-06 21:57:30,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:57:30,035 INFO  L495      AbstractCegarLoop]: Abstraction has 4600 states and 7708 transitions.
[2023-11-06 21:57:30,035 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:30,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 4600 states and 7708 transitions.
[2023-11-06 21:57:30,044 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 378
[2023-11-06 21:57:30,045 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:57:30,045 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 21:57:30,045 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 21:57:30,046 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:57:30,047 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:57:30,047 INFO  L85        PathProgramCache]: Analyzing trace with hash 970286652, now seen corresponding path program 1 times
[2023-11-06 21:57:30,048 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:57:30,048 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097335090]
[2023-11-06 21:57:30,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:30,049 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:57:30,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:57:31,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:57:31,238 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:57:31,239 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097335090]
[2023-11-06 21:57:31,239 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097335090] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:57:31,239 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:57:31,240 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:57:31,240 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516122513]
[2023-11-06 21:57:31,240 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:57:31,242 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:57:31,242 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:57:31,244 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:57:31,244 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:31,245 INFO  L87              Difference]: Start difference. First operand 4600 states and 7708 transitions. Second operand  has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:31,764 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:57:31,764 INFO  L93              Difference]: Finished difference Result 13526 states and 22671 transitions.
[2023-11-06 21:57:31,765 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:57:31,765 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377
[2023-11-06 21:57:31,767 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:57:31,826 INFO  L225             Difference]: With dead ends: 13526
[2023-11-06 21:57:31,826 INFO  L226             Difference]: Without dead ends: 9060
[2023-11-06 21:57:31,841 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:57:31,843 INFO  L413           NwaCegarLoop]: 8397 mSDtfsCounter, 7473 mSDsluCounter, 16088 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7473 SdHoareTripleChecker+Valid, 24485 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:57:31,844 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7473 Valid, 24485 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:57:31,863 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9060 states.
[2023-11-06 21:57:32,010 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9060 to 4602.
[2023-11-06 21:57:32,024 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4602 states, 4601 states have (on average 1.6757226689850033) internal successors, (7710), 4601 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:32,050 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 7710 transitions.
[2023-11-06 21:57:32,051 INFO  L78                 Accepts]: Start accepts. Automaton has 4602 states and 7710 transitions. Word has length 377
[2023-11-06 21:57:32,052 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:57:32,052 INFO  L495      AbstractCegarLoop]: Abstraction has 4602 states and 7710 transitions.
[2023-11-06 21:57:32,053 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:32,054 INFO  L276                IsEmpty]: Start isEmpty. Operand 4602 states and 7710 transitions.
[2023-11-06 21:57:32,063 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 379
[2023-11-06 21:57:32,064 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:57:32,064 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 21:57:32,065 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 21:57:32,065 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:57:32,065 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:57:32,066 INFO  L85        PathProgramCache]: Analyzing trace with hash 1614024132, now seen corresponding path program 1 times
[2023-11-06 21:57:32,066 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:57:32,067 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647199999]
[2023-11-06 21:57:32,067 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:32,067 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:57:32,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:57:33,482 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:57:33,483 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:57:33,483 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647199999]
[2023-11-06 21:57:33,483 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647199999] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:57:33,484 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:57:33,484 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-06 21:57:33,484 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198878936]
[2023-11-06 21:57:33,485 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:57:33,486 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 21:57:33,486 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:57:33,487 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 21:57:33,488 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-06 21:57:33,489 INFO  L87              Difference]: Start difference. First operand 4602 states and 7710 transitions. Second operand  has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:34,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:57:34,067 INFO  L93              Difference]: Finished difference Result 13949 states and 23372 transitions.
[2023-11-06 21:57:34,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 21:57:34,069 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378
[2023-11-06 21:57:34,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:57:34,132 INFO  L225             Difference]: With dead ends: 13949
[2023-11-06 21:57:34,132 INFO  L226             Difference]: Without dead ends: 9481
[2023-11-06 21:57:34,141 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-11-06 21:57:34,152 INFO  L413           NwaCegarLoop]: 8396 mSDtfsCounter, 30452 mSDsluCounter, 22868 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30452 SdHoareTripleChecker+Valid, 31264 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:57:34,154 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30452 Valid, 31264 Invalid, 19 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:57:34,173 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9481 states.
[2023-11-06 21:57:34,316 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9481 to 5019.
[2023-11-06 21:57:34,327 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5019 states, 5018 states have (on average 1.6749701076125947) internal successors, (8405), 5018 states have internal predecessors, (8405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:34,346 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5019 states to 5019 states and 8405 transitions.
[2023-11-06 21:57:34,347 INFO  L78                 Accepts]: Start accepts. Automaton has 5019 states and 8405 transitions. Word has length 378
[2023-11-06 21:57:34,348 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:57:34,348 INFO  L495      AbstractCegarLoop]: Abstraction has 5019 states and 8405 transitions.
[2023-11-06 21:57:34,349 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:34,349 INFO  L276                IsEmpty]: Start isEmpty. Operand 5019 states and 8405 transitions.
[2023-11-06 21:57:34,476 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:57:34,476 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:57:34,478 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:57:34,479 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-06 21:57:34,479 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:57:34,479 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:57:34,481 INFO  L85        PathProgramCache]: Analyzing trace with hash -558020465, now seen corresponding path program 1 times
[2023-11-06 21:57:34,481 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:57:34,481 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857347211]
[2023-11-06 21:57:34,482 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:34,482 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:57:35,031 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:57:35,031 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382628819]
[2023-11-06 21:57:35,032 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:35,033 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:57:35,033 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:57:35,038 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:57:35,077 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 21:57:39,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:57:39,688 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12602 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:57:39,846 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:57:40,197 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:57:40,197 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:57:40,198 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:57:40,198 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857347211]
[2023-11-06 21:57:40,199 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:57:40,199 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382628819]
[2023-11-06 21:57:40,199 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382628819] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:57:40,199 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:57:40,201 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:57:40,201 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877596057]
[2023-11-06 21:57:40,202 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:57:40,208 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:57:40,209 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:57:40,215 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:57:40,215 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:40,218 INFO  L87              Difference]: Start difference. First operand 5019 states and 8405 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:40,529 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:57:40,529 INFO  L93              Difference]: Finished difference Result 9497 states and 15909 transitions.
[2023-11-06 21:57:40,530 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:57:40,532 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:57:40,534 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:57:40,548 INFO  L225             Difference]: With dead ends: 9497
[2023-11-06 21:57:40,548 INFO  L226             Difference]: Without dead ends: 5029
[2023-11-06 21:57:40,556 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:40,557 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:57:40,558 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:57:40,571 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5029 states.
[2023-11-06 21:57:40,693 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 5021.
[2023-11-06 21:57:40,703 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5021 states, 5020 states have (on average 1.6747011952191235) internal successors, (8407), 5020 states have internal predecessors, (8407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:40,720 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 8407 transitions.
[2023-11-06 21:57:40,720 INFO  L78                 Accepts]: Start accepts. Automaton has 5021 states and 8407 transitions. Word has length 3109
[2023-11-06 21:57:40,722 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:57:40,723 INFO  L495      AbstractCegarLoop]: Abstraction has 5021 states and 8407 transitions.
[2023-11-06 21:57:40,725 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:40,725 INFO  L276                IsEmpty]: Start isEmpty. Operand 5021 states and 8407 transitions.
[2023-11-06 21:57:40,859 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:57:40,860 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:57:40,862 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:57:40,902 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-06 21:57:41,064 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:57:41,065 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:57:41,065 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:57:41,067 INFO  L85        PathProgramCache]: Analyzing trace with hash 1414976605, now seen corresponding path program 1 times
[2023-11-06 21:57:41,067 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:57:41,068 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049539602]
[2023-11-06 21:57:41,069 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:41,069 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:57:41,565 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:57:41,565 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834844095]
[2023-11-06 21:57:41,566 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:41,566 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:57:41,567 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:57:41,568 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:57:41,589 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-06 21:57:45,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:57:45,833 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12603 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:57:45,916 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:57:46,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:57:46,059 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:57:46,059 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:57:46,059 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049539602]
[2023-11-06 21:57:46,060 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:57:46,060 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834844095]
[2023-11-06 21:57:46,060 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [834844095] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:57:46,060 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:57:46,061 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:57:46,062 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413477885]
[2023-11-06 21:57:46,062 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:57:46,067 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:57:46,068 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:57:46,073 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:57:46,079 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:46,081 INFO  L87              Difference]: Start difference. First operand 5021 states and 8407 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:46,406 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:57:46,407 INFO  L93              Difference]: Finished difference Result 9500 states and 15911 transitions.
[2023-11-06 21:57:46,407 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:57:46,409 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:57:46,411 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:57:46,423 INFO  L225             Difference]: With dead ends: 9500
[2023-11-06 21:57:46,423 INFO  L226             Difference]: Without dead ends: 5030
[2023-11-06 21:57:46,430 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:46,431 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:57:46,432 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:57:46,444 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5030 states.
[2023-11-06 21:57:46,535 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5030 to 5022.
[2023-11-06 21:57:46,542 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5022 states, 5021 states have (on average 1.6745668193586936) internal successors, (8408), 5021 states have internal predecessors, (8408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:46,555 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5022 states to 5022 states and 8408 transitions.
[2023-11-06 21:57:46,555 INFO  L78                 Accepts]: Start accepts. Automaton has 5022 states and 8408 transitions. Word has length 3109
[2023-11-06 21:57:46,557 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:57:46,557 INFO  L495      AbstractCegarLoop]: Abstraction has 5022 states and 8408 transitions.
[2023-11-06 21:57:46,558 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:46,559 INFO  L276                IsEmpty]: Start isEmpty. Operand 5022 states and 8408 transitions.
[2023-11-06 21:57:46,644 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:57:46,644 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:57:46,647 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:57:46,692 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-06 21:57:46,861 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-06 21:57:46,862 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:57:46,862 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:57:46,864 INFO  L85        PathProgramCache]: Analyzing trace with hash 696856363, now seen corresponding path program 1 times
[2023-11-06 21:57:46,864 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:57:46,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113274642]
[2023-11-06 21:57:46,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:46,865 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:57:47,357 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:57:47,358 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202957944]
[2023-11-06 21:57:47,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:47,359 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:57:47,359 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:57:47,360 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:57:47,364 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-06 21:57:51,623 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:57:51,705 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12604 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:57:51,777 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:57:51,929 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:57:51,930 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:57:51,930 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:57:51,930 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113274642]
[2023-11-06 21:57:51,931 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:57:51,931 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202957944]
[2023-11-06 21:57:51,931 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [202957944] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:57:51,931 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:57:51,932 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:57:51,933 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378341126]
[2023-11-06 21:57:51,933 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:57:51,938 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:57:51,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:57:51,943 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:57:51,944 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:51,945 INFO  L87              Difference]: Start difference. First operand 5022 states and 8408 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:52,208 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:57:52,208 INFO  L93              Difference]: Finished difference Result 9502 states and 15913 transitions.
[2023-11-06 21:57:52,209 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:57:52,211 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:57:52,213 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:57:52,226 INFO  L225             Difference]: With dead ends: 9502
[2023-11-06 21:57:52,226 INFO  L226             Difference]: Without dead ends: 5031
[2023-11-06 21:57:52,233 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:52,234 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:57:52,235 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:57:52,244 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5031 states.
[2023-11-06 21:57:52,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 5023.
[2023-11-06 21:57:52,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5023 states, 5022 states have (on average 1.6744324970131421) internal successors, (8409), 5022 states have internal predecessors, (8409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:52,352 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 8409 transitions.
[2023-11-06 21:57:52,352 INFO  L78                 Accepts]: Start accepts. Automaton has 5023 states and 8409 transitions. Word has length 3109
[2023-11-06 21:57:52,354 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:57:52,354 INFO  L495      AbstractCegarLoop]: Abstraction has 5023 states and 8409 transitions.
[2023-11-06 21:57:52,356 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:52,356 INFO  L276                IsEmpty]: Start isEmpty. Operand 5023 states and 8409 transitions.
[2023-11-06 21:57:52,447 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:57:52,447 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:57:52,450 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:57:52,486 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-06 21:57:52,651 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:57:52,652 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:57:52,653 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:57:52,654 INFO  L85        PathProgramCache]: Analyzing trace with hash 1787407645, now seen corresponding path program 1 times
[2023-11-06 21:57:52,655 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:57:52,655 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688856609]
[2023-11-06 21:57:52,655 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:52,656 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:57:53,101 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:57:53,101 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130008750]
[2023-11-06 21:57:53,102 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:53,103 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:57:53,103 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:57:53,104 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:57:53,129 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-06 21:57:56,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:57:57,009 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12605 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:57:57,062 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:57:57,191 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:57:57,191 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:57:57,192 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:57:57,192 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688856609]
[2023-11-06 21:57:57,192 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:57:57,192 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130008750]
[2023-11-06 21:57:57,192 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130008750] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:57:57,193 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:57:57,193 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:57:57,194 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200113682]
[2023-11-06 21:57:57,195 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:57:57,199 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:57:57,200 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:57:57,204 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:57:57,205 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:57,206 INFO  L87              Difference]: Start difference. First operand 5023 states and 8409 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:57,421 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:57:57,422 INFO  L93              Difference]: Finished difference Result 9504 states and 15915 transitions.
[2023-11-06 21:57:57,423 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:57:57,425 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:57:57,428 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:57:57,438 INFO  L225             Difference]: With dead ends: 9504
[2023-11-06 21:57:57,439 INFO  L226             Difference]: Without dead ends: 5032
[2023-11-06 21:57:57,445 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:57:57,446 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:57:57,448 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:57:57,455 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5032 states.
[2023-11-06 21:57:57,523 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5032 to 5024.
[2023-11-06 21:57:57,530 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5024 states, 5023 states have (on average 1.6742982281505077) internal successors, (8410), 5023 states have internal predecessors, (8410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:57,541 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5024 states to 5024 states and 8410 transitions.
[2023-11-06 21:57:57,541 INFO  L78                 Accepts]: Start accepts. Automaton has 5024 states and 8410 transitions. Word has length 3109
[2023-11-06 21:57:57,543 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:57:57,543 INFO  L495      AbstractCegarLoop]: Abstraction has 5024 states and 8410 transitions.
[2023-11-06 21:57:57,544 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:57:57,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 5024 states and 8410 transitions.
[2023-11-06 21:57:57,689 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:57:57,689 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:57:57,694 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:57:57,746 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-06 21:57:57,897 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:57:57,898 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:57:57,899 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:57:57,900 INFO  L85        PathProgramCache]: Analyzing trace with hash 947774059, now seen corresponding path program 1 times
[2023-11-06 21:57:57,900 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:57:57,901 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089036892]
[2023-11-06 21:57:57,901 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:57,901 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:57:58,293 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:57:58,294 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257135142]
[2023-11-06 21:57:58,295 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:57:58,295 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:57:58,295 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:57:58,297 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:57:58,301 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-06 21:58:02,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:02,205 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12606 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:02,266 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:02,392 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:02,393 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:02,393 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:02,393 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089036892]
[2023-11-06 21:58:02,393 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:02,394 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257135142]
[2023-11-06 21:58:02,394 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [257135142] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:02,394 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:02,395 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:02,395 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959380326]
[2023-11-06 21:58:02,395 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:02,400 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:02,400 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:02,404 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:02,405 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:02,407 INFO  L87              Difference]: Start difference. First operand 5024 states and 8410 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:02,599 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:02,599 INFO  L93              Difference]: Finished difference Result 9506 states and 15917 transitions.
[2023-11-06 21:58:02,600 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:02,601 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:02,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:02,614 INFO  L225             Difference]: With dead ends: 9506
[2023-11-06 21:58:02,614 INFO  L226             Difference]: Without dead ends: 5033
[2023-11-06 21:58:02,620 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:02,623 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:02,623 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:02,630 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5033 states.
[2023-11-06 21:58:02,701 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5033 to 5025.
[2023-11-06 21:58:02,709 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5025 states, 5024 states have (on average 1.6741640127388535) internal successors, (8411), 5024 states have internal predecessors, (8411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:02,722 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 8411 transitions.
[2023-11-06 21:58:02,722 INFO  L78                 Accepts]: Start accepts. Automaton has 5025 states and 8411 transitions. Word has length 3109
[2023-11-06 21:58:02,725 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:02,725 INFO  L495      AbstractCegarLoop]: Abstraction has 5025 states and 8411 transitions.
[2023-11-06 21:58:02,726 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:02,727 INFO  L276                IsEmpty]: Start isEmpty. Operand 5025 states and 8411 transitions.
[2023-11-06 21:58:02,814 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:02,815 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:02,817 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:02,865 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:03,041 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:03,042 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:03,042 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:03,043 INFO  L85        PathProgramCache]: Analyzing trace with hash 1433722845, now seen corresponding path program 1 times
[2023-11-06 21:58:03,044 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:03,044 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233751099]
[2023-11-06 21:58:03,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:03,045 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:03,356 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:03,356 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257569942]
[2023-11-06 21:58:03,357 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:03,358 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:03,358 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:03,359 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:03,363 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-06 21:58:07,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:07,228 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12607 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:07,272 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:07,397 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:07,397 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:07,397 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:07,398 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233751099]
[2023-11-06 21:58:07,398 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:07,398 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257569942]
[2023-11-06 21:58:07,398 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [257569942] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:07,398 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:07,399 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:07,400 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134329087]
[2023-11-06 21:58:07,400 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:07,404 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:07,405 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:07,409 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:07,409 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:07,411 INFO  L87              Difference]: Start difference. First operand 5025 states and 8411 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:07,597 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:07,597 INFO  L93              Difference]: Finished difference Result 9508 states and 15919 transitions.
[2023-11-06 21:58:07,598 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:07,599 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:07,602 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:07,613 INFO  L225             Difference]: With dead ends: 9508
[2023-11-06 21:58:07,613 INFO  L226             Difference]: Without dead ends: 5034
[2023-11-06 21:58:07,620 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:07,621 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:07,622 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:07,631 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5034 states.
[2023-11-06 21:58:07,700 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 5026.
[2023-11-06 21:58:07,707 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5026 states, 5025 states have (on average 1.6740298507462688) internal successors, (8412), 5025 states have internal predecessors, (8412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:07,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 8412 transitions.
[2023-11-06 21:58:07,718 INFO  L78                 Accepts]: Start accepts. Automaton has 5026 states and 8412 transitions. Word has length 3109
[2023-11-06 21:58:07,720 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:07,721 INFO  L495      AbstractCegarLoop]: Abstraction has 5026 states and 8412 transitions.
[2023-11-06 21:58:07,722 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:07,722 INFO  L276                IsEmpty]: Start isEmpty. Operand 5026 states and 8412 transitions.
[2023-11-06 21:58:07,800 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:07,800 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:07,803 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:07,847 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:08,018 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-06 21:58:08,018 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:08,018 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:08,020 INFO  L85        PathProgramCache]: Analyzing trace with hash -653635669, now seen corresponding path program 1 times
[2023-11-06 21:58:08,020 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:08,020 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833887354]
[2023-11-06 21:58:08,021 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:08,021 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:08,307 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:08,308 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480373241]
[2023-11-06 21:58:08,309 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:08,309 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:08,309 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:08,310 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:08,329 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-06 21:58:11,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:12,038 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12608 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:12,085 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:12,190 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:12,190 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:12,191 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:12,191 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833887354]
[2023-11-06 21:58:12,191 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:12,191 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480373241]
[2023-11-06 21:58:12,191 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480373241] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:12,191 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:12,192 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:12,193 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580051515]
[2023-11-06 21:58:12,193 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:12,197 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:12,197 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:12,201 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:12,202 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:12,203 INFO  L87              Difference]: Start difference. First operand 5026 states and 8412 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:12,386 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:12,387 INFO  L93              Difference]: Finished difference Result 9510 states and 15921 transitions.
[2023-11-06 21:58:12,390 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:12,391 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:12,398 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:12,415 INFO  L225             Difference]: With dead ends: 9510
[2023-11-06 21:58:12,415 INFO  L226             Difference]: Without dead ends: 5035
[2023-11-06 21:58:12,422 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:12,423 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:12,423 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:12,431 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5035 states.
[2023-11-06 21:58:12,505 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5035 to 5027.
[2023-11-06 21:58:12,514 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5027 states, 5026 states have (on average 1.6738957421408676) internal successors, (8413), 5026 states have internal predecessors, (8413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:12,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 8413 transitions.
[2023-11-06 21:58:12,525 INFO  L78                 Accepts]: Start accepts. Automaton has 5027 states and 8413 transitions. Word has length 3109
[2023-11-06 21:58:12,528 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:12,528 INFO  L495      AbstractCegarLoop]: Abstraction has 5027 states and 8413 transitions.
[2023-11-06 21:58:12,529 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:12,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 5027 states and 8413 transitions.
[2023-11-06 21:58:12,615 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:12,615 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:12,617 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:12,669 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:12,833 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-06 21:58:12,834 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:12,834 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:12,836 INFO  L85        PathProgramCache]: Analyzing trace with hash -1138890119, now seen corresponding path program 1 times
[2023-11-06 21:58:12,836 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:12,836 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595044254]
[2023-11-06 21:58:12,837 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:12,837 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:13,130 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:13,130 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790119124]
[2023-11-06 21:58:13,131 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:13,131 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:13,132 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:13,134 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:13,153 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-06 21:58:16,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:17,045 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12609 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:17,093 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:17,190 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:17,190 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:17,190 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:17,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595044254]
[2023-11-06 21:58:17,191 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:17,191 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790119124]
[2023-11-06 21:58:17,191 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [790119124] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:17,191 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:17,192 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:17,193 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053283443]
[2023-11-06 21:58:17,193 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:17,198 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:17,198 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:17,202 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:17,202 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:17,204 INFO  L87              Difference]: Start difference. First operand 5027 states and 8413 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:17,372 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:17,372 INFO  L93              Difference]: Finished difference Result 9512 states and 15923 transitions.
[2023-11-06 21:58:17,373 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:17,374 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:17,377 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:17,388 INFO  L225             Difference]: With dead ends: 9512
[2023-11-06 21:58:17,388 INFO  L226             Difference]: Without dead ends: 5036
[2023-11-06 21:58:17,394 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:17,395 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:17,395 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:17,403 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5036 states.
[2023-11-06 21:58:17,468 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 5028.
[2023-11-06 21:58:17,475 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5028 states, 5027 states have (on average 1.6737616868907896) internal successors, (8414), 5027 states have internal predecessors, (8414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:17,486 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 8414 transitions.
[2023-11-06 21:58:17,486 INFO  L78                 Accepts]: Start accepts. Automaton has 5028 states and 8414 transitions. Word has length 3109
[2023-11-06 21:58:17,489 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:17,489 INFO  L495      AbstractCegarLoop]: Abstraction has 5028 states and 8414 transitions.
[2023-11-06 21:58:17,491 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:17,491 INFO  L276                IsEmpty]: Start isEmpty. Operand 5028 states and 8414 transitions.
[2023-11-06 21:58:17,572 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:17,572 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:17,575 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:17,612 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:17,789 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-06 21:58:17,790 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:17,790 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:17,791 INFO  L85        PathProgramCache]: Analyzing trace with hash -2098344597, now seen corresponding path program 1 times
[2023-11-06 21:58:17,791 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:17,791 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121689791]
[2023-11-06 21:58:17,792 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:17,792 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:18,121 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:18,121 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76091152]
[2023-11-06 21:58:18,122 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:18,122 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:18,123 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:18,126 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:18,155 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-06 21:58:21,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:21,948 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12610 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:21,999 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:22,103 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:22,103 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:22,103 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:22,103 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121689791]
[2023-11-06 21:58:22,104 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:22,104 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76091152]
[2023-11-06 21:58:22,104 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [76091152] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:22,104 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:22,105 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:22,106 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441636750]
[2023-11-06 21:58:22,106 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:22,111 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:22,112 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:22,115 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:22,115 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:22,117 INFO  L87              Difference]: Start difference. First operand 5028 states and 8414 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:22,277 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:22,277 INFO  L93              Difference]: Finished difference Result 9514 states and 15925 transitions.
[2023-11-06 21:58:22,278 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:22,279 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:22,283 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:22,293 INFO  L225             Difference]: With dead ends: 9514
[2023-11-06 21:58:22,293 INFO  L226             Difference]: Without dead ends: 5037
[2023-11-06 21:58:22,299 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:22,300 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:22,300 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:22,308 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5037 states.
[2023-11-06 21:58:22,374 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5037 to 5029.
[2023-11-06 21:58:22,381 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5029 states, 5028 states have (on average 1.6736276849642004) internal successors, (8415), 5028 states have internal predecessors, (8415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:22,393 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5029 states to 5029 states and 8415 transitions.
[2023-11-06 21:58:22,393 INFO  L78                 Accepts]: Start accepts. Automaton has 5029 states and 8415 transitions. Word has length 3109
[2023-11-06 21:58:22,396 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:22,397 INFO  L495      AbstractCegarLoop]: Abstraction has 5029 states and 8415 transitions.
[2023-11-06 21:58:22,398 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:22,399 INFO  L276                IsEmpty]: Start isEmpty. Operand 5029 states and 8415 transitions.
[2023-11-06 21:58:22,480 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:22,480 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:22,482 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:22,531 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:22,697 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:22,698 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:22,698 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:22,700 INFO  L85        PathProgramCache]: Analyzing trace with hash -2024914851, now seen corresponding path program 1 times
[2023-11-06 21:58:22,700 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:22,700 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166671471]
[2023-11-06 21:58:22,701 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:22,701 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:23,082 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:23,083 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738033026]
[2023-11-06 21:58:23,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:23,084 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:23,085 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:23,086 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:23,095 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-06 21:58:26,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:26,967 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12611 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:27,017 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:27,094 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:27,095 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:27,095 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:27,095 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166671471]
[2023-11-06 21:58:27,095 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:27,095 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738033026]
[2023-11-06 21:58:27,095 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738033026] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:27,095 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:27,096 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:27,096 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903092142]
[2023-11-06 21:58:27,096 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:27,101 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:27,101 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:27,105 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:27,106 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:27,107 INFO  L87              Difference]: Start difference. First operand 5029 states and 8415 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:27,238 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:27,239 INFO  L93              Difference]: Finished difference Result 9516 states and 15927 transitions.
[2023-11-06 21:58:27,239 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:27,240 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:27,243 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:27,253 INFO  L225             Difference]: With dead ends: 9516
[2023-11-06 21:58:27,254 INFO  L226             Difference]: Without dead ends: 5038
[2023-11-06 21:58:27,260 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:27,261 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:27,261 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:27,269 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5038 states.
[2023-11-06 21:58:27,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 5030.
[2023-11-06 21:58:27,342 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5030 states, 5029 states have (on average 1.67349373632929) internal successors, (8416), 5029 states have internal predecessors, (8416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:27,352 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5030 states to 5030 states and 8416 transitions.
[2023-11-06 21:58:27,353 INFO  L78                 Accepts]: Start accepts. Automaton has 5030 states and 8416 transitions. Word has length 3109
[2023-11-06 21:58:27,355 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:27,355 INFO  L495      AbstractCegarLoop]: Abstraction has 5030 states and 8416 transitions.
[2023-11-06 21:58:27,356 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:27,356 INFO  L276                IsEmpty]: Start isEmpty. Operand 5030 states and 8416 transitions.
[2023-11-06 21:58:27,420 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:27,421 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:27,422 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:27,458 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:27,623 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:27,624 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:27,624 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:27,625 INFO  L85        PathProgramCache]: Analyzing trace with hash -1568564565, now seen corresponding path program 1 times
[2023-11-06 21:58:27,626 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:27,626 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962237653]
[2023-11-06 21:58:27,626 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:27,626 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:27,894 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:27,894 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421379418]
[2023-11-06 21:58:27,895 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:27,895 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:27,896 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:27,897 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:27,905 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-06 21:58:31,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:31,861 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12612 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:31,923 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:32,027 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:32,028 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:32,028 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:32,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962237653]
[2023-11-06 21:58:32,028 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:32,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421379418]
[2023-11-06 21:58:32,029 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421379418] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:32,029 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:32,030 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:32,031 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213359829]
[2023-11-06 21:58:32,031 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:32,035 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:32,036 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:32,039 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:32,040 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:32,041 INFO  L87              Difference]: Start difference. First operand 5030 states and 8416 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:32,196 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:32,196 INFO  L93              Difference]: Finished difference Result 9518 states and 15929 transitions.
[2023-11-06 21:58:32,197 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:32,198 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:32,200 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:32,210 INFO  L225             Difference]: With dead ends: 9518
[2023-11-06 21:58:32,211 INFO  L226             Difference]: Without dead ends: 5039
[2023-11-06 21:58:32,218 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:32,218 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:32,219 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:32,228 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5039 states.
[2023-11-06 21:58:32,296 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5039 to 5031.
[2023-11-06 21:58:32,301 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5031 states, 5030 states have (on average 1.6733598409542743) internal successors, (8417), 5030 states have internal predecessors, (8417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:32,312 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5031 states to 5031 states and 8417 transitions.
[2023-11-06 21:58:32,312 INFO  L78                 Accepts]: Start accepts. Automaton has 5031 states and 8417 transitions. Word has length 3109
[2023-11-06 21:58:32,314 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:32,315 INFO  L495      AbstractCegarLoop]: Abstraction has 5031 states and 8417 transitions.
[2023-11-06 21:58:32,316 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:32,316 INFO  L276                IsEmpty]: Start isEmpty. Operand 5031 states and 8417 transitions.
[2023-11-06 21:58:32,400 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:32,401 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:32,403 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:32,448 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:32,617 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:32,618 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:32,618 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:32,620 INFO  L85        PathProgramCache]: Analyzing trace with hash 849312249, now seen corresponding path program 1 times
[2023-11-06 21:58:32,620 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:32,620 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694265036]
[2023-11-06 21:58:32,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:32,621 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:33,024 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:33,025 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096536006]
[2023-11-06 21:58:33,026 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:33,026 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:33,026 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:33,028 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:33,049 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-06 21:58:36,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:36,757 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12613 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:36,798 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:36,874 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:36,874 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:36,875 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:36,875 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694265036]
[2023-11-06 21:58:36,875 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:36,875 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096536006]
[2023-11-06 21:58:36,875 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096536006] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:36,875 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:36,876 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:36,877 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425525402]
[2023-11-06 21:58:36,877 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:36,881 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:36,881 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:36,885 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:36,885 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:36,887 INFO  L87              Difference]: Start difference. First operand 5031 states and 8417 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:37,019 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:37,019 INFO  L93              Difference]: Finished difference Result 9520 states and 15931 transitions.
[2023-11-06 21:58:37,019 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:37,020 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:37,022 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:37,030 INFO  L225             Difference]: With dead ends: 9520
[2023-11-06 21:58:37,030 INFO  L226             Difference]: Without dead ends: 5040
[2023-11-06 21:58:37,035 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:37,036 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:37,036 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:37,044 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5040 states.
[2023-11-06 21:58:37,107 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 5032.
[2023-11-06 21:58:37,112 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5032 states, 5031 states have (on average 1.673225998807394) internal successors, (8418), 5031 states have internal predecessors, (8418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:37,123 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5032 states to 5032 states and 8418 transitions.
[2023-11-06 21:58:37,123 INFO  L78                 Accepts]: Start accepts. Automaton has 5032 states and 8418 transitions. Word has length 3109
[2023-11-06 21:58:37,126 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:37,126 INFO  L495      AbstractCegarLoop]: Abstraction has 5032 states and 8418 transitions.
[2023-11-06 21:58:37,127 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:37,127 INFO  L276                IsEmpty]: Start isEmpty. Operand 5032 states and 8418 transitions.
[2023-11-06 21:58:37,205 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:37,206 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:37,208 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:37,261 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:37,421 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:37,422 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:37,422 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:37,424 INFO  L85        PathProgramCache]: Analyzing trace with hash -1009222201, now seen corresponding path program 1 times
[2023-11-06 21:58:37,424 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:37,424 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280681573]
[2023-11-06 21:58:37,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:37,425 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:37,789 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:37,789 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900436306]
[2023-11-06 21:58:37,790 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:37,790 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:37,791 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:37,792 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:37,829 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-06 21:58:41,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:41,530 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12614 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:41,571 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:41,642 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:41,642 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:41,643 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:41,643 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280681573]
[2023-11-06 21:58:41,643 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:41,643 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900436306]
[2023-11-06 21:58:41,643 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900436306] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:41,643 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:41,644 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:41,645 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663361483]
[2023-11-06 21:58:41,645 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:41,649 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:41,649 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:41,653 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:41,653 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:41,654 INFO  L87              Difference]: Start difference. First operand 5032 states and 8418 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:41,777 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:41,777 INFO  L93              Difference]: Finished difference Result 9522 states and 15933 transitions.
[2023-11-06 21:58:41,777 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:41,778 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:41,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:41,789 INFO  L225             Difference]: With dead ends: 9522
[2023-11-06 21:58:41,789 INFO  L226             Difference]: Without dead ends: 5041
[2023-11-06 21:58:41,794 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:41,795 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:41,795 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:41,803 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5041 states.
[2023-11-06 21:58:41,869 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5041 to 5033.
[2023-11-06 21:58:41,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5033 states, 5032 states have (on average 1.6730922098569156) internal successors, (8419), 5032 states have internal predecessors, (8419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:41,885 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 8419 transitions.
[2023-11-06 21:58:41,886 INFO  L78                 Accepts]: Start accepts. Automaton has 5033 states and 8419 transitions. Word has length 3109
[2023-11-06 21:58:41,888 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:41,888 INFO  L495      AbstractCegarLoop]: Abstraction has 5033 states and 8419 transitions.
[2023-11-06 21:58:41,889 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:41,890 INFO  L276                IsEmpty]: Start isEmpty. Operand 5033 states and 8419 transitions.
[2023-11-06 21:58:41,968 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:41,969 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:41,971 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:42,021 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:42,185 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:42,186 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:42,186 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:42,188 INFO  L85        PathProgramCache]: Analyzing trace with hash -1242977899, now seen corresponding path program 1 times
[2023-11-06 21:58:42,188 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:42,188 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627649576]
[2023-11-06 21:58:42,189 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:42,189 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:42,496 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:42,496 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009577628]
[2023-11-06 21:58:42,497 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:42,498 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:42,498 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:42,506 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:42,525 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-06 21:58:46,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:46,489 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12615 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:46,527 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:46,604 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:46,604 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:46,605 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:46,605 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627649576]
[2023-11-06 21:58:46,605 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:46,605 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009577628]
[2023-11-06 21:58:46,605 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009577628] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:46,605 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:46,606 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:46,607 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147418838]
[2023-11-06 21:58:46,607 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:46,610 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:46,610 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:46,614 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:46,615 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:46,616 INFO  L87              Difference]: Start difference. First operand 5033 states and 8419 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:46,734 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:46,734 INFO  L93              Difference]: Finished difference Result 9524 states and 15935 transitions.
[2023-11-06 21:58:46,735 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:46,736 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:46,738 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:46,746 INFO  L225             Difference]: With dead ends: 9524
[2023-11-06 21:58:46,747 INFO  L226             Difference]: Without dead ends: 5042
[2023-11-06 21:58:46,751 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:46,752 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:46,753 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:46,761 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5042 states.
[2023-11-06 21:58:46,821 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5042 to 5034.
[2023-11-06 21:58:46,827 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5034 states, 5033 states have (on average 1.6729584740711305) internal successors, (8420), 5033 states have internal predecessors, (8420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:46,837 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 8420 transitions.
[2023-11-06 21:58:46,837 INFO  L78                 Accepts]: Start accepts. Automaton has 5034 states and 8420 transitions. Word has length 3109
[2023-11-06 21:58:46,839 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:46,839 INFO  L495      AbstractCegarLoop]: Abstraction has 5034 states and 8420 transitions.
[2023-11-06 21:58:46,840 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:46,841 INFO  L276                IsEmpty]: Start isEmpty. Operand 5034 states and 8420 transitions.
[2023-11-06 21:58:46,918 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:46,918 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:46,921 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:46,973 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:47,149 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:47,150 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:47,150 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:47,152 INFO  L85        PathProgramCache]: Analyzing trace with hash 241965959, now seen corresponding path program 1 times
[2023-11-06 21:58:47,152 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:47,152 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91338536]
[2023-11-06 21:58:47,153 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:47,153 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:47,454 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:47,454 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522498237]
[2023-11-06 21:58:47,455 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:47,455 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:47,455 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:47,456 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:47,481 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-06 21:58:51,182 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:51,268 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12616 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:51,314 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:51,390 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:51,390 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:51,390 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:51,391 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91338536]
[2023-11-06 21:58:51,391 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:51,391 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522498237]
[2023-11-06 21:58:51,391 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [522498237] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:51,391 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:51,392 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:51,392 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109509119]
[2023-11-06 21:58:51,392 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:51,395 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:51,395 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:51,397 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:51,397 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:51,398 INFO  L87              Difference]: Start difference. First operand 5034 states and 8420 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:51,519 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:51,519 INFO  L93              Difference]: Finished difference Result 9526 states and 15937 transitions.
[2023-11-06 21:58:51,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:51,521 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:51,523 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:51,527 INFO  L225             Difference]: With dead ends: 9526
[2023-11-06 21:58:51,527 INFO  L226             Difference]: Without dead ends: 5043
[2023-11-06 21:58:51,532 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:51,532 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:51,533 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:51,540 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5043 states.
[2023-11-06 21:58:51,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5043 to 5035.
[2023-11-06 21:58:51,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5035 states, 5034 states have (on average 1.6728247914183552) internal successors, (8421), 5034 states have internal predecessors, (8421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:51,623 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 8421 transitions.
[2023-11-06 21:58:51,623 INFO  L78                 Accepts]: Start accepts. Automaton has 5035 states and 8421 transitions. Word has length 3109
[2023-11-06 21:58:51,625 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:51,625 INFO  L495      AbstractCegarLoop]: Abstraction has 5035 states and 8421 transitions.
[2023-11-06 21:58:51,626 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:51,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 5035 states and 8421 transitions.
[2023-11-06 21:58:51,682 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:51,682 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:51,685 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:51,732 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:51,913 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:51,914 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:51,914 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:51,915 INFO  L85        PathProgramCache]: Analyzing trace with hash -1195827499, now seen corresponding path program 1 times
[2023-11-06 21:58:51,915 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:51,915 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791561143]
[2023-11-06 21:58:51,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:51,916 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:52,188 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:52,189 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061417491]
[2023-11-06 21:58:52,190 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:52,190 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:52,190 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:52,192 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:52,202 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-06 21:58:55,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:58:56,007 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12617 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 21:58:56,048 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:58:56,126 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:58:56,126 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 21:58:56,126 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:58:56,126 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791561143]
[2023-11-06 21:58:56,126 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:58:56,126 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061417491]
[2023-11-06 21:58:56,126 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061417491] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:58:56,126 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:58:56,127 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:58:56,128 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869233614]
[2023-11-06 21:58:56,128 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:58:56,133 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:58:56,133 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:58:56,136 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:58:56,136 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:56,137 INFO  L87              Difference]: Start difference. First operand 5035 states and 8421 transitions. Second operand  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:56,254 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:58:56,254 INFO  L93              Difference]: Finished difference Result 9528 states and 15939 transitions.
[2023-11-06 21:58:56,255 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:58:56,256 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:58:56,257 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:58:56,262 INFO  L225             Difference]: With dead ends: 9528
[2023-11-06 21:58:56,262 INFO  L226             Difference]: Without dead ends: 5044
[2023-11-06 21:58:56,265 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:58:56,266 INFO  L413           NwaCegarLoop]: 7702 mSDtfsCounter, 12 mSDsluCounter, 15392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23094 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:58:56,266 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23094 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:58:56,274 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5044 states.
[2023-11-06 21:58:56,342 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5044 to 5036.
[2023-11-06 21:58:56,348 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5036 states, 5035 states have (on average 1.6726911618669316) internal successors, (8422), 5035 states have internal predecessors, (8422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:56,359 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5036 states to 5036 states and 8422 transitions.
[2023-11-06 21:58:56,359 INFO  L78                 Accepts]: Start accepts. Automaton has 5036 states and 8422 transitions. Word has length 3109
[2023-11-06 21:58:56,361 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:58:56,361 INFO  L495      AbstractCegarLoop]: Abstraction has 5036 states and 8422 transitions.
[2023-11-06 21:58:56,362 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:58:56,363 INFO  L276                IsEmpty]: Start isEmpty. Operand 5036 states and 8422 transitions.
[2023-11-06 21:58:56,442 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3110
[2023-11-06 21:58:56,442 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:58:56,444 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:58:56,492 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-11-06 21:58:56,665 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:56,666 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:58:56,666 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:58:56,667 INFO  L85        PathProgramCache]: Analyzing trace with hash -1167710429, now seen corresponding path program 1 times
[2023-11-06 21:58:56,668 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:58:56,668 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087545285]
[2023-11-06 21:58:56,668 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:56,668 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:58:56,977 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:58:56,977 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389243848]
[2023-11-06 21:58:56,978 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:58:56,979 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:58:56,979 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:58:56,980 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:58:57,001 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-06 21:59:00,653 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:59:00,750 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12618 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 21:59:00,817 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:59:01,640 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 8 proven. 257 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2023-11-06 21:59:01,641 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 21:59:01,779 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2023-11-06 21:59:01,780 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:59:01,780 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087545285]
[2023-11-06 21:59:01,780 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:59:01,780 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389243848]
[2023-11-06 21:59:01,780 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389243848] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 21:59:01,780 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 21:59:01,782 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 21:59:01,782 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887145874]
[2023-11-06 21:59:01,782 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:59:01,786 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:59:01,786 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:59:01,790 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:59:01,790 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 21:59:01,792 INFO  L87              Difference]: Start difference. First operand 5036 states and 8422 transitions. Second operand  has 5 states, 5 states have (on average 566.8) internal successors, (2834), 5 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:07,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:59:07,821 INFO  L93              Difference]: Finished difference Result 18197 states and 30356 transitions.
[2023-11-06 21:59:07,822 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 21:59:07,823 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 566.8) internal successors, (2834), 5 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3109
[2023-11-06 21:59:07,826 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:59:07,837 INFO  L225             Difference]: With dead ends: 18197
[2023-11-06 21:59:07,837 INFO  L226             Difference]: Without dead ends: 9514
[2023-11-06 21:59:07,844 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6217 GetRequests, 6208 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 21:59:07,845 INFO  L413           NwaCegarLoop]: 13597 mSDtfsCounter, 14092 mSDsluCounter, 19994 mSDsCounter, 0 mSdLazyCounter, 5920 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14092 SdHoareTripleChecker+Valid, 33591 SdHoareTripleChecker+Invalid, 6203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-11-06 21:59:07,846 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14092 Valid, 33591 Invalid, 6203 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 5920 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-11-06 21:59:07,857 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9514 states.
[2023-11-06 21:59:07,917 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9514 to 5038.
[2023-11-06 21:59:07,922 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5038 states, 5037 states have (on average 1.672424061941632) internal successors, (8424), 5037 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:07,931 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5038 states to 5038 states and 8424 transitions.
[2023-11-06 21:59:07,932 INFO  L78                 Accepts]: Start accepts. Automaton has 5038 states and 8424 transitions. Word has length 3109
[2023-11-06 21:59:07,934 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:59:07,934 INFO  L495      AbstractCegarLoop]: Abstraction has 5038 states and 8424 transitions.
[2023-11-06 21:59:07,935 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 566.8) internal successors, (2834), 5 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:07,935 INFO  L276                IsEmpty]: Start isEmpty. Operand 5038 states and 8424 transitions.
[2023-11-06 21:59:08,006 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3111
[2023-11-06 21:59:08,007 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:59:08,009 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:59:08,049 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2023-11-06 21:59:08,221 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:59:08,222 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:59:08,222 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:59:08,223 INFO  L85        PathProgramCache]: Analyzing trace with hash -914278567, now seen corresponding path program 1 times
[2023-11-06 21:59:08,223 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:59:08,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005472824]
[2023-11-06 21:59:08,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:59:08,225 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:59:08,594 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:59:08,594 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035405854]
[2023-11-06 21:59:08,595 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:59:08,595 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:59:08,596 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:59:08,597 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:59:08,631 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-06 21:59:12,639 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:59:12,733 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12622 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 21:59:12,782 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:59:13,306 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 10 proven. 257 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2023-11-06 21:59:13,306 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 21:59:13,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked.
[2023-11-06 21:59:13,444 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:59:13,444 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005472824]
[2023-11-06 21:59:13,444 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:59:13,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035405854]
[2023-11-06 21:59:13,445 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035405854] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 21:59:13,445 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 21:59:13,446 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 21:59:13,447 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424185126]
[2023-11-06 21:59:13,447 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:59:13,451 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:59:13,451 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:59:13,454 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:59:13,454 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 21:59:13,455 INFO  L87              Difference]: Start difference. First operand 5038 states and 8424 transitions. Second operand  has 5 states, 5 states have (on average 567.4) internal successors, (2837), 5 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:18,212 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:59:18,213 INFO  L93              Difference]: Finished difference Result 18205 states and 30364 transitions.
[2023-11-06 21:59:18,214 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 21:59:18,214 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 567.4) internal successors, (2837), 5 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3110
[2023-11-06 21:59:18,217 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:59:18,225 INFO  L225             Difference]: With dead ends: 18205
[2023-11-06 21:59:18,226 INFO  L226             Difference]: Without dead ends: 9515
[2023-11-06 21:59:18,232 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6219 GetRequests, 6210 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 21:59:18,233 INFO  L413           NwaCegarLoop]: 13589 mSDtfsCounter, 20707 mSDsluCounter, 13207 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20707 SdHoareTripleChecker+Valid, 26796 SdHoareTripleChecker+Invalid, 4591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time
[2023-11-06 21:59:18,234 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20707 Valid, 26796 Invalid, 4591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time]
[2023-11-06 21:59:18,245 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9515 states.
[2023-11-06 21:59:18,307 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9515 to 5040.
[2023-11-06 21:59:18,312 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5040 states, 5039 states have (on average 1.6721571740424688) internal successors, (8426), 5039 states have internal predecessors, (8426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:18,319 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 8426 transitions.
[2023-11-06 21:59:18,319 INFO  L78                 Accepts]: Start accepts. Automaton has 5040 states and 8426 transitions. Word has length 3110
[2023-11-06 21:59:18,320 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:59:18,321 INFO  L495      AbstractCegarLoop]: Abstraction has 5040 states and 8426 transitions.
[2023-11-06 21:59:18,321 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 567.4) internal successors, (2837), 5 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:18,321 INFO  L276                IsEmpty]: Start isEmpty. Operand 5040 states and 8426 transitions.
[2023-11-06 21:59:18,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3112
[2023-11-06 21:59:18,367 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:59:18,369 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:59:18,406 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2023-11-06 21:59:18,569 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:59:18,570 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:59:18,570 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:59:18,571 INFO  L85        PathProgramCache]: Analyzing trace with hash -897918005, now seen corresponding path program 1 times
[2023-11-06 21:59:18,571 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:59:18,572 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388620121]
[2023-11-06 21:59:18,572 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:59:18,572 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:59:18,817 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:59:18,817 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399286611]
[2023-11-06 21:59:18,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:59:18,818 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:59:18,818 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:59:18,819 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:59:18,827 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-06 21:59:22,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:59:22,645 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12625 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 21:59:22,699 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:59:23,289 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 12 proven. 257 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-11-06 21:59:23,289 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 21:59:23,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2023-11-06 21:59:23,423 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:59:23,423 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388620121]
[2023-11-06 21:59:23,423 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:59:23,423 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399286611]
[2023-11-06 21:59:23,423 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399286611] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 21:59:23,423 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 21:59:23,425 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 21:59:23,425 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167451939]
[2023-11-06 21:59:23,425 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:59:23,429 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:59:23,429 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:59:23,433 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:59:23,433 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 21:59:23,434 INFO  L87              Difference]: Start difference. First operand 5040 states and 8426 transitions. Second operand  has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:28,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:59:28,480 INFO  L93              Difference]: Finished difference Result 18213 states and 30372 transitions.
[2023-11-06 21:59:28,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 21:59:28,481 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3111
[2023-11-06 21:59:28,484 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:59:28,492 INFO  L225             Difference]: With dead ends: 18213
[2023-11-06 21:59:28,492 INFO  L226             Difference]: Without dead ends: 9516
[2023-11-06 21:59:28,499 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6221 GetRequests, 6212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 21:59:28,500 INFO  L413           NwaCegarLoop]: 13581 mSDtfsCounter, 20695 mSDsluCounter, 13203 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20695 SdHoareTripleChecker+Valid, 26784 SdHoareTripleChecker+Invalid, 4591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2023-11-06 21:59:28,500 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20695 Valid, 26784 Invalid, 4591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time]
[2023-11-06 21:59:28,511 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9516 states.
[2023-11-06 21:59:28,582 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9516 to 5042.
[2023-11-06 21:59:28,588 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5042 states, 5041 states have (on average 1.6718904979170799) internal successors, (8428), 5041 states have internal predecessors, (8428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:28,598 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 8428 transitions.
[2023-11-06 21:59:28,598 INFO  L78                 Accepts]: Start accepts. Automaton has 5042 states and 8428 transitions. Word has length 3111
[2023-11-06 21:59:28,601 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:59:28,601 INFO  L495      AbstractCegarLoop]: Abstraction has 5042 states and 8428 transitions.
[2023-11-06 21:59:28,602 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:28,602 INFO  L276                IsEmpty]: Start isEmpty. Operand 5042 states and 8428 transitions.
[2023-11-06 21:59:28,668 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3113
[2023-11-06 21:59:28,668 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:59:28,669 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:59:28,705 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2023-11-06 21:59:28,870 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:59:28,871 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:59:28,871 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:59:28,872 INFO  L85        PathProgramCache]: Analyzing trace with hash 388311731, now seen corresponding path program 1 times
[2023-11-06 21:59:28,872 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:59:28,872 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000113289]
[2023-11-06 21:59:28,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:59:28,873 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:59:29,124 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:59:29,124 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176785952]
[2023-11-06 21:59:29,125 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:59:29,126 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:59:29,126 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:59:29,127 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:59:29,148 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-06 21:59:32,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:59:32,889 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12628 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 21:59:32,936 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:59:33,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 14 proven. 257 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-11-06 21:59:33,507 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 21:59:33,638 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2023-11-06 21:59:33,638 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:59:33,638 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000113289]
[2023-11-06 21:59:33,638 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:59:33,638 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176785952]
[2023-11-06 21:59:33,638 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [176785952] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 21:59:33,638 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 21:59:33,640 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 21:59:33,640 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216730350]
[2023-11-06 21:59:33,640 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:59:33,644 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:59:33,644 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:59:33,648 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:59:33,648 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 21:59:33,649 INFO  L87              Difference]: Start difference. First operand 5042 states and 8428 transitions. Second operand  has 5 states, 5 states have (on average 568.6) internal successors, (2843), 5 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:39,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:59:39,291 INFO  L93              Difference]: Finished difference Result 18221 states and 30380 transitions.
[2023-11-06 21:59:39,292 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 21:59:39,293 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 568.6) internal successors, (2843), 5 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3112
[2023-11-06 21:59:39,295 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:59:39,305 INFO  L225             Difference]: With dead ends: 18221
[2023-11-06 21:59:39,305 INFO  L226             Difference]: Without dead ends: 9517
[2023-11-06 21:59:39,311 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6223 GetRequests, 6214 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 21:59:39,311 INFO  L413           NwaCegarLoop]: 13573 mSDtfsCounter, 20691 mSDsluCounter, 13197 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20691 SdHoareTripleChecker+Valid, 26770 SdHoareTripleChecker+Invalid, 4591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2023-11-06 21:59:39,312 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20691 Valid, 26770 Invalid, 4591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2023-11-06 21:59:39,321 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9517 states.
[2023-11-06 21:59:39,403 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9517 to 5044.
[2023-11-06 21:59:39,409 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5044 states, 5043 states have (on average 1.671624033313504) internal successors, (8430), 5043 states have internal predecessors, (8430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:39,420 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5044 states to 5044 states and 8430 transitions.
[2023-11-06 21:59:39,420 INFO  L78                 Accepts]: Start accepts. Automaton has 5044 states and 8430 transitions. Word has length 3112
[2023-11-06 21:59:39,423 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:59:39,423 INFO  L495      AbstractCegarLoop]: Abstraction has 5044 states and 8430 transitions.
[2023-11-06 21:59:39,424 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 568.6) internal successors, (2843), 5 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:39,424 INFO  L276                IsEmpty]: Start isEmpty. Operand 5044 states and 8430 transitions.
[2023-11-06 21:59:39,476 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3114
[2023-11-06 21:59:39,476 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:59:39,477 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:59:39,519 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2023-11-06 21:59:39,678 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2023-11-06 21:59:39,678 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:59:39,678 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:59:39,679 INFO  L85        PathProgramCache]: Analyzing trace with hash 350946673, now seen corresponding path program 1 times
[2023-11-06 21:59:39,679 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:59:39,679 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416146443]
[2023-11-06 21:59:39,680 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:59:39,680 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:59:40,001 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:59:40,001 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751748304]
[2023-11-06 21:59:40,003 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:59:40,003 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:59:40,003 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:59:40,006 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:59:40,033 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-06 21:59:43,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:59:43,834 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12631 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 21:59:43,874 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:59:44,568 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 16 proven. 257 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2023-11-06 21:59:44,569 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 21:59:44,712 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked.
[2023-11-06 21:59:44,712 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:59:44,712 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416146443]
[2023-11-06 21:59:44,712 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:59:44,712 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751748304]
[2023-11-06 21:59:44,712 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [751748304] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 21:59:44,713 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 21:59:44,714 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 21:59:44,715 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196324650]
[2023-11-06 21:59:44,715 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:59:44,716 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:59:44,717 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:59:44,720 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:59:44,720 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 21:59:44,721 INFO  L87              Difference]: Start difference. First operand 5044 states and 8430 transitions. Second operand  has 5 states, 5 states have (on average 569.2) internal successors, (2846), 5 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:51,239 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:59:51,239 INFO  L93              Difference]: Finished difference Result 18229 states and 30388 transitions.
[2023-11-06 21:59:51,239 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 21:59:51,240 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 569.2) internal successors, (2846), 5 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3113
[2023-11-06 21:59:51,243 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:59:51,252 INFO  L225             Difference]: With dead ends: 18229
[2023-11-06 21:59:51,253 INFO  L226             Difference]: Without dead ends: 9518
[2023-11-06 21:59:51,258 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6225 GetRequests, 6216 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 21:59:51,259 INFO  L413           NwaCegarLoop]: 13565 mSDtfsCounter, 14068 mSDsluCounter, 19954 mSDsCounter, 0 mSdLazyCounter, 5920 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14068 SdHoareTripleChecker+Valid, 33519 SdHoareTripleChecker+Invalid, 6203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time
[2023-11-06 21:59:51,259 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14068 Valid, 33519 Invalid, 6203 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 5920 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time]
[2023-11-06 21:59:51,271 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9518 states.
[2023-11-06 21:59:51,327 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9518 to 5046.
[2023-11-06 21:59:51,331 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5046 states, 5045 states have (on average 1.6713577799801784) internal successors, (8432), 5045 states have internal predecessors, (8432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:51,338 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5046 states to 5046 states and 8432 transitions.
[2023-11-06 21:59:51,338 INFO  L78                 Accepts]: Start accepts. Automaton has 5046 states and 8432 transitions. Word has length 3113
[2023-11-06 21:59:51,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:59:51,341 INFO  L495      AbstractCegarLoop]: Abstraction has 5046 states and 8432 transitions.
[2023-11-06 21:59:51,342 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 569.2) internal successors, (2846), 5 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 21:59:51,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 5046 states and 8432 transitions.
[2023-11-06 21:59:51,417 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3115
[2023-11-06 21:59:51,417 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:59:51,418 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 21:59:51,456 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2023-11-06 21:59:51,619 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-11-06 21:59:51,619 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:59:51,619 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:59:51,620 INFO  L85        PathProgramCache]: Analyzing trace with hash 1815266831, now seen corresponding path program 1 times
[2023-11-06 21:59:51,620 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:59:51,620 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054594625]
[2023-11-06 21:59:51,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:59:51,621 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:59:51,896 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 21:59:51,896 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139111931]
[2023-11-06 21:59:51,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:59:51,898 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 21:59:51,898 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:59:51,899 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 21:59:51,917 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-06 21:59:56,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:59:56,285 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12635 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 21:59:56,322 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 21:59:56,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 18 proven. 257 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-11-06 21:59:56,871 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 21:59:57,016 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked.
[2023-11-06 21:59:57,017 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:59:57,017 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054594625]
[2023-11-06 21:59:57,017 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 21:59:57,017 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139111931]
[2023-11-06 21:59:57,017 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139111931] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 21:59:57,017 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 21:59:57,019 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 21:59:57,019 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329718815]
[2023-11-06 21:59:57,020 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:59:57,022 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:59:57,022 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:59:57,024 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:59:57,024 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 21:59:57,025 INFO  L87              Difference]: Start difference. First operand 5046 states and 8432 transitions. Second operand  has 5 states, 5 states have (on average 569.8) internal successors, (2849), 5 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:00:02,574 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:00:02,575 INFO  L93              Difference]: Finished difference Result 18237 states and 30396 transitions.
[2023-11-06 22:00:02,575 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:00:02,576 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 569.8) internal successors, (2849), 5 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3114
[2023-11-06 22:00:02,579 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:00:02,588 INFO  L225             Difference]: With dead ends: 18237
[2023-11-06 22:00:02,588 INFO  L226             Difference]: Without dead ends: 9519
[2023-11-06 22:00:02,594 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6227 GetRequests, 6218 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 22:00:02,595 INFO  L413           NwaCegarLoop]: 13557 mSDtfsCounter, 20668 mSDsluCounter, 13188 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20668 SdHoareTripleChecker+Valid, 26745 SdHoareTripleChecker+Invalid, 4591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:00:02,595 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20668 Valid, 26745 Invalid, 4591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-11-06 22:00:02,605 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9519 states.
[2023-11-06 22:00:02,686 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9519 to 5048.
[2023-11-06 22:00:02,692 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5048 states, 5047 states have (on average 1.6710917376659402) internal successors, (8434), 5047 states have internal predecessors, (8434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:00:02,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 8434 transitions.
[2023-11-06 22:00:02,703 INFO  L78                 Accepts]: Start accepts. Automaton has 5048 states and 8434 transitions. Word has length 3114
[2023-11-06 22:00:02,706 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:00:02,706 INFO  L495      AbstractCegarLoop]: Abstraction has 5048 states and 8434 transitions.
[2023-11-06 22:00:02,707 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 569.8) internal successors, (2849), 5 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:00:02,708 INFO  L276                IsEmpty]: Start isEmpty. Operand 5048 states and 8434 transitions.
[2023-11-06 22:00:02,781 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3116
[2023-11-06 22:00:02,781 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:00:02,782 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 22:00:02,822 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2023-11-06 22:00:02,982 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-11-06 22:00:02,983 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:00:02,983 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:00:02,984 INFO  L85        PathProgramCache]: Analyzing trace with hash 1639459609, now seen corresponding path program 1 times
[2023-11-06 22:00:02,984 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:00:02,984 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749397686]
[2023-11-06 22:00:02,985 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:00:02,985 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:00:03,274 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:00:03,274 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790991208]
[2023-11-06 22:00:03,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:00:03,276 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:00:03,276 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:00:03,277 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:00:03,281 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-06 22:00:07,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:00:07,200 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12638 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 22:00:07,239 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:00:07,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 20 proven. 257 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-11-06 22:00:07,866 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:00:08,013 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-11-06 22:00:08,014 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:00:08,014 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749397686]
[2023-11-06 22:00:08,014 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:00:08,014 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790991208]
[2023-11-06 22:00:08,014 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [790991208] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 22:00:08,014 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 22:00:08,016 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 22:00:08,017 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399816004]
[2023-11-06 22:00:08,017 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:00:08,019 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:00:08,020 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:00:08,023 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:00:08,023 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 22:00:08,024 INFO  L87              Difference]: Start difference. First operand 5048 states and 8434 transitions. Second operand  has 5 states, 5 states have (on average 570.4) internal successors, (2852), 5 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:00:14,190 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:00:14,190 INFO  L93              Difference]: Finished difference Result 18245 states and 30404 transitions.
[2023-11-06 22:00:14,198 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:00:14,199 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 570.4) internal successors, (2852), 5 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3115
[2023-11-06 22:00:14,201 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:00:14,211 INFO  L225             Difference]: With dead ends: 18245
[2023-11-06 22:00:14,211 INFO  L226             Difference]: Without dead ends: 9520
[2023-11-06 22:00:14,216 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6229 GetRequests, 6220 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 22:00:14,217 INFO  L413           NwaCegarLoop]: 13549 mSDtfsCounter, 14056 mSDsluCounter, 19934 mSDsCounter, 0 mSdLazyCounter, 5920 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14056 SdHoareTripleChecker+Valid, 33483 SdHoareTripleChecker+Invalid, 6203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2023-11-06 22:00:14,217 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14056 Valid, 33483 Invalid, 6203 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 5920 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2023-11-06 22:00:14,228 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9520 states.
[2023-11-06 22:00:14,304 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9520 to 5050.
[2023-11-06 22:00:14,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5050 states, 5049 states have (on average 1.6708259061200237) internal successors, (8436), 5049 states have internal predecessors, (8436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:00:14,316 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5050 states to 5050 states and 8436 transitions.
[2023-11-06 22:00:14,316 INFO  L78                 Accepts]: Start accepts. Automaton has 5050 states and 8436 transitions. Word has length 3115
[2023-11-06 22:00:14,318 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:00:14,318 INFO  L495      AbstractCegarLoop]: Abstraction has 5050 states and 8436 transitions.
[2023-11-06 22:00:14,319 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 570.4) internal successors, (2852), 5 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:00:14,319 INFO  L276                IsEmpty]: Start isEmpty. Operand 5050 states and 8436 transitions.
[2023-11-06 22:00:14,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3117
[2023-11-06 22:00:14,367 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:00:14,368 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 22:00:14,420 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2023-11-06 22:00:14,589 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2023-11-06 22:00:14,590 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:00:14,590 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:00:14,591 INFO  L85        PathProgramCache]: Analyzing trace with hash 128841065, now seen corresponding path program 1 times
[2023-11-06 22:00:14,591 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:00:14,591 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400960734]
[2023-11-06 22:00:14,591 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:00:14,591 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:00:14,880 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:00:14,880 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353804068]
[2023-11-06 22:00:14,881 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:00:14,881 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:00:14,881 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:00:14,882 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:00:14,884 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-06 22:00:18,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:00:18,767 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12641 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 22:00:18,817 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:00:19,289 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 22 proven. 257 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-11-06 22:00:19,290 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:00:19,465 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked.
[2023-11-06 22:00:19,465 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:00:19,465 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400960734]
[2023-11-06 22:00:19,465 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:00:19,465 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353804068]
[2023-11-06 22:00:19,466 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353804068] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 22:00:19,466 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 22:00:19,467 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 22:00:19,468 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050537741]
[2023-11-06 22:00:19,468 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:00:19,470 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:00:19,470 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:00:19,472 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:00:19,473 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 22:00:19,474 INFO  L87              Difference]: Start difference. First operand 5050 states and 8436 transitions. Second operand  has 5 states, 5 states have (on average 571.0) internal successors, (2855), 5 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:00:25,512 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:00:25,512 INFO  L93              Difference]: Finished difference Result 18253 states and 30412 transitions.
[2023-11-06 22:00:25,512 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:00:25,513 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 571.0) internal successors, (2855), 5 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3116
[2023-11-06 22:00:25,517 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:00:25,527 INFO  L225             Difference]: With dead ends: 18253
[2023-11-06 22:00:25,527 INFO  L226             Difference]: Without dead ends: 9521
[2023-11-06 22:00:25,533 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6231 GetRequests, 6222 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 22:00:25,534 INFO  L413           NwaCegarLoop]: 13541 mSDtfsCounter, 14050 mSDsluCounter, 19924 mSDsCounter, 0 mSdLazyCounter, 5920 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14050 SdHoareTripleChecker+Valid, 33465 SdHoareTripleChecker+Invalid, 6203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-11-06 22:00:25,534 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14050 Valid, 33465 Invalid, 6203 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 5920 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-11-06 22:00:25,546 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9521 states.
[2023-11-06 22:00:25,617 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9521 to 5052.
[2023-11-06 22:00:25,621 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5052 states, 5051 states have (on average 1.670560285092061) internal successors, (8438), 5051 states have internal predecessors, (8438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:00:25,629 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 8438 transitions.
[2023-11-06 22:00:25,629 INFO  L78                 Accepts]: Start accepts. Automaton has 5052 states and 8438 transitions. Word has length 3116
[2023-11-06 22:00:25,631 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:00:25,631 INFO  L495      AbstractCegarLoop]: Abstraction has 5052 states and 8438 transitions.
[2023-11-06 22:00:25,632 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 571.0) internal successors, (2855), 5 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:00:25,632 INFO  L276                IsEmpty]: Start isEmpty. Operand 5052 states and 8438 transitions.
[2023-11-06 22:00:25,688 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3118
[2023-11-06 22:00:25,689 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:00:25,689 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 22:00:25,729 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2023-11-06 22:00:25,890 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-11-06 22:00:25,890 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:00:25,891 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:00:25,892 INFO  L85        PathProgramCache]: Analyzing trace with hash -612632385, now seen corresponding path program 1 times
[2023-11-06 22:00:25,892 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:00:25,892 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942095628]
[2023-11-06 22:00:25,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:00:25,893 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:00:26,144 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:00:26,145 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953316404]
[2023-11-06 22:00:26,146 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:00:26,146 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:00:26,147 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:00:26,148 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:00:26,169 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ab4e64-31b8-4d41-ab65-3f0d924d7e87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process