./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version e7bb482b
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/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_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/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_9c1728a7-fc10-4749-84e5-dfb4781cda60/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 cd0681b440abfcb019b4847aa7480adf2cb07ebcbfbab0f8c913a2f410c53f5c
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 23:09:26,292 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 23:09:26,381 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 23:09:26,387 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 23:09:26,387 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 23:09:26,414 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 23:09:26,415 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 23:09:26,415 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 23:09:26,416 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 23:09:26,417 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 23:09:26,418 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 23:09:26,418 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 23:09:26,419 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 23:09:26,419 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 23:09:26,420 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 23:09:26,420 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 23:09:26,421 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 23:09:26,421 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 23:09:26,422 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 23:09:26,422 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 23:09:26,423 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 23:09:26,424 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 23:09:26,424 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 23:09:26,425 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 23:09:26,425 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 23:09:26,425 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 23:09:26,426 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 23:09:26,426 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 23:09:26,427 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 23:09:26,427 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 23:09:26,428 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 23:09:26,428 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 23:09:26,428 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 23:09:26,429 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 23:09:26,429 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 23:09:26,429 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 23:09:26,429 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_9c1728a7-fc10-4749-84e5-dfb4781cda60/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_9c1728a7-fc10-4749-84e5-dfb4781cda60/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 -> cd0681b440abfcb019b4847aa7480adf2cb07ebcbfbab0f8c913a2f410c53f5c
[2023-11-06 23:09:26,747 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 23:09:26,780 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 23:09:26,783 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 23:09:26,785 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 23:09:26,785 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 23:09:26,786 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-func-interl.c
[2023-11-06 23:09:29,935 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 23:09:30,415 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 23:09:30,415 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-func-interl.c
[2023-11-06 23:09:30,447 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/data/20c68b7dc/20e1ea1519984556b6159496393d08f0/FLAGb33727b83
[2023-11-06 23:09:30,467 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/data/20c68b7dc/20e1ea1519984556b6159496393d08f0
[2023-11-06 23:09:30,474 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 23:09:30,476 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 23:09:30,479 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 23:09:30,480 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 23:09:30,486 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 23:09:30,489 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:30" (1/1) ...
[2023-11-06 23:09:30,490 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17cc7b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:30, skipping insertion in model container
[2023-11-06 23:09:30,490 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:30" (1/1) ...
[2023-11-06 23:09:30,637 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 23:09:30,913 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_9c1728a7-fc10-4749-84e5-dfb4781cda60/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-func-interl.c[1174,1187]
[2023-11-06 23:09:31,891 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 23:09:31,915 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 23:09:31,928 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_9c1728a7-fc10-4749-84e5-dfb4781cda60/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-func-interl.c[1174,1187]
[2023-11-06 23:09:32,448 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 23:09:32,464 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 23:09:32,465 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32 WrapperNode
[2023-11-06 23:09:32,465 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 23:09:32,466 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 23:09:32,466 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 23:09:32,466 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 23:09:32,474 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:32,618 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:34,827 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24229
[2023-11-06 23:09:34,827 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 23:09:34,828 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 23:09:34,828 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 23:09:34,829 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 23:09:34,839 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:34,839 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:35,489 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:35,489 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:36,248 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:36,345 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:36,719 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:36,798 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:37,215 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 23:09:37,216 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 23:09:37,216 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 23:09:37,216 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 23:09:37,217 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ...
[2023-11-06 23:09:37,244 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 23:09:37,264 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:09:37,277 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 23:09:37,280 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 23:09:37,308 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 23:09:37,309 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 23:09:37,309 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 23:09:37,309 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 23:09:38,381 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 23:09:38,383 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 23:09:53,972 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 23:09:54,022 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 23:09:54,023 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 23:09:54,031 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:54 BoogieIcfgContainer
[2023-11-06 23:09:54,032 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 23:09:54,037 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 23:09:54,037 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 23:09:54,041 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 23:09:54,041 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:09:30" (1/3) ...
[2023-11-06 23:09:54,043 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780f45bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:54, skipping insertion in model container
[2023-11-06 23:09:54,043 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (2/3) ...
[2023-11-06 23:09:54,044 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780f45bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:54, skipping insertion in model container
[2023-11-06 23:09:54,046 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:54" (3/3) ...
[2023-11-06 23:09:54,047 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.3.prop2-func-interl.c
[2023-11-06 23:09:54,066 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 23:09:54,066 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 23:09:54,320 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 23:09:54,325 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;@355d89ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 23:09:54,326 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 23:09:54,351 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 5788 states, 5786 states have (on average 1.670584168683028) internal successors, (9666), 5787 states have internal predecessors, (9666), 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 23:09:54,378 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 314
[2023-11-06 23:09:54,378 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:09:54,379 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]
[2023-11-06 23:09:54,379 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:09:54,386 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:09:54,387 INFO  L85        PathProgramCache]: Analyzing trace with hash -892540495, now seen corresponding path program 1 times
[2023-11-06 23:09:54,396 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:09:54,397 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467338699]
[2023-11-06 23:09:54,397 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:09:54,398 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:09:55,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:09:56,803 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 23:09:56,803 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:09:56,804 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467338699]
[2023-11-06 23:09:56,804 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467338699] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:09:56,805 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:09:56,805 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 23:09:56,806 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094198000]
[2023-11-06 23:09:56,807 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:09:56,814 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 23:09:56,814 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:09:56,860 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 23:09:56,861 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 23:09:56,878 INFO  L87              Difference]: Start difference. First operand  has 5788 states, 5786 states have (on average 1.670584168683028) internal successors, (9666), 5787 states have internal predecessors, (9666), 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 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 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 23:10:04,740 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:04,740 INFO  L93              Difference]: Finished difference Result 16998 states and 28398 transitions.
[2023-11-06 23:10:04,742 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 23:10:04,743 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 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 313
[2023-11-06 23:10:04,745 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:04,839 INFO  L225             Difference]: With dead ends: 16998
[2023-11-06 23:10:04,839 INFO  L226             Difference]: Without dead ends: 11389
[2023-11-06 23:10:04,857 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-11-06 23:10:04,861 INFO  L413           NwaCegarLoop]: 7725 mSDtfsCounter, 28080 mSDsluCounter, 15443 mSDsCounter, 0 mSdLazyCounter, 5812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28080 SdHoareTripleChecker+Valid, 23168 SdHoareTripleChecker+Invalid, 5813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2023-11-06 23:10:04,863 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28080 Valid, 23168 Invalid, 5813 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 5812 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2023-11-06 23:10:04,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11389 states.
[2023-11-06 23:10:05,137 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11389 to 6063.
[2023-11-06 23:10:05,153 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6063 states, 6062 states have (on average 1.6699109204882876) internal successors, (10123), 6062 states have internal predecessors, (10123), 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 23:10:05,176 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6063 states to 6063 states and 10123 transitions.
[2023-11-06 23:10:05,177 INFO  L78                 Accepts]: Start accepts. Automaton has 6063 states and 10123 transitions. Word has length 313
[2023-11-06 23:10:05,185 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:05,186 INFO  L495      AbstractCegarLoop]: Abstraction has 6063 states and 10123 transitions.
[2023-11-06 23:10:05,186 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 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 23:10:05,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 6063 states and 10123 transitions.
[2023-11-06 23:10:05,198 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 315
[2023-11-06 23:10:05,198 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:05,199 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]
[2023-11-06 23:10:05,199 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 23:10:05,199 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:05,200 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:05,200 INFO  L85        PathProgramCache]: Analyzing trace with hash 962207557, now seen corresponding path program 1 times
[2023-11-06 23:10:05,200 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:05,201 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171332323]
[2023-11-06 23:10:05,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:05,295 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:05,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:10:06,351 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 23:10:06,352 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:10:06,352 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171332323]
[2023-11-06 23:10:06,353 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171332323] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:10:06,353 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:10:06,353 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:10:06,353 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597298218]
[2023-11-06 23:10:06,353 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:10:06,356 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:10:06,357 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:10:06,358 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:10:06,358 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:10:06,358 INFO  L87              Difference]: Start difference. First operand 6063 states and 10123 transitions. Second operand  has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 23:10:06,552 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:06,553 INFO  L93              Difference]: Finished difference Result 6067 states and 10127 transitions.
[2023-11-06 23:10:06,553 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:10:06,554 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 314
[2023-11-06 23:10:06,556 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:06,592 INFO  L225             Difference]: With dead ends: 6067
[2023-11-06 23:10:06,592 INFO  L226             Difference]: Without dead ends: 6065
[2023-11-06 23:10:06,598 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 23:10:06,602 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 1 mSDsluCounter, 19310 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28968 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 23:10:06,603 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 28968 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:10:06,617 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6065 states.
[2023-11-06 23:10:06,728 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6065 to 6065.
[2023-11-06 23:10:06,741 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6065 states, 6064 states have (on average 1.6696899736147757) internal successors, (10125), 6064 states have internal predecessors, (10125), 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 23:10:06,761 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6065 states to 6065 states and 10125 transitions.
[2023-11-06 23:10:06,762 INFO  L78                 Accepts]: Start accepts. Automaton has 6065 states and 10125 transitions. Word has length 314
[2023-11-06 23:10:06,762 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:06,763 INFO  L495      AbstractCegarLoop]: Abstraction has 6065 states and 10125 transitions.
[2023-11-06 23:10:06,763 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 23:10:06,764 INFO  L276                IsEmpty]: Start isEmpty. Operand 6065 states and 10125 transitions.
[2023-11-06 23:10:06,769 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 316
[2023-11-06 23:10:06,769 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:06,769 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]
[2023-11-06 23:10:06,770 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 23:10:06,770 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:06,770 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:06,771 INFO  L85        PathProgramCache]: Analyzing trace with hash -234550427, now seen corresponding path program 1 times
[2023-11-06 23:10:06,771 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:06,771 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444135949]
[2023-11-06 23:10:06,771 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:06,772 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:06,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:10:07,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:10:07,589 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:10:07,590 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444135949]
[2023-11-06 23:10:07,591 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444135949] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:10:07,591 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:10:07,592 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:10:07,592 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345900930]
[2023-11-06 23:10:07,592 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:10:07,593 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:10:07,593 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:10:07,594 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:10:07,595 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:10:07,596 INFO  L87              Difference]: Start difference. First operand 6065 states and 10125 transitions. Second operand  has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 23:10:07,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:07,884 INFO  L93              Difference]: Finished difference Result 11675 states and 19494 transitions.
[2023-11-06 23:10:07,884 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:10:07,885 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 315
[2023-11-06 23:10:07,886 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:07,941 INFO  L225             Difference]: With dead ends: 11675
[2023-11-06 23:10:07,941 INFO  L226             Difference]: Without dead ends: 6068
[2023-11-06 23:10:07,961 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 23:10:07,967 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 1 mSDsluCounter, 19307 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28965 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 23:10:07,968 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 28965 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:10:07,983 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6068 states.
[2023-11-06 23:10:08,120 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6068 to 6067.
[2023-11-06 23:10:08,130 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6067 states, 6066 states have (on average 1.6694691724365316) internal successors, (10127), 6066 states have internal predecessors, (10127), 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 23:10:08,153 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6067 states to 6067 states and 10127 transitions.
[2023-11-06 23:10:08,153 INFO  L78                 Accepts]: Start accepts. Automaton has 6067 states and 10127 transitions. Word has length 315
[2023-11-06 23:10:08,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:08,155 INFO  L495      AbstractCegarLoop]: Abstraction has 6067 states and 10127 transitions.
[2023-11-06 23:10:08,156 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 23:10:08,156 INFO  L276                IsEmpty]: Start isEmpty. Operand 6067 states and 10127 transitions.
[2023-11-06 23:10:08,162 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 317
[2023-11-06 23:10:08,163 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:08,163 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]
[2023-11-06 23:10:08,164 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 23:10:08,164 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:08,164 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:08,165 INFO  L85        PathProgramCache]: Analyzing trace with hash 1106653277, now seen corresponding path program 1 times
[2023-11-06 23:10:08,165 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:08,165 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824888650]
[2023-11-06 23:10:08,166 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:08,166 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:08,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:10:09,979 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 23:10:09,979 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:10:09,980 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824888650]
[2023-11-06 23:10:09,980 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824888650] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:10:09,980 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:10:09,981 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 23:10:09,981 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961276346]
[2023-11-06 23:10:09,981 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:10:09,982 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 23:10:09,982 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:10:09,983 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 23:10:09,983 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 23:10:09,984 INFO  L87              Difference]: Start difference. First operand 6067 states and 10127 transitions. Second operand  has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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 23:10:10,607 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:10,607 INFO  L93              Difference]: Finished difference Result 17275 states and 28846 transitions.
[2023-11-06 23:10:10,608 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 23:10:10,608 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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 316
[2023-11-06 23:10:10,610 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:10,634 INFO  L225             Difference]: With dead ends: 17275
[2023-11-06 23:10:10,635 INFO  L226             Difference]: Without dead ends: 11666
[2023-11-06 23:10:10,645 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-06 23:10:10,653 INFO  L413           NwaCegarLoop]: 10109 mSDtfsCounter, 37872 mSDsluCounter, 19293 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37872 SdHoareTripleChecker+Valid, 29402 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:10:10,654 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37872 Valid, 29402 Invalid, 39 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:10:10,676 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11666 states.
[2023-11-06 23:10:10,848 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11666 to 6069.
[2023-11-06 23:10:10,858 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6069 states, 6068 states have (on average 1.6692485168094924) internal successors, (10129), 6068 states have internal predecessors, (10129), 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 23:10:10,876 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10129 transitions.
[2023-11-06 23:10:10,877 INFO  L78                 Accepts]: Start accepts. Automaton has 6069 states and 10129 transitions. Word has length 316
[2023-11-06 23:10:10,878 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:10,878 INFO  L495      AbstractCegarLoop]: Abstraction has 6069 states and 10129 transitions.
[2023-11-06 23:10:10,878 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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 23:10:10,879 INFO  L276                IsEmpty]: Start isEmpty. Operand 6069 states and 10129 transitions.
[2023-11-06 23:10:11,306 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 23:10:11,306 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:11,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:11,310 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-06 23:10:11,310 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:11,311 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:11,313 INFO  L85        PathProgramCache]: Analyzing trace with hash 596594063, now seen corresponding path program 1 times
[2023-11-06 23:10:11,313 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:11,313 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078709712]
[2023-11-06 23:10:11,314 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:11,314 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:11,999 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:10:11,999 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173532974]
[2023-11-06 23:10:12,001 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:12,001 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:12,002 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:10:12,012 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:10:12,029 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 23:10:17,232 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:10:17,335 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16278 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 23:10:17,474 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:10:17,771 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:10:17,771 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:10:17,771 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:10:17,771 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078709712]
[2023-11-06 23:10:17,772 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:10:17,772 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173532974]
[2023-11-06 23:10:17,772 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [173532974] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:10:17,772 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:10:17,774 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:10:17,774 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028996750]
[2023-11-06 23:10:17,775 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:10:17,782 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:10:17,782 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:10:17,788 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:10:17,789 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:10:17,791 INFO  L87              Difference]: Start difference. First operand 6069 states and 10129 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:18,042 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:18,043 INFO  L93              Difference]: Finished difference Result 11688 states and 19512 transitions.
[2023-11-06 23:10:18,043 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:10:18,045 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 3929
[2023-11-06 23:10:18,046 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:18,059 INFO  L225             Difference]: With dead ends: 11688
[2023-11-06 23:10:18,059 INFO  L226             Difference]: Without dead ends: 6079
[2023-11-06 23:10:18,067 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 23:10:18,068 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 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 23:10:18,069 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:10:18,084 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6079 states.
[2023-11-06 23:10:18,207 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6079 to 6071.
[2023-11-06 23:10:18,216 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6071 states, 6070 states have (on average 1.6690280065897858) internal successors, (10131), 6070 states have internal predecessors, (10131), 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 23:10:18,248 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6071 states to 6071 states and 10131 transitions.
[2023-11-06 23:10:18,249 INFO  L78                 Accepts]: Start accepts. Automaton has 6071 states and 10131 transitions. Word has length 3929
[2023-11-06 23:10:18,253 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:18,253 INFO  L495      AbstractCegarLoop]: Abstraction has 6071 states and 10131 transitions.
[2023-11-06 23:10:18,255 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:18,255 INFO  L276                IsEmpty]: Start isEmpty. Operand 6071 states and 10131 transitions.
[2023-11-06 23:10:18,605 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 23:10:18,605 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:18,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:18,666 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-06 23:10:18,827 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:18,828 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:18,830 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:18,831 INFO  L85        PathProgramCache]: Analyzing trace with hash 2110614913, now seen corresponding path program 1 times
[2023-11-06 23:10:18,831 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:18,832 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905507218]
[2023-11-06 23:10:18,832 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:18,832 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:19,314 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:10:19,314 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110703751]
[2023-11-06 23:10:19,316 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:19,316 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:19,316 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:10:19,321 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:10:19,346 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-06 23:10:24,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:10:24,342 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16279 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 23:10:24,431 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:10:24,586 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:10:24,587 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:10:24,587 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:10:24,588 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905507218]
[2023-11-06 23:10:24,589 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:10:24,591 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110703751]
[2023-11-06 23:10:24,591 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110703751] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:10:24,591 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:10:24,593 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:10:24,593 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414547257]
[2023-11-06 23:10:24,593 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:10:24,598 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:10:24,599 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:10:24,603 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:10:24,609 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:10:24,611 INFO  L87              Difference]: Start difference. First operand 6071 states and 10131 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:24,899 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:24,899 INFO  L93              Difference]: Finished difference Result 11691 states and 19514 transitions.
[2023-11-06 23:10:24,899 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:10:24,900 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 3929
[2023-11-06 23:10:24,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:24,912 INFO  L225             Difference]: With dead ends: 11691
[2023-11-06 23:10:24,912 INFO  L226             Difference]: Without dead ends: 6080
[2023-11-06 23:10:24,917 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 23:10:24,918 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 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 23:10:24,919 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:10:24,928 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6080 states.
[2023-11-06 23:10:25,010 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6080 to 6072.
[2023-11-06 23:10:25,019 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6072 states, 6071 states have (on average 1.6689178059627738) internal successors, (10132), 6071 states have internal predecessors, (10132), 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 23:10:25,030 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 10132 transitions.
[2023-11-06 23:10:25,030 INFO  L78                 Accepts]: Start accepts. Automaton has 6072 states and 10132 transitions. Word has length 3929
[2023-11-06 23:10:25,032 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:25,032 INFO  L495      AbstractCegarLoop]: Abstraction has 6072 states and 10132 transitions.
[2023-11-06 23:10:25,033 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:25,033 INFO  L276                IsEmpty]: Start isEmpty. Operand 6072 states and 10132 transitions.
[2023-11-06 23:10:25,143 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 23:10:25,143 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:25,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:25,192 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-06 23:10:25,368 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:25,368 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:25,369 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:25,370 INFO  L85        PathProgramCache]: Analyzing trace with hash 1821445363, now seen corresponding path program 1 times
[2023-11-06 23:10:25,370 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:25,370 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677635962]
[2023-11-06 23:10:25,371 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:25,371 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:25,845 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:10:25,845 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904172046]
[2023-11-06 23:10:25,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:25,846 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:25,847 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:10:25,848 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:10:25,853 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-06 23:10:30,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:10:30,744 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16280 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 23:10:31,051 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:10:31,193 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:10:31,193 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:10:31,193 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:10:31,194 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677635962]
[2023-11-06 23:10:31,194 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:10:31,194 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904172046]
[2023-11-06 23:10:31,194 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904172046] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:10:31,194 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:10:31,196 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:10:31,196 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118315469]
[2023-11-06 23:10:31,196 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:10:31,201 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:10:31,202 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:10:31,206 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:10:31,206 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:10:31,208 INFO  L87              Difference]: Start difference. First operand 6072 states and 10132 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:31,383 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:31,383 INFO  L93              Difference]: Finished difference Result 11693 states and 19516 transitions.
[2023-11-06 23:10:31,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:10:31,385 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 3929
[2023-11-06 23:10:31,387 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:31,397 INFO  L225             Difference]: With dead ends: 11693
[2023-11-06 23:10:31,397 INFO  L226             Difference]: Without dead ends: 6081
[2023-11-06 23:10:31,405 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 23:10:31,406 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 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 23:10:31,407 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:10:31,416 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6081 states.
[2023-11-06 23:10:31,497 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 6073.
[2023-11-06 23:10:31,506 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6073 states, 6072 states have (on average 1.6688076416337285) internal successors, (10133), 6072 states have internal predecessors, (10133), 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 23:10:31,516 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6073 states to 6073 states and 10133 transitions.
[2023-11-06 23:10:31,517 INFO  L78                 Accepts]: Start accepts. Automaton has 6073 states and 10133 transitions. Word has length 3929
[2023-11-06 23:10:31,519 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:31,519 INFO  L495      AbstractCegarLoop]: Abstraction has 6073 states and 10133 transitions.
[2023-11-06 23:10:31,520 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:31,521 INFO  L276                IsEmpty]: Start isEmpty. Operand 6073 states and 10133 transitions.
[2023-11-06 23:10:31,631 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 23:10:31,631 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:31,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:31,687 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-06 23:10:31,851 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:31,851 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:31,852 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:31,853 INFO  L85        PathProgramCache]: Analyzing trace with hash 868403045, now seen corresponding path program 1 times
[2023-11-06 23:10:31,853 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:31,853 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559154356]
[2023-11-06 23:10:31,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:31,854 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:32,408 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:10:32,409 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944901705]
[2023-11-06 23:10:32,410 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:32,410 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:32,410 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:10:32,411 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:10:32,428 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-06 23:10:37,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:10:37,157 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16281 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 23:10:37,261 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:10:37,398 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:10:37,398 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:10:37,398 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:10:37,399 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559154356]
[2023-11-06 23:10:37,399 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:10:37,399 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944901705]
[2023-11-06 23:10:37,399 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944901705] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:10:37,399 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:10:37,401 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:10:37,401 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440871342]
[2023-11-06 23:10:37,402 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:10:37,407 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:10:37,407 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:10:37,412 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:10:37,412 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:10:37,414 INFO  L87              Difference]: Start difference. First operand 6073 states and 10133 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:37,582 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:37,582 INFO  L93              Difference]: Finished difference Result 11695 states and 19518 transitions.
[2023-11-06 23:10:37,585 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:10:37,587 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 3929
[2023-11-06 23:10:37,588 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:37,598 INFO  L225             Difference]: With dead ends: 11695
[2023-11-06 23:10:37,599 INFO  L226             Difference]: Without dead ends: 6082
[2023-11-06 23:10:37,605 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 23:10:37,607 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 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 23:10:37,607 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:10:37,617 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6082 states.
[2023-11-06 23:10:37,694 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6082 to 6074.
[2023-11-06 23:10:37,702 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6074 states, 6073 states have (on average 1.6686975135847193) internal successors, (10134), 6073 states have internal predecessors, (10134), 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 23:10:37,713 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 10134 transitions.
[2023-11-06 23:10:37,713 INFO  L78                 Accepts]: Start accepts. Automaton has 6074 states and 10134 transitions. Word has length 3929
[2023-11-06 23:10:37,715 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:37,715 INFO  L495      AbstractCegarLoop]: Abstraction has 6074 states and 10134 transitions.
[2023-11-06 23:10:37,717 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:37,717 INFO  L276                IsEmpty]: Start isEmpty. Operand 6074 states and 10134 transitions.
[2023-11-06 23:10:37,800 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 23:10:37,800 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:37,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:37,842 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-06 23:10:38,003 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:38,003 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:38,004 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:38,005 INFO  L85        PathProgramCache]: Analyzing trace with hash 454213939, now seen corresponding path program 1 times
[2023-11-06 23:10:38,005 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:38,005 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398447482]
[2023-11-06 23:10:38,006 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:38,007 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:38,358 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:10:38,359 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477100329]
[2023-11-06 23:10:38,360 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:38,360 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:38,360 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:10:38,362 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:10:38,365 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-06 23:10:42,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:10:43,061 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16282 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 23:10:43,134 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:10:43,264 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:10:43,264 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:10:43,265 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:10:43,265 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398447482]
[2023-11-06 23:10:43,265 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:10:43,265 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477100329]
[2023-11-06 23:10:43,265 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [477100329] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:10:43,266 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:10:43,267 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:10:43,267 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428164207]
[2023-11-06 23:10:43,267 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:10:43,273 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:10:43,273 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:10:43,277 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:10:43,278 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:10:43,280 INFO  L87              Difference]: Start difference. First operand 6074 states and 10134 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:43,450 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:43,451 INFO  L93              Difference]: Finished difference Result 11697 states and 19520 transitions.
[2023-11-06 23:10:43,451 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:10:43,453 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 3929
[2023-11-06 23:10:43,454 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:43,464 INFO  L225             Difference]: With dead ends: 11697
[2023-11-06 23:10:43,465 INFO  L226             Difference]: Without dead ends: 6083
[2023-11-06 23:10:43,472 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 23:10:43,474 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 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 23:10:43,475 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:10:43,484 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6083 states.
[2023-11-06 23:10:43,562 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6083 to 6075.
[2023-11-06 23:10:43,570 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6075 states, 6074 states have (on average 1.6685874217978267) internal successors, (10135), 6074 states have internal predecessors, (10135), 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 23:10:43,581 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6075 states to 6075 states and 10135 transitions.
[2023-11-06 23:10:43,581 INFO  L78                 Accepts]: Start accepts. Automaton has 6075 states and 10135 transitions. Word has length 3929
[2023-11-06 23:10:43,583 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:43,583 INFO  L495      AbstractCegarLoop]: Abstraction has 6075 states and 10135 transitions.
[2023-11-06 23:10:43,585 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:43,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 6075 states and 10135 transitions.
[2023-11-06 23:10:43,695 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 23:10:43,695 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:43,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:43,759 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-06 23:10:43,920 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:43,921 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:43,921 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:43,922 INFO  L85        PathProgramCache]: Analyzing trace with hash 1101037569, now seen corresponding path program 1 times
[2023-11-06 23:10:43,923 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:43,923 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667665535]
[2023-11-06 23:10:43,923 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:43,924 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:44,310 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:10:44,310 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565111479]
[2023-11-06 23:10:44,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:44,312 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:44,312 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:10:44,313 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:10:44,321 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-06 23:10:48,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:10:48,973 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16283 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 23:10:49,191 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:10:49,317 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:10:49,317 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:10:49,317 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:10:49,317 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667665535]
[2023-11-06 23:10:49,318 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:10:49,318 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565111479]
[2023-11-06 23:10:49,318 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565111479] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:10:49,318 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:10:49,319 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:10:49,320 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650688311]
[2023-11-06 23:10:49,320 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:10:49,325 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:10:49,325 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:10:49,329 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:10:49,330 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:10:49,331 INFO  L87              Difference]: Start difference. First operand 6075 states and 10135 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:49,501 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:49,502 INFO  L93              Difference]: Finished difference Result 11699 states and 19522 transitions.
[2023-11-06 23:10:49,502 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:10:49,504 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 3929
[2023-11-06 23:10:49,507 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:49,517 INFO  L225             Difference]: With dead ends: 11699
[2023-11-06 23:10:49,517 INFO  L226             Difference]: Without dead ends: 6084
[2023-11-06 23:10:49,523 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 23:10:49,524 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 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 23:10:49,524 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:10:49,533 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6084 states.
[2023-11-06 23:10:49,609 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 6076.
[2023-11-06 23:10:49,616 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6076 states, 6075 states have (on average 1.668477366255144) internal successors, (10136), 6075 states have internal predecessors, (10136), 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 23:10:49,627 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 10136 transitions.
[2023-11-06 23:10:49,627 INFO  L78                 Accepts]: Start accepts. Automaton has 6076 states and 10136 transitions. Word has length 3929
[2023-11-06 23:10:49,630 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:49,630 INFO  L495      AbstractCegarLoop]: Abstraction has 6076 states and 10136 transitions.
[2023-11-06 23:10:49,632 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:49,632 INFO  L276                IsEmpty]: Start isEmpty. Operand 6076 states and 10136 transitions.
[2023-11-06 23:10:49,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 23:10:49,742 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:49,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:49,800 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-06 23:10:49,960 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-06 23:10:49,960 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:49,961 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:49,962 INFO  L85        PathProgramCache]: Analyzing trace with hash -356827697, now seen corresponding path program 1 times
[2023-11-06 23:10:49,962 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:49,962 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48478976]
[2023-11-06 23:10:49,963 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:49,963 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:50,304 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:10:50,304 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846188416]
[2023-11-06 23:10:50,305 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:50,305 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:50,306 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:10:50,307 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:10:50,328 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-06 23:10:54,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:10:55,038 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16284 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 23:10:55,093 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:10:55,223 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:10:55,224 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:10:55,224 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:10:55,224 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48478976]
[2023-11-06 23:10:55,224 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:10:55,224 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846188416]
[2023-11-06 23:10:55,225 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846188416] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:10:55,225 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:10:55,226 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:10:55,228 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162748443]
[2023-11-06 23:10:55,229 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:10:55,234 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:10:55,235 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:10:55,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:10:55,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:10:55,243 INFO  L87              Difference]: Start difference. First operand 6076 states and 10136 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:55,414 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:10:55,415 INFO  L93              Difference]: Finished difference Result 11701 states and 19524 transitions.
[2023-11-06 23:10:55,415 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:10:55,417 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 3929
[2023-11-06 23:10:55,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:10:55,436 INFO  L225             Difference]: With dead ends: 11701
[2023-11-06 23:10:55,437 INFO  L226             Difference]: Without dead ends: 6085
[2023-11-06 23:10:55,442 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 23:10:55,443 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 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 23:10:55,444 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:10:55,453 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6085 states.
[2023-11-06 23:10:55,527 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6085 to 6077.
[2023-11-06 23:10:55,534 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6077 states, 6076 states have (on average 1.6683673469387754) internal successors, (10137), 6076 states have internal predecessors, (10137), 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 23:10:55,545 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 10137 transitions.
[2023-11-06 23:10:55,545 INFO  L78                 Accepts]: Start accepts. Automaton has 6077 states and 10137 transitions. Word has length 3929
[2023-11-06 23:10:55,548 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:10:55,548 INFO  L495      AbstractCegarLoop]: Abstraction has 6077 states and 10137 transitions.
[2023-11-06 23:10:55,550 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:10:55,550 INFO  L276                IsEmpty]: Start isEmpty. Operand 6077 states and 10137 transitions.
[2023-11-06 23:10:55,668 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 23:10:55,669 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:10:55,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:55,728 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-11-06 23:10:55,897 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-06 23:10:55,898 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:10:55,898 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:10:55,899 INFO  L85        PathProgramCache]: Analyzing trace with hash 974766237, now seen corresponding path program 1 times
[2023-11-06 23:10:55,899 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:10:55,899 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48392121]
[2023-11-06 23:10:55,900 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:55,900 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:10:56,197 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:10:56,198 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79696980]
[2023-11-06 23:10:56,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:10:56,199 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:10:56,199 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:10:56,200 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:10:56,224 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-06 23:11:00,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:11:00,871 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16285 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 23:11:00,919 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:11:01,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:11:01,029 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:11:01,029 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:11:01,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48392121]
[2023-11-06 23:11:01,029 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:11:01,030 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79696980]
[2023-11-06 23:11:01,030 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [79696980] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:11:01,030 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:11:01,031 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:11:01,032 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302116708]
[2023-11-06 23:11:01,032 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:11:01,037 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:11:01,038 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:11:01,042 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:11:01,042 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:11:01,044 INFO  L87              Difference]: Start difference. First operand 6077 states and 10137 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:11:01,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:11:01,215 INFO  L93              Difference]: Finished difference Result 11703 states and 19526 transitions.
[2023-11-06 23:11:01,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:11:01,217 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 3929
[2023-11-06 23:11:01,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:11:01,234 INFO  L225             Difference]: With dead ends: 11703
[2023-11-06 23:11:01,234 INFO  L226             Difference]: Without dead ends: 6086
[2023-11-06 23:11:01,243 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 23:11:01,244 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 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 23:11:01,244 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:11:01,252 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6086 states.
[2023-11-06 23:11:01,311 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 6078.
[2023-11-06 23:11:01,319 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6078 states, 6077 states have (on average 1.6682573638308376) internal successors, (10138), 6077 states have internal predecessors, (10138), 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 23:11:01,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 10138 transitions.
[2023-11-06 23:11:01,329 INFO  L78                 Accepts]: Start accepts. Automaton has 6078 states and 10138 transitions. Word has length 3929
[2023-11-06 23:11:01,339 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:11:01,339 INFO  L495      AbstractCegarLoop]: Abstraction has 6078 states and 10138 transitions.
[2023-11-06 23:11:01,341 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 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 23:11:01,341 INFO  L276                IsEmpty]: Start isEmpty. Operand 6078 states and 10138 transitions.
[2023-11-06 23:11:01,448 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 23:11:01,449 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:11:01,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:01,504 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-11-06 23:11:01,664 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-06 23:11:01,665 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:11:01,665 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:11:01,666 INFO  L85        PathProgramCache]: Analyzing trace with hash -1451718293, now seen corresponding path program 1 times
[2023-11-06 23:11:01,666 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:11:01,667 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668848860]
[2023-11-06 23:11:01,667 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:01,667 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:11:02,004 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:11:02,004 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166049796]
[2023-11-06 23:11:02,005 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:02,005 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:11:02,005 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:11:02,006 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:11:02,018 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-06 23:11:06,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:11:06,632 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16286 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-06 23:11:06,695 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:11:28,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:11:28,165 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:11:28,165 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:11:28,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668848860]
[2023-11-06 23:11:28,165 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:11:28,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166049796]
[2023-11-06 23:11:28,165 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166049796] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:11:28,166 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:11:28,167 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 23:11:28,167 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297367051]
[2023-11-06 23:11:28,167 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:11:28,172 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 23:11:28,172 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:11:28,177 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 23:11:28,177 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 23:11:28,178 INFO  L87              Difference]: Start difference. First operand 6078 states and 10138 transitions. Second operand  has 5 states, 5 states have (on average 785.8) internal successors, (3929), 5 states have internal predecessors, (3929), 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 23:11:34,539 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:11:34,539 INFO  L93              Difference]: Finished difference Result 17035 states and 28425 transitions.
[2023-11-06 23:11:34,540 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 23:11:34,541 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 785.8) internal successors, (3929), 5 states have internal predecessors, (3929), 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 3929
[2023-11-06 23:11:34,548 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:11:34,561 INFO  L225             Difference]: With dead ends: 17035
[2023-11-06 23:11:34,561 INFO  L226             Difference]: Without dead ends: 11417
[2023-11-06 23:11:34,567 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3930 GetRequests, 3925 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-06 23:11:34,568 INFO  L413           NwaCegarLoop]: 8268 mSDtfsCounter, 5484 mSDsluCounter, 23705 mSDsCounter, 0 mSdLazyCounter, 6683 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5484 SdHoareTripleChecker+Valid, 31973 SdHoareTripleChecker+Invalid, 6683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:11:34,568 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5484 Valid, 31973 Invalid, 6683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6683 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time]
[2023-11-06 23:11:34,583 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11417 states.
[2023-11-06 23:11:34,724 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11417 to 11407.
[2023-11-06 23:11:34,735 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11407 states, 11406 states have (on average 1.668770822374189) internal successors, (19034), 11406 states have internal predecessors, (19034), 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 23:11:34,753 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11407 states to 11407 states and 19034 transitions.
[2023-11-06 23:11:34,754 INFO  L78                 Accepts]: Start accepts. Automaton has 11407 states and 19034 transitions. Word has length 3929
[2023-11-06 23:11:34,758 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:11:34,758 INFO  L495      AbstractCegarLoop]: Abstraction has 11407 states and 19034 transitions.
[2023-11-06 23:11:34,759 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 785.8) internal successors, (3929), 5 states have internal predecessors, (3929), 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 23:11:34,759 INFO  L276                IsEmpty]: Start isEmpty. Operand 11407 states and 19034 transitions.
[2023-11-06 23:11:34,870 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3931
[2023-11-06 23:11:34,870 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:11:34,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:34,924 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-11-06 23:11:35,100 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:11:35,100 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:11:35,101 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:11:35,102 INFO  L85        PathProgramCache]: Analyzing trace with hash -68639512, now seen corresponding path program 1 times
[2023-11-06 23:11:35,102 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:11:35,102 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863839286]
[2023-11-06 23:11:35,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:35,103 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:11:35,584 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:11:35,584 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790772769]
[2023-11-06 23:11:35,585 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:35,585 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:11:35,585 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:11:35,586 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:11:35,608 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-06 23:11:40,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:11:40,298 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16289 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 23:11:40,360 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:11:43,671 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 4 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:11:43,671 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 23:11:43,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked.
[2023-11-06 23:11:43,768 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:11:43,768 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863839286]
[2023-11-06 23:11:43,768 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:11:43,768 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790772769]
[2023-11-06 23:11:43,769 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [790772769] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 23:11:43,769 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 23:11:43,771 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2023-11-06 23:11:43,771 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173308076]
[2023-11-06 23:11:43,772 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:11:43,776 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 23:11:43,777 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:11:43,780 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 23:11:43,780 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2023-11-06 23:11:43,781 INFO  L87              Difference]: Start difference. First operand 11407 states and 19034 transitions. Second operand  has 5 states, 5 states have (on average 749.0) internal successors, (3745), 5 states have internal predecessors, (3745), 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 23:11:44,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:11:44,205 INFO  L93              Difference]: Finished difference Result 28244 states and 47134 transitions.
[2023-11-06 23:11:44,212 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 23:11:44,213 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 749.0) internal successors, (3745), 5 states have internal predecessors, (3745), 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 3930
[2023-11-06 23:11:44,218 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:11:44,238 INFO  L225             Difference]: With dead ends: 28244
[2023-11-06 23:11:44,238 INFO  L226             Difference]: Without dead ends: 17297
[2023-11-06 23:11:44,248 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7858 GetRequests, 7848 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2023-11-06 23:11:44,249 INFO  L413           NwaCegarLoop]: 28361 mSDtfsCounter, 18701 mSDsluCounter, 66352 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18701 SdHoareTripleChecker+Valid, 94713 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:11:44,250 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18701 Valid, 94713 Invalid, 37 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:11:44,269 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17297 states.
[2023-11-06 23:11:44,435 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17297 to 11401.
[2023-11-06 23:11:44,446 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11401 states, 11400 states have (on average 1.6686842105263158) internal successors, (19023), 11400 states have internal predecessors, (19023), 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 23:11:44,464 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11401 states to 11401 states and 19023 transitions.
[2023-11-06 23:11:44,464 INFO  L78                 Accepts]: Start accepts. Automaton has 11401 states and 19023 transitions. Word has length 3930
[2023-11-06 23:11:44,467 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:11:44,468 INFO  L495      AbstractCegarLoop]: Abstraction has 11401 states and 19023 transitions.
[2023-11-06 23:11:44,469 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 749.0) internal successors, (3745), 5 states have internal predecessors, (3745), 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 23:11:44,469 INFO  L276                IsEmpty]: Start isEmpty. Operand 11401 states and 19023 transitions.
[2023-11-06 23:11:44,637 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3932
[2023-11-06 23:11:44,638 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:11:44,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:44,700 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-11-06 23:11:44,856 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:11:44,856 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:11:44,857 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:11:44,859 INFO  L85        PathProgramCache]: Analyzing trace with hash -529703712, now seen corresponding path program 1 times
[2023-11-06 23:11:44,859 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:11:44,859 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439416611]
[2023-11-06 23:11:44,860 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:44,860 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:11:45,238 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:11:45,238 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800974048]
[2023-11-06 23:11:45,240 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:45,240 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:11:45,240 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:11:45,241 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:11:45,260 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-06 23:11:50,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:11:50,118 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16292 conjuncts, 55 conjunts are in the unsatisfiable core
[2023-11-06 23:11:50,172 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:12:09,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:12:09,719 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:12:09,719 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:12:09,719 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439416611]
[2023-11-06 23:12:09,719 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:12:09,720 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800974048]
[2023-11-06 23:12:09,720 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800974048] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:12:09,720 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:12:09,721 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2023-11-06 23:12:09,721 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677728474]
[2023-11-06 23:12:09,722 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:12:09,726 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2023-11-06 23:12:09,727 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:12:09,731 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2023-11-06 23:12:09,732 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306
[2023-11-06 23:12:09,733 INFO  L87              Difference]: Start difference. First operand 11401 states and 19023 transitions. Second operand  has 18 states, 18 states have (on average 218.38888888888889) internal successors, (3931), 18 states have internal predecessors, (3931), 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 23:12:38,971 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:12:38,971 INFO  L93              Difference]: Finished difference Result 43828 states and 73110 transitions.
[2023-11-06 23:12:38,972 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2023-11-06 23:12:38,972 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 218.38888888888889) internal successors, (3931), 18 states have internal predecessors, (3931), 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 3931
[2023-11-06 23:12:38,975 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:12:39,005 INFO  L225             Difference]: With dead ends: 43828
[2023-11-06 23:12:39,006 INFO  L226             Difference]: Without dead ends: 32887
[2023-11-06 23:12:39,018 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3952 GetRequests, 3914 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=336, Invalid=1224, Unknown=0, NotChecked=0, Total=1560
[2023-11-06 23:12:39,018 INFO  L413           NwaCegarLoop]: 7563 mSDtfsCounter, 113793 mSDsluCounter, 101079 mSDsCounter, 0 mSdLazyCounter, 34171 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113793 SdHoareTripleChecker+Valid, 108642 SdHoareTripleChecker+Invalid, 34735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 34171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time
[2023-11-06 23:12:39,019 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [113793 Valid, 108642 Invalid, 34735 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [564 Valid, 34171 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time]
[2023-11-06 23:12:39,048 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32887 states.
[2023-11-06 23:12:39,296 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32887 to 14028.
[2023-11-06 23:12:39,310 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14028 states, 14027 states have (on average 1.6563056961574107) internal successors, (23233), 14027 states have internal predecessors, (23233), 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 23:12:39,332 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14028 states to 14028 states and 23233 transitions.
[2023-11-06 23:12:39,332 INFO  L78                 Accepts]: Start accepts. Automaton has 14028 states and 23233 transitions. Word has length 3931
[2023-11-06 23:12:39,335 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:12:39,335 INFO  L495      AbstractCegarLoop]: Abstraction has 14028 states and 23233 transitions.
[2023-11-06 23:12:39,336 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 218.38888888888889) internal successors, (3931), 18 states have internal predecessors, (3931), 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 23:12:39,336 INFO  L276                IsEmpty]: Start isEmpty. Operand 14028 states and 23233 transitions.
[2023-11-06 23:12:39,441 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3933
[2023-11-06 23:12:39,441 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:12:39,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:12:39,501 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-11-06 23:12:39,660 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-06 23:12:39,660 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:12:39,661 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:12:39,662 INFO  L85        PathProgramCache]: Analyzing trace with hash -918983983, now seen corresponding path program 1 times
[2023-11-06 23:12:39,662 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:12:39,662 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875344005]
[2023-11-06 23:12:39,663 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:12:39,663 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:12:39,947 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:12:39,947 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446786433]
[2023-11-06 23:12:39,948 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:12:39,948 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:12:39,949 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:12:39,949 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:12:39,972 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1728a7-fc10-4749-84e5-dfb4781cda60/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-06 23:12:44,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:12:44,691 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16295 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-06 23:12:44,735 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:12:47,243 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:12:47,244 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:12:47,244 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:12:47,244 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875344005]
[2023-11-06 23:12:47,244 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:12:47,244 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446786433]
[2023-11-06 23:12:47,245 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [446786433] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:12:47,245 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:12:47,246 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-06 23:12:47,246 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249982190]
[2023-11-06 23:12:47,246 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:12:47,251 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 23:12:47,251 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:12:47,256 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 23:12:47,256 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-06 23:12:47,257 INFO  L87              Difference]: Start difference. First operand 14028 states and 23233 transitions. Second operand  has 6 states, 6 states have (on average 655.3333333333334) internal successors, (3932), 6 states have internal predecessors, (3932), 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 23:12:53,840 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:12:53,840 INFO  L93              Difference]: Finished difference Result 30522 states and 50623 transitions.
[2023-11-06 23:12:53,840 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-06 23:12:53,841 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 655.3333333333334) internal successors, (3932), 6 states have internal predecessors, (3932), 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 3932
[2023-11-06 23:12:53,843 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:12:53,856 INFO  L225             Difference]: With dead ends: 30522
[2023-11-06 23:12:53,856 INFO  L226             Difference]: Without dead ends: 19528
[2023-11-06 23:12:53,864 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3934 GetRequests, 3927 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-11-06 23:12:53,865 INFO  L413           NwaCegarLoop]: 11588 mSDtfsCounter, 12648 mSDsluCounter, 30800 mSDsCounter, 0 mSdLazyCounter, 9504 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12648 SdHoareTripleChecker+Valid, 42388 SdHoareTripleChecker+Invalid, 9505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time
[2023-11-06 23:12:53,865 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12648 Valid, 42388 Invalid, 9505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9504 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time]
[2023-11-06 23:12:53,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19528 states.