./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
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_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 473867d34e525b28e26b42df133bde96f703860ebccbeb1b29653c50d41b3f37
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 05:23:59,522 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 05:23:59,588 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 05:23:59,592 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 05:23:59,593 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 05:23:59,625 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 05:23:59,625 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 05:23:59,626 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 05:23:59,626 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 05:23:59,627 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 05:23:59,628 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 05:23:59,628 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 05:23:59,629 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 05:23:59,629 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 05:23:59,630 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 05:23:59,631 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 05:23:59,631 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 05:23:59,632 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 05:23:59,632 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 05:23:59,633 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 05:23:59,633 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 05:23:59,634 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 05:23:59,641 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 05:23:59,641 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 05:23:59,642 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 05:23:59,642 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 05:23:59,643 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 05:23:59,643 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 05:23:59,643 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:23:59,644 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 05:23:59,644 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 05:23:59,645 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 05:23:59,645 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 05:23:59,645 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 05:23:59,645 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 05:23:59,646 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 05:23:59,646 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 05:23:59,646 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 05:23:59,646 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 05:23:59,646 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_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/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_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 473867d34e525b28e26b42df133bde96f703860ebccbeb1b29653c50d41b3f37
[2023-11-29 05:23:59,871 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 05:23:59,890 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 05:23:59,893 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 05:23:59,894 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 05:23:59,895 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 05:23:59,896 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c
[2023-11-29 05:24:02,641 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 05:24:03,000 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 05:24:03,001 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c
[2023-11-29 05:24:03,025 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/data/de8f6b274/148bf14396aa4a08a95d6351822fbdff/FLAGd7f873b37
[2023-11-29 05:24:03,038 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/data/de8f6b274/148bf14396aa4a08a95d6351822fbdff
[2023-11-29 05:24:03,040 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 05:24:03,041 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 05:24:03,042 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 05:24:03,042 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 05:24:03,046 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 05:24:03,047 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:24:03" (1/1) ...
[2023-11-29 05:24:03,048 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef2db69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:03, skipping insertion in model container
[2023-11-29 05:24:03,048 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:24:03" (1/1) ...
[2023-11-29 05:24:03,167 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 05:24:03,380 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_0219bf8d-896a-4284-877c-b04fe055662f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c[1176,1189]
[2023-11-29 05:24:04,029 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:24:04,040 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 05:24:04,058 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_0219bf8d-896a-4284-877c-b04fe055662f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c[1176,1189]
[2023-11-29 05:24:04,414 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:24:04,426 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 05:24:04,426 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04 WrapperNode
[2023-11-29 05:24:04,427 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 05:24:04,427 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 05:24:04,428 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 05:24:04,428 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 05:24:04,434 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:04,541 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:06,053 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18672
[2023-11-29 05:24:06,053 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 05:24:06,054 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 05:24:06,054 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 05:24:06,054 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 05:24:06,063 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:06,063 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:06,393 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:06,652 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 05:24:06,652 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:06,653 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:06,962 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:07,034 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:07,121 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:07,178 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:07,416 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 05:24:07,417 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 05:24:07,417 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 05:24:07,417 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 05:24:07,418 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (1/1) ...
[2023-11-29 05:24:07,422 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:24:07,433 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:24:07,445 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 05:24:07,446 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 05:24:07,473 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 05:24:07,473 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 05:24:07,473 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 05:24:07,473 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 05:24:08,293 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 05:24:08,295 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 05:24:19,633 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 05:24:19,864 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 05:24:19,864 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 05:24:19,866 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:24:19 BoogieIcfgContainer
[2023-11-29 05:24:19,867 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 05:24:19,869 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 05:24:19,869 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 05:24:19,872 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 05:24:19,872 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:24:03" (1/3) ...
[2023-11-29 05:24:19,873 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d749a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:24:19, skipping insertion in model container
[2023-11-29 05:24:19,873 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:24:04" (2/3) ...
[2023-11-29 05:24:19,873 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d749a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:24:19, skipping insertion in model container
[2023-11-29 05:24:19,874 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:24:19" (3/3) ...
[2023-11-29 05:24:19,875 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.2.prop1-func-interl.c
[2023-11-29 05:24:19,889 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 05:24:19,889 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 05:24:20,000 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 05:24:20,006 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6fa315d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 05:24:20,006 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 05:24:20,022 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4292 states, 4290 states have (on average 1.6703962703962705) internal successors, (7166), 4291 states have internal predecessors, (7166), 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)
[2023-11-29 05:24:20,041 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 229
[2023-11-29 05:24:20,041 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:20,042 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]
[2023-11-29 05:24:20,043 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:20,047 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:20,047 INFO  L85        PathProgramCache]: Analyzing trace with hash 1107750039, now seen corresponding path program 1 times
[2023-11-29 05:24:20,055 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:20,055 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336701645]
[2023-11-29 05:24:20,055 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:20,056 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:20,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:21,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:21,687 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:21,687 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336701645]
[2023-11-29 05:24:21,688 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336701645] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:21,688 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:21,688 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:24:21,690 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186230471]
[2023-11-29 05:24:21,690 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:21,695 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:24:21,695 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:21,724 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:24:21,725 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:24:21,737 INFO  L87              Difference]: Start difference. First operand  has 4292 states, 4290 states have (on average 1.6703962703962705) internal successors, (7166), 4291 states have internal predecessors, (7166), 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 45.6) internal successors, (228), 4 states have internal predecessors, (228), 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)
[2023-11-29 05:24:26,244 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:26,245 INFO  L93              Difference]: Finished difference Result 12540 states and 20944 transitions.
[2023-11-29 05:24:26,245 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:24:26,247 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 45.6) internal successors, (228), 4 states have internal predecessors, (228), 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 228
[2023-11-29 05:24:26,248 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:26,299 INFO  L225             Difference]: With dead ends: 12540
[2023-11-29 05:24:26,299 INFO  L226             Difference]: Without dead ends: 8414
[2023-11-29 05:24:26,310 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:24:26,313 INFO  L413           NwaCegarLoop]: 5826 mSDtfsCounter, 20713 mSDsluCounter, 11646 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20713 SdHoareTripleChecker+Valid, 17472 SdHoareTripleChecker+Invalid, 4014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:26,314 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20713 Valid, 17472 Invalid, 4014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4013 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2023-11-29 05:24:26,340 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8414 states.
[2023-11-29 05:24:26,466 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8414 to 4455.
[2023-11-29 05:24:26,474 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4455 states, 4454 states have (on average 1.669286035024697) internal successors, (7435), 4454 states have internal predecessors, (7435), 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)
[2023-11-29 05:24:26,487 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4455 states to 4455 states and 7435 transitions.
[2023-11-29 05:24:26,488 INFO  L78                 Accepts]: Start accepts. Automaton has 4455 states and 7435 transitions. Word has length 228
[2023-11-29 05:24:26,490 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:26,490 INFO  L495      AbstractCegarLoop]: Abstraction has 4455 states and 7435 transitions.
[2023-11-29 05:24:26,491 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 45.6) internal successors, (228), 4 states have internal predecessors, (228), 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)
[2023-11-29 05:24:26,491 INFO  L276                IsEmpty]: Start isEmpty. Operand 4455 states and 7435 transitions.
[2023-11-29 05:24:26,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 230
[2023-11-29 05:24:26,497 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:26,497 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]
[2023-11-29 05:24:26,498 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 05:24:26,498 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:26,499 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:26,499 INFO  L85        PathProgramCache]: Analyzing trace with hash -1453295833, now seen corresponding path program 1 times
[2023-11-29 05:24:26,499 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:26,499 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118073989]
[2023-11-29 05:24:26,500 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:26,500 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:26,608 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:27,124 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:27,125 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:27,125 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118073989]
[2023-11-29 05:24:27,126 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118073989] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:27,126 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:27,126 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:24:27,126 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839651552]
[2023-11-29 05:24:27,126 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:27,128 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:24:27,129 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:27,129 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:24:27,130 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:27,130 INFO  L87              Difference]: Start difference. First operand 4455 states and 7435 transitions. Second operand  has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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)
[2023-11-29 05:24:27,251 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:27,251 INFO  L93              Difference]: Finished difference Result 4459 states and 7439 transitions.
[2023-11-29 05:24:27,251 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:24:27,252 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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 229
[2023-11-29 05:24:27,253 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:27,271 INFO  L225             Difference]: With dead ends: 4459
[2023-11-29 05:24:27,272 INFO  L226             Difference]: Without dead ends: 4457
[2023-11-29 05:24:27,273 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
[2023-11-29 05:24:27,274 INFO  L413           NwaCegarLoop]: 7159 mSDtfsCounter, 1 mSDsluCounter, 14313 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21472 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:27,275 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21472 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:24:27,282 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4457 states.
[2023-11-29 05:24:27,339 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 4457.
[2023-11-29 05:24:27,350 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4457 states, 4456 states have (on average 1.6689856373429084) internal successors, (7437), 4456 states have internal predecessors, (7437), 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)
[2023-11-29 05:24:27,362 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 7437 transitions.
[2023-11-29 05:24:27,362 INFO  L78                 Accepts]: Start accepts. Automaton has 4457 states and 7437 transitions. Word has length 229
[2023-11-29 05:24:27,363 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:27,363 INFO  L495      AbstractCegarLoop]: Abstraction has 4457 states and 7437 transitions.
[2023-11-29 05:24:27,364 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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)
[2023-11-29 05:24:27,364 INFO  L276                IsEmpty]: Start isEmpty. Operand 4457 states and 7437 transitions.
[2023-11-29 05:24:27,366 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 231
[2023-11-29 05:24:27,367 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:27,367 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]
[2023-11-29 05:24:27,367 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 05:24:27,367 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:27,368 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:27,368 INFO  L85        PathProgramCache]: Analyzing trace with hash -2100771571, now seen corresponding path program 1 times
[2023-11-29 05:24:27,368 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:27,369 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603855713]
[2023-11-29 05:24:27,369 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:27,369 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:27,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:27,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:27,762 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:27,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603855713]
[2023-11-29 05:24:27,762 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603855713] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:27,763 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:27,763 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:24:27,763 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815239415]
[2023-11-29 05:24:27,763 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:27,764 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:24:27,764 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:27,765 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:24:27,765 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:27,766 INFO  L87              Difference]: Start difference. First operand 4457 states and 7437 transitions. Second operand  has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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)
[2023-11-29 05:24:27,912 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:27,912 INFO  L93              Difference]: Finished difference Result 8586 states and 14329 transitions.
[2023-11-29 05:24:27,913 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:24:27,913 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 230
[2023-11-29 05:24:27,914 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:27,933 INFO  L225             Difference]: With dead ends: 8586
[2023-11-29 05:24:27,933 INFO  L226             Difference]: Without dead ends: 4460
[2023-11-29 05:24:27,937 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
[2023-11-29 05:24:27,939 INFO  L413           NwaCegarLoop]: 7159 mSDtfsCounter, 1 mSDsluCounter, 14311 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21470 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:27,940 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21470 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:24:27,948 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4460 states.
[2023-11-29 05:24:28,008 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 4459.
[2023-11-29 05:24:28,016 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4459 states, 4458 states have (on average 1.6686855091969492) internal successors, (7439), 4458 states have internal predecessors, (7439), 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)
[2023-11-29 05:24:28,030 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 7439 transitions.
[2023-11-29 05:24:28,031 INFO  L78                 Accepts]: Start accepts. Automaton has 4459 states and 7439 transitions. Word has length 230
[2023-11-29 05:24:28,031 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:28,031 INFO  L495      AbstractCegarLoop]: Abstraction has 4459 states and 7439 transitions.
[2023-11-29 05:24:28,032 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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)
[2023-11-29 05:24:28,032 INFO  L276                IsEmpty]: Start isEmpty. Operand 4459 states and 7439 transitions.
[2023-11-29 05:24:28,034 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2023-11-29 05:24:28,034 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:28,035 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:24:28,035 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 05:24:28,035 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:28,036 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:28,036 INFO  L85        PathProgramCache]: Analyzing trace with hash -909840383, now seen corresponding path program 1 times
[2023-11-29 05:24:28,036 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:28,036 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580616738]
[2023-11-29 05:24:28,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:28,036 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:28,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:28,513 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:28,514 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:28,514 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580616738]
[2023-11-29 05:24:28,514 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580616738] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:28,514 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:28,514 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 05:24:28,515 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177234879]
[2023-11-29 05:24:28,515 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:28,515 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:24:28,515 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:28,516 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:24:28,516 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:24:28,517 INFO  L87              Difference]: Start difference. First operand 4459 states and 7439 transitions. Second operand  has 6 states, 6 states have (on average 38.5) internal successors, (231), 5 states have internal predecessors, (231), 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)
[2023-11-29 05:24:28,829 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:28,829 INFO  L93              Difference]: Finished difference Result 12705 states and 21204 transitions.
[2023-11-29 05:24:28,829 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:24:28,830 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 38.5) internal successors, (231), 5 states have internal predecessors, (231), 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 231
[2023-11-29 05:24:28,830 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:28,869 INFO  L225             Difference]: With dead ends: 12705
[2023-11-29 05:24:28,869 INFO  L226             Difference]: Without dead ends: 8577
[2023-11-29 05:24:28,876 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:24:28,877 INFO  L413           NwaCegarLoop]: 7425 mSDtfsCounter, 27839 mSDsluCounter, 21726 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27839 SdHoareTripleChecker+Valid, 29151 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:28,878 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [27839 Valid, 29151 Invalid, 40 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:24:28,888 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8577 states.
[2023-11-29 05:24:28,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8577 to 4461.
[2023-11-29 05:24:28,989 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4461 states, 4460 states have (on average 1.6683856502242151) internal successors, (7441), 4460 states have internal predecessors, (7441), 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)
[2023-11-29 05:24:28,998 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 7441 transitions.
[2023-11-29 05:24:28,998 INFO  L78                 Accepts]: Start accepts. Automaton has 4461 states and 7441 transitions. Word has length 231
[2023-11-29 05:24:28,999 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:28,999 INFO  L495      AbstractCegarLoop]: Abstraction has 4461 states and 7441 transitions.
[2023-11-29 05:24:28,999 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 38.5) internal successors, (231), 5 states have internal predecessors, (231), 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)
[2023-11-29 05:24:28,999 INFO  L276                IsEmpty]: Start isEmpty. Operand 4461 states and 7441 transitions.
[2023-11-29 05:24:29,300 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2919
[2023-11-29 05:24:29,301 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:29,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:24:29,303 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 05:24:29,303 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:29,304 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:29,306 INFO  L85        PathProgramCache]: Analyzing trace with hash -446363530, now seen corresponding path program 1 times
[2023-11-29 05:24:29,306 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:29,306 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141297393]
[2023-11-29 05:24:29,306 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:29,307 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:29,709 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:24:29,709 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072601641]
[2023-11-29 05:24:29,710 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:29,710 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:29,711 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:24:29,713 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:24:29,719 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 05:24:33,043 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:33,117 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12984 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 05:24:33,205 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:24:33,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:33,341 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:24:33,342 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:33,342 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141297393]
[2023-11-29 05:24:33,342 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:24:33,342 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072601641]
[2023-11-29 05:24:33,342 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072601641] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:33,342 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:33,343 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:24:33,344 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7916137]
[2023-11-29 05:24:33,344 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:33,348 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:24:33,348 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:33,352 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:24:33,352 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:33,354 INFO  L87              Difference]: Start difference. First operand 4461 states and 7441 transitions. Second operand  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:33,517 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:33,517 INFO  L93              Difference]: Finished difference Result 8599 states and 14347 transitions.
[2023-11-29 05:24:33,517 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:24:33,519 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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 2918
[2023-11-29 05:24:33,520 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:33,531 INFO  L225             Difference]: With dead ends: 8599
[2023-11-29 05:24:33,531 INFO  L226             Difference]: Without dead ends: 4471
[2023-11-29 05:24:33,537 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:33,538 INFO  L413           NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:33,538 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:24:33,547 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4471 states.
[2023-11-29 05:24:33,623 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4463.
[2023-11-29 05:24:33,630 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4463 states, 4462 states have (on average 1.668086060062752) internal successors, (7443), 4462 states have internal predecessors, (7443), 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)
[2023-11-29 05:24:33,637 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 7443 transitions.
[2023-11-29 05:24:33,637 INFO  L78                 Accepts]: Start accepts. Automaton has 4463 states and 7443 transitions. Word has length 2918
[2023-11-29 05:24:33,639 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:33,639 INFO  L495      AbstractCegarLoop]: Abstraction has 4463 states and 7443 transitions.
[2023-11-29 05:24:33,640 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:33,640 INFO  L276                IsEmpty]: Start isEmpty. Operand 4463 states and 7443 transitions.
[2023-11-29 05:24:33,846 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2919
[2023-11-29 05:24:33,846 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:33,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:24:33,893 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 05:24:34,049 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:34,049 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:34,050 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:34,051 INFO  L85        PathProgramCache]: Analyzing trace with hash -1695106620, now seen corresponding path program 1 times
[2023-11-29 05:24:34,051 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:34,052 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419290104]
[2023-11-29 05:24:34,052 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:34,053 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:34,427 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:24:34,428 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539610483]
[2023-11-29 05:24:34,429 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:34,429 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:34,429 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:24:34,430 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:24:34,432 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 05:24:37,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:37,764 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12985 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 05:24:37,809 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:24:37,901 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:37,901 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:24:37,901 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:37,901 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419290104]
[2023-11-29 05:24:37,901 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:24:37,901 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539610483]
[2023-11-29 05:24:37,901 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539610483] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:37,902 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:37,902 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:24:37,903 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694346997]
[2023-11-29 05:24:37,903 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:37,907 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:24:37,907 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:37,910 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:24:37,910 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:37,911 INFO  L87              Difference]: Start difference. First operand 4463 states and 7443 transitions. Second operand  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:38,077 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:38,077 INFO  L93              Difference]: Finished difference Result 8602 states and 14349 transitions.
[2023-11-29 05:24:38,079 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:24:38,081 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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 2918
[2023-11-29 05:24:38,082 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:38,090 INFO  L225             Difference]: With dead ends: 8602
[2023-11-29 05:24:38,090 INFO  L226             Difference]: Without dead ends: 4472
[2023-11-29 05:24:38,096 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:38,097 INFO  L413           NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:38,097 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:24:38,105 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4472 states.
[2023-11-29 05:24:38,170 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 4464.
[2023-11-29 05:24:38,180 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4464 states, 4463 states have (on average 1.667936365673314) internal successors, (7444), 4463 states have internal predecessors, (7444), 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)
[2023-11-29 05:24:38,187 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 7444 transitions.
[2023-11-29 05:24:38,187 INFO  L78                 Accepts]: Start accepts. Automaton has 4464 states and 7444 transitions. Word has length 2918
[2023-11-29 05:24:38,188 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:38,189 INFO  L495      AbstractCegarLoop]: Abstraction has 4464 states and 7444 transitions.
[2023-11-29 05:24:38,190 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:38,190 INFO  L276                IsEmpty]: Start isEmpty. Operand 4464 states and 7444 transitions.
[2023-11-29 05:24:38,250 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2919
[2023-11-29 05:24:38,250 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:38,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:24:38,282 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 05:24:38,457 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:38,458 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:38,459 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:38,460 INFO  L85        PathProgramCache]: Analyzing trace with hash 1459449874, now seen corresponding path program 1 times
[2023-11-29 05:24:38,460 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:38,460 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998579987]
[2023-11-29 05:24:38,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:38,461 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:38,881 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:24:38,881 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269563705]
[2023-11-29 05:24:38,882 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:38,882 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:38,882 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:24:38,884 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:24:38,885 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 05:24:41,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:42,066 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12986 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 05:24:42,136 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:24:42,265 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:42,265 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:24:42,266 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:42,266 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998579987]
[2023-11-29 05:24:42,266 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:24:42,266 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269563705]
[2023-11-29 05:24:42,266 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269563705] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:42,266 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:42,267 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:24:42,267 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758358477]
[2023-11-29 05:24:42,267 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:42,272 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:24:42,273 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:42,277 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:24:42,277 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:42,278 INFO  L87              Difference]: Start difference. First operand 4464 states and 7444 transitions. Second operand  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:42,422 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:42,422 INFO  L93              Difference]: Finished difference Result 8604 states and 14351 transitions.
[2023-11-29 05:24:42,423 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:24:42,424 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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 2918
[2023-11-29 05:24:42,425 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:42,434 INFO  L225             Difference]: With dead ends: 8604
[2023-11-29 05:24:42,434 INFO  L226             Difference]: Without dead ends: 4473
[2023-11-29 05:24:42,441 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:42,442 INFO  L413           NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:42,442 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:24:42,451 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4473 states.
[2023-11-29 05:24:42,526 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4473 to 4465.
[2023-11-29 05:24:42,533 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4465 states, 4464 states have (on average 1.6677867383512546) internal successors, (7445), 4464 states have internal predecessors, (7445), 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)
[2023-11-29 05:24:42,543 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 7445 transitions.
[2023-11-29 05:24:42,543 INFO  L78                 Accepts]: Start accepts. Automaton has 4465 states and 7445 transitions. Word has length 2918
[2023-11-29 05:24:42,545 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:42,545 INFO  L495      AbstractCegarLoop]: Abstraction has 4465 states and 7445 transitions.
[2023-11-29 05:24:42,546 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:42,546 INFO  L276                IsEmpty]: Start isEmpty. Operand 4465 states and 7445 transitions.
[2023-11-29 05:24:42,668 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2919
[2023-11-29 05:24:42,668 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:42,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:24:42,699 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 05:24:42,870 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:42,870 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:42,871 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:42,872 INFO  L85        PathProgramCache]: Analyzing trace with hash -1981297788, now seen corresponding path program 1 times
[2023-11-29 05:24:42,872 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:42,872 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098330008]
[2023-11-29 05:24:42,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:42,872 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:43,228 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:24:43,228 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873498337]
[2023-11-29 05:24:43,229 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:43,229 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:43,230 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:24:43,231 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:24:43,232 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 05:24:46,165 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:46,239 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12987 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 05:24:46,289 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:24:46,382 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:46,382 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:24:46,382 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:46,383 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098330008]
[2023-11-29 05:24:46,383 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:24:46,383 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873498337]
[2023-11-29 05:24:46,383 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [873498337] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:46,383 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:46,384 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:24:46,384 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568002229]
[2023-11-29 05:24:46,384 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:46,389 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:24:46,389 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:46,392 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:24:46,392 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:46,394 INFO  L87              Difference]: Start difference. First operand 4465 states and 7445 transitions. Second operand  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:46,542 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:46,542 INFO  L93              Difference]: Finished difference Result 8606 states and 14353 transitions.
[2023-11-29 05:24:46,543 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:24:46,544 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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 2918
[2023-11-29 05:24:46,545 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:46,552 INFO  L225             Difference]: With dead ends: 8606
[2023-11-29 05:24:46,552 INFO  L226             Difference]: Without dead ends: 4474
[2023-11-29 05:24:46,557 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:46,558 INFO  L413           NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:46,558 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:24:46,565 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4474 states.
[2023-11-29 05:24:46,618 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 4466.
[2023-11-29 05:24:46,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4466 states, 4465 states have (on average 1.6676371780515118) internal successors, (7446), 4465 states have internal predecessors, (7446), 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)
[2023-11-29 05:24:46,630 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 7446 transitions.
[2023-11-29 05:24:46,630 INFO  L78                 Accepts]: Start accepts. Automaton has 4466 states and 7446 transitions. Word has length 2918
[2023-11-29 05:24:46,632 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:46,632 INFO  L495      AbstractCegarLoop]: Abstraction has 4466 states and 7446 transitions.
[2023-11-29 05:24:46,632 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:46,633 INFO  L276                IsEmpty]: Start isEmpty. Operand 4466 states and 7446 transitions.
[2023-11-29 05:24:46,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2919
[2023-11-29 05:24:46,784 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:46,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:24:46,816 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 05:24:46,987 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:46,987 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:46,988 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:46,989 INFO  L85        PathProgramCache]: Analyzing trace with hash 1819951606, now seen corresponding path program 1 times
[2023-11-29 05:24:46,989 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:46,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044312818]
[2023-11-29 05:24:46,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:46,990 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:47,217 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:24:47,217 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267821081]
[2023-11-29 05:24:47,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:47,219 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:47,219 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:24:47,220 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:24:47,221 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 05:24:49,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:50,002 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12988 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 05:24:50,038 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:24:50,115 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:50,115 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:24:50,116 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:50,116 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044312818]
[2023-11-29 05:24:50,116 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:24:50,116 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267821081]
[2023-11-29 05:24:50,116 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [267821081] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:50,116 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:50,117 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:24:50,117 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341210517]
[2023-11-29 05:24:50,117 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:50,120 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:24:50,120 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:50,123 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:24:50,124 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:50,125 INFO  L87              Difference]: Start difference. First operand 4466 states and 7446 transitions. Second operand  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:50,234 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:50,234 INFO  L93              Difference]: Finished difference Result 8608 states and 14355 transitions.
[2023-11-29 05:24:50,235 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:24:50,236 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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 2918
[2023-11-29 05:24:50,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:50,242 INFO  L225             Difference]: With dead ends: 8608
[2023-11-29 05:24:50,242 INFO  L226             Difference]: Without dead ends: 4475
[2023-11-29 05:24:50,246 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:50,247 INFO  L413           NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:50,247 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:24:50,252 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4475 states.
[2023-11-29 05:24:50,289 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4467.
[2023-11-29 05:24:50,294 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4467 states, 4466 states have (on average 1.667487684729064) internal successors, (7447), 4466 states have internal predecessors, (7447), 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)
[2023-11-29 05:24:50,299 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 7447 transitions.
[2023-11-29 05:24:50,299 INFO  L78                 Accepts]: Start accepts. Automaton has 4467 states and 7447 transitions. Word has length 2918
[2023-11-29 05:24:50,300 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:50,301 INFO  L495      AbstractCegarLoop]: Abstraction has 4467 states and 7447 transitions.
[2023-11-29 05:24:50,301 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:50,301 INFO  L276                IsEmpty]: Start isEmpty. Operand 4467 states and 7447 transitions.
[2023-11-29 05:24:50,343 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2919
[2023-11-29 05:24:50,343 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:50,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:24:50,376 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-29 05:24:50,545 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:50,546 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:50,546 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:50,547 INFO  L85        PathProgramCache]: Analyzing trace with hash -1749444120, now seen corresponding path program 1 times
[2023-11-29 05:24:50,547 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:50,547 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56864778]
[2023-11-29 05:24:50,548 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:50,548 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:50,795 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:24:50,795 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809148152]
[2023-11-29 05:24:50,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:50,796 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:50,796 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:24:50,797 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:24:50,798 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 05:24:53,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:53,934 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12989 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 05:24:53,980 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:24:54,082 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:54,082 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:24:54,083 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:54,083 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56864778]
[2023-11-29 05:24:54,083 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:24:54,083 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809148152]
[2023-11-29 05:24:54,083 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [809148152] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:54,083 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:54,084 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:24:54,084 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084560687]
[2023-11-29 05:24:54,084 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:54,088 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:24:54,088 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:54,091 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:24:54,091 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:54,092 INFO  L87              Difference]: Start difference. First operand 4467 states and 7447 transitions. Second operand  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:54,227 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:54,227 INFO  L93              Difference]: Finished difference Result 8610 states and 14357 transitions.
[2023-11-29 05:24:54,228 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:24:54,228 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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 2918
[2023-11-29 05:24:54,231 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:54,240 INFO  L225             Difference]: With dead ends: 8610
[2023-11-29 05:24:54,240 INFO  L226             Difference]: Without dead ends: 4476
[2023-11-29 05:24:54,245 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:54,246 INFO  L413           NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:54,246 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:24:54,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4476 states.
[2023-11-29 05:24:54,305 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4468.
[2023-11-29 05:24:54,311 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4468 states, 4467 states have (on average 1.66733825833893) internal successors, (7448), 4467 states have internal predecessors, (7448), 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)
[2023-11-29 05:24:54,318 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7448 transitions.
[2023-11-29 05:24:54,318 INFO  L78                 Accepts]: Start accepts. Automaton has 4468 states and 7448 transitions. Word has length 2918
[2023-11-29 05:24:54,321 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:54,321 INFO  L495      AbstractCegarLoop]: Abstraction has 4468 states and 7448 transitions.
[2023-11-29 05:24:54,322 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 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)
[2023-11-29 05:24:54,322 INFO  L276                IsEmpty]: Start isEmpty. Operand 4468 states and 7448 transitions.
[2023-11-29 05:24:54,386 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2919
[2023-11-29 05:24:54,386 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:54,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:24:54,427 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-29 05:24:54,589 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 05:24:54,590 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:54,590 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:54,591 INFO  L85        PathProgramCache]: Analyzing trace with hash -728820006, now seen corresponding path program 1 times
[2023-11-29 05:24:54,591 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:54,591 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84999980]
[2023-11-29 05:24:54,591 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:54,592 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:54,847 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:24:54,847 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105281666]
[2023-11-29 05:24:54,848 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:54,848 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:54,848 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:24:54,849 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:24:54,850 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 05:24:57,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:57,618 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12990 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:24:57,674 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:24:58,859 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:24:58,859 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:24:58,860 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:58,860 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84999980]
[2023-11-29 05:24:58,860 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:24:58,860 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105281666]
[2023-11-29 05:24:58,860 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105281666] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:58,860 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:58,861 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:24:58,861 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98581671]
[2023-11-29 05:24:58,861 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:58,865 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:24:58,865 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:58,869 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:24:58,869 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:58,870 INFO  L87              Difference]: Start difference. First operand 4468 states and 7448 transitions. Second operand  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 3 states have internal predecessors, (2918), 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)
[2023-11-29 05:25:01,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:25:01,205 INFO  L93              Difference]: Finished difference Result 8925 states and 14883 transitions.
[2023-11-29 05:25:01,205 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:25:01,206 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 3 states have internal predecessors, (2918), 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 2918
[2023-11-29 05:25:01,207 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:25:01,215 INFO  L225             Difference]: With dead ends: 8925
[2023-11-29 05:25:01,215 INFO  L226             Difference]: Without dead ends: 4790
[2023-11-29 05:25:01,220 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2918 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:25:01,221 INFO  L413           NwaCegarLoop]: 6314 mSDtfsCounter, 13637 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13637 SdHoareTripleChecker+Valid, 6925 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2023-11-29 05:25:01,221 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13637 Valid, 6925 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]
[2023-11-29 05:25:01,230 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4790 states.
[2023-11-29 05:25:01,276 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4468.
[2023-11-29 05:25:01,280 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4468 states, 4467 states have (on average 1.6671143944481754) internal successors, (7447), 4467 states have internal predecessors, (7447), 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)
[2023-11-29 05:25:01,285 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7447 transitions.
[2023-11-29 05:25:01,285 INFO  L78                 Accepts]: Start accepts. Automaton has 4468 states and 7447 transitions. Word has length 2918
[2023-11-29 05:25:01,286 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:25:01,286 INFO  L495      AbstractCegarLoop]: Abstraction has 4468 states and 7447 transitions.
[2023-11-29 05:25:01,287 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 729.5) internal successors, (2918), 3 states have internal predecessors, (2918), 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)
[2023-11-29 05:25:01,287 INFO  L276                IsEmpty]: Start isEmpty. Operand 4468 states and 7447 transitions.
[2023-11-29 05:25:01,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2920
[2023-11-29 05:25:01,327 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:25:01,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:25:01,365 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 05:25:01,529 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 05:25:01,530 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:25:01,530 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:25:01,531 INFO  L85        PathProgramCache]: Analyzing trace with hash -521145992, now seen corresponding path program 1 times
[2023-11-29 05:25:01,531 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:25:01,531 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730188821]
[2023-11-29 05:25:01,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:01,532 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:25:01,795 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:25:01,795 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90104267]
[2023-11-29 05:25:01,795 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:01,795 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:01,796 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:25:01,796 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:25:01,797 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 05:25:04,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:25:04,596 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12991 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:25:04,632 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:25:05,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:25:05,680 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:25:05,680 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:25:05,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730188821]
[2023-11-29 05:25:05,680 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:25:05,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90104267]
[2023-11-29 05:25:05,680 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [90104267] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:25:05,680 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:25:05,681 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:25:05,681 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791329994]
[2023-11-29 05:25:05,681 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:25:05,685 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:25:05,685 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:25:05,688 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:25:05,688 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:25:05,689 INFO  L87              Difference]: Start difference. First operand 4468 states and 7447 transitions. Second operand  has 4 states, 4 states have (on average 729.75) internal successors, (2919), 3 states have internal predecessors, (2919), 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)
[2023-11-29 05:25:07,929 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:25:07,929 INFO  L93              Difference]: Finished difference Result 8932 states and 14892 transitions.
[2023-11-29 05:25:07,930 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:25:07,931 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 729.75) internal successors, (2919), 3 states have internal predecessors, (2919), 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 2919
[2023-11-29 05:25:07,932 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:25:07,936 INFO  L225             Difference]: With dead ends: 8932
[2023-11-29 05:25:07,937 INFO  L226             Difference]: Without dead ends: 4797
[2023-11-29 05:25:07,940 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2919 GetRequests, 2916 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:25:07,941 INFO  L413           NwaCegarLoop]: 6323 mSDtfsCounter, 13630 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13630 SdHoareTripleChecker+Valid, 6944 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:25:07,941 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13630 Valid, 6944 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2023-11-29 05:25:07,946 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4797 states.
[2023-11-29 05:25:07,991 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4468.
[2023-11-29 05:25:07,997 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4468 states, 4467 states have (on average 1.666890530557421) internal successors, (7446), 4467 states have internal predecessors, (7446), 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)
[2023-11-29 05:25:08,004 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7446 transitions.
[2023-11-29 05:25:08,004 INFO  L78                 Accepts]: Start accepts. Automaton has 4468 states and 7446 transitions. Word has length 2919
[2023-11-29 05:25:08,005 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:25:08,005 INFO  L495      AbstractCegarLoop]: Abstraction has 4468 states and 7446 transitions.
[2023-11-29 05:25:08,006 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 729.75) internal successors, (2919), 3 states have internal predecessors, (2919), 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)
[2023-11-29 05:25:08,006 INFO  L276                IsEmpty]: Start isEmpty. Operand 4468 states and 7446 transitions.
[2023-11-29 05:25:08,064 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2921
[2023-11-29 05:25:08,064 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:25:08,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:25:08,096 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 05:25:08,267 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:08,267 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:25:08,267 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:25:08,268 INFO  L85        PathProgramCache]: Analyzing trace with hash -1878756501, now seen corresponding path program 1 times
[2023-11-29 05:25:08,268 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:25:08,268 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601796596]
[2023-11-29 05:25:08,269 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:08,269 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:25:08,527 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:25:08,527 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453366924]
[2023-11-29 05:25:08,528 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:08,528 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:08,528 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:25:08,529 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:25:08,542 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 05:25:11,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:25:11,455 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12992 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:25:11,490 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:25:12,489 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:25:12,489 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:25:12,490 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:25:12,490 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601796596]
[2023-11-29 05:25:12,490 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:25:12,490 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453366924]
[2023-11-29 05:25:12,490 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [453366924] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:25:12,490 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:25:12,491 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:25:12,491 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738781719]
[2023-11-29 05:25:12,491 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:25:12,494 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:25:12,494 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:25:12,497 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:25:12,497 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:25:12,498 INFO  L87              Difference]: Start difference. First operand 4468 states and 7446 transitions. Second operand  has 4 states, 4 states have (on average 730.0) internal successors, (2920), 3 states have internal predecessors, (2920), 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)
[2023-11-29 05:25:14,608 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:25:14,608 INFO  L93              Difference]: Finished difference Result 8936 states and 14896 transitions.
[2023-11-29 05:25:14,608 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:25:14,609 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 730.0) internal successors, (2920), 3 states have internal predecessors, (2920), 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 2920
[2023-11-29 05:25:14,609 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:25:14,613 INFO  L225             Difference]: With dead ends: 8936
[2023-11-29 05:25:14,613 INFO  L226             Difference]: Without dead ends: 4801
[2023-11-29 05:25:14,617 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2920 GetRequests, 2917 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:25:14,617 INFO  L413           NwaCegarLoop]: 6327 mSDtfsCounter, 13625 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13625 SdHoareTripleChecker+Valid, 6953 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:25:14,618 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13625 Valid, 6953 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2023-11-29 05:25:14,624 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4801 states.
[2023-11-29 05:25:14,677 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4468.
[2023-11-29 05:25:14,682 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4468 states, 4467 states have (on average 1.6666666666666667) internal successors, (7445), 4467 states have internal predecessors, (7445), 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)
[2023-11-29 05:25:14,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7445 transitions.
[2023-11-29 05:25:14,689 INFO  L78                 Accepts]: Start accepts. Automaton has 4468 states and 7445 transitions. Word has length 2920
[2023-11-29 05:25:14,690 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:25:14,690 INFO  L495      AbstractCegarLoop]: Abstraction has 4468 states and 7445 transitions.
[2023-11-29 05:25:14,691 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 730.0) internal successors, (2920), 3 states have internal predecessors, (2920), 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)
[2023-11-29 05:25:14,691 INFO  L276                IsEmpty]: Start isEmpty. Operand 4468 states and 7445 transitions.
[2023-11-29 05:25:14,755 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2922
[2023-11-29 05:25:14,755 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:25:14,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:25:14,787 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 05:25:14,958 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 05:25:14,958 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:25:14,958 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:25:14,959 INFO  L85        PathProgramCache]: Analyzing trace with hash 599348547, now seen corresponding path program 1 times
[2023-11-29 05:25:14,959 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:25:14,959 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206612102]
[2023-11-29 05:25:14,960 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:14,960 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:25:15,184 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:25:15,184 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946539258]
[2023-11-29 05:25:15,185 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:15,185 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:15,185 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:25:15,186 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:25:15,187 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 05:25:18,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:25:18,106 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12993 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:25:18,142 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:25:19,337 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:25:19,337 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:25:19,338 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:25:19,338 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206612102]
[2023-11-29 05:25:19,338 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:25:19,338 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946539258]
[2023-11-29 05:25:19,338 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946539258] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:25:19,338 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:25:19,339 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:25:19,339 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621014324]
[2023-11-29 05:25:19,339 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:25:19,342 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:25:19,342 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:25:19,345 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:25:19,346 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:25:19,347 INFO  L87              Difference]: Start difference. First operand 4468 states and 7445 transitions. Second operand  has 4 states, 4 states have (on average 730.25) internal successors, (2921), 3 states have internal predecessors, (2921), 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)
[2023-11-29 05:25:21,548 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:25:21,548 INFO  L93              Difference]: Finished difference Result 8943 states and 14905 transitions.
[2023-11-29 05:25:21,549 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:25:21,549 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 730.25) internal successors, (2921), 3 states have internal predecessors, (2921), 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 2921
[2023-11-29 05:25:21,550 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:25:21,553 INFO  L225             Difference]: With dead ends: 8943
[2023-11-29 05:25:21,553 INFO  L226             Difference]: Without dead ends: 4808
[2023-11-29 05:25:21,556 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2921 GetRequests, 2918 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:25:21,557 INFO  L413           NwaCegarLoop]: 6336 mSDtfsCounter, 13618 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13618 SdHoareTripleChecker+Valid, 6972 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:25:21,557 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13618 Valid, 6972 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2023-11-29 05:25:21,562 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4808 states.
[2023-11-29 05:25:21,600 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4468.
[2023-11-29 05:25:21,604 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4468 states, 4467 states have (on average 1.6664428027759122) internal successors, (7444), 4467 states have internal predecessors, (7444), 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)
[2023-11-29 05:25:21,609 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7444 transitions.
[2023-11-29 05:25:21,609 INFO  L78                 Accepts]: Start accepts. Automaton has 4468 states and 7444 transitions. Word has length 2921
[2023-11-29 05:25:21,610 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:25:21,610 INFO  L495      AbstractCegarLoop]: Abstraction has 4468 states and 7444 transitions.
[2023-11-29 05:25:21,611 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 730.25) internal successors, (2921), 3 states have internal predecessors, (2921), 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)
[2023-11-29 05:25:21,611 INFO  L276                IsEmpty]: Start isEmpty. Operand 4468 states and 7444 transitions.
[2023-11-29 05:25:21,651 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2923
[2023-11-29 05:25:21,651 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:25:21,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:25:21,684 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 05:25:21,853 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 05:25:21,854 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:25:21,854 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:25:21,856 INFO  L85        PathProgramCache]: Analyzing trace with hash -1591613444, now seen corresponding path program 1 times
[2023-11-29 05:25:21,856 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:25:21,856 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136728640]
[2023-11-29 05:25:21,856 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:21,856 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:25:22,118 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:25:22,118 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238472532]
[2023-11-29 05:25:22,119 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:22,119 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:22,119 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:25:22,120 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:25:22,121 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 05:25:24,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:25:24,857 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12994 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:25:24,892 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:25:25,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:25:25,887 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:25:25,887 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:25:25,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136728640]
[2023-11-29 05:25:25,887 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:25:25,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238472532]
[2023-11-29 05:25:25,887 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [238472532] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:25:25,887 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:25:25,888 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:25:25,888 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594076099]
[2023-11-29 05:25:25,888 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:25:25,891 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:25:25,891 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:25:25,893 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:25:25,893 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:25:25,894 INFO  L87              Difference]: Start difference. First operand 4468 states and 7444 transitions. Second operand  has 4 states, 4 states have (on average 730.5) internal successors, (2922), 3 states have internal predecessors, (2922), 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)
[2023-11-29 05:25:27,999 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:25:28,000 INFO  L93              Difference]: Finished difference Result 8947 states and 14909 transitions.
[2023-11-29 05:25:28,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:25:28,001 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 730.5) internal successors, (2922), 3 states have internal predecessors, (2922), 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 2922
[2023-11-29 05:25:28,001 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:25:28,006 INFO  L225             Difference]: With dead ends: 8947
[2023-11-29 05:25:28,006 INFO  L226             Difference]: Without dead ends: 4812
[2023-11-29 05:25:28,011 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2922 GetRequests, 2919 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:25:28,012 INFO  L413           NwaCegarLoop]: 6340 mSDtfsCounter, 13613 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13613 SdHoareTripleChecker+Valid, 6981 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:25:28,012 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13613 Valid, 6981 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2023-11-29 05:25:28,018 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4812 states.
[2023-11-29 05:25:28,062 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4812 to 4468.
[2023-11-29 05:25:28,066 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4468 states, 4467 states have (on average 1.6662189388851578) internal successors, (7443), 4467 states have internal predecessors, (7443), 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)
[2023-11-29 05:25:28,073 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7443 transitions.
[2023-11-29 05:25:28,073 INFO  L78                 Accepts]: Start accepts. Automaton has 4468 states and 7443 transitions. Word has length 2922
[2023-11-29 05:25:28,074 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:25:28,074 INFO  L495      AbstractCegarLoop]: Abstraction has 4468 states and 7443 transitions.
[2023-11-29 05:25:28,075 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 730.5) internal successors, (2922), 3 states have internal predecessors, (2922), 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)
[2023-11-29 05:25:28,075 INFO  L276                IsEmpty]: Start isEmpty. Operand 4468 states and 7443 transitions.
[2023-11-29 05:25:28,115 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2924
[2023-11-29 05:25:28,115 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:25:28,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:25:28,148 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-11-29 05:25:28,317 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 05:25:28,318 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:25:28,318 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:25:28,319 INFO  L85        PathProgramCache]: Analyzing trace with hash 108789262, now seen corresponding path program 1 times
[2023-11-29 05:25:28,319 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:25:28,319 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682767029]
[2023-11-29 05:25:28,319 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:28,319 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:25:28,521 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:25:28,521 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803085250]
[2023-11-29 05:25:28,521 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:28,522 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:28,522 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:25:28,522 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:25:28,523 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 05:25:31,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:25:31,301 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12995 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:25:31,338 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:25:32,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:25:32,508 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:25:32,508 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:25:32,508 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682767029]
[2023-11-29 05:25:32,508 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:25:32,508 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803085250]
[2023-11-29 05:25:32,508 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [803085250] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:25:32,508 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:25:32,509 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:25:32,509 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179580256]
[2023-11-29 05:25:32,509 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:25:32,512 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:25:32,512 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:25:32,515 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:25:32,515 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:25:32,516 INFO  L87              Difference]: Start difference. First operand 4468 states and 7443 transitions. Second operand  has 4 states, 4 states have (on average 730.75) internal successors, (2923), 3 states have internal predecessors, (2923), 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)
[2023-11-29 05:25:34,611 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:25:34,611 INFO  L93              Difference]: Finished difference Result 8954 states and 14918 transitions.
[2023-11-29 05:25:34,612 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:25:34,613 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 730.75) internal successors, (2923), 3 states have internal predecessors, (2923), 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 2923
[2023-11-29 05:25:34,613 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:25:34,616 INFO  L225             Difference]: With dead ends: 8954
[2023-11-29 05:25:34,617 INFO  L226             Difference]: Without dead ends: 4819
[2023-11-29 05:25:34,620 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2923 GetRequests, 2920 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:25:34,620 INFO  L413           NwaCegarLoop]: 6349 mSDtfsCounter, 13606 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13606 SdHoareTripleChecker+Valid, 7000 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:25:34,621 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13606 Valid, 7000 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2137 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2023-11-29 05:25:34,625 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4819 states.
[2023-11-29 05:25:34,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 4468.
[2023-11-29 05:25:34,656 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4468 states, 4467 states have (on average 1.6659950749944035) internal successors, (7442), 4467 states have internal predecessors, (7442), 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)
[2023-11-29 05:25:34,660 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7442 transitions.
[2023-11-29 05:25:34,660 INFO  L78                 Accepts]: Start accepts. Automaton has 4468 states and 7442 transitions. Word has length 2923
[2023-11-29 05:25:34,661 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:25:34,661 INFO  L495      AbstractCegarLoop]: Abstraction has 4468 states and 7442 transitions.
[2023-11-29 05:25:34,662 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 730.75) internal successors, (2923), 3 states have internal predecessors, (2923), 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)
[2023-11-29 05:25:34,662 INFO  L276                IsEmpty]: Start isEmpty. Operand 4468 states and 7442 transitions.
[2023-11-29 05:25:34,701 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2925
[2023-11-29 05:25:34,701 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:25:34,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:25:34,732 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 05:25:34,903 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 05:25:34,904 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:25:34,904 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:25:34,905 INFO  L85        PathProgramCache]: Analyzing trace with hash -932141939, now seen corresponding path program 1 times
[2023-11-29 05:25:34,905 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:25:34,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391033950]
[2023-11-29 05:25:34,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:34,905 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:25:35,105 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:25:35,106 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579232889]
[2023-11-29 05:25:35,106 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:35,106 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:35,106 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:25:35,107 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:25:35,108 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 05:25:37,955 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:25:38,032 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12996 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-29 05:25:38,080 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:25:51,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:25:51,799 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:25:51,800 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:25:51,800 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391033950]
[2023-11-29 05:25:51,800 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:25:51,800 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579232889]
[2023-11-29 05:25:51,800 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579232889] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:25:51,800 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:25:51,801 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 05:25:51,801 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650568571]
[2023-11-29 05:25:51,801 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:25:51,804 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:25:51,804 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:25:51,808 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:25:51,808 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:25:51,809 INFO  L87              Difference]: Start difference. First operand 4468 states and 7442 transitions. Second operand  has 5 states, 5 states have (on average 584.8) internal successors, (2924), 5 states have internal predecessors, (2924), 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)
[2023-11-29 05:25:55,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:25:55,469 INFO  L93              Difference]: Finished difference Result 12573 states and 20949 transitions.
[2023-11-29 05:25:55,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:25:55,470 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 584.8) internal successors, (2924), 5 states have internal predecessors, (2924), 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 2924
[2023-11-29 05:25:55,473 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:25:55,479 INFO  L225             Difference]: With dead ends: 12573
[2023-11-29 05:25:55,479 INFO  L226             Difference]: Without dead ends: 8438
[2023-11-29 05:25:55,483 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2925 GetRequests, 2920 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:25:55,483 INFO  L413           NwaCegarLoop]: 6219 mSDtfsCounter, 4035 mSDsluCounter, 17849 mSDsCounter, 0 mSdLazyCounter, 4572 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4035 SdHoareTripleChecker+Valid, 24068 SdHoareTripleChecker+Invalid, 4572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2023-11-29 05:25:55,484 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4035 Valid, 24068 Invalid, 4572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 4572 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2023-11-29 05:25:55,490 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8438 states.
[2023-11-29 05:25:55,573 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 8428.
[2023-11-29 05:25:55,580 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8428 states, 8427 states have (on average 1.6664293342826628) internal successors, (14043), 8427 states have internal predecessors, (14043), 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)
[2023-11-29 05:25:55,588 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 14043 transitions.
[2023-11-29 05:25:55,589 INFO  L78                 Accepts]: Start accepts. Automaton has 8428 states and 14043 transitions. Word has length 2924
[2023-11-29 05:25:55,590 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:25:55,590 INFO  L495      AbstractCegarLoop]: Abstraction has 8428 states and 14043 transitions.
[2023-11-29 05:25:55,591 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 584.8) internal successors, (2924), 5 states have internal predecessors, (2924), 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)
[2023-11-29 05:25:55,591 INFO  L276                IsEmpty]: Start isEmpty. Operand 8428 states and 14043 transitions.
[2023-11-29 05:25:55,630 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2926
[2023-11-29 05:25:55,630 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:25:55,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:25:55,661 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 05:25:55,832 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 05:25:55,833 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:25:55,833 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:25:55,834 INFO  L85        PathProgramCache]: Analyzing trace with hash -604813563, now seen corresponding path program 1 times
[2023-11-29 05:25:55,834 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:25:55,834 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717443001]
[2023-11-29 05:25:55,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:55,835 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:25:56,059 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:25:56,059 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514721338]
[2023-11-29 05:25:56,060 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:56,060 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:56,060 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:25:56,061 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:25:56,062 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 05:25:58,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:25:58,753 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12999 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:25:58,794 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:25:59,007 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked.
[2023-11-29 05:25:59,007 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:25:59,093 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked.
[2023-11-29 05:25:59,093 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:25:59,093 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717443001]
[2023-11-29 05:25:59,093 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:25:59,093 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514721338]
[2023-11-29 05:25:59,093 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514721338] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:25:59,093 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:25:59,095 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2023-11-29 05:25:59,095 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757410383]
[2023-11-29 05:25:59,095 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:25:59,098 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:25:59,098 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:25:59,100 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:25:59,101 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2023-11-29 05:25:59,101 INFO  L87              Difference]: Start difference. First operand 8428 states and 14043 transitions. Second operand  has 5 states, 5 states have (on average 563.2) internal successors, (2816), 5 states have internal predecessors, (2816), 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)
[2023-11-29 05:25:59,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:25:59,442 INFO  L93              Difference]: Finished difference Result 20816 states and 34688 transitions.
[2023-11-29 05:25:59,443 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:25:59,443 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 563.2) internal successors, (2816), 5 states have internal predecessors, (2816), 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 2925
[2023-11-29 05:25:59,446 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:25:59,455 INFO  L225             Difference]: With dead ends: 20816
[2023-11-29 05:25:59,455 INFO  L226             Difference]: Without dead ends: 12721
[2023-11-29 05:25:59,461 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5848 GetRequests, 5838 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2023-11-29 05:25:59,462 INFO  L413           NwaCegarLoop]: 20890 mSDtfsCounter, 13735 mSDsluCounter, 48908 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13735 SdHoareTripleChecker+Valid, 69798 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:25:59,462 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13735 Valid, 69798 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:25:59,471 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12721 states.
[2023-11-29 05:25:59,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12721 to 8422.
[2023-11-29 05:25:59,566 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8422 states, 8421 states have (on average 1.6663104144400902) internal successors, (14032), 8421 states have internal predecessors, (14032), 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)
[2023-11-29 05:25:59,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 14032 transitions.
[2023-11-29 05:25:59,575 INFO  L78                 Accepts]: Start accepts. Automaton has 8422 states and 14032 transitions. Word has length 2925
[2023-11-29 05:25:59,577 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:25:59,577 INFO  L495      AbstractCegarLoop]: Abstraction has 8422 states and 14032 transitions.
[2023-11-29 05:25:59,577 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 563.2) internal successors, (2816), 5 states have internal predecessors, (2816), 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)
[2023-11-29 05:25:59,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 8422 states and 14032 transitions.
[2023-11-29 05:25:59,653 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2927
[2023-11-29 05:25:59,653 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:25:59,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:25:59,686 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 05:25:59,855 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 05:25:59,855 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:25:59,858 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:25:59,858 INFO  L85        PathProgramCache]: Analyzing trace with hash -362470163, now seen corresponding path program 1 times
[2023-11-29 05:25:59,859 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:25:59,859 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722393133]
[2023-11-29 05:25:59,859 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:59,859 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:26:00,074 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:26:00,074 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782857790]
[2023-11-29 05:26:00,075 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:00,075 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:00,075 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:26:00,076 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:26:00,077 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 05:26:03,245 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:26:03,324 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13003 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:26:03,363 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:26:07,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:26:07,511 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:26:07,511 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:26:07,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722393133]
[2023-11-29 05:26:07,511 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:26:07,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782857790]
[2023-11-29 05:26:07,511 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [782857790] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:26:07,511 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:26:07,512 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 05:26:07,512 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389728041]
[2023-11-29 05:26:07,513 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:26:07,516 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:26:07,516 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:26:07,519 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:26:07,519 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:26:07,520 INFO  L87              Difference]: Start difference. First operand 8422 states and 14032 transitions. Second operand  has 6 states, 6 states have (on average 487.6666666666667) internal successors, (2926), 5 states have internal predecessors, (2926), 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)
[2023-11-29 05:26:09,629 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:26:09,629 INFO  L93              Difference]: Finished difference Result 20579 states and 34275 transitions.
[2023-11-29 05:26:09,629 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:26:09,630 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 487.6666666666667) internal successors, (2926), 5 states have internal predecessors, (2926), 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 2926
[2023-11-29 05:26:09,631 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:26:09,641 INFO  L225             Difference]: With dead ends: 20579
[2023-11-29 05:26:09,641 INFO  L226             Difference]: Without dead ends: 12490
[2023-11-29 05:26:09,646 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2928 GetRequests, 2921 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2023-11-29 05:26:09,647 INFO  L413           NwaCegarLoop]: 6156 mSDtfsCounter, 26102 mSDsluCounter, 13061 mSDsCounter, 0 mSdLazyCounter, 2682 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26102 SdHoareTripleChecker+Valid, 19217 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2023-11-29 05:26:09,647 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [26102 Valid, 19217 Invalid, 2736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 2682 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2023-11-29 05:26:09,657 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12490 states.
[2023-11-29 05:26:09,728 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12490 to 9498.
[2023-11-29 05:26:09,735 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9498 states, 9497 states have (on average 1.6659997894071812) internal successors, (15822), 9497 states have internal predecessors, (15822), 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)
[2023-11-29 05:26:09,744 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9498 states to 9498 states and 15822 transitions.
[2023-11-29 05:26:09,745 INFO  L78                 Accepts]: Start accepts. Automaton has 9498 states and 15822 transitions. Word has length 2926
[2023-11-29 05:26:09,746 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:26:09,746 INFO  L495      AbstractCegarLoop]: Abstraction has 9498 states and 15822 transitions.
[2023-11-29 05:26:09,746 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 487.6666666666667) internal successors, (2926), 5 states have internal predecessors, (2926), 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)
[2023-11-29 05:26:09,746 INFO  L276                IsEmpty]: Start isEmpty. Operand 9498 states and 15822 transitions.
[2023-11-29 05:26:09,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2928
[2023-11-29 05:26:09,784 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:26:09,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:26:09,833 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 05:26:09,986 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:09,987 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:26:09,987 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:26:09,988 INFO  L85        PathProgramCache]: Analyzing trace with hash 1614877913, now seen corresponding path program 1 times
[2023-11-29 05:26:09,988 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:26:09,988 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167428729]
[2023-11-29 05:26:09,989 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:09,989 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:26:10,195 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:26:10,195 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710582689]
[2023-11-29 05:26:10,196 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:10,196 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:10,196 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:26:10,197 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:26:10,198 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 05:26:13,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:26:13,073 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13006 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-29 05:26:13,107 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:26:14,064 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:26:14,064 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:26:14,064 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:26:14,065 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167428729]
[2023-11-29 05:26:14,065 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:26:14,065 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710582689]
[2023-11-29 05:26:14,065 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [710582689] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:26:14,065 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:26:14,066 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 05:26:14,066 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828394498]
[2023-11-29 05:26:14,066 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:26:14,068 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:26:14,068 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:26:14,071 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:26:14,071 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:26:14,071 INFO  L87              Difference]: Start difference. First operand 9498 states and 15822 transitions. Second operand  has 6 states, 6 states have (on average 487.8333333333333) internal successors, (2927), 6 states have internal predecessors, (2927), 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)
[2023-11-29 05:26:18,447 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:26:18,447 INFO  L93              Difference]: Finished difference Result 25502 states and 42500 transitions.
[2023-11-29 05:26:18,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:26:18,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 487.8333333333333) internal successors, (2927), 6 states have internal predecessors, (2927), 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 2927
[2023-11-29 05:26:18,449 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:26:18,459 INFO  L225             Difference]: With dead ends: 25502
[2023-11-29 05:26:18,459 INFO  L226             Difference]: Without dead ends: 16694
[2023-11-29 05:26:18,466 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2929 GetRequests, 2922 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-11-29 05:26:18,466 INFO  L413           NwaCegarLoop]: 10102 mSDtfsCounter, 13666 mSDsluCounter, 25996 mSDsCounter, 0 mSdLazyCounter, 6939 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13666 SdHoareTripleChecker+Valid, 36098 SdHoareTripleChecker+Invalid, 6940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:26:18,467 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13666 Valid, 36098 Invalid, 6940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 6939 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2023-11-29 05:26:18,480 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16694 states.
[2023-11-29 05:26:18,588 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 10936.
[2023-11-29 05:26:18,595 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10936 states, 10935 states have (on average 1.6657521719250115) internal successors, (18215), 10935 states have internal predecessors, (18215), 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)
[2023-11-29 05:26:18,606 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10936 states to 10936 states and 18215 transitions.
[2023-11-29 05:26:18,606 INFO  L78                 Accepts]: Start accepts. Automaton has 10936 states and 18215 transitions. Word has length 2927
[2023-11-29 05:26:18,607 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:26:18,607 INFO  L495      AbstractCegarLoop]: Abstraction has 10936 states and 18215 transitions.
[2023-11-29 05:26:18,608 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 487.8333333333333) internal successors, (2927), 6 states have internal predecessors, (2927), 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)
[2023-11-29 05:26:18,608 INFO  L276                IsEmpty]: Start isEmpty. Operand 10936 states and 18215 transitions.
[2023-11-29 05:26:18,648 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2929
[2023-11-29 05:26:18,648 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:26:18,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:26:18,679 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 05:26:18,850 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:18,851 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:26:18,851 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:26:18,853 INFO  L85        PathProgramCache]: Analyzing trace with hash 475163149, now seen corresponding path program 1 times
[2023-11-29 05:26:18,853 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:26:18,853 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512672448]
[2023-11-29 05:26:18,853 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:18,854 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:26:19,101 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:26:19,102 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366666867]
[2023-11-29 05:26:19,102 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:19,103 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:19,103 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:26:19,103 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:26:19,104 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 05:26:21,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:26:21,906 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13009 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 05:26:21,955 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:26:22,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:26:22,821 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:26:22,822 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:26:22,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512672448]
[2023-11-29 05:26:22,822 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:26:22,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366666867]
[2023-11-29 05:26:22,822 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366666867] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:26:22,822 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:26:22,822 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 05:26:22,823 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061561659]
[2023-11-29 05:26:22,823 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:26:22,825 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:26:22,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:26:22,828 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:26:22,829 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:26:22,830 INFO  L87              Difference]: Start difference. First operand 10936 states and 18215 transitions. Second operand  has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 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)
[2023-11-29 05:26:26,693 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:26:26,693 INFO  L93              Difference]: Finished difference Result 26221 states and 43694 transitions.
[2023-11-29 05:26:26,694 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:26:26,694 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 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 2928
[2023-11-29 05:26:26,695 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:26:26,706 INFO  L225             Difference]: With dead ends: 26221
[2023-11-29 05:26:26,706 INFO  L226             Difference]: Without dead ends: 16694
[2023-11-29 05:26:26,713 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2929 GetRequests, 2923 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:26:26,713 INFO  L413           NwaCegarLoop]: 5820 mSDtfsCounter, 16064 mSDsluCounter, 17440 mSDsCounter, 0 mSdLazyCounter, 5359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16064 SdHoareTripleChecker+Valid, 23260 SdHoareTripleChecker+Invalid, 5360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:26:26,714 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16064 Valid, 23260 Invalid, 5360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5359 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-11-29 05:26:26,725 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16694 states.
[2023-11-29 05:26:26,822 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 10958.
[2023-11-29 05:26:26,832 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10958 states, 10957 states have (on average 1.665510632472392) internal successors, (18249), 10957 states have internal predecessors, (18249), 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)
[2023-11-29 05:26:26,848 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10958 states to 10958 states and 18249 transitions.
[2023-11-29 05:26:26,848 INFO  L78                 Accepts]: Start accepts. Automaton has 10958 states and 18249 transitions. Word has length 2928
[2023-11-29 05:26:26,849 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:26:26,849 INFO  L495      AbstractCegarLoop]: Abstraction has 10958 states and 18249 transitions.
[2023-11-29 05:26:26,849 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 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)
[2023-11-29 05:26:26,849 INFO  L276                IsEmpty]: Start isEmpty. Operand 10958 states and 18249 transitions.
[2023-11-29 05:26:26,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2930
[2023-11-29 05:26:26,930 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:26:26,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:26:26,962 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 05:26:27,131 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:27,131 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:26:27,133 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:26:27,134 INFO  L85        PathProgramCache]: Analyzing trace with hash -659338671, now seen corresponding path program 1 times
[2023-11-29 05:26:27,134 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:26:27,134 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654024716]
[2023-11-29 05:26:27,134 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:27,135 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:26:27,339 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:26:27,339 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362843450]
[2023-11-29 05:26:27,339 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:27,339 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:27,340 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:26:27,340 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:26:27,341 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 05:26:30,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:26:30,202 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13012 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 05:26:30,245 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:26:38,096 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:26:38,096 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:26:38,096 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:26:38,096 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654024716]
[2023-11-29 05:26:38,096 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:26:38,096 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362843450]
[2023-11-29 05:26:38,096 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [362843450] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:26:38,096 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:26:38,097 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 05:26:38,097 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099894285]
[2023-11-29 05:26:38,097 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:26:38,099 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:26:38,099 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:26:38,101 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:26:38,101 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:26:38,102 INFO  L87              Difference]: Start difference. First operand 10958 states and 18249 transitions. Second operand  has 6 states, 6 states have (on average 488.1666666666667) internal successors, (2929), 6 states have internal predecessors, (2929), 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)
[2023-11-29 05:26:41,889 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:26:41,890 INFO  L93              Difference]: Finished difference Result 26243 states and 43726 transitions.
[2023-11-29 05:26:41,890 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:26:41,891 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 488.1666666666667) internal successors, (2929), 6 states have internal predecessors, (2929), 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 2929
[2023-11-29 05:26:41,892 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:26:41,903 INFO  L225             Difference]: With dead ends: 26243
[2023-11-29 05:26:41,903 INFO  L226             Difference]: Without dead ends: 16694
[2023-11-29 05:26:41,910 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2930 GetRequests, 2924 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:26:41,911 INFO  L413           NwaCegarLoop]: 5820 mSDtfsCounter, 9890 mSDsluCounter, 17440 mSDsCounter, 0 mSdLazyCounter, 5359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9890 SdHoareTripleChecker+Valid, 23260 SdHoareTripleChecker+Invalid, 5360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2023-11-29 05:26:41,911 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9890 Valid, 23260 Invalid, 5360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5359 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2023-11-29 05:26:41,926 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16694 states.
[2023-11-29 05:26:42,102 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 15174.
[2023-11-29 05:26:42,113 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15174 states, 15173 states have (on average 1.666315165095894) internal successors, (25283), 15173 states have internal predecessors, (25283), 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)
[2023-11-29 05:26:42,128 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15174 states to 15174 states and 25283 transitions.
[2023-11-29 05:26:42,129 INFO  L78                 Accepts]: Start accepts. Automaton has 15174 states and 25283 transitions. Word has length 2929
[2023-11-29 05:26:42,130 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:26:42,130 INFO  L495      AbstractCegarLoop]: Abstraction has 15174 states and 25283 transitions.
[2023-11-29 05:26:42,130 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 488.1666666666667) internal successors, (2929), 6 states have internal predecessors, (2929), 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)
[2023-11-29 05:26:42,131 INFO  L276                IsEmpty]: Start isEmpty. Operand 15174 states and 25283 transitions.
[2023-11-29 05:26:42,168 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2931
[2023-11-29 05:26:42,168 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:26:42,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:26:42,199 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 05:26:42,370 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:42,370 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:26:42,370 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:26:42,372 INFO  L85        PathProgramCache]: Analyzing trace with hash 377101081, now seen corresponding path program 1 times
[2023-11-29 05:26:42,372 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:26:42,372 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084192354]
[2023-11-29 05:26:42,372 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:42,373 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:26:42,583 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:26:42,584 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781832567]
[2023-11-29 05:26:42,584 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:42,584 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:42,585 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:26:42,585 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:26:42,586 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 05:26:45,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:26:45,372 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13015 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 05:26:45,409 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:26:52,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:26:52,993 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:26:52,994 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:26:52,994 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084192354]
[2023-11-29 05:26:52,994 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:26:52,994 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781832567]
[2023-11-29 05:26:52,994 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [781832567] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:26:52,994 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:26:52,994 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 05:26:52,995 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744514223]
[2023-11-29 05:26:52,995 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:26:52,997 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:26:52,997 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:26:52,999 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:26:52,999 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:26:52,999 INFO  L87              Difference]: Start difference. First operand 15174 states and 25283 transitions. Second operand  has 6 states, 6 states have (on average 488.3333333333333) internal successors, (2930), 6 states have internal predecessors, (2930), 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)
[2023-11-29 05:26:56,801 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:26:56,801 INFO  L93              Difference]: Finished difference Result 30459 states and 50758 transitions.
[2023-11-29 05:26:56,801 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:26:56,802 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 488.3333333333333) internal successors, (2930), 6 states have internal predecessors, (2930), 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 2930
[2023-11-29 05:26:56,803 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:26:56,812 INFO  L225             Difference]: With dead ends: 30459
[2023-11-29 05:26:56,812 INFO  L226             Difference]: Without dead ends: 16694
[2023-11-29 05:26:56,816 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2931 GetRequests, 2925 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:26:56,817 INFO  L413           NwaCegarLoop]: 5820 mSDtfsCounter, 9883 mSDsluCounter, 17440 mSDsCounter, 0 mSdLazyCounter, 5359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9883 SdHoareTripleChecker+Valid, 23260 SdHoareTripleChecker+Invalid, 5360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2023-11-29 05:26:56,817 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9883 Valid, 23260 Invalid, 5360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5359 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2023-11-29 05:26:56,827 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16694 states.
[2023-11-29 05:26:56,931 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 15186.
[2023-11-29 05:26:56,942 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15186 states, 15185 states have (on average 1.666183733947975) internal successors, (25301), 15185 states have internal predecessors, (25301), 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)
[2023-11-29 05:26:56,958 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15186 states to 15186 states and 25301 transitions.
[2023-11-29 05:26:56,958 INFO  L78                 Accepts]: Start accepts. Automaton has 15186 states and 25301 transitions. Word has length 2930
[2023-11-29 05:26:56,959 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:26:56,959 INFO  L495      AbstractCegarLoop]: Abstraction has 15186 states and 25301 transitions.
[2023-11-29 05:26:56,960 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 488.3333333333333) internal successors, (2930), 6 states have internal predecessors, (2930), 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)
[2023-11-29 05:26:56,960 INFO  L276                IsEmpty]: Start isEmpty. Operand 15186 states and 25301 transitions.
[2023-11-29 05:26:56,998 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2932
[2023-11-29 05:26:56,998 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:26:56,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:26:57,029 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 05:26:57,199 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:57,200 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:26:57,200 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:26:57,202 INFO  L85        PathProgramCache]: Analyzing trace with hash -1482379233, now seen corresponding path program 1 times
[2023-11-29 05:26:57,202 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:26:57,202 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982464465]
[2023-11-29 05:26:57,202 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:57,203 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:26:57,406 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:26:57,406 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613881296]
[2023-11-29 05:26:57,407 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:57,407 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:57,407 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:26:57,408 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:26:57,409 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 05:27:00,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:27:00,359 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13019 conjuncts, 29 conjunts are in the unsatisfiable core
[2023-11-29 05:27:00,398 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:27:05,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:27:05,234 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:27:05,234 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:27:05,234 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982464465]
[2023-11-29 05:27:05,234 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:27:05,235 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613881296]
[2023-11-29 05:27:05,235 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [613881296] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:27:05,235 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:27:05,236 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:27:05,236 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838039797]
[2023-11-29 05:27:05,236 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:27:05,238 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-29 05:27:05,238 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:27:05,240 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-29 05:27:05,240 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2023-11-29 05:27:05,241 INFO  L87              Difference]: Start difference. First operand 15186 states and 25301 transitions. Second operand  has 9 states, 9 states have (on average 325.6666666666667) internal successors, (2931), 8 states have internal predecessors, (2931), 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)
[2023-11-29 05:27:09,322 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:27:09,322 INFO  L93              Difference]: Finished difference Result 31955 states and 53230 transitions.
[2023-11-29 05:27:09,322 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:27:09,323 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 325.6666666666667) internal successors, (2931), 8 states have internal predecessors, (2931), 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 2931
[2023-11-29 05:27:09,324 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:27:09,333 INFO  L225             Difference]: With dead ends: 31955
[2023-11-29 05:27:09,333 INFO  L226             Difference]: Without dead ends: 18178
[2023-11-29 05:27:09,338 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2934 GetRequests, 2923 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:27:09,339 INFO  L413           NwaCegarLoop]: 6156 mSDtfsCounter, 32842 mSDsluCounter, 24563 mSDsCounter, 0 mSdLazyCounter, 5246 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32842 SdHoareTripleChecker+Valid, 30719 SdHoareTripleChecker+Invalid, 5300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2023-11-29 05:27:09,339 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [32842 Valid, 30719 Invalid, 5300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 5246 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2023-11-29 05:27:09,350 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18178 states.
[2023-11-29 05:27:09,495 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18178 to 15655.
[2023-11-29 05:27:09,506 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15655 states, 15654 states have (on average 1.6661556151782293) internal successors, (26082), 15654 states have internal predecessors, (26082), 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)
[2023-11-29 05:27:09,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15655 states to 15655 states and 26082 transitions.
[2023-11-29 05:27:09,524 INFO  L78                 Accepts]: Start accepts. Automaton has 15655 states and 26082 transitions. Word has length 2931
[2023-11-29 05:27:09,525 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:27:09,525 INFO  L495      AbstractCegarLoop]: Abstraction has 15655 states and 26082 transitions.
[2023-11-29 05:27:09,526 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 325.6666666666667) internal successors, (2931), 8 states have internal predecessors, (2931), 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)
[2023-11-29 05:27:09,526 INFO  L276                IsEmpty]: Start isEmpty. Operand 15655 states and 26082 transitions.
[2023-11-29 05:27:09,568 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2933
[2023-11-29 05:27:09,568 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:27:09,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:27:09,609 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 05:27:09,769 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:27:09,770 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:27:09,770 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:27:09,771 INFO  L85        PathProgramCache]: Analyzing trace with hash -448705101, now seen corresponding path program 1 times
[2023-11-29 05:27:09,771 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:27:09,771 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998519660]
[2023-11-29 05:27:09,771 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:09,771 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:27:09,975 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:27:09,976 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237986304]
[2023-11-29 05:27:09,976 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:09,976 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:27:09,976 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:27:09,977 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:27:09,978 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 05:27:12,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:27:12,676 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13022 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-11-29 05:27:12,713 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:27:13,967 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:27:13,967 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:27:13,967 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:27:13,967 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998519660]
[2023-11-29 05:27:13,967 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:27:13,967 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237986304]
[2023-11-29 05:27:13,967 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237986304] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:27:13,967 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:27:13,968 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:27:13,968 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876009876]
[2023-11-29 05:27:13,969 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:27:13,971 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:27:13,971 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:27:13,973 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:27:13,973 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:27:13,974 INFO  L87              Difference]: Start difference. First operand 15655 states and 26082 transitions. Second operand  has 7 states, 7 states have (on average 418.85714285714283) internal successors, (2932), 7 states have internal predecessors, (2932), 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)
[2023-11-29 05:27:22,354 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:27:22,354 INFO  L93              Difference]: Finished difference Result 60060 states and 100096 transitions.
[2023-11-29 05:27:22,355 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:27:22,355 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 418.85714285714283) internal successors, (2932), 7 states have internal predecessors, (2932), 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 2932
[2023-11-29 05:27:22,356 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:27:22,385 INFO  L225             Difference]: With dead ends: 60060
[2023-11-29 05:27:22,385 INFO  L226             Difference]: Without dead ends: 46255
[2023-11-29 05:27:22,399 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2937 GetRequests, 2926 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:27:22,400 INFO  L413           NwaCegarLoop]: 18860 mSDtfsCounter, 17124 mSDsluCounter, 58677 mSDsCounter, 0 mSdLazyCounter, 13866 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17124 SdHoareTripleChecker+Valid, 77537 SdHoareTripleChecker+Invalid, 13869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2023-11-29 05:27:22,400 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17124 Valid, 77537 Invalid, 13869 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 13866 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2023-11-29 05:27:22,429 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46255 states.
[2023-11-29 05:27:22,635 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46255 to 15711.
[2023-11-29 05:27:22,646 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15711 states, 15710 states have (on average 1.6657542966263525) internal successors, (26169), 15710 states have internal predecessors, (26169), 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)
[2023-11-29 05:27:22,663 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15711 states to 15711 states and 26169 transitions.
[2023-11-29 05:27:22,664 INFO  L78                 Accepts]: Start accepts. Automaton has 15711 states and 26169 transitions. Word has length 2932
[2023-11-29 05:27:22,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:27:22,664 INFO  L495      AbstractCegarLoop]: Abstraction has 15711 states and 26169 transitions.
[2023-11-29 05:27:22,665 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 418.85714285714283) internal successors, (2932), 7 states have internal predecessors, (2932), 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)
[2023-11-29 05:27:22,665 INFO  L276                IsEmpty]: Start isEmpty. Operand 15711 states and 26169 transitions.
[2023-11-29 05:27:22,748 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2934
[2023-11-29 05:27:22,748 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:27:22,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:27:22,778 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-11-29 05:27:22,949 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:27:22,950 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:27:22,951 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:27:22,952 INFO  L85        PathProgramCache]: Analyzing trace with hash -1178725795, now seen corresponding path program 1 times
[2023-11-29 05:27:22,952 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:27:22,952 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304278939]
[2023-11-29 05:27:22,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:22,952 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:27:23,153 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:27:23,153 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849730043]
[2023-11-29 05:27:23,154 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:23,154 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:27:23,154 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:27:23,155 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:27:23,156 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 05:27:25,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:27:25,867 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13025 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 05:27:25,899 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:27:32,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:27:32,823 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:27:32,823 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:27:32,823 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304278939]
[2023-11-29 05:27:32,824 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:27:32,824 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849730043]
[2023-11-29 05:27:32,824 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849730043] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:27:32,824 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:27:32,825 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:27:32,825 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602035310]
[2023-11-29 05:27:32,825 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:27:32,827 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:27:32,827 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:27:32,830 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:27:32,830 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:27:32,831 INFO  L87              Difference]: Start difference. First operand 15711 states and 26169 transitions. Second operand  has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 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)
[2023-11-29 05:27:40,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:27:40,821 INFO  L93              Difference]: Finished difference Result 60088 states and 100130 transitions.
[2023-11-29 05:27:40,822 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:27:40,822 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 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 2933
[2023-11-29 05:27:40,824 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:27:40,852 INFO  L225             Difference]: With dead ends: 60088
[2023-11-29 05:27:40,852 INFO  L226             Difference]: Without dead ends: 46255
[2023-11-29 05:27:40,864 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2938 GetRequests, 2927 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:27:40,864 INFO  L413           NwaCegarLoop]: 13574 mSDtfsCounter, 18847 mSDsluCounter, 45462 mSDsCounter, 0 mSdLazyCounter, 11654 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18847 SdHoareTripleChecker+Valid, 59036 SdHoareTripleChecker+Invalid, 11657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:27:40,865 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18847 Valid, 59036 Invalid, 11657 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 11654 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2023-11-29 05:27:40,892 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46255 states.
[2023-11-29 05:27:41,110 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46255 to 22577.
[2023-11-29 05:27:41,126 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22577 states, 22576 states have (on average 1.6662384833451453) internal successors, (37617), 22576 states have internal predecessors, (37617), 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)
[2023-11-29 05:27:41,148 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22577 states to 22577 states and 37617 transitions.
[2023-11-29 05:27:41,148 INFO  L78                 Accepts]: Start accepts. Automaton has 22577 states and 37617 transitions. Word has length 2933
[2023-11-29 05:27:41,150 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:27:41,150 INFO  L495      AbstractCegarLoop]: Abstraction has 22577 states and 37617 transitions.
[2023-11-29 05:27:41,150 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 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)
[2023-11-29 05:27:41,150 INFO  L276                IsEmpty]: Start isEmpty. Operand 22577 states and 37617 transitions.
[2023-11-29 05:27:41,189 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2934
[2023-11-29 05:27:41,189 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:27:41,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:27:41,220 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-11-29 05:27:41,390 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:27:41,391 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:27:41,391 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:27:41,391 INFO  L85        PathProgramCache]: Analyzing trace with hash -1208637857, now seen corresponding path program 1 times
[2023-11-29 05:27:41,391 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:27:41,391 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626814880]
[2023-11-29 05:27:41,392 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:41,392 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:27:41,596 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:27:41,596 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617777573]
[2023-11-29 05:27:41,596 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:41,596 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:27:41,596 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:27:41,597 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:27:41,598 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 05:27:44,295 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:27:44,369 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13026 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 05:27:44,401 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:27:50,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:27:50,611 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:27:50,611 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:27:50,611 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626814880]
[2023-11-29 05:27:50,611 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:27:50,612 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617777573]
[2023-11-29 05:27:50,612 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617777573] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:27:50,612 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:27:50,612 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:27:50,612 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906145855]
[2023-11-29 05:27:50,612 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:27:50,614 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:27:50,614 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:27:50,616 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:27:50,616 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:27:50,616 INFO  L87              Difference]: Start difference. First operand 22577 states and 37617 transitions. Second operand  has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 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)
[2023-11-29 05:27:58,788 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:27:58,789 INFO  L93              Difference]: Finished difference Result 94566 states and 157614 transitions.
[2023-11-29 05:27:58,789 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:27:58,790 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 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 2933
[2023-11-29 05:27:58,791 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:27:58,839 INFO  L225             Difference]: With dead ends: 94566
[2023-11-29 05:27:58,839 INFO  L226             Difference]: Without dead ends: 73867
[2023-11-29 05:27:58,859 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2938 GetRequests, 2927 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:27:58,860 INFO  L413           NwaCegarLoop]: 13572 mSDtfsCounter, 20704 mSDsluCounter, 45459 mSDsCounter, 0 mSdLazyCounter, 11666 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20704 SdHoareTripleChecker+Valid, 59031 SdHoareTripleChecker+Invalid, 11669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time
[2023-11-29 05:27:58,860 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20704 Valid, 59031 Invalid, 11669 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 11666 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time]
[2023-11-29 05:27:58,904 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 73867 states.
[2023-11-29 05:27:59,240 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 73867 to 22651.
[2023-11-29 05:27:59,256 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22651 states, 22650 states have (on average 1.6661810154525387) internal successors, (37739), 22650 states have internal predecessors, (37739), 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)
[2023-11-29 05:27:59,279 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22651 states to 22651 states and 37739 transitions.
[2023-11-29 05:27:59,280 INFO  L78                 Accepts]: Start accepts. Automaton has 22651 states and 37739 transitions. Word has length 2933
[2023-11-29 05:27:59,281 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:27:59,281 INFO  L495      AbstractCegarLoop]: Abstraction has 22651 states and 37739 transitions.
[2023-11-29 05:27:59,281 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 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)
[2023-11-29 05:27:59,282 INFO  L276                IsEmpty]: Start isEmpty. Operand 22651 states and 37739 transitions.
[2023-11-29 05:27:59,321 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2934
[2023-11-29 05:27:59,321 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:27:59,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:27:59,355 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2023-11-29 05:27:59,522 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:27:59,523 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:27:59,523 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:27:59,524 INFO  L85        PathProgramCache]: Analyzing trace with hash 1146936605, now seen corresponding path program 1 times
[2023-11-29 05:27:59,524 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:27:59,524 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203826455]
[2023-11-29 05:27:59,525 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:59,525 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:27:59,728 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:27:59,728 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142228631]
[2023-11-29 05:27:59,729 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:59,729 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:27:59,729 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:27:59,730 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:27:59,731 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-29 05:28:02,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:28:02,758 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13027 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 05:28:02,794 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:28:09,430 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:28:09,431 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:28:09,431 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:28:09,431 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203826455]
[2023-11-29 05:28:09,431 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:28:09,431 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142228631]
[2023-11-29 05:28:09,431 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142228631] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:28:09,431 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:28:09,432 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 05:28:09,432 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980864119]
[2023-11-29 05:28:09,432 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:28:09,433 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:28:09,433 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:28:09,435 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:28:09,435 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:28:09,435 INFO  L87              Difference]: Start difference. First operand 22651 states and 37739 transitions. Second operand  has 6 states, 6 states have (on average 488.8333333333333) internal successors, (2933), 6 states have internal predecessors, (2933), 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)
[2023-11-29 05:28:13,004 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:28:13,004 INFO  L93              Difference]: Finished difference Result 58408 states and 97344 transitions.
[2023-11-29 05:28:13,004 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:28:13,005 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 488.8333333333333) internal successors, (2933), 6 states have internal predecessors, (2933), 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 2933
[2023-11-29 05:28:13,007 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:28:13,030 INFO  L225             Difference]: With dead ends: 58408
[2023-11-29 05:28:13,030 INFO  L226             Difference]: Without dead ends: 37649
[2023-11-29 05:28:13,043 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2934 GetRequests, 2928 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:28:13,043 INFO  L413           NwaCegarLoop]: 5821 mSDtfsCounter, 11877 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 5363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11877 SdHoareTripleChecker+Valid, 23262 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:28:13,044 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11877 Valid, 23262 Invalid, 5364 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5363 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2023-11-29 05:28:13,067 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37649 states.
[2023-11-29 05:28:13,307 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37649 to 29515.
[2023-11-29 05:28:13,327 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29515 states, 29514 states have (on average 1.666497255539744) internal successors, (49185), 29514 states have internal predecessors, (49185), 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)
[2023-11-29 05:28:13,359 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29515 states to 29515 states and 49185 transitions.
[2023-11-29 05:28:13,359 INFO  L78                 Accepts]: Start accepts. Automaton has 29515 states and 49185 transitions. Word has length 2933
[2023-11-29 05:28:13,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:28:13,360 INFO  L495      AbstractCegarLoop]: Abstraction has 29515 states and 49185 transitions.
[2023-11-29 05:28:13,361 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 488.8333333333333) internal successors, (2933), 6 states have internal predecessors, (2933), 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)
[2023-11-29 05:28:13,361 INFO  L276                IsEmpty]: Start isEmpty. Operand 29515 states and 49185 transitions.
[2023-11-29 05:28:13,400 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2935
[2023-11-29 05:28:13,400 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:28:13,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:28:13,430 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2023-11-29 05:28:13,601 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:28:13,601 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:28:13,601 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:28:13,602 INFO  L85        PathProgramCache]: Analyzing trace with hash -227574839, now seen corresponding path program 1 times
[2023-11-29 05:28:13,602 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:28:13,602 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299232702]
[2023-11-29 05:28:13,602 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:28:13,602 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:28:13,804 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:28:13,805 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901333861]
[2023-11-29 05:28:13,805 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:28:13,805 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:28:13,805 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:28:13,806 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:28:13,807 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-11-29 05:28:16,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:28:16,532 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13028 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 05:28:16,562 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:28:23,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:28:23,625 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:28:23,625 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:28:23,625 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299232702]
[2023-11-29 05:28:23,625 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:28:23,625 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901333861]
[2023-11-29 05:28:23,625 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901333861] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:28:23,625 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:28:23,626 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:28:23,626 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237711745]
[2023-11-29 05:28:23,626 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:28:23,628 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:28:23,628 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:28:23,629 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:28:23,630 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:28:23,630 INFO  L87              Difference]: Start difference. First operand 29515 states and 49185 transitions. Second operand  has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 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)
[2023-11-29 05:28:31,734 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:28:31,734 INFO  L93              Difference]: Finished difference Result 101486 states and 169148 transitions.
[2023-11-29 05:28:31,734 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:28:31,735 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 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 2934
[2023-11-29 05:28:31,737 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:28:31,783 INFO  L225             Difference]: With dead ends: 101486
[2023-11-29 05:28:31,783 INFO  L226             Difference]: Without dead ends: 73863
[2023-11-29 05:28:31,799 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2939 GetRequests, 2928 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:28:31,800 INFO  L413           NwaCegarLoop]: 13562 mSDtfsCounter, 20650 mSDsluCounter, 45434 mSDsCounter, 0 mSdLazyCounter, 11624 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20650 SdHoareTripleChecker+Valid, 58996 SdHoareTripleChecker+Invalid, 11627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:28:31,800 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20650 Valid, 58996 Invalid, 11627 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 11624 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2023-11-29 05:28:31,843 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 73863 states.
[2023-11-29 05:28:32,189 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 73863 to 36393.
[2023-11-29 05:28:32,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36393 states, 36392 states have (on average 1.6665475928775555) internal successors, (60649), 36392 states have internal predecessors, (60649), 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)
[2023-11-29 05:28:32,258 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36393 states to 36393 states and 60649 transitions.
[2023-11-29 05:28:32,258 INFO  L78                 Accepts]: Start accepts. Automaton has 36393 states and 60649 transitions. Word has length 2934
[2023-11-29 05:28:32,260 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:28:32,260 INFO  L495      AbstractCegarLoop]: Abstraction has 36393 states and 60649 transitions.
[2023-11-29 05:28:32,260 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 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)
[2023-11-29 05:28:32,260 INFO  L276                IsEmpty]: Start isEmpty. Operand 36393 states and 60649 transitions.
[2023-11-29 05:28:32,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2935
[2023-11-29 05:28:32,301 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:28:32,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:28:32,332 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-11-29 05:28:32,502 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-11-29 05:28:32,503 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:28:32,503 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:28:32,503 INFO  L85        PathProgramCache]: Analyzing trace with hash -1154848761, now seen corresponding path program 1 times
[2023-11-29 05:28:32,504 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:28:32,504 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10963796]
[2023-11-29 05:28:32,504 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:28:32,504 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:28:32,707 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:28:32,708 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640131297]
[2023-11-29 05:28:32,708 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:28:32,708 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:28:32,709 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:28:32,709 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:28:32,710 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-11-29 05:28:35,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:28:35,475 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13029 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 05:28:35,507 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:28:42,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:28:42,738 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:28:42,738 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:28:42,738 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10963796]
[2023-11-29 05:28:42,738 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:28:42,738 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640131297]
[2023-11-29 05:28:42,738 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [640131297] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:28:42,738 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:28:42,739 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:28:42,739 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955504280]
[2023-11-29 05:28:42,739 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:28:42,741 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:28:42,741 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:28:42,742 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:28:42,742 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:28:42,743 INFO  L87              Difference]: Start difference. First operand 36393 states and 60649 transitions. Second operand  has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 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)
[2023-11-29 05:28:50,952 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:28:50,952 INFO  L93              Difference]: Finished difference Result 122144 states and 203572 transitions.
[2023-11-29 05:28:50,952 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:28:50,953 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 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 2934
[2023-11-29 05:28:50,955 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:28:51,012 INFO  L225             Difference]: With dead ends: 122144
[2023-11-29 05:28:51,012 INFO  L226             Difference]: Without dead ends: 87643
[2023-11-29 05:28:51,039 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2939 GetRequests, 2928 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:28:51,039 INFO  L413           NwaCegarLoop]: 13560 mSDtfsCounter, 18899 mSDsluCounter, 45431 mSDsCounter, 0 mSdLazyCounter, 11636 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18899 SdHoareTripleChecker+Valid, 58991 SdHoareTripleChecker+Invalid, 11639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time
[2023-11-29 05:28:51,040 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18899 Valid, 58991 Invalid, 11639 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 11636 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time]
[2023-11-29 05:28:51,090 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87643 states.
[2023-11-29 05:28:51,518 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87643 to 29527.
[2023-11-29 05:28:51,539 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29527 states, 29526 states have (on average 1.666361850572377) internal successors, (49201), 29526 states have internal predecessors, (49201), 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)
[2023-11-29 05:28:51,572 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29527 states to 29527 states and 49201 transitions.
[2023-11-29 05:28:51,572 INFO  L78                 Accepts]: Start accepts. Automaton has 29527 states and 49201 transitions. Word has length 2934
[2023-11-29 05:28:51,573 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:28:51,573 INFO  L495      AbstractCegarLoop]: Abstraction has 29527 states and 49201 transitions.
[2023-11-29 05:28:51,574 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 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)
[2023-11-29 05:28:51,574 INFO  L276                IsEmpty]: Start isEmpty. Operand 29527 states and 49201 transitions.
[2023-11-29 05:28:51,614 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2935
[2023-11-29 05:28:51,614 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:28:51,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:28:51,651 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-11-29 05:28:51,815 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:28:51,816 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:28:51,816 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:28:51,817 INFO  L85        PathProgramCache]: Analyzing trace with hash 1433602187, now seen corresponding path program 1 times
[2023-11-29 05:28:51,817 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:28:51,817 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760852974]
[2023-11-29 05:28:51,817 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:28:51,818 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:28:52,027 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:28:52,027 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555054509]
[2023-11-29 05:28:52,027 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:28:52,028 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:28:52,028 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:28:52,028 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:28:52,029 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-11-29 05:28:54,834 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:28:54,910 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13031 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 05:28:55,254 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:29:02,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:29:02,505 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:29:02,505 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:29:02,505 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760852974]
[2023-11-29 05:29:02,506 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:29:02,506 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555054509]
[2023-11-29 05:29:02,506 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555054509] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:29:02,506 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:29:02,507 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 05:29:02,507 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850648051]
[2023-11-29 05:29:02,507 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:29:02,508 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:29:02,508 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:29:02,510 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:29:02,510 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:29:02,511 INFO  L87              Difference]: Start difference. First operand 29527 states and 49201 transitions. Second operand  has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 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)
[2023-11-29 05:29:06,114 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:29:06,114 INFO  L93              Difference]: Finished difference Result 65308 states and 108836 transitions.
[2023-11-29 05:29:06,115 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:29:06,115 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 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 2934
[2023-11-29 05:29:06,117 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:29:06,141 INFO  L225             Difference]: With dead ends: 65308
[2023-11-29 05:29:06,141 INFO  L226             Difference]: Without dead ends: 37673
[2023-11-29 05:29:06,156 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2935 GetRequests, 2929 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:29:06,156 INFO  L413           NwaCegarLoop]: 5821 mSDtfsCounter, 9014 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 5363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9014 SdHoareTripleChecker+Valid, 23262 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:29:06,156 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9014 Valid, 23262 Invalid, 5364 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5363 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2023-11-29 05:29:06,179 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37673 states.
[2023-11-29 05:29:06,401 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37673 to 29539.
[2023-11-29 05:29:06,421 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29539 states, 29538 states have (on average 1.6662942650145576) internal successors, (49219), 29538 states have internal predecessors, (49219), 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)
[2023-11-29 05:29:06,454 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29539 states to 29539 states and 49219 transitions.
[2023-11-29 05:29:06,454 INFO  L78                 Accepts]: Start accepts. Automaton has 29539 states and 49219 transitions. Word has length 2934
[2023-11-29 05:29:06,456 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:29:06,456 INFO  L495      AbstractCegarLoop]: Abstraction has 29539 states and 49219 transitions.
[2023-11-29 05:29:06,456 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 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)
[2023-11-29 05:29:06,456 INFO  L276                IsEmpty]: Start isEmpty. Operand 29539 states and 49219 transitions.
[2023-11-29 05:29:06,495 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2936
[2023-11-29 05:29:06,495 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:29:06,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:29:06,530 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-11-29 05:29:06,696 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:29:06,697 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:29:06,697 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:29:06,697 INFO  L85        PathProgramCache]: Analyzing trace with hash -817963223, now seen corresponding path program 1 times
[2023-11-29 05:29:06,697 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:29:06,697 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973085201]
[2023-11-29 05:29:06,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:06,698 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:29:06,909 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:29:06,909 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324270180]
[2023-11-29 05:29:06,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:06,910 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:29:06,910 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:29:06,911 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:29:06,911 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-11-29 05:29:09,757 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:29:09,832 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13031 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 05:29:09,862 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:29:12,651 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:29:12,651 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:29:12,651 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:29:12,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973085201]
[2023-11-29 05:29:12,651 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:29:12,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324270180]
[2023-11-29 05:29:12,651 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324270180] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:29:12,651 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:29:12,652 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:29:12,653 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229635863]
[2023-11-29 05:29:12,653 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:29:12,654 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:29:12,654 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:29:12,656 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:29:12,656 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:29:12,657 INFO  L87              Difference]: Start difference. First operand 29539 states and 49219 transitions. Second operand  has 7 states, 7 states have (on average 419.2857142857143) internal successors, (2935), 7 states have internal predecessors, (2935), 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)
[2023-11-29 05:29:18,807 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:29:18,807 INFO  L93              Difference]: Finished difference Result 94521 states and 157516 transitions.
[2023-11-29 05:29:18,807 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:29:18,808 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.2857142857143) internal successors, (2935), 7 states have internal predecessors, (2935), 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 2935
[2023-11-29 05:29:18,809 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:29:18,844 INFO  L225             Difference]: With dead ends: 94521
[2023-11-29 05:29:18,844 INFO  L226             Difference]: Without dead ends: 65433
[2023-11-29 05:29:18,856 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2937 GetRequests, 2929 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:29:18,856 INFO  L413           NwaCegarLoop]: 13756 mSDtfsCounter, 16563 mSDsluCounter, 42770 mSDsCounter, 0 mSdLazyCounter, 9726 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16563 SdHoareTripleChecker+Valid, 56526 SdHoareTripleChecker+Invalid, 9729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:29:18,856 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16563 Valid, 56526 Invalid, 9729 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 9726 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-11-29 05:29:18,888 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65433 states.
[2023-11-29 05:29:19,191 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65433 to 33329.
[2023-11-29 05:29:19,213 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33329 states, 33328 states have (on average 1.6661665866538646) internal successors, (55530), 33328 states have internal predecessors, (55530), 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)
[2023-11-29 05:29:19,247 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33329 states to 33329 states and 55530 transitions.
[2023-11-29 05:29:19,248 INFO  L78                 Accepts]: Start accepts. Automaton has 33329 states and 55530 transitions. Word has length 2935
[2023-11-29 05:29:19,248 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:29:19,248 INFO  L495      AbstractCegarLoop]: Abstraction has 33329 states and 55530 transitions.
[2023-11-29 05:29:19,249 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.2857142857143) internal successors, (2935), 7 states have internal predecessors, (2935), 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)
[2023-11-29 05:29:19,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 33329 states and 55530 transitions.
[2023-11-29 05:29:19,287 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2937
[2023-11-29 05:29:19,287 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:29:19,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:29:19,320 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2023-11-29 05:29:19,488 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:29:19,488 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:29:19,488 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:29:19,489 INFO  L85        PathProgramCache]: Analyzing trace with hash -287181763, now seen corresponding path program 1 times
[2023-11-29 05:29:19,489 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:29:19,489 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60090967]
[2023-11-29 05:29:19,489 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:19,489 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:29:19,698 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:29:19,698 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897899796]
[2023-11-29 05:29:19,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:19,699 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:29:19,699 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:29:19,700 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:29:19,701 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-11-29 05:29:22,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:29:22,625 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13034 conjuncts, 33 conjunts are in the unsatisfiable core
[2023-11-29 05:29:22,657 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:29:27,895 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:29:27,895 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:29:27,895 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:29:27,895 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60090967]
[2023-11-29 05:29:27,895 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:29:27,895 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897899796]
[2023-11-29 05:29:27,895 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897899796] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:29:27,895 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:29:27,896 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-29 05:29:27,896 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952521536]
[2023-11-29 05:29:27,896 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:29:27,898 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-29 05:29:27,898 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:29:27,899 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-29 05:29:27,900 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:29:27,900 INFO  L87              Difference]: Start difference. First operand 33329 states and 55530 transitions. Second operand  has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 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)
[2023-11-29 05:29:36,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:29:36,398 INFO  L93              Difference]: Finished difference Result 83590 states and 139245 transitions.
[2023-11-29 05:29:36,398 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2023-11-29 05:29:36,399 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 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 2936
[2023-11-29 05:29:36,400 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:29:36,435 INFO  L225             Difference]: With dead ends: 83590
[2023-11-29 05:29:36,436 INFO  L226             Difference]: Without dead ends: 52153
[2023-11-29 05:29:36,455 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2946 GetRequests, 2927 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420
[2023-11-29 05:29:36,455 INFO  L413           NwaCegarLoop]: 17109 mSDtfsCounter, 42713 mSDsluCounter, 73126 mSDsCounter, 0 mSdLazyCounter, 12566 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42713 SdHoareTripleChecker+Valid, 90235 SdHoareTripleChecker+Invalid, 12622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 12566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time
[2023-11-29 05:29:36,455 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [42713 Valid, 90235 Invalid, 12622 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [56 Valid, 12566 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time]
[2023-11-29 05:29:36,587 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 52153 states.
[2023-11-29 05:29:36,871 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 52153 to 34727.
[2023-11-29 05:29:36,894 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34727 states, 34726 states have (on average 1.6660715314173817) internal successors, (57856), 34726 states have internal predecessors, (57856), 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)
[2023-11-29 05:29:36,928 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34727 states to 34727 states and 57856 transitions.
[2023-11-29 05:29:36,928 INFO  L78                 Accepts]: Start accepts. Automaton has 34727 states and 57856 transitions. Word has length 2936
[2023-11-29 05:29:36,929 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:29:36,929 INFO  L495      AbstractCegarLoop]: Abstraction has 34727 states and 57856 transitions.
[2023-11-29 05:29:36,930 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 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)
[2023-11-29 05:29:36,930 INFO  L276                IsEmpty]: Start isEmpty. Operand 34727 states and 57856 transitions.
[2023-11-29 05:29:36,969 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2937
[2023-11-29 05:29:36,969 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:29:36,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:29:37,010 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2023-11-29 05:29:37,170 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32
[2023-11-29 05:29:37,171 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:29:37,171 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:29:37,172 INFO  L85        PathProgramCache]: Analyzing trace with hash 430396667, now seen corresponding path program 1 times
[2023-11-29 05:29:37,172 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:29:37,172 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946083341]
[2023-11-29 05:29:37,172 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:37,172 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:29:37,371 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:29:37,371 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935422776]
[2023-11-29 05:29:37,372 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:37,372 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:29:37,372 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:29:37,373 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:29:37,374 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-11-29 05:29:40,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:29:40,343 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13035 conjuncts, 33 conjunts are in the unsatisfiable core
[2023-11-29 05:29:40,375 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:29:45,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:29:45,653 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:29:45,653 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:29:45,653 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946083341]
[2023-11-29 05:29:45,653 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:29:45,653 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935422776]
[2023-11-29 05:29:45,653 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935422776] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:29:45,654 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:29:45,654 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2023-11-29 05:29:45,655 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016720795]
[2023-11-29 05:29:45,655 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:29:45,656 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-11-29 05:29:45,657 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:29:45,658 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-11-29 05:29:45,659 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:29:45,659 INFO  L87              Difference]: Start difference. First operand 34727 states and 57856 transitions. Second operand  has 11 states, 11 states have (on average 266.90909090909093) internal successors, (2936), 10 states have internal predecessors, (2936), 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)
[2023-11-29 05:29:53,685 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:29:53,685 INFO  L93              Difference]: Finished difference Result 83823 states and 139627 transitions.
[2023-11-29 05:29:53,685 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-11-29 05:29:53,686 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 266.90909090909093) internal successors, (2936), 10 states have internal predecessors, (2936), 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 2936
[2023-11-29 05:29:53,687 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:29:53,723 INFO  L225             Difference]: With dead ends: 83823
[2023-11-29 05:29:53,723 INFO  L226             Difference]: Without dead ends: 52386
[2023-11-29 05:29:53,742 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2943 GetRequests, 2926 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342
[2023-11-29 05:29:53,743 INFO  L413           NwaCegarLoop]: 14055 mSDtfsCounter, 43824 mSDsluCounter, 57132 mSDsCounter, 0 mSdLazyCounter, 11822 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43824 SdHoareTripleChecker+Valid, 71187 SdHoareTripleChecker+Invalid, 11878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 11822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:29:53,743 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43824 Valid, 71187 Invalid, 11878 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [56 Valid, 11822 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time]
[2023-11-29 05:29:53,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 52386 states.
[2023-11-29 05:29:54,065 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 52386 to 35447.
[2023-11-29 05:29:54,088 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 35447 states, 35446 states have (on average 1.666027196298595) internal successors, (59054), 35446 states have internal predecessors, (59054), 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)
[2023-11-29 05:29:54,124 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35447 states to 35447 states and 59054 transitions.
[2023-11-29 05:29:54,124 INFO  L78                 Accepts]: Start accepts. Automaton has 35447 states and 59054 transitions. Word has length 2936
[2023-11-29 05:29:54,125 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:29:54,125 INFO  L495      AbstractCegarLoop]: Abstraction has 35447 states and 59054 transitions.
[2023-11-29 05:29:54,125 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 266.90909090909093) internal successors, (2936), 10 states have internal predecessors, (2936), 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)
[2023-11-29 05:29:54,126 INFO  L276                IsEmpty]: Start isEmpty. Operand 35447 states and 59054 transitions.
[2023-11-29 05:29:54,165 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2937
[2023-11-29 05:29:54,165 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:29:54,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:29:54,205 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-11-29 05:29:54,366 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2023-11-29 05:29:54,366 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:29:54,367 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:29:54,367 INFO  L85        PathProgramCache]: Analyzing trace with hash 970225209, now seen corresponding path program 1 times
[2023-11-29 05:29:54,367 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:29:54,367 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772549873]
[2023-11-29 05:29:54,368 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:54,368 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:29:54,621 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:29:54,621 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535775761]
[2023-11-29 05:29:54,622 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:54,622 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:29:54,622 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:29:54,623 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:29:54,624 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-11-29 05:29:57,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:29:57,551 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13036 conjuncts, 35 conjunts are in the unsatisfiable core
[2023-11-29 05:29:57,584 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:30:03,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:30:03,355 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:30:03,355 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:30:03,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772549873]
[2023-11-29 05:30:03,356 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:30:03,356 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535775761]
[2023-11-29 05:30:03,356 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535775761] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:30:03,356 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:30:03,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-29 05:30:03,356 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988639004]
[2023-11-29 05:30:03,357 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:30:03,358 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-29 05:30:03,358 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:30:03,360 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-29 05:30:03,360 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:30:03,360 INFO  L87              Difference]: Start difference. First operand 35447 states and 59054 transitions. Second operand  has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 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)
[2023-11-29 05:30:10,634 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:30:10,634 INFO  L93              Difference]: Finished difference Result 90328 states and 150460 transitions.
[2023-11-29 05:30:10,634 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2023-11-29 05:30:10,635 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 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 2936
[2023-11-29 05:30:10,636 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:30:10,674 INFO  L225             Difference]: With dead ends: 90328
[2023-11-29 05:30:10,675 INFO  L226             Difference]: Without dead ends: 58891
[2023-11-29 05:30:10,694 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2946 GetRequests, 2927 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420
[2023-11-29 05:30:10,694 INFO  L413           NwaCegarLoop]: 17109 mSDtfsCounter, 42614 mSDsluCounter, 67426 mSDsCounter, 0 mSdLazyCounter, 11327 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42614 SdHoareTripleChecker+Valid, 84535 SdHoareTripleChecker+Invalid, 11383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 11327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:30:10,695 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [42614 Valid, 84535 Invalid, 11383 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [56 Valid, 11327 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2023-11-29 05:30:10,729 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 58891 states.
[2023-11-29 05:30:11,068 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 58891 to 35447.
[2023-11-29 05:30:11,093 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 35447 states, 35446 states have (on average 1.666027196298595) internal successors, (59054), 35446 states have internal predecessors, (59054), 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)
[2023-11-29 05:30:11,130 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35447 states to 35447 states and 59054 transitions.
[2023-11-29 05:30:11,130 INFO  L78                 Accepts]: Start accepts. Automaton has 35447 states and 59054 transitions. Word has length 2936
[2023-11-29 05:30:11,131 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:30:11,131 INFO  L495      AbstractCegarLoop]: Abstraction has 35447 states and 59054 transitions.
[2023-11-29 05:30:11,131 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 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)
[2023-11-29 05:30:11,132 INFO  L276                IsEmpty]: Start isEmpty. Operand 35447 states and 59054 transitions.
[2023-11-29 05:30:11,171 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2937
[2023-11-29 05:30:11,171 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:30:11,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:30:11,211 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2023-11-29 05:30:11,373 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2023-11-29 05:30:11,373 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:30:11,373 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:30:11,374 INFO  L85        PathProgramCache]: Analyzing trace with hash -1583241285, now seen corresponding path program 1 times
[2023-11-29 05:30:11,374 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:30:11,374 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702067513]
[2023-11-29 05:30:11,375 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:11,375 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:30:11,576 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:30:11,576 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202363513]
[2023-11-29 05:30:11,576 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:11,576 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:30:11,577 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:30:11,577 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:30:11,578 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-11-29 05:30:14,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:30:14,530 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13037 conjuncts, 35 conjunts are in the unsatisfiable core
[2023-11-29 05:30:14,563 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:30:21,796 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:30:21,796 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:30:21,796 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:30:21,796 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702067513]
[2023-11-29 05:30:21,796 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:30:21,796 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202363513]
[2023-11-29 05:30:21,796 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202363513] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:30:21,796 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:30:21,797 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:30:21,797 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534348975]
[2023-11-29 05:30:21,797 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:30:21,798 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:30:21,798 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:30:21,800 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:30:21,800 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:30:21,801 INFO  L87              Difference]: Start difference. First operand 35447 states and 59054 transitions. Second operand  has 8 states, 8 states have (on average 367.0) internal successors, (2936), 7 states have internal predecessors, (2936), 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)
[2023-11-29 05:30:27,173 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:30:27,173 INFO  L93              Difference]: Finished difference Result 78218 states and 130296 transitions.
[2023-11-29 05:30:27,174 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 05:30:27,174 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 367.0) internal successors, (2936), 7 states have internal predecessors, (2936), 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 2936
[2023-11-29 05:30:27,175 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:30:27,205 INFO  L225             Difference]: With dead ends: 78218
[2023-11-29 05:30:27,205 INFO  L226             Difference]: Without dead ends: 46781
[2023-11-29 05:30:27,223 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2940 GetRequests, 2929 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:30:27,223 INFO  L413           NwaCegarLoop]: 11002 mSDtfsCounter, 31753 mSDsluCounter, 36474 mSDsCounter, 0 mSdLazyCounter, 6700 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31753 SdHoareTripleChecker+Valid, 47476 SdHoareTripleChecker+Invalid, 6755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 6700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2023-11-29 05:30:27,223 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31753 Valid, 47476 Invalid, 6755 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [55 Valid, 6700 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2023-11-29 05:30:27,252 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46781 states.
[2023-11-29 05:30:27,518 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46781 to 36361.
[2023-11-29 05:30:27,541 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36361 states, 36360 states have (on average 1.6660616061606162) internal successors, (60578), 36360 states have internal predecessors, (60578), 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)
[2023-11-29 05:30:27,583 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36361 states to 36361 states and 60578 transitions.
[2023-11-29 05:30:27,583 INFO  L78                 Accepts]: Start accepts. Automaton has 36361 states and 60578 transitions. Word has length 2936
[2023-11-29 05:30:27,584 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:30:27,584 INFO  L495      AbstractCegarLoop]: Abstraction has 36361 states and 60578 transitions.
[2023-11-29 05:30:27,585 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 367.0) internal successors, (2936), 7 states have internal predecessors, (2936), 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)
[2023-11-29 05:30:27,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 36361 states and 60578 transitions.
[2023-11-29 05:30:27,626 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2938
[2023-11-29 05:30:27,626 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:30:27,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:30:27,669 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2023-11-29 05:30:27,827 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2023-11-29 05:30:27,828 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:30:27,828 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:30:27,829 INFO  L85        PathProgramCache]: Analyzing trace with hash -367749179, now seen corresponding path program 1 times
[2023-11-29 05:30:27,829 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:30:27,829 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739135546]
[2023-11-29 05:30:27,830 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:27,830 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:30:28,090 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:30:28,090 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919382242]
[2023-11-29 05:30:28,091 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:28,091 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:30:28,091 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:30:28,092 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:30:28,093 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-11-29 05:30:30,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:30:30,850 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13037 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-11-29 05:30:30,891 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:30:32,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:30:32,505 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:30:32,505 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:30:32,505 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739135546]
[2023-11-29 05:30:32,506 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:30:32,506 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919382242]
[2023-11-29 05:30:32,506 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919382242] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:30:32,506 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:30:32,506 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:30:32,507 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45457088]
[2023-11-29 05:30:32,507 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:30:32,508 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:30:32,508 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:30:32,510 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:30:32,510 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:30:32,511 INFO  L87              Difference]: Start difference. First operand 36361 states and 60578 transitions. Second operand  has 7 states, 7 states have (on average 419.57142857142856) internal successors, (2937), 7 states have internal predecessors, (2937), 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)
[2023-11-29 05:30:40,190 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:30:40,190 INFO  L93              Difference]: Finished difference Result 136175 states and 226882 transitions.
[2023-11-29 05:30:40,191 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:30:40,191 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.57142857142856) internal successors, (2937), 7 states have internal predecessors, (2937), 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 2937
[2023-11-29 05:30:40,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:30:40,263 INFO  L225             Difference]: With dead ends: 136175
[2023-11-29 05:30:40,264 INFO  L226             Difference]: Without dead ends: 104624
[2023-11-29 05:30:40,293 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2942 GetRequests, 2931 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:30:40,294 INFO  L413           NwaCegarLoop]: 17647 mSDtfsCounter, 16056 mSDsluCounter, 55644 mSDsCounter, 0 mSdLazyCounter, 12744 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16056 SdHoareTripleChecker+Valid, 73291 SdHoareTripleChecker+Invalid, 12747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-11-29 05:30:40,294 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16056 Valid, 73291 Invalid, 12747 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 12744 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-11-29 05:30:40,357 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104624 states.
[2023-11-29 05:30:40,929 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104624 to 36529.
[2023-11-29 05:30:40,949 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36529 states, 36528 states have (on average 1.6655168637757336) internal successors, (60838), 36528 states have internal predecessors, (60838), 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)
[2023-11-29 05:30:40,985 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36529 states to 36529 states and 60838 transitions.
[2023-11-29 05:30:40,985 INFO  L78                 Accepts]: Start accepts. Automaton has 36529 states and 60838 transitions. Word has length 2937
[2023-11-29 05:30:40,986 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:30:40,986 INFO  L495      AbstractCegarLoop]: Abstraction has 36529 states and 60838 transitions.
[2023-11-29 05:30:40,986 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.57142857142856) internal successors, (2937), 7 states have internal predecessors, (2937), 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)
[2023-11-29 05:30:40,987 INFO  L276                IsEmpty]: Start isEmpty. Operand 36529 states and 60838 transitions.
[2023-11-29 05:30:41,027 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2939
[2023-11-29 05:30:41,027 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:30:41,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:30:41,059 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2023-11-29 05:30:41,228 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2023-11-29 05:30:41,228 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:30:41,229 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:30:41,230 INFO  L85        PathProgramCache]: Analyzing trace with hash 849599483, now seen corresponding path program 1 times
[2023-11-29 05:30:41,230 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:30:41,230 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061450548]
[2023-11-29 05:30:41,231 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:41,231 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:30:41,445 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:30:41,445 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938039073]
[2023-11-29 05:30:41,446 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:41,446 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:30:41,446 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:30:41,447 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:30:41,448 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-11-29 05:30:44,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:30:44,245 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13040 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 05:30:44,274 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:30:50,132 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:30:50,132 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:30:50,132 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:30:50,132 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061450548]
[2023-11-29 05:30:50,133 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:30:50,133 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938039073]
[2023-11-29 05:30:50,133 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938039073] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:30:50,133 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:30:50,134 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:30:50,134 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239214716]
[2023-11-29 05:30:50,134 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:30:50,136 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:30:50,136 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:30:50,139 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:30:50,139 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:30:50,140 INFO  L87              Difference]: Start difference. First operand 36529 states and 60838 transitions. Second operand  has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 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)
[2023-11-29 05:30:57,854 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:30:57,854 INFO  L93              Difference]: Finished difference Result 136229 states and 226936 transitions.
[2023-11-29 05:30:57,854 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:30:57,855 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 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 2938
[2023-11-29 05:30:57,857 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:30:57,931 INFO  L225             Difference]: With dead ends: 136229
[2023-11-29 05:30:57,931 INFO  L226             Difference]: Without dead ends: 104624
[2023-11-29 05:30:57,960 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2943 GetRequests, 2932 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:30:57,960 INFO  L413           NwaCegarLoop]: 13167 mSDtfsCounter, 18896 mSDsluCounter, 44444 mSDsCounter, 0 mSdLazyCounter, 11568 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18896 SdHoareTripleChecker+Valid, 57611 SdHoareTripleChecker+Invalid, 11571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:30:57,960 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18896 Valid, 57611 Invalid, 11571 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 11568 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2023-11-29 05:30:58,024 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104624 states.
[2023-11-29 05:30:58,561 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104624 to 51923.
[2023-11-29 05:30:58,600 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 51923 states, 51922 states have (on average 1.6657293632756827) internal successors, (86488), 51922 states have internal predecessors, (86488), 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)
[2023-11-29 05:30:58,664 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51923 states to 51923 states and 86488 transitions.
[2023-11-29 05:30:58,664 INFO  L78                 Accepts]: Start accepts. Automaton has 51923 states and 86488 transitions. Word has length 2938
[2023-11-29 05:30:58,665 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:30:58,665 INFO  L495      AbstractCegarLoop]: Abstraction has 51923 states and 86488 transitions.
[2023-11-29 05:30:58,666 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 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)
[2023-11-29 05:30:58,666 INFO  L276                IsEmpty]: Start isEmpty. Operand 51923 states and 86488 transitions.
[2023-11-29 05:30:58,708 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2939
[2023-11-29 05:30:58,708 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:30:58,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:30:58,753 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0
[2023-11-29 05:30:58,909 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-11-29 05:30:58,910 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:30:58,910 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:30:58,911 INFO  L85        PathProgramCache]: Analyzing trace with hash 1505973499, now seen corresponding path program 1 times
[2023-11-29 05:30:58,911 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:30:58,911 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87393980]
[2023-11-29 05:30:58,911 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:58,911 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:30:59,118 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:30:59,118 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576399837]
[2023-11-29 05:30:59,119 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:59,119 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:30:59,119 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:30:59,120 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:30:59,121 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-11-29 05:31:01,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:31:01,911 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13044 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 05:31:01,942 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:31:07,787 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:31:07,787 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:31:07,787 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:31:07,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87393980]
[2023-11-29 05:31:07,788 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:31:07,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576399837]
[2023-11-29 05:31:07,788 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [576399837] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:31:07,788 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:31:07,788 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:31:07,789 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677996598]
[2023-11-29 05:31:07,789 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:31:07,790 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:31:07,790 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:31:07,792 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:31:07,792 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:31:07,792 INFO  L87              Difference]: Start difference. First operand 51923 states and 86488 transitions. Second operand  has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 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)
[2023-11-29 05:31:15,600 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:31:15,600 INFO  L93              Difference]: Finished difference Result 213675 states and 355966 transitions.
[2023-11-29 05:31:15,601 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:31:15,601 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 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 2938
[2023-11-29 05:31:15,603 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:31:15,691 INFO  L225             Difference]: With dead ends: 213675
[2023-11-29 05:31:15,691 INFO  L226             Difference]: Without dead ends: 166676
[2023-11-29 05:31:15,714 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2943 GetRequests, 2932 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:31:15,715 INFO  L413           NwaCegarLoop]: 13165 mSDtfsCounter, 17491 mSDsluCounter, 44441 mSDsCounter, 0 mSdLazyCounter, 11580 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17491 SdHoareTripleChecker+Valid, 57606 SdHoareTripleChecker+Invalid, 11583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:31:15,715 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17491 Valid, 57606 Invalid, 11583 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 11580 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2023-11-29 05:31:15,794 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 166676 states.
[2023-11-29 05:31:16,416 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 166676 to 52131.
[2023-11-29 05:31:16,450 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 52131 states, 52130 states have (on average 1.6656819489737196) internal successors, (86832), 52130 states have internal predecessors, (86832), 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)
[2023-11-29 05:31:16,507 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 52131 states to 52131 states and 86832 transitions.
[2023-11-29 05:31:16,507 INFO  L78                 Accepts]: Start accepts. Automaton has 52131 states and 86832 transitions. Word has length 2938
[2023-11-29 05:31:16,509 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:31:16,509 INFO  L495      AbstractCegarLoop]: Abstraction has 52131 states and 86832 transitions.
[2023-11-29 05:31:16,509 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 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)
[2023-11-29 05:31:16,509 INFO  L276                IsEmpty]: Start isEmpty. Operand 52131 states and 86832 transitions.
[2023-11-29 05:31:16,746 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2939
[2023-11-29 05:31:16,747 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:31:16,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:31:16,807 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2023-11-29 05:31:16,962 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2023-11-29 05:31:16,962 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:31:16,963 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:31:16,963 INFO  L85        PathProgramCache]: Analyzing trace with hash -1784032583, now seen corresponding path program 1 times
[2023-11-29 05:31:16,963 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:31:16,963 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855719687]
[2023-11-29 05:31:16,963 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:31:16,964 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:31:17,285 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:31:17,285 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29175065]
[2023-11-29 05:31:17,286 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:31:17,286 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:31:17,286 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:31:17,287 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:31:17,288 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-11-29 05:31:19,979 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:31:20,046 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13045 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 05:31:20,074 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:31:24,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:31:24,834 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:31:24,834 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:31:24,834 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855719687]
[2023-11-29 05:31:24,834 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:31:24,834 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29175065]
[2023-11-29 05:31:24,834 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [29175065] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:31:24,834 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:31:24,835 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 05:31:24,835 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925143728]
[2023-11-29 05:31:24,835 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:31:24,836 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:31:24,837 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:31:24,838 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:31:24,838 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:31:24,839 INFO  L87              Difference]: Start difference. First operand 52131 states and 86832 transitions. Second operand  has 6 states, 6 states have (on average 489.6666666666667) internal successors, (2938), 6 states have internal predecessors, (2938), 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)
[2023-11-29 05:31:28,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:31:28,418 INFO  L93              Difference]: Finished difference Result 131106 states and 218417 transitions.
[2023-11-29 05:31:28,418 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:31:28,419 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 489.6666666666667) internal successors, (2938), 6 states have internal predecessors, (2938), 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 2938
[2023-11-29 05:31:28,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:31:28,472 INFO  L225             Difference]: With dead ends: 131106
[2023-11-29 05:31:28,472 INFO  L226             Difference]: Without dead ends: 83927
[2023-11-29 05:31:28,501 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2939 GetRequests, 2933 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:31:28,502 INFO  L413           NwaCegarLoop]: 5821 mSDtfsCounter, 8168 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8168 SdHoareTripleChecker+Valid, 23262 SdHoareTripleChecker+Invalid, 5370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-11-29 05:31:28,502 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8168 Valid, 23262 Invalid, 5370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-11-29 05:31:28,551 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 83927 states.
[2023-11-29 05:31:29,135 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 83927 to 67523.
[2023-11-29 05:31:29,168 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 67523 states, 67522 states have (on average 1.665827434021504) internal successors, (112480), 67522 states have internal predecessors, (112480), 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)
[2023-11-29 05:31:29,239 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67523 states to 67523 states and 112480 transitions.
[2023-11-29 05:31:29,239 INFO  L78                 Accepts]: Start accepts. Automaton has 67523 states and 112480 transitions. Word has length 2938
[2023-11-29 05:31:29,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:31:29,240 INFO  L495      AbstractCegarLoop]: Abstraction has 67523 states and 112480 transitions.
[2023-11-29 05:31:29,241 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 489.6666666666667) internal successors, (2938), 6 states have internal predecessors, (2938), 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)
[2023-11-29 05:31:29,241 INFO  L276                IsEmpty]: Start isEmpty. Operand 67523 states and 112480 transitions.
[2023-11-29 05:31:29,282 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2940
[2023-11-29 05:31:29,282 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:31:29,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:31:29,313 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0
[2023-11-29 05:31:29,483 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-11-29 05:31:29,484 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:31:29,484 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:31:29,485 INFO  L85        PathProgramCache]: Analyzing trace with hash -641232627, now seen corresponding path program 1 times
[2023-11-29 05:31:29,485 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:31:29,485 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32226612]
[2023-11-29 05:31:29,485 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:31:29,486 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:31:29,841 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:31:29,841 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380825361]
[2023-11-29 05:31:29,842 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:31:29,842 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:31:29,842 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:31:29,843 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:31:29,845 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-11-29 05:31:32,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:31:32,765 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13043 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 05:31:32,794 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:31:38,101 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:31:38,101 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:31:38,101 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:31:38,101 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32226612]
[2023-11-29 05:31:38,101 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:31:38,101 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380825361]
[2023-11-29 05:31:38,101 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380825361] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:31:38,102 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:31:38,102 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:31:38,103 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320613576]
[2023-11-29 05:31:38,103 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:31:38,105 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:31:38,105 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:31:38,107 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:31:38,107 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:31:38,108 INFO  L87              Difference]: Start difference. First operand 67523 states and 112480 transitions. Second operand  has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 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)
[2023-11-29 05:31:45,802 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:31:45,802 INFO  L93              Difference]: Finished difference Result 229183 states and 381810 transitions.
[2023-11-29 05:31:45,803 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:31:45,803 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 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 2939
[2023-11-29 05:31:45,805 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:31:45,913 INFO  L225             Difference]: With dead ends: 229183
[2023-11-29 05:31:45,913 INFO  L226             Difference]: Without dead ends: 166612
[2023-11-29 05:31:45,960 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2944 GetRequests, 2933 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:31:45,961 INFO  L413           NwaCegarLoop]: 13155 mSDtfsCounter, 18900 mSDsluCounter, 44416 mSDsCounter, 0 mSdLazyCounter, 11538 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18900 SdHoareTripleChecker+Valid, 57571 SdHoareTripleChecker+Invalid, 11541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-11-29 05:31:45,961 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18900 Valid, 57571 Invalid, 11541 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 11538 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-11-29 05:31:46,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 166612 states.
[2023-11-29 05:31:47,142 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 166612 to 82929.
[2023-11-29 05:31:47,192 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82929 states, 82928 states have (on average 1.665854717345167) internal successors, (138146), 82928 states have internal predecessors, (138146), 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)
[2023-11-29 05:31:47,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82929 states to 82929 states and 138146 transitions.
[2023-11-29 05:31:47,321 INFO  L78                 Accepts]: Start accepts. Automaton has 82929 states and 138146 transitions. Word has length 2939
[2023-11-29 05:31:47,323 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:31:47,323 INFO  L495      AbstractCegarLoop]: Abstraction has 82929 states and 138146 transitions.
[2023-11-29 05:31:47,324 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 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)
[2023-11-29 05:31:47,324 INFO  L276                IsEmpty]: Start isEmpty. Operand 82929 states and 138146 transitions.
[2023-11-29 05:31:47,529 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2940
[2023-11-29 05:31:47,529 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:31:47,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:31:47,570 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2023-11-29 05:31:47,741 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:31:47,742 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:31:47,742 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:31:47,743 INFO  L85        PathProgramCache]: Analyzing trace with hash -1768474611, now seen corresponding path program 1 times
[2023-11-29 05:31:47,743 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:31:47,743 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797480650]
[2023-11-29 05:31:47,743 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:31:47,743 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:31:48,020 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:31:48,020 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941906137]
[2023-11-29 05:31:48,021 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:31:48,021 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:31:48,021 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:31:48,021 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:31:48,022 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-11-29 05:31:50,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:31:50,842 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13047 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 05:31:50,884 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:31:56,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:31:56,322 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:31:56,322 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:31:56,322 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797480650]
[2023-11-29 05:31:56,322 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:31:56,322 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941906137]
[2023-11-29 05:31:56,322 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941906137] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:31:56,322 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:31:56,323 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:31:56,323 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895775121]
[2023-11-29 05:31:56,323 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:31:56,324 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:31:56,324 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:31:56,326 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:31:56,326 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:31:56,327 INFO  L87              Difference]: Start difference. First operand 82929 states and 138146 transitions. Second operand  has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 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)
[2023-11-29 05:32:04,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:32:04,318 INFO  L93              Difference]: Finished difference Result 275485 states and 458932 transitions.
[2023-11-29 05:32:04,319 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:32:04,319 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 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 2939
[2023-11-29 05:32:04,321 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:32:04,459 INFO  L225             Difference]: With dead ends: 275485
[2023-11-29 05:32:04,459 INFO  L226             Difference]: Without dead ends: 197508
[2023-11-29 05:32:04,511 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2944 GetRequests, 2933 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:32:04,512 INFO  L413           NwaCegarLoop]: 13153 mSDtfsCounter, 18958 mSDsluCounter, 44413 mSDsCounter, 0 mSdLazyCounter, 11550 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18958 SdHoareTripleChecker+Valid, 57566 SdHoareTripleChecker+Invalid, 11553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:32:04,512 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18958 Valid, 57566 Invalid, 11553 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 11550 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2023-11-29 05:32:04,620 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 197508 states.
[2023-11-29 05:32:05,660 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 197508 to 67535.
[2023-11-29 05:32:05,695 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 67535 states, 67534 states have (on average 1.6657683537181271) internal successors, (112496), 67534 states have internal predecessors, (112496), 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)
[2023-11-29 05:32:05,767 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67535 states to 67535 states and 112496 transitions.
[2023-11-29 05:32:05,767 INFO  L78                 Accepts]: Start accepts. Automaton has 67535 states and 112496 transitions. Word has length 2939
[2023-11-29 05:32:05,768 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:32:05,769 INFO  L495      AbstractCegarLoop]: Abstraction has 67535 states and 112496 transitions.
[2023-11-29 05:32:05,769 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 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)
[2023-11-29 05:32:05,769 INFO  L276                IsEmpty]: Start isEmpty. Operand 67535 states and 112496 transitions.
[2023-11-29 05:32:05,810 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2940
[2023-11-29 05:32:05,810 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:32:05,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:32:05,842 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0
[2023-11-29 05:32:06,011 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41
[2023-11-29 05:32:06,012 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:32:06,012 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:32:06,012 INFO  L85        PathProgramCache]: Analyzing trace with hash -679448049, now seen corresponding path program 1 times
[2023-11-29 05:32:06,012 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:32:06,012 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146549804]
[2023-11-29 05:32:06,013 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:06,013 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:32:06,304 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:32:06,304 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500516182]
[2023-11-29 05:32:06,305 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:06,305 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:06,305 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:32:06,306 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:32:06,306 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-11-29 05:32:09,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:32:09,234 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13048 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-29 05:32:09,277 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:32:12,004 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:32:12,004 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:32:12,004 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:32:12,004 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146549804]
[2023-11-29 05:32:12,004 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:32:12,004 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500516182]
[2023-11-29 05:32:12,004 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [500516182] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:32:12,004 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:32:12,005 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:32:12,005 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406801599]
[2023-11-29 05:32:12,005 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:32:12,007 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:32:12,008 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:32:12,009 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:32:12,009 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:32:12,010 INFO  L87              Difference]: Start difference. First operand 67535 states and 112496 transitions. Second operand  has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 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)
[2023-11-29 05:32:19,492 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:32:19,492 INFO  L93              Difference]: Finished difference Result 198431 states and 330558 transitions.
[2023-11-29 05:32:19,493 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:32:19,493 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 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 2939
[2023-11-29 05:32:19,495 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:32:19,570 INFO  L225             Difference]: With dead ends: 198431
[2023-11-29 05:32:19,570 INFO  L226             Difference]: Without dead ends: 135848
[2023-11-29 05:32:19,592 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2944 GetRequests, 2933 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:32:19,593 INFO  L413           NwaCegarLoop]: 13157 mSDtfsCounter, 12613 mSDsluCounter, 44419 mSDsCounter, 0 mSdLazyCounter, 11505 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12613 SdHoareTripleChecker+Valid, 57576 SdHoareTripleChecker+Invalid, 11508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2023-11-29 05:32:19,593 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12613 Valid, 57576 Invalid, 11508 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 11505 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2023-11-29 05:32:19,657 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 135848 states.
[2023-11-29 05:32:20,388 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 135848 to 67535.
[2023-11-29 05:32:20,423 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 67535 states, 67534 states have (on average 1.6657683537181271) internal successors, (112496), 67534 states have internal predecessors, (112496), 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)
[2023-11-29 05:32:20,494 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67535 states to 67535 states and 112496 transitions.
[2023-11-29 05:32:20,495 INFO  L78                 Accepts]: Start accepts. Automaton has 67535 states and 112496 transitions. Word has length 2939
[2023-11-29 05:32:20,496 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:32:20,496 INFO  L495      AbstractCegarLoop]: Abstraction has 67535 states and 112496 transitions.
[2023-11-29 05:32:20,497 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 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)
[2023-11-29 05:32:20,497 INFO  L276                IsEmpty]: Start isEmpty. Operand 67535 states and 112496 transitions.
[2023-11-29 05:32:20,679 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2940
[2023-11-29 05:32:20,679 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:32:20,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:32:20,710 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0
[2023-11-29 05:32:20,880 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:20,880 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:32:20,880 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:32:20,881 INFO  L85        PathProgramCache]: Analyzing trace with hash -819523823, now seen corresponding path program 1 times
[2023-11-29 05:32:20,881 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:32:20,881 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347124829]
[2023-11-29 05:32:20,882 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:20,882 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:32:21,155 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:32:21,155 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905827227]
[2023-11-29 05:32:21,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:21,155 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:21,156 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:32:21,156 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:32:21,157 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-11-29 05:32:24,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:32:24,110 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13049 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 05:32:24,137 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:32:29,067 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:32:29,068 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:32:29,068 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:32:29,068 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347124829]
[2023-11-29 05:32:29,068 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:32:29,068 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905827227]
[2023-11-29 05:32:29,068 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [905827227] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:32:29,068 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:32:29,069 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 05:32:29,069 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226702880]
[2023-11-29 05:32:29,069 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:32:29,071 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:32:29,071 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:32:29,073 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:32:29,073 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:32:29,074 INFO  L87              Difference]: Start difference. First operand 67535 states and 112496 transitions. Second operand  has 6 states, 6 states have (on average 489.8333333333333) internal successors, (2939), 6 states have internal predecessors, (2939), 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)
[2023-11-29 05:32:32,637 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:32:32,637 INFO  L93              Difference]: Finished difference Result 146534 states and 244111 transitions.
[2023-11-29 05:32:32,637 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:32:32,638 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 489.8333333333333) internal successors, (2939), 6 states have internal predecessors, (2939), 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 2939
[2023-11-29 05:32:32,639 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:32:32,683 INFO  L225             Difference]: With dead ends: 146534
[2023-11-29 05:32:32,683 INFO  L226             Difference]: Without dead ends: 83951
[2023-11-29 05:32:32,699 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2940 GetRequests, 2934 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:32:32,700 INFO  L413           NwaCegarLoop]: 5821 mSDtfsCounter, 8161 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8161 SdHoareTripleChecker+Valid, 23262 SdHoareTripleChecker+Invalid, 5370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:32:32,700 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8161 Valid, 23262 Invalid, 5370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 05:32:32,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 83951 states.
[2023-11-29 05:32:33,210 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 83951 to 67547.
[2023-11-29 05:32:33,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 67547 states, 67546 states have (on average 1.6657389038581114) internal successors, (112514), 67546 states have internal predecessors, (112514), 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)
[2023-11-29 05:32:33,325 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67547 states to 67547 states and 112514 transitions.
[2023-11-29 05:32:33,325 INFO  L78                 Accepts]: Start accepts. Automaton has 67547 states and 112514 transitions. Word has length 2939
[2023-11-29 05:32:33,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:32:33,470 INFO  L495      AbstractCegarLoop]: Abstraction has 67547 states and 112514 transitions.
[2023-11-29 05:32:33,471 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 489.8333333333333) internal successors, (2939), 6 states have internal predecessors, (2939), 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)
[2023-11-29 05:32:33,471 INFO  L276                IsEmpty]: Start isEmpty. Operand 67547 states and 112514 transitions.
[2023-11-29 05:32:33,532 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2941
[2023-11-29 05:32:33,532 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:32:33,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:32:33,563 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0
[2023-11-29 05:32:33,733 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:33,734 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:32:33,734 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:32:33,735 INFO  L85        PathProgramCache]: Analyzing trace with hash 2100625031, now seen corresponding path program 1 times
[2023-11-29 05:32:33,735 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:32:33,735 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751945728]
[2023-11-29 05:32:33,735 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:33,735 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:32:34,028 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:32:34,028 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300383938]
[2023-11-29 05:32:34,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:34,029 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:34,029 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:32:34,030 INFO  L229       MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:32:34,031 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2023-11-29 05:32:36,710 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:32:36,782 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13046 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 05:32:36,810 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:32:40,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:32:40,210 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:32:40,210 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:32:40,210 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751945728]
[2023-11-29 05:32:40,210 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:32:40,210 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300383938]
[2023-11-29 05:32:40,211 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [300383938] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:32:40,211 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:32:40,211 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:32:40,211 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494313015]
[2023-11-29 05:32:40,211 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:32:40,213 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:32:40,213 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:32:40,215 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:32:40,215 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:32:40,216 INFO  L87              Difference]: Start difference. First operand 67547 states and 112514 transitions. Second operand  has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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)
[2023-11-29 05:32:49,284 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:32:49,284 INFO  L93              Difference]: Finished difference Result 289845 states and 482818 transitions.
[2023-11-29 05:32:49,284 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:32:49,285 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 2940
[2023-11-29 05:32:49,286 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:32:49,438 INFO  L225             Difference]: With dead ends: 289845
[2023-11-29 05:32:49,438 INFO  L226             Difference]: Without dead ends: 220648
[2023-11-29 05:32:49,468 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2945 GetRequests, 2934 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:32:49,469 INFO  L413           NwaCegarLoop]: 17645 mSDtfsCounter, 21073 mSDsluCounter, 55641 mSDsCounter, 0 mSdLazyCounter, 12735 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21073 SdHoareTripleChecker+Valid, 73286 SdHoareTripleChecker+Invalid, 12738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:32:49,469 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21073 Valid, 73286 Invalid, 12738 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 12735 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time]
[2023-11-29 05:32:49,738 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 220648 states.
[2023-11-29 05:32:51,067 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 220648 to 78799.
[2023-11-29 05:32:51,100 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 78799 states, 78798 states have (on average 1.665727556536968) internal successors, (131256), 78798 states have internal predecessors, (131256), 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)
[2023-11-29 05:32:51,181 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78799 states to 78799 states and 131256 transitions.
[2023-11-29 05:32:51,182 INFO  L78                 Accepts]: Start accepts. Automaton has 78799 states and 131256 transitions. Word has length 2940
[2023-11-29 05:32:51,182 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:32:51,182 INFO  L495      AbstractCegarLoop]: Abstraction has 78799 states and 131256 transitions.
[2023-11-29 05:32:51,183 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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)
[2023-11-29 05:32:51,183 INFO  L276                IsEmpty]: Start isEmpty. Operand 78799 states and 131256 transitions.
[2023-11-29 05:32:51,224 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2942
[2023-11-29 05:32:51,224 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:32:51,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:32:51,257 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0
[2023-11-29 05:32:51,425 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:51,426 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:32:51,426 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:32:51,427 INFO  L85        PathProgramCache]: Analyzing trace with hash -2091861549, now seen corresponding path program 1 times
[2023-11-29 05:32:51,427 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:32:51,427 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34556371]
[2023-11-29 05:32:51,428 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:51,428 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:32:51,809 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:32:51,809 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937651390]
[2023-11-29 05:32:51,810 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:51,810 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:51,810 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:32:51,811 INFO  L229       MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:32:51,812 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2023-11-29 05:32:55,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:32:55,366 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13049 conjuncts, 31 conjunts are in the unsatisfiable core
[2023-11-29 05:32:55,402 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:33:01,384 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:33:01,384 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:33:01,384 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:33:01,384 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34556371]
[2023-11-29 05:33:01,384 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:33:01,385 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937651390]
[2023-11-29 05:33:01,385 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937651390] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:33:01,385 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:33:01,386 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-11-29 05:33:01,386 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945915225]
[2023-11-29 05:33:01,386 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:33:01,387 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-29 05:33:01,388 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:33:01,389 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-29 05:33:01,389 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2023-11-29 05:33:01,390 INFO  L87              Difference]: Start difference. First operand 78799 states and 131256 transitions. Second operand  has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 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)
[2023-11-29 05:33:10,504 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:33:10,505 INFO  L93              Difference]: Finished difference Result 188872 states and 314509 transitions.
[2023-11-29 05:33:10,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-11-29 05:33:10,505 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 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 2941
[2023-11-29 05:33:10,506 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:33:10,595 INFO  L225             Difference]: With dead ends: 188872
[2023-11-29 05:33:10,595 INFO  L226             Difference]: Without dead ends: 115025
[2023-11-29 05:33:10,640 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2954 GetRequests, 2930 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650
[2023-11-29 05:33:10,640 INFO  L413           NwaCegarLoop]: 16115 mSDtfsCounter, 75711 mSDsluCounter, 80825 mSDsCounter, 0 mSdLazyCounter, 12669 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75711 SdHoareTripleChecker+Valid, 96940 SdHoareTripleChecker+Invalid, 12724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 12669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2023-11-29 05:33:10,641 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [75711 Valid, 96940 Invalid, 12724 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [55 Valid, 12669 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2023-11-29 05:33:10,731 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115025 states.
[2023-11-29 05:33:11,736 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115025 to 82902.
[2023-11-29 05:33:11,797 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82902 states, 82901 states have (on average 1.665552888384941) internal successors, (138076), 82901 states have internal predecessors, (138076), 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)
[2023-11-29 05:33:11,934 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82902 states to 82902 states and 138076 transitions.
[2023-11-29 05:33:11,935 INFO  L78                 Accepts]: Start accepts. Automaton has 82902 states and 138076 transitions. Word has length 2941
[2023-11-29 05:33:11,936 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:33:11,936 INFO  L495      AbstractCegarLoop]: Abstraction has 82902 states and 138076 transitions.
[2023-11-29 05:33:11,937 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 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)
[2023-11-29 05:33:11,937 INFO  L276                IsEmpty]: Start isEmpty. Operand 82902 states and 138076 transitions.
[2023-11-29 05:33:12,039 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2942
[2023-11-29 05:33:12,039 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:33:12,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:33:12,081 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0
[2023-11-29 05:33:12,240 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:33:12,241 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:33:12,241 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:33:12,241 INFO  L85        PathProgramCache]: Analyzing trace with hash 383486865, now seen corresponding path program 1 times
[2023-11-29 05:33:12,242 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:33:12,242 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504886930]
[2023-11-29 05:33:12,242 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:33:12,242 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:33:12,697 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:33:12,698 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492790384]
[2023-11-29 05:33:12,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:33:12,699 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:33:12,699 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:33:12,700 INFO  L229       MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:33:12,700 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2023-11-29 05:33:15,726 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:33:15,804 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13050 conjuncts, 31 conjunts are in the unsatisfiable core
[2023-11-29 05:33:15,837 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:33:22,111 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:33:22,112 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:33:22,112 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:33:22,112 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504886930]
[2023-11-29 05:33:22,112 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:33:22,112 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492790384]
[2023-11-29 05:33:22,112 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492790384] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:33:22,112 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:33:22,113 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2023-11-29 05:33:22,114 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219117955]
[2023-11-29 05:33:22,114 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:33:22,115 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-29 05:33:22,115 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:33:22,117 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-29 05:33:22,117 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:33:22,118 INFO  L87              Difference]: Start difference. First operand 82902 states and 138076 transitions. Second operand  has 13 states, 13 states have (on average 226.23076923076923) internal successors, (2941), 12 states have internal predecessors, (2941), 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)
[2023-11-29 05:33:31,368 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:33:31,368 INFO  L93              Difference]: Finished difference Result 185922 states and 309609 transitions.
[2023-11-29 05:33:31,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2023-11-29 05:33:31,369 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 226.23076923076923) internal successors, (2941), 12 states have internal predecessors, (2941), 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 2941
[2023-11-29 05:33:31,370 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:33:31,439 INFO  L225             Difference]: With dead ends: 185922
[2023-11-29 05:33:31,439 INFO  L226             Difference]: Without dead ends: 112075
[2023-11-29 05:33:31,476 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2951 GetRequests, 2929 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552
[2023-11-29 05:33:31,476 INFO  L413           NwaCegarLoop]: 13559 mSDtfsCounter, 58717 mSDsluCounter, 81501 mSDsCounter, 0 mSdLazyCounter, 12885 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58717 SdHoareTripleChecker+Valid, 95060 SdHoareTripleChecker+Invalid, 12940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 12885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time
[2023-11-29 05:33:31,476 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [58717 Valid, 95060 Invalid, 12940 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [55 Valid, 12885 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time]
[2023-11-29 05:33:31,537 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112075 states.
[2023-11-29 05:33:32,468 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112075 to 82902.
[2023-11-29 05:33:32,524 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82902 states, 82901 states have (on average 1.665552888384941) internal successors, (138076), 82901 states have internal predecessors, (138076), 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)
[2023-11-29 05:33:32,652 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82902 states to 82902 states and 138076 transitions.
[2023-11-29 05:33:32,653 INFO  L78                 Accepts]: Start accepts. Automaton has 82902 states and 138076 transitions. Word has length 2941
[2023-11-29 05:33:32,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:33:32,654 INFO  L495      AbstractCegarLoop]: Abstraction has 82902 states and 138076 transitions.
[2023-11-29 05:33:32,655 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 226.23076923076923) internal successors, (2941), 12 states have internal predecessors, (2941), 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)
[2023-11-29 05:33:32,655 INFO  L276                IsEmpty]: Start isEmpty. Operand 82902 states and 138076 transitions.
[2023-11-29 05:33:32,763 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2942
[2023-11-29 05:33:32,763 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:33:32,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:33:32,800 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0
[2023-11-29 05:33:32,965 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:33:32,965 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:33:32,966 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:33:32,966 INFO  L85        PathProgramCache]: Analyzing trace with hash -997752557, now seen corresponding path program 1 times
[2023-11-29 05:33:32,966 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:33:32,967 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857031474]
[2023-11-29 05:33:32,967 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:33:32,967 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:33:33,363 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:33:33,363 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599593320]
[2023-11-29 05:33:33,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:33:33,364 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:33:33,364 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:33:33,365 INFO  L229       MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:33:33,366 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2023-11-29 05:33:36,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:33:36,449 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13051 conjuncts, 33 conjunts are in the unsatisfiable core
[2023-11-29 05:33:36,485 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:33:42,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:33:42,365 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:33:42,365 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:33:42,365 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857031474]
[2023-11-29 05:33:42,365 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:33:42,365 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599593320]
[2023-11-29 05:33:42,365 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [599593320] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:33:42,365 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:33:42,366 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-11-29 05:33:42,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654671038]
[2023-11-29 05:33:42,366 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:33:42,368 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-29 05:33:42,368 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:33:42,369 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-29 05:33:42,369 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2023-11-29 05:33:42,369 INFO  L87              Difference]: Start difference. First operand 82902 states and 138076 transitions. Second operand  has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 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)
[2023-11-29 05:33:51,064 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:33:51,064 INFO  L93              Difference]: Finished difference Result 194596 states and 324041 transitions.
[2023-11-29 05:33:51,064 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-11-29 05:33:51,065 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 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 2941
[2023-11-29 05:33:51,066 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:33:51,139 INFO  L225             Difference]: With dead ends: 194596
[2023-11-29 05:33:51,139 INFO  L226             Difference]: Without dead ends: 120749
[2023-11-29 05:33:51,177 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2954 GetRequests, 2930 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650
[2023-11-29 05:33:51,178 INFO  L413           NwaCegarLoop]: 16115 mSDtfsCounter, 75573 mSDsluCounter, 81019 mSDsCounter, 0 mSdLazyCounter, 12464 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75573 SdHoareTripleChecker+Valid, 97134 SdHoareTripleChecker+Invalid, 12519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 12464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2023-11-29 05:33:51,178 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [75573 Valid, 97134 Invalid, 12519 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [55 Valid, 12464 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time]
[2023-11-29 05:33:51,244 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 120749 states.
[2023-11-29 05:33:52,104 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 120749 to 82914.
[2023-11-29 05:33:52,161 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82914 states, 82913 states have (on average 1.665540988747241) internal successors, (138095), 82913 states have internal predecessors, (138095), 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)
[2023-11-29 05:33:52,292 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82914 states to 82914 states and 138095 transitions.
[2023-11-29 05:33:52,292 INFO  L78                 Accepts]: Start accepts. Automaton has 82914 states and 138095 transitions. Word has length 2941
[2023-11-29 05:33:52,293 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:33:52,294 INFO  L495      AbstractCegarLoop]: Abstraction has 82914 states and 138095 transitions.
[2023-11-29 05:33:52,294 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 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)
[2023-11-29 05:33:52,294 INFO  L276                IsEmpty]: Start isEmpty. Operand 82914 states and 138095 transitions.
[2023-11-29 05:33:52,342 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2942
[2023-11-29 05:33:52,342 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:33:52,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:33:52,386 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0
[2023-11-29 05:33:52,543 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47
[2023-11-29 05:33:52,543 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:33:52,543 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:33:52,544 INFO  L85        PathProgramCache]: Analyzing trace with hash 930881941, now seen corresponding path program 1 times
[2023-11-29 05:33:52,544 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:33:52,544 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172320471]
[2023-11-29 05:33:52,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:33:52,545 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:33:52,897 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:33:52,897 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275879739]
[2023-11-29 05:33:52,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:33:52,898 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:33:52,898 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:33:52,899 INFO  L229       MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:33:52,900 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2023-11-29 05:33:55,943 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:33:56,022 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13052 conjuncts, 33 conjunts are in the unsatisfiable core
[2023-11-29 05:33:56,055 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:34:04,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:34:04,543 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:34:04,543 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:34:04,543 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172320471]
[2023-11-29 05:34:04,544 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:34:04,544 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275879739]
[2023-11-29 05:34:04,544 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275879739] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:34:04,544 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:34:04,545 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-29 05:34:04,545 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567096006]
[2023-11-29 05:34:04,545 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:34:04,546 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-29 05:34:04,546 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:34:04,548 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-29 05:34:04,548 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:34:04,548 INFO  L87              Difference]: Start difference. First operand 82914 states and 138095 transitions. Second operand  has 10 states, 10 states have (on average 294.1) internal successors, (2941), 9 states have internal predecessors, (2941), 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)
[2023-11-29 05:34:11,201 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:34:11,201 INFO  L93              Difference]: Finished difference Result 180997 states and 301420 transitions.
[2023-11-29 05:34:11,202 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:34:11,202 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 294.1) internal successors, (2941), 9 states have internal predecessors, (2941), 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 2941
[2023-11-29 05:34:11,203 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:34:11,299 INFO  L225             Difference]: With dead ends: 180997
[2023-11-29 05:34:11,299 INFO  L226             Difference]: Without dead ends: 107150
[2023-11-29 05:34:11,338 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2947 GetRequests, 2932 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272
[2023-11-29 05:34:11,339 INFO  L413           NwaCegarLoop]: 11003 mSDtfsCounter, 51926 mSDsluCounter, 47449 mSDsCounter, 0 mSdLazyCounter, 8594 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51926 SdHoareTripleChecker+Valid, 58452 SdHoareTripleChecker+Invalid, 8648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 8594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:34:11,339 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [51926 Valid, 58452 Invalid, 8648 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [54 Valid, 8594 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-11-29 05:34:11,406 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107150 states.
[2023-11-29 05:34:12,333 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107150 to 85814.
[2023-11-29 05:34:12,368 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85814 states, 85813 states have (on average 1.665551839464883) internal successors, (142926), 85813 states have internal predecessors, (142926), 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)
[2023-11-29 05:34:12,468 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85814 states to 85814 states and 142926 transitions.
[2023-11-29 05:34:12,469 INFO  L78                 Accepts]: Start accepts. Automaton has 85814 states and 142926 transitions. Word has length 2941
[2023-11-29 05:34:12,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:34:12,470 INFO  L495      AbstractCegarLoop]: Abstraction has 85814 states and 142926 transitions.
[2023-11-29 05:34:12,471 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 294.1) internal successors, (2941), 9 states have internal predecessors, (2941), 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)
[2023-11-29 05:34:12,471 INFO  L276                IsEmpty]: Start isEmpty. Operand 85814 states and 142926 transitions.
[2023-11-29 05:34:12,525 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2943
[2023-11-29 05:34:12,525 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:34:12,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:34:12,567 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0
[2023-11-29 05:34:12,726 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:34:12,727 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:34:12,727 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:34:12,728 INFO  L85        PathProgramCache]: Analyzing trace with hash -171237449, now seen corresponding path program 1 times
[2023-11-29 05:34:12,728 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:34:12,728 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267031474]
[2023-11-29 05:34:12,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:34:12,728 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:34:13,084 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:34:13,084 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330681008]
[2023-11-29 05:34:13,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:34:13,084 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:34:13,085 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:34:13,085 INFO  L229       MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:34:13,086 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2023-11-29 05:34:15,945 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:34:16,017 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13052 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-11-29 05:34:16,045 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:34:20,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:34:20,110 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:34:20,110 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:34:20,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267031474]
[2023-11-29 05:34:20,110 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:34:20,111 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330681008]
[2023-11-29 05:34:20,111 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [330681008] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:34:20,111 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:34:20,112 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:34:20,112 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533701626]
[2023-11-29 05:34:20,112 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:34:20,113 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:34:20,114 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:34:20,115 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:34:20,115 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:34:20,116 INFO  L87              Difference]: Start difference. First operand 85814 states and 142926 transitions. Second operand  has 7 states, 7 states have (on average 420.2857142857143) internal successors, (2942), 7 states have internal predecessors, (2942), 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)
[2023-11-29 05:34:29,043 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:34:29,043 INFO  L93              Difference]: Finished difference Result 392216 states and 653304 transitions.
[2023-11-29 05:34:29,044 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 05:34:29,044 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 420.2857142857143) internal successors, (2942), 7 states have internal predecessors, (2942), 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 2942
[2023-11-29 05:34:29,045 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:34:29,253 INFO  L225             Difference]: With dead ends: 392216
[2023-11-29 05:34:29,253 INFO  L226             Difference]: Without dead ends: 308179
[2023-11-29 05:34:29,299 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2947 GetRequests, 2936 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:34:29,300 INFO  L413           NwaCegarLoop]: 11528 mSDtfsCounter, 22169 mSDsluCounter, 40348 mSDsCounter, 0 mSdLazyCounter, 11356 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22169 SdHoareTripleChecker+Valid, 51876 SdHoareTripleChecker+Invalid, 11359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2023-11-29 05:34:29,300 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22169 Valid, 51876 Invalid, 11359 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 11356 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2023-11-29 05:34:29,461 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 308179 states.
[2023-11-29 05:34:31,328 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 308179 to 121394.
[2023-11-29 05:34:31,398 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 121394 states, 121393 states have (on average 1.6657797401827124) internal successors, (202214), 121393 states have internal predecessors, (202214), 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)
[2023-11-29 05:34:31,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121394 states to 121394 states and 202214 transitions.
[2023-11-29 05:34:31,530 INFO  L78                 Accepts]: Start accepts. Automaton has 121394 states and 202214 transitions. Word has length 2942
[2023-11-29 05:34:31,531 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:34:31,531 INFO  L495      AbstractCegarLoop]: Abstraction has 121394 states and 202214 transitions.
[2023-11-29 05:34:31,532 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 420.2857142857143) internal successors, (2942), 7 states have internal predecessors, (2942), 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)
[2023-11-29 05:34:31,532 INFO  L276                IsEmpty]: Start isEmpty. Operand 121394 states and 202214 transitions.
[2023-11-29 05:34:31,769 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2943
[2023-11-29 05:34:31,770 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:34:31,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:34:31,806 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0
[2023-11-29 05:34:31,971 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:34:31,971 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:34:31,972 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:34:31,972 INFO  L85        PathProgramCache]: Analyzing trace with hash 1543976765, now seen corresponding path program 1 times
[2023-11-29 05:34:31,972 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:34:31,972 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019376580]
[2023-11-29 05:34:31,972 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:34:31,973 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:34:32,202 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:34:32,202 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398251258]
[2023-11-29 05:34:32,203 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:34:32,204 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:34:32,204 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:34:32,204 INFO  L229       MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:34:32,205 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2023-11-29 05:34:35,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:34:35,318 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13052 conjuncts, 33 conjunts are in the unsatisfiable core
[2023-11-29 05:34:35,353 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:34:41,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:34:41,952 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:34:41,952 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:34:41,952 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019376580]
[2023-11-29 05:34:41,952 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:34:41,952 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398251258]
[2023-11-29 05:34:41,952 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398251258] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:34:41,952 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:34:41,953 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2023-11-29 05:34:41,953 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025669582]
[2023-11-29 05:34:41,954 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:34:41,955 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-29 05:34:41,955 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:34:41,957 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-29 05:34:41,957 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:34:41,958 INFO  L87              Difference]: Start difference. First operand 121394 states and 202214 transitions. Second operand  has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 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)
[2023-11-29 05:34:53,536 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:34:53,536 INFO  L93              Difference]: Finished difference Result 260416 states and 433752 transitions.
[2023-11-29 05:34:53,536 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-11-29 05:34:53,537 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 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 2942
[2023-11-29 05:34:53,538 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:34:53,614 INFO  L225             Difference]: With dead ends: 260416
[2023-11-29 05:34:53,614 INFO  L226             Difference]: Without dead ends: 151081
[2023-11-29 05:34:53,637 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2951 GetRequests, 2930 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506
[2023-11-29 05:34:53,638 INFO  L413           NwaCegarLoop]: 12003 mSDtfsCounter, 46234 mSDsluCounter, 73536 mSDsCounter, 0 mSdLazyCounter, 17439 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46234 SdHoareTripleChecker+Valid, 85539 SdHoareTripleChecker+Invalid, 17495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 17439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:34:53,638 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46234 Valid, 85539 Invalid, 17495 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [56 Valid, 17439 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time]
[2023-11-29 05:34:53,706 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 151081 states.
[2023-11-29 05:34:54,910 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 151081 to 126533.
[2023-11-29 05:34:54,980 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 126533 states, 126532 states have (on average 1.6656023772642494) internal successors, (210752), 126532 states have internal predecessors, (210752), 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)
[2023-11-29 05:34:55,187 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 126533 states to 126533 states and 210752 transitions.
[2023-11-29 05:34:55,188 INFO  L78                 Accepts]: Start accepts. Automaton has 126533 states and 210752 transitions. Word has length 2942
[2023-11-29 05:34:55,189 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:34:55,189 INFO  L495      AbstractCegarLoop]: Abstraction has 126533 states and 210752 transitions.
[2023-11-29 05:34:55,190 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 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)
[2023-11-29 05:34:55,190 INFO  L276                IsEmpty]: Start isEmpty. Operand 126533 states and 210752 transitions.
[2023-11-29 05:34:55,253 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2943
[2023-11-29 05:34:55,253 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:34:55,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:34:55,297 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0
[2023-11-29 05:34:55,455 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:34:55,455 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:34:55,455 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:34:55,456 INFO  L85        PathProgramCache]: Analyzing trace with hash 162737343, now seen corresponding path program 1 times
[2023-11-29 05:34:55,456 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:34:55,456 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99585275]
[2023-11-29 05:34:55,456 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:34:55,456 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:34:55,872 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:34:55,872 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829815968]
[2023-11-29 05:34:55,873 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:34:55,873 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:34:55,873 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:34:55,874 INFO  L229       MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:34:55,876 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2023-11-29 05:34:59,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:34:59,167 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13053 conjuncts, 33 conjunts are in the unsatisfiable core
[2023-11-29 05:34:59,201 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:35:05,345 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:35:05,345 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:35:05,345 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:35:05,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99585275]
[2023-11-29 05:35:05,345 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:35:05,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829815968]
[2023-11-29 05:35:05,345 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829815968] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:35:05,345 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:35:05,346 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-11-29 05:35:05,346 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573672747]
[2023-11-29 05:35:05,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:35:05,348 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-29 05:35:05,348 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:35:05,350 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-29 05:35:05,350 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2023-11-29 05:35:05,351 INFO  L87              Difference]: Start difference. First operand 126533 states and 210752 transitions. Second operand  has 12 states, 12 states have (on average 245.16666666666666) internal successors, (2942), 11 states have internal predecessors, (2942), 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)
[2023-11-29 05:35:19,262 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:35:19,262 INFO  L93              Difference]: Finished difference Result 286367 states and 476915 transitions.
[2023-11-29 05:35:19,263 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-11-29 05:35:19,263 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 245.16666666666666) internal successors, (2942), 11 states have internal predecessors, (2942), 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 2942
[2023-11-29 05:35:19,264 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:35:19,356 INFO  L225             Difference]: With dead ends: 286367
[2023-11-29 05:35:19,356 INFO  L226             Difference]: Without dead ends: 179804
[2023-11-29 05:35:19,387 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2955 GetRequests, 2931 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650
[2023-11-29 05:35:19,387 INFO  L413           NwaCegarLoop]: 19537 mSDtfsCounter, 54357 mSDsluCounter, 98678 mSDsCounter, 0 mSdLazyCounter, 21039 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54357 SdHoareTripleChecker+Valid, 118215 SdHoareTripleChecker+Invalid, 21095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 21039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time
[2023-11-29 05:35:19,388 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [54357 Valid, 118215 Invalid, 21095 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [56 Valid, 21039 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time]
[2023-11-29 05:35:19,470 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 179804 states.
[2023-11-29 05:35:20,654 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 179804 to 127322.
[2023-11-29 05:35:20,749 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 127322 states, 127321 states have (on average 1.6655461392857422) internal successors, (212059), 127321 states have internal predecessors, (212059), 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)
[2023-11-29 05:35:20,910 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 127322 states to 127322 states and 212059 transitions.
[2023-11-29 05:35:20,911 INFO  L78                 Accepts]: Start accepts. Automaton has 127322 states and 212059 transitions. Word has length 2942
[2023-11-29 05:35:20,912 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:35:20,912 INFO  L495      AbstractCegarLoop]: Abstraction has 127322 states and 212059 transitions.
[2023-11-29 05:35:20,913 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 245.16666666666666) internal successors, (2942), 11 states have internal predecessors, (2942), 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)
[2023-11-29 05:35:20,913 INFO  L276                IsEmpty]: Start isEmpty. Operand 127322 states and 212059 transitions.
[2023-11-29 05:35:21,248 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2943
[2023-11-29 05:35:21,248 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:35:21,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:35:21,298 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0
[2023-11-29 05:35:21,473 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:35:21,474 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:35:21,474 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:35:21,474 INFO  L85        PathProgramCache]: Analyzing trace with hash 2091371841, now seen corresponding path program 1 times
[2023-11-29 05:35:21,475 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:35:21,475 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065537350]
[2023-11-29 05:35:21,475 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:35:21,475 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:35:21,757 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:35:21,757 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726048326]
[2023-11-29 05:35:21,758 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:35:21,758 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:35:21,758 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:35:21,759 INFO  L229       MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:35:21,760 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2023-11-29 05:35:24,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:35:24,924 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13054 conjuncts, 33 conjunts are in the unsatisfiable core
[2023-11-29 05:35:24,955 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:35:31,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:35:31,061 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:35:31,062 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:35:31,062 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065537350]
[2023-11-29 05:35:31,062 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:35:31,062 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726048326]
[2023-11-29 05:35:31,062 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [726048326] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:35:31,062 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:35:31,063 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2023-11-29 05:35:31,063 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206272933]
[2023-11-29 05:35:31,063 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:35:31,065 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-29 05:35:31,065 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:35:31,066 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-29 05:35:31,066 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:35:31,067 INFO  L87              Difference]: Start difference. First operand 127322 states and 212059 transitions. Second operand  has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 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)
[2023-11-29 05:35:45,852 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:35:45,853 INFO  L93              Difference]: Finished difference Result 288583 states and 480595 transitions.
[2023-11-29 05:35:45,853 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-11-29 05:35:45,853 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 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 2942
[2023-11-29 05:35:45,854 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:35:45,968 INFO  L225             Difference]: With dead ends: 288583
[2023-11-29 05:35:45,969 INFO  L226             Difference]: Without dead ends: 182020
[2023-11-29 05:35:46,179 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2955 GetRequests, 2930 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702
[2023-11-29 05:35:46,179 INFO  L413           NwaCegarLoop]: 19537 mSDtfsCounter, 53910 mSDsluCounter, 115786 mSDsCounter, 0 mSdLazyCounter, 25696 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53910 SdHoareTripleChecker+Valid, 135323 SdHoareTripleChecker+Invalid, 25752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 25696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time
[2023-11-29 05:35:46,180 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [53910 Valid, 135323 Invalid, 25752 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [56 Valid, 25696 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time]
[2023-11-29 05:35:46,258 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 182020 states.
[2023-11-29 05:35:47,503 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 182020 to 127322.
[2023-11-29 05:35:47,584 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 127322 states, 127321 states have (on average 1.6655461392857422) internal successors, (212059), 127321 states have internal predecessors, (212059), 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)
[2023-11-29 05:35:47,725 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 127322 states to 127322 states and 212059 transitions.
[2023-11-29 05:35:47,725 INFO  L78                 Accepts]: Start accepts. Automaton has 127322 states and 212059 transitions. Word has length 2942
[2023-11-29 05:35:47,726 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:35:47,726 INFO  L495      AbstractCegarLoop]: Abstraction has 127322 states and 212059 transitions.
[2023-11-29 05:35:47,727 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 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)
[2023-11-29 05:35:47,727 INFO  L276                IsEmpty]: Start isEmpty. Operand 127322 states and 212059 transitions.
[2023-11-29 05:35:47,789 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2943
[2023-11-29 05:35:47,789 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:35:47,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:35:47,838 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0
[2023-11-29 05:35:47,990 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:35:47,991 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:35:47,991 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:35:47,992 INFO  L85        PathProgramCache]: Analyzing trace with hash 271752959, now seen corresponding path program 1 times
[2023-11-29 05:35:47,992 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:35:47,992 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633583120]
[2023-11-29 05:35:47,992 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:35:47,992 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:35:48,443 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:35:48,443 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209780152]
[2023-11-29 05:35:48,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:35:48,444 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:35:48,444 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:35:48,445 INFO  L229       MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:35:48,445 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2023-11-29 05:35:51,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:35:51,444 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13055 conjuncts, 35 conjunts are in the unsatisfiable core
[2023-11-29 05:35:51,485 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:35:59,190 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:35:59,190 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:35:59,190 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:35:59,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633583120]
[2023-11-29 05:35:59,190 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:35:59,191 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209780152]
[2023-11-29 05:35:59,191 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [209780152] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:35:59,191 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:35:59,191 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-29 05:35:59,191 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114761507]
[2023-11-29 05:35:59,191 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:35:59,193 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-29 05:35:59,193 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:35:59,194 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-29 05:35:59,194 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:35:59,195 INFO  L87              Difference]: Start difference. First operand 127322 states and 212059 transitions. Second operand  has 10 states, 10 states have (on average 294.2) internal successors, (2942), 9 states have internal predecessors, (2942), 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)
[2023-11-29 05:36:07,971 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:36:07,971 INFO  L93              Difference]: Finished difference Result 267225 states and 445073 transitions.
[2023-11-29 05:36:07,971 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:36:07,972 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 294.2) internal successors, (2942), 9 states have internal predecessors, (2942), 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 2942
[2023-11-29 05:36:07,973 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:36:08,084 INFO  L225             Difference]: With dead ends: 267225
[2023-11-29 05:36:08,084 INFO  L226             Difference]: Without dead ends: 160662
[2023-11-29 05:36:08,139 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2948 GetRequests, 2933 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272
[2023-11-29 05:36:08,139 INFO  L413           NwaCegarLoop]: 16707 mSDtfsCounter, 45135 mSDsluCounter, 57372 mSDsCounter, 0 mSdLazyCounter, 13871 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45135 SdHoareTripleChecker+Valid, 74079 SdHoareTripleChecker+Invalid, 13926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 13871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time
[2023-11-29 05:36:08,140 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45135 Valid, 74079 Invalid, 13926 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [55 Valid, 13871 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time]
[2023-11-29 05:36:08,226 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 160662 states.
[2023-11-29 05:36:09,628 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 160662 to 132314.
[2023-11-29 05:36:09,680 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 132314 states, 132313 states have (on average 1.6655128369850278) internal successors, (220369), 132313 states have internal predecessors, (220369), 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)
[2023-11-29 05:36:09,822 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 132314 states to 132314 states and 220369 transitions.
[2023-11-29 05:36:09,822 INFO  L78                 Accepts]: Start accepts. Automaton has 132314 states and 220369 transitions. Word has length 2942
[2023-11-29 05:36:09,823 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:36:09,823 INFO  L495      AbstractCegarLoop]: Abstraction has 132314 states and 220369 transitions.
[2023-11-29 05:36:09,824 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 294.2) internal successors, (2942), 9 states have internal predecessors, (2942), 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)
[2023-11-29 05:36:09,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 132314 states and 220369 transitions.
[2023-11-29 05:36:09,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2944
[2023-11-29 05:36:09,881 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:36:09,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:36:09,922 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2023-11-29 05:36:10,082 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53
[2023-11-29 05:36:10,083 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:36:10,083 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:36:10,084 INFO  L85        PathProgramCache]: Analyzing trace with hash 1878607277, now seen corresponding path program 1 times
[2023-11-29 05:36:10,084 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:36:10,084 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30464891]
[2023-11-29 05:36:10,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:36:10,084 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:36:10,445 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:36:10,445 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091229994]
[2023-11-29 05:36:10,445 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:36:10,446 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:36:10,446 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:36:10,446 INFO  L229       MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:36:10,447 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0219bf8d-896a-4284-877c-b04fe055662f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2023-11-29 05:36:13,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:36:13,663 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13055 conjuncts, 172 conjunts are in the unsatisfiable core
[2023-11-29 05:36:13,727 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:36:36,264 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:36:36,264 INFO  L327         TraceCheckSpWp]: Computing backward predicates...