./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.1.prop5-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_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/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_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.1.prop5-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/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_95dcb240-85e0-4817-bea9-ecf8ba9b60af/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 be2258335e0becf7760bcb5b88038d187f5bb9585ab6da0c0cbe24fbed379b8e
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 02:09:32,213 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 02:09:32,279 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 02:09:32,283 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 02:09:32,284 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 02:09:32,307 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 02:09:32,308 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 02:09:32,309 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 02:09:32,309 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 02:09:32,310 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 02:09:32,310 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 02:09:32,311 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 02:09:32,312 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 02:09:32,312 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 02:09:32,313 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 02:09:32,313 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 02:09:32,314 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 02:09:32,314 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 02:09:32,315 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 02:09:32,315 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 02:09:32,316 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 02:09:32,319 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 02:09:32,319 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 02:09:32,319 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 02:09:32,320 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 02:09:32,320 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 02:09:32,321 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 02:09:32,321 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 02:09:32,322 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 02:09:32,322 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 02:09:32,322 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 02:09:32,323 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 02:09:32,323 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 02:09:32,323 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 02:09:32,323 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 02:09:32,324 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 02:09:32,324 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 02:09:32,331 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 02:09:32,332 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 02:09:32,332 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_95dcb240-85e0-4817-bea9-ecf8ba9b60af/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_95dcb240-85e0-4817-bea9-ecf8ba9b60af/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 -> be2258335e0becf7760bcb5b88038d187f5bb9585ab6da0c0cbe24fbed379b8e
[2023-11-29 02:09:32,552 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 02:09:32,574 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 02:09:32,576 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 02:09:32,578 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 02:09:32,578 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 02:09:32,579 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.1.prop5-func-interl.c
[2023-11-29 02:09:35,341 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 02:09:35,864 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 02:09:35,865 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.1.prop5-func-interl.c
[2023-11-29 02:09:35,908 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/data/60adbc8e8/2fb109fb73f8494cb0f2a636d9d0013d/FLAG0362d4b74
[2023-11-29 02:09:35,923 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/data/60adbc8e8/2fb109fb73f8494cb0f2a636d9d0013d
[2023-11-29 02:09:35,926 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 02:09:35,927 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 02:09:35,929 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 02:09:35,929 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 02:09:35,934 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 02:09:35,935 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:09:35" (1/1) ...
[2023-11-29 02:09:35,936 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4748bf44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:35, skipping insertion in model container
[2023-11-29 02:09:35,936 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:09:35" (1/1) ...
[2023-11-29 02:09:36,121 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 02:09:36,386 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_95dcb240-85e0-4817-bea9-ecf8ba9b60af/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.1.prop5-func-interl.c[1179,1192]
[2023-11-29 02:09:37,548 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 02:09:37,560 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 02:09:37,572 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_95dcb240-85e0-4817-bea9-ecf8ba9b60af/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.1.prop5-func-interl.c[1179,1192]
[2023-11-29 02:09:38,556 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 02:09:38,571 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 02:09:38,571 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38 WrapperNode
[2023-11-29 02:09:38,571 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 02:09:38,572 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 02:09:38,573 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 02:09:38,573 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 02:09:38,580 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:38,860 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:41,567 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49088
[2023-11-29 02:09:41,568 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 02:09:41,569 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 02:09:41,569 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 02:09:41,569 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 02:09:41,577 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:41,577 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:42,313 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:42,713 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 02:09:42,713 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:42,713 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:43,612 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:43,771 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:43,946 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:44,091 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:44,719 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 02:09:44,720 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 02:09:44,720 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 02:09:44,720 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 02:09:44,721 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (1/1) ...
[2023-11-29 02:09:44,726 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 02:09:44,737 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:09:44,750 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 02:09:44,752 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 02:09:44,785 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 02:09:44,785 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 02:09:44,785 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 02:09:44,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 02:09:46,456 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 02:09:46,458 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 02:10:08,962 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 02:10:09,569 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 02:10:09,570 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 02:10:09,575 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:10:09 BoogieIcfgContainer
[2023-11-29 02:10:09,575 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 02:10:09,578 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 02:10:09,578 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 02:10:09,582 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 02:10:09,582 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:09:35" (1/3) ...
[2023-11-29 02:10:09,583 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@310d06e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:10:09, skipping insertion in model container
[2023-11-29 02:10:09,583 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:09:38" (2/3) ...
[2023-11-29 02:10:09,584 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@310d06e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:10:09, skipping insertion in model container
[2023-11-29 02:10:09,584 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:10:09" (3/3) ...
[2023-11-29 02:10:09,585 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.1.prop5-func-interl.c
[2023-11-29 02:10:09,605 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 02:10:09,605 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 02:10:09,795 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 02:10:09,803 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;@4b4e9ef3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 02:10:09,803 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 02:10:09,840 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10777 states, 10775 states have (on average 1.6672853828306264) internal successors, (17965), 10776 states have internal predecessors, (17965), 0 states have call successors, (0), 0 states 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 02:10:09,870 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 481
[2023-11-29 02:10:09,870 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:10:09,871 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:09,872 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:10:09,878 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:10:09,879 INFO  L85        PathProgramCache]: Analyzing trace with hash 1239428411, now seen corresponding path program 1 times
[2023-11-29 02:10:09,889 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:10:09,889 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64991556]
[2023-11-29 02:10:09,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:10:09,891 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:10:10,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:10:12,377 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 02:10:12,378 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:10:12,378 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64991556]
[2023-11-29 02:10:12,379 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64991556] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:10:12,379 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:10:12,379 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:10:12,381 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959769021]
[2023-11-29 02:10:12,382 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:10:12,387 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:10:12,388 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:10:12,417 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:10:12,418 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:10:12,450 INFO  L87              Difference]: Start difference. First operand  has 10777 states, 10775 states have (on average 1.6672853828306264) internal successors, (17965), 10776 states have internal predecessors, (17965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 02:10:13,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:10:13,252 INFO  L93              Difference]: Finished difference Result 21031 states and 35061 transitions.
[2023-11-29 02:10:13,253 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:10:13,255 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 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 480
[2023-11-29 02:10:13,258 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:10:13,323 INFO  L225             Difference]: With dead ends: 21031
[2023-11-29 02:10:13,323 INFO  L226             Difference]: Without dead ends: 10777
[2023-11-29 02:10:13,340 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 02:10:13,343 INFO  L413           NwaCegarLoop]: 17958 mSDtfsCounter, 1 mSDsluCounter, 35911 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53869 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:10:13,345 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53869 Invalid, 13 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:10:13,383 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10777 states.
[2023-11-29 02:10:13,610 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10777 to 10777.
[2023-11-29 02:10:13,637 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10777 states, 10776 states have (on average 1.6669450631031923) internal successors, (17963), 10776 states have internal predecessors, (17963), 0 states have call successors, (0), 0 states 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 02:10:13,679 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10777 states to 10777 states and 17963 transitions.
[2023-11-29 02:10:13,680 INFO  L78                 Accepts]: Start accepts. Automaton has 10777 states and 17963 transitions. Word has length 480
[2023-11-29 02:10:13,682 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:10:13,682 INFO  L495      AbstractCegarLoop]: Abstraction has 10777 states and 17963 transitions.
[2023-11-29 02:10:13,683 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 02:10:13,683 INFO  L276                IsEmpty]: Start isEmpty. Operand 10777 states and 17963 transitions.
[2023-11-29 02:10:13,693 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 482
[2023-11-29 02:10:13,693 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:10:13,694 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:13,694 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 02:10:13,694 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:10:13,695 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:10:13,695 INFO  L85        PathProgramCache]: Analyzing trace with hash -230637537, now seen corresponding path program 1 times
[2023-11-29 02:10:13,695 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:10:13,696 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289013267]
[2023-11-29 02:10:13,696 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:10:13,696 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:10:13,943 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:10:14,790 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 02:10:14,790 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:10:14,790 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289013267]
[2023-11-29 02:10:14,791 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289013267] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:10:14,791 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:10:14,791 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:10:14,791 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511128024]
[2023-11-29 02:10:14,791 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:10:14,793 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:10:14,794 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:10:14,795 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:10:14,795 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:10:14,796 INFO  L87              Difference]: Start difference. First operand 10777 states and 17963 transitions. Second operand  has 4 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 02:10:15,307 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:10:15,307 INFO  L93              Difference]: Finished difference Result 21034 states and 35059 transitions.
[2023-11-29 02:10:15,308 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:10:15,308 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 0 states have call successors, (0), 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 481
[2023-11-29 02:10:15,309 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:10:15,367 INFO  L225             Difference]: With dead ends: 21034
[2023-11-29 02:10:15,367 INFO  L226             Difference]: Without dead ends: 10780
[2023-11-29 02:10:15,378 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 02:10:15,379 INFO  L413           NwaCegarLoop]: 17958 mSDtfsCounter, 1 mSDsluCounter, 35909 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53867 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:10:15,380 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53867 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:10:15,402 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10780 states.
[2023-11-29 02:10:15,591 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10780 to 10779.
[2023-11-29 02:10:15,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10779 states, 10778 states have (on average 1.6668213026535534) internal successors, (17965), 10778 states have internal predecessors, (17965), 0 states have call successors, (0), 0 states 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 02:10:15,647 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10779 states to 10779 states and 17965 transitions.
[2023-11-29 02:10:15,648 INFO  L78                 Accepts]: Start accepts. Automaton has 10779 states and 17965 transitions. Word has length 481
[2023-11-29 02:10:15,649 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:10:15,649 INFO  L495      AbstractCegarLoop]: Abstraction has 10779 states and 17965 transitions.
[2023-11-29 02:10:15,650 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 02:10:15,650 INFO  L276                IsEmpty]: Start isEmpty. Operand 10779 states and 17965 transitions.
[2023-11-29 02:10:15,660 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 483
[2023-11-29 02:10:15,660 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:10:15,661 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:15,661 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 02:10:15,662 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:10:15,662 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:10:15,662 INFO  L85        PathProgramCache]: Analyzing trace with hash 1227953875, now seen corresponding path program 1 times
[2023-11-29 02:10:15,663 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:10:15,663 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780917562]
[2023-11-29 02:10:15,663 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:10:15,664 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:10:16,119 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:10:16,646 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 02:10:16,647 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:10:16,647 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780917562]
[2023-11-29 02:10:16,647 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780917562] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:10:16,647 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:10:16,648 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 02:10:16,648 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786647290]
[2023-11-29 02:10:16,648 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:10:16,649 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:10:16,650 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:10:16,651 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:10:16,651 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:10:16,652 INFO  L87              Difference]: Start difference. First operand 10779 states and 17965 transitions. Second operand  has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 02:10:17,301 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:10:17,302 INFO  L93              Difference]: Finished difference Result 31281 states and 52138 transitions.
[2023-11-29 02:10:17,302 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:10:17,303 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 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 482
[2023-11-29 02:10:17,304 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:10:17,361 INFO  L225             Difference]: With dead ends: 31281
[2023-11-29 02:10:17,361 INFO  L226             Difference]: Without dead ends: 21025
[2023-11-29 02:10:17,380 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:10:17,381 INFO  L413           NwaCegarLoop]: 18264 mSDtfsCounter, 17076 mSDsluCounter, 53286 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17076 SdHoareTripleChecker+Valid, 71550 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:10:17,382 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17076 Valid, 71550 Invalid, 23 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:10:17,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21025 states.
[2023-11-29 02:10:17,627 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21025 to 10781.
[2023-11-29 02:10:17,643 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10781 states, 10780 states have (on average 1.6666975881261596) internal successors, (17967), 10780 states have internal predecessors, (17967), 0 states have call successors, (0), 0 states 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 02:10:17,672 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10781 states to 10781 states and 17967 transitions.
[2023-11-29 02:10:17,673 INFO  L78                 Accepts]: Start accepts. Automaton has 10781 states and 17967 transitions. Word has length 482
[2023-11-29 02:10:17,674 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:10:17,674 INFO  L495      AbstractCegarLoop]: Abstraction has 10781 states and 17967 transitions.
[2023-11-29 02:10:17,675 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 02:10:17,675 INFO  L276                IsEmpty]: Start isEmpty. Operand 10781 states and 17967 transitions.
[2023-11-29 02:10:17,686 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 484
[2023-11-29 02:10:17,686 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:10:17,687 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:17,687 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 02:10:17,688 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:10:17,688 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:10:17,688 INFO  L85        PathProgramCache]: Analyzing trace with hash 1009986629, now seen corresponding path program 1 times
[2023-11-29 02:10:17,689 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:10:17,689 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711956472]
[2023-11-29 02:10:17,689 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:10:17,689 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:10:18,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:10:19,148 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 02:10:19,148 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:10:19,148 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711956472]
[2023-11-29 02:10:19,149 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711956472] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:10:19,149 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:10:19,149 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:10:19,149 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018318864]
[2023-11-29 02:10:19,149 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:10:19,150 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:10:19,151 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:10:19,152 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:10:19,152 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:10:19,153 INFO  L87              Difference]: Start difference. First operand 10781 states and 17967 transitions. Second operand  has 5 states, 5 states have (on average 96.6) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 02:10:31,943 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:10:31,943 INFO  L93              Difference]: Finished difference Result 31295 states and 52157 transitions.
[2023-11-29 02:10:31,944 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 02:10:31,944 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 96.6) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 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 483
[2023-11-29 02:10:31,945 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:10:31,972 INFO  L225             Difference]: With dead ends: 31295
[2023-11-29 02:10:31,972 INFO  L226             Difference]: Without dead ends: 21037
[2023-11-29 02:10:31,983 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:10:31,984 INFO  L413           NwaCegarLoop]: 13161 mSDtfsCounter, 51667 mSDsluCounter, 26316 mSDsCounter, 0 mSdLazyCounter, 14405 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51667 SdHoareTripleChecker+Valid, 39477 SdHoareTripleChecker+Invalid, 14406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:10:31,985 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [51667 Valid, 39477 Invalid, 14406 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 14405 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time]
[2023-11-29 02:10:32,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21037 states.
[2023-11-29 02:10:32,155 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21037 to 10967.
[2023-11-29 02:10:32,168 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10967 states, 10966 states have (on average 1.666514681743571) internal successors, (18275), 10966 states have internal predecessors, (18275), 0 states have call successors, (0), 0 states 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 02:10:32,182 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10967 states to 10967 states and 18275 transitions.
[2023-11-29 02:10:32,182 INFO  L78                 Accepts]: Start accepts. Automaton has 10967 states and 18275 transitions. Word has length 483
[2023-11-29 02:10:32,182 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:10:32,183 INFO  L495      AbstractCegarLoop]: Abstraction has 10967 states and 18275 transitions.
[2023-11-29 02:10:32,183 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 96.6) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 02:10:32,183 INFO  L276                IsEmpty]: Start isEmpty. Operand 10967 states and 18275 transitions.
[2023-11-29 02:10:32,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 484
[2023-11-29 02:10:32,186 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:10:32,186 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:32,186 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 02:10:32,186 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:10:32,187 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:10:32,187 INFO  L85        PathProgramCache]: Analyzing trace with hash 616959619, now seen corresponding path program 1 times
[2023-11-29 02:10:32,187 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:10:32,188 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018422430]
[2023-11-29 02:10:32,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:10:32,188 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:10:32,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:10:34,417 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 02:10:34,418 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:10:34,418 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018422430]
[2023-11-29 02:10:34,418 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018422430] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:10:34,418 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:10:34,419 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 02:10:34,419 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974468744]
[2023-11-29 02:10:34,419 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:10:34,420 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:10:34,420 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:10:34,421 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:10:34,421 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:10:34,422 INFO  L87              Difference]: Start difference. First operand 10967 states and 18275 transitions. Second operand  has 6 states, 6 states have (on average 80.5) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 02:10:35,236 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:10:35,236 INFO  L93              Difference]: Finished difference Result 31488 states and 52473 transitions.
[2023-11-29 02:10:35,236 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 02:10:35,236 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 80.5) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 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 483
[2023-11-29 02:10:35,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:10:35,261 INFO  L225             Difference]: With dead ends: 31488
[2023-11-29 02:10:35,261 INFO  L226             Difference]: Without dead ends: 21230
[2023-11-29 02:10:35,274 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:10:35,275 INFO  L413           NwaCegarLoop]: 18249 mSDtfsCounter, 68438 mSDsluCounter, 54127 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68438 SdHoareTripleChecker+Valid, 72376 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:10:35,276 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [68438 Valid, 72376 Invalid, 89 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 02:10:35,300 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21230 states.
[2023-11-29 02:10:35,476 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21230 to 10973.
[2023-11-29 02:10:35,490 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10973 states, 10972 states have (on average 1.6663324826831936) internal successors, (18283), 10972 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states 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 02:10:35,511 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10973 states to 10973 states and 18283 transitions.
[2023-11-29 02:10:35,512 INFO  L78                 Accepts]: Start accepts. Automaton has 10973 states and 18283 transitions. Word has length 483
[2023-11-29 02:10:35,513 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:10:35,513 INFO  L495      AbstractCegarLoop]: Abstraction has 10973 states and 18283 transitions.
[2023-11-29 02:10:35,513 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 80.5) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 02:10:35,513 INFO  L276                IsEmpty]: Start isEmpty. Operand 10973 states and 18283 transitions.
[2023-11-29 02:10:35,517 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 485
[2023-11-29 02:10:35,517 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:10:35,518 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:35,518 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 02:10:35,518 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:10:35,518 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:10:35,519 INFO  L85        PathProgramCache]: Analyzing trace with hash -1933154325, now seen corresponding path program 1 times
[2023-11-29 02:10:35,519 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:10:35,519 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878918710]
[2023-11-29 02:10:35,519 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:10:35,519 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:10:35,805 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:10:37,430 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 02:10:37,431 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:10:37,431 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878918710]
[2023-11-29 02:10:37,431 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878918710] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:10:37,431 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:10:37,431 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:10:37,432 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123429148]
[2023-11-29 02:10:37,432 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:10:37,432 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:10:37,433 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:10:37,434 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:10:37,434 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:10:37,434 INFO  L87              Difference]: Start difference. First operand 10973 states and 18283 transitions. Second operand  has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 02:10:38,475 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:10:38,476 INFO  L93              Difference]: Finished difference Result 31479 states and 52458 transitions.
[2023-11-29 02:10:38,476 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 02:10:38,476 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 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 484
[2023-11-29 02:10:38,477 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:10:38,496 INFO  L225             Difference]: With dead ends: 31479
[2023-11-29 02:10:38,497 INFO  L226             Difference]: Without dead ends: 21208
[2023-11-29 02:10:38,508 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2023-11-29 02:10:38,509 INFO  L413           NwaCegarLoop]: 18199 mSDtfsCounter, 69012 mSDsluCounter, 72201 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69012 SdHoareTripleChecker+Valid, 90400 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-29 02:10:38,509 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69012 Valid, 90400 Invalid, 293 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-29 02:10:38,536 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21208 states.
[2023-11-29 02:10:38,744 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21208 to 10968.
[2023-11-29 02:10:38,756 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10968 states, 10967 states have (on average 1.6662715418984226) internal successors, (18274), 10967 states have internal predecessors, (18274), 0 states have call successors, (0), 0 states 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 02:10:38,784 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10968 states to 10968 states and 18274 transitions.
[2023-11-29 02:10:38,784 INFO  L78                 Accepts]: Start accepts. Automaton has 10968 states and 18274 transitions. Word has length 484
[2023-11-29 02:10:38,785 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:10:38,786 INFO  L495      AbstractCegarLoop]: Abstraction has 10968 states and 18274 transitions.
[2023-11-29 02:10:38,786 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 02:10:38,786 INFO  L276                IsEmpty]: Start isEmpty. Operand 10968 states and 18274 transitions.
[2023-11-29 02:10:39,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7301
[2023-11-29 02:10:39,328 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:10:39,333 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:39,333 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-29 02:10:39,333 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:10:39,334 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:10:39,337 INFO  L85        PathProgramCache]: Analyzing trace with hash -1057592576, now seen corresponding path program 1 times
[2023-11-29 02:10:39,337 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:10:39,337 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834968643]
[2023-11-29 02:10:39,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:10:39,338 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:10:40,349 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:10:40,349 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979245259]
[2023-11-29 02:10:40,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:10:40,351 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:10:40,351 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:10:40,354 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:10:40,355 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 02:10:49,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:10:49,888 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36451 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 02:10:50,072 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:10:53,393 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:10:53,393 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:10:53,393 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:10:53,393 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834968643]
[2023-11-29 02:10:53,393 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:10:53,393 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979245259]
[2023-11-29 02:10:53,394 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [979245259] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:10:53,394 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:10:53,396 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:10:53,397 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520145152]
[2023-11-29 02:10:53,397 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:10:53,406 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:10:53,407 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:10:53,415 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:10:53,415 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:10:53,417 INFO  L87              Difference]: Start difference. First operand 10968 states and 18274 transitions. Second operand  has 4 states, 4 states have (on average 1825.0) internal successors, (7300), 3 states have internal predecessors, (7300), 0 states have call successors, (0), 0 states 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 02:10:59,147 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:10:59,147 INFO  L93              Difference]: Finished difference Result 21809 states and 36339 transitions.
[2023-11-29 02:10:59,147 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:10:59,149 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1825.0) internal successors, (7300), 3 states have internal predecessors, (7300), 0 states have call successors, (0), 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 7300
[2023-11-29 02:10:59,151 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:10:59,161 INFO  L225             Difference]: With dead ends: 21809
[2023-11-29 02:10:59,161 INFO  L226             Difference]: Without dead ends: 11548
[2023-11-29 02:10:59,168 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7300 GetRequests, 7297 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 02:10:59,169 INFO  L413           NwaCegarLoop]: 13940 mSDtfsCounter, 34190 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 5978 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34190 SdHoareTripleChecker+Valid, 15384 SdHoareTripleChecker+Invalid, 5978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-11-29 02:10:59,169 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34190 Valid, 15384 Invalid, 5978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5978 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-11-29 02:10:59,186 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11548 states.
[2023-11-29 02:10:59,318 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11548 to 10968.
[2023-11-29 02:10:59,328 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10968 states, 10967 states have (on average 1.666180359259597) internal successors, (18273), 10967 states have internal predecessors, (18273), 0 states have call successors, (0), 0 states 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 02:10:59,346 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10968 states to 10968 states and 18273 transitions.
[2023-11-29 02:10:59,346 INFO  L78                 Accepts]: Start accepts. Automaton has 10968 states and 18273 transitions. Word has length 7300
[2023-11-29 02:10:59,349 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:10:59,349 INFO  L495      AbstractCegarLoop]: Abstraction has 10968 states and 18273 transitions.
[2023-11-29 02:10:59,351 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1825.0) internal successors, (7300), 3 states have internal predecessors, (7300), 0 states have call successors, (0), 0 states 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 02:10:59,351 INFO  L276                IsEmpty]: Start isEmpty. Operand 10968 states and 18273 transitions.
[2023-11-29 02:10:59,878 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7302
[2023-11-29 02:10:59,878 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:10:59,882 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, 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, 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[2023-11-29 02:10:59,971 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 02:11:00,083 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:11:00,084 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:11:00,084 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:11:00,087 INFO  L85        PathProgramCache]: Analyzing trace with hash -444685178, now seen corresponding path program 1 times
[2023-11-29 02:11:00,087 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:11:00,087 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654949117]
[2023-11-29 02:11:00,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:11:00,088 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:11:01,036 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:11:01,036 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217061063]
[2023-11-29 02:11:01,038 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:11:01,038 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:11:01,038 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:11:01,039 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:11:01,041 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 02:11:09,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:11:10,143 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36452 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 02:11:10,250 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:11:12,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:11:12,737 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:11:12,738 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:11:12,738 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654949117]
[2023-11-29 02:11:12,738 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:11:12,738 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217061063]
[2023-11-29 02:11:12,738 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217061063] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:11:12,738 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:11:12,740 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:11:12,740 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655757248]
[2023-11-29 02:11:12,740 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:11:12,747 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:11:12,747 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:11:12,753 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:11:12,754 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:11:12,756 INFO  L87              Difference]: Start difference. First operand 10968 states and 18273 transitions. Second operand  has 4 states, 4 states have (on average 1825.25) internal successors, (7301), 3 states have internal predecessors, (7301), 0 states have call successors, (0), 0 states 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 02:11:18,363 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:11:18,363 INFO  L93              Difference]: Finished difference Result 21822 states and 36358 transitions.
[2023-11-29 02:11:18,364 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:11:18,365 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1825.25) internal successors, (7301), 3 states have internal predecessors, (7301), 0 states have call successors, (0), 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 7301
[2023-11-29 02:11:18,366 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:11:18,372 INFO  L225             Difference]: With dead ends: 21822
[2023-11-29 02:11:18,372 INFO  L226             Difference]: Without dead ends: 11561
[2023-11-29 02:11:18,375 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7301 GetRequests, 7298 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 02:11:18,376 INFO  L413           NwaCegarLoop]: 13959 mSDtfsCounter, 34179 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 5980 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34179 SdHoareTripleChecker+Valid, 15423 SdHoareTripleChecker+Invalid, 5980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-11-29 02:11:18,376 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34179 Valid, 15423 Invalid, 5980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5980 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-11-29 02:11:18,387 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11561 states.
[2023-11-29 02:11:18,459 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11561 to 10968.
[2023-11-29 02:11:18,468 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10968 states, 10967 states have (on average 1.6660891766207715) internal successors, (18272), 10967 states have internal predecessors, (18272), 0 states have call successors, (0), 0 states 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 02:11:18,479 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10968 states to 10968 states and 18272 transitions.
[2023-11-29 02:11:18,479 INFO  L78                 Accepts]: Start accepts. Automaton has 10968 states and 18272 transitions. Word has length 7301
[2023-11-29 02:11:18,481 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:11:18,481 INFO  L495      AbstractCegarLoop]: Abstraction has 10968 states and 18272 transitions.
[2023-11-29 02:11:18,482 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1825.25) internal successors, (7301), 3 states have internal predecessors, (7301), 0 states have call successors, (0), 0 states 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 02:11:18,482 INFO  L276                IsEmpty]: Start isEmpty. Operand 10968 states and 18272 transitions.
[2023-11-29 02:11:18,756 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7303
[2023-11-29 02:11:18,756 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:11:18,759 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:18,847 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 02:11:18,960 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:11:18,960 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:11:18,961 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:11:18,964 INFO  L85        PathProgramCache]: Analyzing trace with hash -317536931, now seen corresponding path program 1 times
[2023-11-29 02:11:18,964 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:11:18,964 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829383807]
[2023-11-29 02:11:18,966 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:11:18,966 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:11:19,660 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:11:19,660 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762706535]
[2023-11-29 02:11:19,662 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:11:19,662 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:11:19,663 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:11:19,664 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:11:19,665 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 02:11:28,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:11:28,623 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36453 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 02:11:28,720 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:11:31,148 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:11:31,148 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:11:31,148 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:11:31,148 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829383807]
[2023-11-29 02:11:31,148 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:11:31,148 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762706535]
[2023-11-29 02:11:31,148 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762706535] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:11:31,148 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:11:31,151 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:11:31,151 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921114910]
[2023-11-29 02:11:31,151 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:11:31,158 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:11:31,159 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:11:31,164 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:11:31,164 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:11:31,166 INFO  L87              Difference]: Start difference. First operand 10968 states and 18272 transitions. Second operand  has 4 states, 4 states have (on average 1825.5) internal successors, (7302), 3 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states 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 02:11:36,723 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:11:36,723 INFO  L93              Difference]: Finished difference Result 21838 states and 36382 transitions.
[2023-11-29 02:11:36,724 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:11:36,725 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1825.5) internal successors, (7302), 3 states have internal predecessors, (7302), 0 states have call successors, (0), 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 7302
[2023-11-29 02:11:36,726 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:11:36,735 INFO  L225             Difference]: With dead ends: 21838
[2023-11-29 02:11:36,735 INFO  L226             Difference]: Without dead ends: 11577
[2023-11-29 02:11:36,740 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7302 GetRequests, 7299 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 02:11:36,741 INFO  L413           NwaCegarLoop]: 13983 mSDtfsCounter, 34166 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5982 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34166 SdHoareTripleChecker+Valid, 15472 SdHoareTripleChecker+Invalid, 5982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-11-29 02:11:36,741 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34166 Valid, 15472 Invalid, 5982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5982 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-11-29 02:11:36,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11577 states.
[2023-11-29 02:11:36,827 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11577 to 10968.
[2023-11-29 02:11:36,835 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10968 states, 10967 states have (on average 1.6659979939819458) internal successors, (18271), 10967 states have internal predecessors, (18271), 0 states have call successors, (0), 0 states 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 02:11:36,846 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10968 states to 10968 states and 18271 transitions.
[2023-11-29 02:11:36,846 INFO  L78                 Accepts]: Start accepts. Automaton has 10968 states and 18271 transitions. Word has length 7302
[2023-11-29 02:11:36,848 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:11:36,848 INFO  L495      AbstractCegarLoop]: Abstraction has 10968 states and 18271 transitions.
[2023-11-29 02:11:36,849 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1825.5) internal successors, (7302), 3 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states 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 02:11:36,850 INFO  L276                IsEmpty]: Start isEmpty. Operand 10968 states and 18271 transitions.
[2023-11-29 02:11:37,110 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7304
[2023-11-29 02:11:37,110 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:11:37,114 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:37,198 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 02:11:37,314 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:11:37,314 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:11:37,316 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:11:37,318 INFO  L85        PathProgramCache]: Analyzing trace with hash -1346802583, now seen corresponding path program 1 times
[2023-11-29 02:11:37,318 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:11:37,318 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063676615]
[2023-11-29 02:11:37,319 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:11:37,319 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:11:38,025 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:11:38,026 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543268299]
[2023-11-29 02:11:38,028 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:11:38,028 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:11:38,028 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:11:38,029 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:11:38,030 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 02:11:46,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:11:47,116 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36454 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 02:11:47,318 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:11:49,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:11:49,507 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:11:49,507 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:11:49,507 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063676615]
[2023-11-29 02:11:49,508 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:11:49,508 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543268299]
[2023-11-29 02:11:49,508 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [543268299] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:11:49,508 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:11:49,510 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:11:49,510 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355170682]
[2023-11-29 02:11:49,510 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:11:49,520 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:11:49,520 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:11:49,525 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:11:49,525 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:11:49,527 INFO  L87              Difference]: Start difference. First operand 10968 states and 18271 transitions. Second operand  has 4 states, 4 states have (on average 1825.75) internal successors, (7303), 3 states have internal predecessors, (7303), 0 states have call successors, (0), 0 states 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 02:11:55,206 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:11:55,207 INFO  L93              Difference]: Finished difference Result 21845 states and 36391 transitions.
[2023-11-29 02:11:55,207 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:11:55,208 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1825.75) internal successors, (7303), 3 states have internal predecessors, (7303), 0 states have call successors, (0), 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 7303
[2023-11-29 02:11:55,209 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:11:55,217 INFO  L225             Difference]: With dead ends: 21845
[2023-11-29 02:11:55,217 INFO  L226             Difference]: Without dead ends: 11584
[2023-11-29 02:11:55,222 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7303 GetRequests, 7300 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 02:11:55,223 INFO  L413           NwaCegarLoop]: 13992 mSDtfsCounter, 34159 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5984 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34159 SdHoareTripleChecker+Valid, 15491 SdHoareTripleChecker+Invalid, 5984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-11-29 02:11:55,223 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34159 Valid, 15491 Invalid, 5984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5984 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-11-29 02:11:55,238 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11584 states.
[2023-11-29 02:11:55,319 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11584 to 10968.
[2023-11-29 02:11:55,328 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10968 states, 10967 states have (on average 1.6659068113431204) internal successors, (18270), 10967 states have internal predecessors, (18270), 0 states have call successors, (0), 0 states 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 02:11:55,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10968 states to 10968 states and 18270 transitions.
[2023-11-29 02:11:55,341 INFO  L78                 Accepts]: Start accepts. Automaton has 10968 states and 18270 transitions. Word has length 7303
[2023-11-29 02:11:55,343 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:11:55,343 INFO  L495      AbstractCegarLoop]: Abstraction has 10968 states and 18270 transitions.
[2023-11-29 02:11:55,345 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1825.75) internal successors, (7303), 3 states have internal predecessors, (7303), 0 states have call successors, (0), 0 states 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 02:11:55,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 10968 states and 18270 transitions.
[2023-11-29 02:11:55,572 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7305
[2023-11-29 02:11:55,572 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:11:55,576 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:55,672 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 02:11:55,778 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 02:11:55,779 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:11:55,779 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:11:55,781 INFO  L85        PathProgramCache]: Analyzing trace with hash -1030048146, now seen corresponding path program 1 times
[2023-11-29 02:11:55,781 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:11:55,782 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019488729]
[2023-11-29 02:11:55,782 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:11:55,782 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:11:56,605 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:11:56,605 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654513779]
[2023-11-29 02:11:56,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:11:56,607 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:11:56,607 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:11:56,608 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:11:56,609 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 02:12:05,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:12:05,461 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36455 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 02:12:05,570 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:12:07,927 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:12:07,927 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:12:07,927 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:12:07,927 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019488729]
[2023-11-29 02:12:07,927 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:12:07,928 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654513779]
[2023-11-29 02:12:07,928 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654513779] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:12:07,928 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:12:07,930 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:12:07,930 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890293500]
[2023-11-29 02:12:07,930 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:12:07,938 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:12:07,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:12:07,947 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:12:07,947 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:12:07,950 INFO  L87              Difference]: Start difference. First operand 10968 states and 18270 transitions. Second operand  has 4 states, 4 states have (on average 1826.0) internal successors, (7304), 3 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states 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 02:12:13,380 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:12:13,380 INFO  L93              Difference]: Finished difference Result 21849 states and 36395 transitions.
[2023-11-29 02:12:13,381 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:12:13,382 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1826.0) internal successors, (7304), 3 states have internal predecessors, (7304), 0 states have call successors, (0), 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 7304
[2023-11-29 02:12:13,383 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:12:13,392 INFO  L225             Difference]: With dead ends: 21849
[2023-11-29 02:12:13,392 INFO  L226             Difference]: Without dead ends: 11588
[2023-11-29 02:12:13,399 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7304 GetRequests, 7301 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 02:12:13,399 INFO  L413           NwaCegarLoop]: 13996 mSDtfsCounter, 34154 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 5986 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34154 SdHoareTripleChecker+Valid, 15500 SdHoareTripleChecker+Invalid, 5986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:12:13,399 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34154 Valid, 15500 Invalid, 5986 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5986 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2023-11-29 02:12:13,412 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11588 states.
[2023-11-29 02:12:13,493 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11588 to 10968.
[2023-11-29 02:12:13,502 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10968 states, 10967 states have (on average 1.6658156287042947) internal successors, (18269), 10967 states have internal predecessors, (18269), 0 states have call successors, (0), 0 states 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 02:12:13,515 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10968 states to 10968 states and 18269 transitions.
[2023-11-29 02:12:13,515 INFO  L78                 Accepts]: Start accepts. Automaton has 10968 states and 18269 transitions. Word has length 7304
[2023-11-29 02:12:13,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:12:13,517 INFO  L495      AbstractCegarLoop]: Abstraction has 10968 states and 18269 transitions.
[2023-11-29 02:12:13,518 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1826.0) internal successors, (7304), 3 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states 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 02:12:13,518 INFO  L276                IsEmpty]: Start isEmpty. Operand 10968 states and 18269 transitions.
[2023-11-29 02:12:13,834 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7306
[2023-11-29 02:12:13,834 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:12:13,838 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:13,934 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 02:12:14,038 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:12:14,039 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:12:14,040 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:12:14,043 INFO  L85        PathProgramCache]: Analyzing trace with hash -1335177036, now seen corresponding path program 1 times
[2023-11-29 02:12:14,043 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:12:14,043 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134393033]
[2023-11-29 02:12:14,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:14,044 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:12:14,711 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:12:14,712 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322088965]
[2023-11-29 02:12:14,713 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:14,713 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:12:14,713 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:12:14,714 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:12:14,716 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 02:12:23,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:12:23,333 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36456 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 02:12:23,437 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:12:25,652 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:12:25,652 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:12:25,652 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:12:25,652 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134393033]
[2023-11-29 02:12:25,652 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:12:25,652 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322088965]
[2023-11-29 02:12:25,652 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [322088965] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:12:25,652 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:12:25,655 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:12:25,655 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329166269]
[2023-11-29 02:12:25,655 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:12:25,663 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:12:25,663 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:12:25,668 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:12:25,668 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:12:25,670 INFO  L87              Difference]: Start difference. First operand 10968 states and 18269 transitions. Second operand  has 4 states, 4 states have (on average 1826.25) internal successors, (7305), 3 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states 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 02:12:31,170 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:12:31,170 INFO  L93              Difference]: Finished difference Result 21874 states and 36434 transitions.
[2023-11-29 02:12:31,170 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:12:31,172 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1826.25) internal successors, (7305), 3 states have internal predecessors, (7305), 0 states have call successors, (0), 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 7305
[2023-11-29 02:12:31,173 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:12:31,182 INFO  L225             Difference]: With dead ends: 21874
[2023-11-29 02:12:31,182 INFO  L226             Difference]: Without dead ends: 11613
[2023-11-29 02:12:31,188 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7305 GetRequests, 7302 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 02:12:31,188 INFO  L413           NwaCegarLoop]: 14035 mSDtfsCounter, 34135 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 5988 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34135 SdHoareTripleChecker+Valid, 15579 SdHoareTripleChecker+Invalid, 5988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:12:31,189 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34135 Valid, 15579 Invalid, 5988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5988 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2023-11-29 02:12:31,200 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11613 states.
[2023-11-29 02:12:31,282 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11613 to 10968.
[2023-11-29 02:12:31,291 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10968 states, 10967 states have (on average 1.6657244460654692) internal successors, (18268), 10967 states have internal predecessors, (18268), 0 states have call successors, (0), 0 states 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 02:12:31,305 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10968 states to 10968 states and 18268 transitions.
[2023-11-29 02:12:31,305 INFO  L78                 Accepts]: Start accepts. Automaton has 10968 states and 18268 transitions. Word has length 7305
[2023-11-29 02:12:31,307 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:12:31,307 INFO  L495      AbstractCegarLoop]: Abstraction has 10968 states and 18268 transitions.
[2023-11-29 02:12:31,309 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1826.25) internal successors, (7305), 3 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states 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 02:12:31,309 INFO  L276                IsEmpty]: Start isEmpty. Operand 10968 states and 18268 transitions.
[2023-11-29 02:12:31,655 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7307
[2023-11-29 02:12:31,655 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:12:31,657 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:31,750 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-29 02:12:31,858 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:12:31,858 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:12:31,860 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:12:31,863 INFO  L85        PathProgramCache]: Analyzing trace with hash -420330909, now seen corresponding path program 1 times
[2023-11-29 02:12:31,863 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:12:31,863 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106808701]
[2023-11-29 02:12:31,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:31,864 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:12:32,532 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:12:32,533 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456160513]
[2023-11-29 02:12:32,535 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:32,535 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:12:32,535 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:12:32,536 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:12:32,537 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 02:12:41,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:12:41,485 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36457 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 02:12:41,788 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:12:44,159 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:12:44,159 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:12:44,159 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:12:44,159 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106808701]
[2023-11-29 02:12:44,159 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:12:44,159 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456160513]
[2023-11-29 02:12:44,159 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456160513] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:12:44,159 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:12:44,161 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:12:44,161 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867757171]
[2023-11-29 02:12:44,161 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:12:44,166 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:12:44,166 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:12:44,171 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:12:44,172 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:12:44,173 INFO  L87              Difference]: Start difference. First operand 10968 states and 18268 transitions. Second operand  has 4 states, 4 states have (on average 1826.5) internal successors, (7306), 3 states have internal predecessors, (7306), 0 states have call successors, (0), 0 states 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 02:12:49,668 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:12:49,668 INFO  L93              Difference]: Finished difference Result 21893 states and 36463 transitions.
[2023-11-29 02:12:49,669 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:12:49,670 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1826.5) internal successors, (7306), 3 states have internal predecessors, (7306), 0 states have call successors, (0), 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 7306
[2023-11-29 02:12:49,671 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:12:49,680 INFO  L225             Difference]: With dead ends: 21893
[2023-11-29 02:12:49,680 INFO  L226             Difference]: Without dead ends: 11632
[2023-11-29 02:12:49,686 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7306 GetRequests, 7303 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 02:12:49,687 INFO  L413           NwaCegarLoop]: 14064 mSDtfsCounter, 34120 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 5990 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34120 SdHoareTripleChecker+Valid, 15638 SdHoareTripleChecker+Invalid, 5990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:12:49,687 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34120 Valid, 15638 Invalid, 5990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5990 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2023-11-29 02:12:49,699 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11632 states.
[2023-11-29 02:12:49,779 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11632 to 10968.
[2023-11-29 02:12:49,788 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10968 states, 10967 states have (on average 1.6656332634266435) internal successors, (18267), 10967 states have internal predecessors, (18267), 0 states have call successors, (0), 0 states 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 02:12:49,800 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10968 states to 10968 states and 18267 transitions.
[2023-11-29 02:12:49,800 INFO  L78                 Accepts]: Start accepts. Automaton has 10968 states and 18267 transitions. Word has length 7306
[2023-11-29 02:12:49,802 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:12:49,802 INFO  L495      AbstractCegarLoop]: Abstraction has 10968 states and 18267 transitions.
[2023-11-29 02:12:49,803 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1826.5) internal successors, (7306), 3 states have internal predecessors, (7306), 0 states have call successors, (0), 0 states 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 02:12:49,804 INFO  L276                IsEmpty]: Start isEmpty. Operand 10968 states and 18267 transitions.
[2023-11-29 02:12:50,138 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7308
[2023-11-29 02:12:50,138 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:12:50,141 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:50,233 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 02:12:50,341 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 02:12:50,342 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:12:50,344 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:12:50,346 INFO  L85        PathProgramCache]: Analyzing trace with hash -577269891, now seen corresponding path program 1 times
[2023-11-29 02:12:50,347 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:12:50,347 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375232530]
[2023-11-29 02:12:50,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:50,347 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:12:51,111 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:12:51,111 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930932364]
[2023-11-29 02:12:51,113 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:51,113 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:12:51,113 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:12:51,114 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:12:51,115 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 02:13:00,330 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:13:00,556 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36458 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 02:13:00,660 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:13:02,987 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:13:02,987 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:13:02,987 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:13:02,988 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375232530]
[2023-11-29 02:13:02,988 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:13:02,988 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930932364]
[2023-11-29 02:13:02,988 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [930932364] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:13:02,988 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:13:02,990 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:13:02,991 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229735770]
[2023-11-29 02:13:02,991 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:13:02,996 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:13:02,996 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:13:03,001 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:13:03,001 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:13:03,003 INFO  L87              Difference]: Start difference. First operand 10968 states and 18267 transitions. Second operand  has 4 states, 4 states have (on average 1826.75) internal successors, (7307), 3 states have internal predecessors, (7307), 0 states have call successors, (0), 0 states 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 02:13:08,719 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:13:08,719 INFO  L93              Difference]: Finished difference Result 21906 states and 36482 transitions.
[2023-11-29 02:13:08,720 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:13:08,721 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1826.75) internal successors, (7307), 3 states have internal predecessors, (7307), 0 states have call successors, (0), 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 7307
[2023-11-29 02:13:08,722 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:13:08,729 INFO  L225             Difference]: With dead ends: 21906
[2023-11-29 02:13:08,729 INFO  L226             Difference]: Without dead ends: 11645
[2023-11-29 02:13:08,733 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7307 GetRequests, 7304 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 02:13:08,734 INFO  L413           NwaCegarLoop]: 14083 mSDtfsCounter, 34109 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 5992 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34109 SdHoareTripleChecker+Valid, 15677 SdHoareTripleChecker+Invalid, 5992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-11-29 02:13:08,734 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34109 Valid, 15677 Invalid, 5992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5992 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-11-29 02:13:08,746 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11645 states.
[2023-11-29 02:13:08,830 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11645 to 10968.
[2023-11-29 02:13:08,840 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10968 states, 10967 states have (on average 1.665542080787818) internal successors, (18266), 10967 states have internal predecessors, (18266), 0 states have call successors, (0), 0 states 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 02:13:08,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10968 states to 10968 states and 18266 transitions.
[2023-11-29 02:13:08,854 INFO  L78                 Accepts]: Start accepts. Automaton has 10968 states and 18266 transitions. Word has length 7307
[2023-11-29 02:13:08,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:13:08,855 INFO  L495      AbstractCegarLoop]: Abstraction has 10968 states and 18266 transitions.
[2023-11-29 02:13:08,856 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1826.75) internal successors, (7307), 3 states have internal predecessors, (7307), 0 states have call successors, (0), 0 states 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 02:13:08,856 INFO  L276                IsEmpty]: Start isEmpty. Operand 10968 states and 18266 transitions.
[2023-11-29 02:13:09,083 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7309
[2023-11-29 02:13:09,083 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:13:09,085 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:09,193 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 02:13:09,285 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 02:13:09,286 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:13:09,286 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:13:09,289 INFO  L85        PathProgramCache]: Analyzing trace with hash 710276032, now seen corresponding path program 1 times
[2023-11-29 02:13:09,290 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:13:09,290 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825559751]
[2023-11-29 02:13:09,291 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:13:09,291 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:13:10,087 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:13:10,087 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286260038]
[2023-11-29 02:13:10,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:13:10,089 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:13:10,089 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:13:10,090 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:13:10,091 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 02:13:18,962 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:13:19,192 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36459 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-29 02:13:19,300 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:14:12,735 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:14:12,735 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:14:12,735 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:14:12,736 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825559751]
[2023-11-29 02:14:12,736 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:14:12,736 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286260038]
[2023-11-29 02:14:12,736 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [286260038] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:14:12,736 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:14:12,738 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 02:14:12,738 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407622956]
[2023-11-29 02:14:12,739 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:14:12,745 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:14:12,745 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:14:12,752 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:14:12,752 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:14:12,754 INFO  L87              Difference]: Start difference. First operand 10968 states and 18266 transitions. Second operand  has 5 states, 5 states have (on average 1461.6) internal successors, (7308), 5 states have internal predecessors, (7308), 0 states have call successors, (0), 0 states 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 02:14:26,541 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:14:26,541 INFO  L93              Difference]: Finished difference Result 31291 states and 52123 transitions.
[2023-11-29 02:14:26,541 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:14:26,543 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1461.6) internal successors, (7308), 5 states have internal predecessors, (7308), 0 states have call successors, (0), 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 7308
[2023-11-29 02:14:26,548 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:14:26,565 INFO  L225             Difference]: With dead ends: 31291
[2023-11-29 02:14:26,565 INFO  L226             Difference]: Without dead ends: 21030
[2023-11-29 02:14:26,574 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7309 GetRequests, 7304 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 02:14:26,575 INFO  L413           NwaCegarLoop]: 13616 mSDtfsCounter, 10086 mSDsluCounter, 39905 mSDsCounter, 0 mSdLazyCounter, 18275 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10086 SdHoareTripleChecker+Valid, 53521 SdHoareTripleChecker+Invalid, 18275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:14:26,575 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10086 Valid, 53521 Invalid, 18275 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 18275 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time]
[2023-11-29 02:14:26,596 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21030 states.
[2023-11-29 02:14:26,791 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 21022.
[2023-11-29 02:14:26,809 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21022 states, 21021 states have (on average 1.6657628086199514) internal successors, (35016), 21021 states have internal predecessors, (35016), 0 states have call successors, (0), 0 states 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 02:14:26,835 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21022 states to 21022 states and 35016 transitions.
[2023-11-29 02:14:26,835 INFO  L78                 Accepts]: Start accepts. Automaton has 21022 states and 35016 transitions. Word has length 7308
[2023-11-29 02:14:26,839 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:14:26,839 INFO  L495      AbstractCegarLoop]: Abstraction has 21022 states and 35016 transitions.
[2023-11-29 02:14:26,841 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1461.6) internal successors, (7308), 5 states have internal predecessors, (7308), 0 states have call successors, (0), 0 states 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 02:14:26,841 INFO  L276                IsEmpty]: Start isEmpty. Operand 21022 states and 35016 transitions.
[2023-11-29 02:14:27,066 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7310
[2023-11-29 02:14:27,066 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:14:27,068 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:27,167 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 02:14:27,268 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 02:14:27,268 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:14:27,269 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:14:27,270 INFO  L85        PathProgramCache]: Analyzing trace with hash -42955320, now seen corresponding path program 1 times
[2023-11-29 02:14:27,270 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:14:27,271 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088503057]
[2023-11-29 02:14:27,271 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:14:27,272 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:14:28,046 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:14:28,046 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247989712]
[2023-11-29 02:14:28,047 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:14:28,047 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:14:28,048 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:14:28,048 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:14:28,049 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 02:14:37,367 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:14:37,611 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36462 conjuncts, 30 conjunts are in the unsatisfiable core
[2023-11-29 02:14:37,719 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:15:17,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:15:17,823 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:15:17,824 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:15:17,824 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088503057]
[2023-11-29 02:15:17,824 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:15:17,824 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247989712]
[2023-11-29 02:15:17,824 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [247989712] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:15:17,824 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:15:17,826 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:15:17,827 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408770350]
[2023-11-29 02:15:17,827 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:15:17,831 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:15:17,831 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:15:17,836 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:15:17,836 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:15:17,838 INFO  L87              Difference]: Start difference. First operand 21022 states and 35016 transitions. Second operand  has 7 states, 7 states have (on average 1044.142857142857) internal successors, (7309), 6 states have internal predecessors, (7309), 0 states have call successors, (0), 0 states 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 02:15:30,020 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:15:30,021 INFO  L93              Difference]: Finished difference Result 51521 states and 85802 transitions.
[2023-11-29 02:15:30,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:15:30,022 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1044.142857142857) internal successors, (7309), 6 states have internal predecessors, (7309), 0 states have call successors, (0), 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 7309
[2023-11-29 02:15:30,026 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:15:30,049 INFO  L225             Difference]: With dead ends: 51521
[2023-11-29 02:15:30,049 INFO  L226             Difference]: Without dead ends: 31206
[2023-11-29 02:15:30,061 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7311 GetRequests, 7303 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 02:15:30,061 INFO  L413           NwaCegarLoop]: 13538 mSDtfsCounter, 63162 mSDsluCounter, 44296 mSDsCounter, 0 mSdLazyCounter, 14461 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63162 SdHoareTripleChecker+Valid, 57834 SdHoareTripleChecker+Invalid, 14520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 14461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time
[2023-11-29 02:15:30,062 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [63162 Valid, 57834 Invalid, 14520 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [59 Valid, 14461 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time]
[2023-11-29 02:15:30,087 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31206 states.
[2023-11-29 02:15:30,312 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31206 to 27599.
[2023-11-29 02:15:30,333 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27599 states, 27598 states have (on average 1.665736647583158) internal successors, (45971), 27598 states have internal predecessors, (45971), 0 states have call successors, (0), 0 states 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 02:15:30,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27599 states to 27599 states and 45971 transitions.
[2023-11-29 02:15:30,364 INFO  L78                 Accepts]: Start accepts. Automaton has 27599 states and 45971 transitions. Word has length 7309
[2023-11-29 02:15:30,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:15:30,366 INFO  L495      AbstractCegarLoop]: Abstraction has 27599 states and 45971 transitions.
[2023-11-29 02:15:30,368 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1044.142857142857) internal successors, (7309), 6 states have internal predecessors, (7309), 0 states have call successors, (0), 0 states 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 02:15:30,368 INFO  L276                IsEmpty]: Start isEmpty. Operand 27599 states and 45971 transitions.
[2023-11-29 02:15:30,589 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7311
[2023-11-29 02:15:30,589 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:15:30,590 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:30,708 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 02:15:30,791 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 02:15:30,791 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:15:30,791 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:15:30,793 INFO  L85        PathProgramCache]: Analyzing trace with hash 477182026, now seen corresponding path program 1 times
[2023-11-29 02:15:30,793 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:15:30,793 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761506006]
[2023-11-29 02:15:30,793 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:15:30,794 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:15:31,626 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:15:31,627 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636615613]
[2023-11-29 02:15:31,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:15:31,629 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:15:31,629 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:15:31,630 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:15:31,632 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 02:15:40,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:15:40,370 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36465 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-29 02:15:40,450 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:15:47,621 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:15:47,622 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:15:47,622 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:15:47,622 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761506006]
[2023-11-29 02:15:47,622 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:15:47,622 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636615613]
[2023-11-29 02:15:47,622 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636615613] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:15:47,622 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:15:47,624 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:15:47,624 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756036481]
[2023-11-29 02:15:47,624 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:15:47,627 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:15:47,627 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:15:47,631 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:15:47,632 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:15:47,633 INFO  L87              Difference]: Start difference. First operand 27599 states and 45971 transitions. Second operand  has 6 states, 6 states have (on average 1218.3333333333333) internal successors, (7310), 6 states have internal predecessors, (7310), 0 states have call successors, (0), 0 states 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 02:15:59,703 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:15:59,703 INFO  L93              Difference]: Finished difference Result 56374 states and 93910 transitions.
[2023-11-29 02:15:59,703 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:15:59,704 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1218.3333333333333) internal successors, (7310), 6 states have internal predecessors, (7310), 0 states have call successors, (0), 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 7310
[2023-11-29 02:15:59,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:15:59,728 INFO  L225             Difference]: With dead ends: 56374
[2023-11-29 02:15:59,728 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:15:59,739 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7312 GetRequests, 7305 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 02:15:59,740 INFO  L413           NwaCegarLoop]: 18177 mSDtfsCounter, 21048 mSDsluCounter, 49451 mSDsCounter, 0 mSdLazyCounter, 21594 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21048 SdHoareTripleChecker+Valid, 67628 SdHoareTripleChecker+Invalid, 21595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:15:59,740 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21048 Valid, 67628 Invalid, 21595 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 21594 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time]
[2023-11-29 02:15:59,763 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:15:59,989 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 28599.
[2023-11-29 02:16:00,013 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28599 states, 28598 states have (on average 1.665640953912861) internal successors, (47634), 28598 states have internal predecessors, (47634), 0 states have call successors, (0), 0 states 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 02:16:00,049 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28599 states to 28599 states and 47634 transitions.
[2023-11-29 02:16:00,049 INFO  L78                 Accepts]: Start accepts. Automaton has 28599 states and 47634 transitions. Word has length 7310
[2023-11-29 02:16:00,052 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:16:00,052 INFO  L495      AbstractCegarLoop]: Abstraction has 28599 states and 47634 transitions.
[2023-11-29 02:16:00,053 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1218.3333333333333) internal successors, (7310), 6 states have internal predecessors, (7310), 0 states have call successors, (0), 0 states 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 02:16:00,053 INFO  L276                IsEmpty]: Start isEmpty. Operand 28599 states and 47634 transitions.
[2023-11-29 02:16:00,293 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7312
[2023-11-29 02:16:00,293 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:16:00,295 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:00,399 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 02:16:00,495 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 02:16:00,496 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:16:00,496 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:16:00,498 INFO  L85        PathProgramCache]: Analyzing trace with hash -1535896064, now seen corresponding path program 1 times
[2023-11-29 02:16:00,498 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:16:00,498 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632410111]
[2023-11-29 02:16:00,499 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:16:00,499 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:16:01,204 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:16:01,205 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403134245]
[2023-11-29 02:16:01,206 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:16:01,206 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:16:01,206 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:16:01,207 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:16:01,208 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 02:16:09,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:16:10,140 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36469 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:16:10,234 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:16:18,650 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:16:18,651 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:16:18,651 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:16:18,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632410111]
[2023-11-29 02:16:18,651 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:16:18,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403134245]
[2023-11-29 02:16:18,651 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [403134245] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:16:18,651 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:16:18,653 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:16:18,654 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044160579]
[2023-11-29 02:16:18,654 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:16:18,659 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:16:18,659 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:16:18,665 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:16:18,666 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:16:18,668 INFO  L87              Difference]: Start difference. First operand 28599 states and 47634 transitions. Second operand  has 6 states, 6 states have (on average 1218.5) internal successors, (7311), 6 states have internal predecessors, (7311), 0 states have call successors, (0), 0 states 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 02:16:30,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:16:30,182 INFO  L93              Difference]: Finished difference Result 56874 states and 94739 transitions.
[2023-11-29 02:16:30,183 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:16:30,184 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1218.5) internal successors, (7311), 6 states have internal predecessors, (7311), 0 states have call successors, (0), 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 7311
[2023-11-29 02:16:30,188 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:16:30,216 INFO  L225             Difference]: With dead ends: 56874
[2023-11-29 02:16:30,217 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:16:30,231 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7312 GetRequests, 7306 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 02:16:30,231 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 25111 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25111 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time
[2023-11-29 02:16:30,232 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25111 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time]
[2023-11-29 02:16:30,268 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:16:30,606 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 28717.
[2023-11-29 02:16:30,625 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28717 states, 28716 states have (on average 1.665552305335005) internal successors, (47828), 28716 states have internal predecessors, (47828), 0 states have call successors, (0), 0 states 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 02:16:30,661 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28717 states to 28717 states and 47828 transitions.
[2023-11-29 02:16:30,661 INFO  L78                 Accepts]: Start accepts. Automaton has 28717 states and 47828 transitions. Word has length 7311
[2023-11-29 02:16:30,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:16:30,664 INFO  L495      AbstractCegarLoop]: Abstraction has 28717 states and 47828 transitions.
[2023-11-29 02:16:30,665 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1218.5) internal successors, (7311), 6 states have internal predecessors, (7311), 0 states have call successors, (0), 0 states 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 02:16:30,666 INFO  L276                IsEmpty]: Start isEmpty. Operand 28717 states and 47828 transitions.
[2023-11-29 02:16:30,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7313
[2023-11-29 02:16:30,891 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:16:30,893 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:30,997 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 02:16:31,093 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 02:16:31,094 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:16:31,096 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:16:31,098 INFO  L85        PathProgramCache]: Analyzing trace with hash 1067570970, now seen corresponding path program 1 times
[2023-11-29 02:16:31,098 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:16:31,099 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653066806]
[2023-11-29 02:16:31,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:16:31,100 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:16:31,826 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:16:31,827 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953704284]
[2023-11-29 02:16:31,828 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:16:31,828 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:16:31,828 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:16:31,829 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:16:31,830 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 02:16:40,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:16:40,676 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36472 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:16:40,760 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:16:48,368 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:16:48,369 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:16:48,369 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:16:48,369 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653066806]
[2023-11-29 02:16:48,369 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:16:48,369 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953704284]
[2023-11-29 02:16:48,369 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953704284] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:16:48,369 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:16:48,371 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:16:48,372 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917601658]
[2023-11-29 02:16:48,372 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:16:48,375 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:16:48,375 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:16:48,379 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:16:48,379 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:16:48,381 INFO  L87              Difference]: Start difference. First operand 28717 states and 47828 transitions. Second operand  has 6 states, 6 states have (on average 1218.6666666666667) internal successors, (7312), 6 states have internal predecessors, (7312), 0 states have call successors, (0), 0 states 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 02:17:00,348 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:17:00,348 INFO  L93              Difference]: Finished difference Result 56992 states and 94931 transitions.
[2023-11-29 02:17:00,348 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:17:00,350 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1218.6666666666667) internal successors, (7312), 6 states have internal predecessors, (7312), 0 states have call successors, (0), 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 7312
[2023-11-29 02:17:00,353 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:17:00,372 INFO  L225             Difference]: With dead ends: 56992
[2023-11-29 02:17:00,372 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:17:00,379 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7313 GetRequests, 7307 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 02:17:00,379 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 19313 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19313 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time
[2023-11-29 02:17:00,380 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19313 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time]
[2023-11-29 02:17:00,401 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:17:00,606 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 28807.
[2023-11-29 02:17:00,627 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28807 states, 28806 states have (on average 1.6654863570089564) internal successors, (47976), 28806 states have internal predecessors, (47976), 0 states have call successors, (0), 0 states 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 02:17:00,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28807 states to 28807 states and 47976 transitions.
[2023-11-29 02:17:00,657 INFO  L78                 Accepts]: Start accepts. Automaton has 28807 states and 47976 transitions. Word has length 7312
[2023-11-29 02:17:00,659 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:17:00,659 INFO  L495      AbstractCegarLoop]: Abstraction has 28807 states and 47976 transitions.
[2023-11-29 02:17:00,660 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1218.6666666666667) internal successors, (7312), 6 states have internal predecessors, (7312), 0 states have call successors, (0), 0 states 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 02:17:00,660 INFO  L276                IsEmpty]: Start isEmpty. Operand 28807 states and 47976 transitions.
[2023-11-29 02:17:00,879 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7314
[2023-11-29 02:17:00,879 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:17:00,881 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:00,969 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 02:17:01,081 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:17:01,082 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:17:01,082 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:17:01,084 INFO  L85        PathProgramCache]: Analyzing trace with hash 1661992838, now seen corresponding path program 1 times
[2023-11-29 02:17:01,084 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:17:01,084 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912205445]
[2023-11-29 02:17:01,085 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:17:01,086 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:17:01,712 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:17:01,713 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725936987]
[2023-11-29 02:17:01,714 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:17:01,714 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:17:01,714 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:17:01,715 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:17:01,716 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 02:17:10,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:17:10,813 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36475 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:17:10,925 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:17:17,415 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:17:17,416 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:17:17,416 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:17:17,416 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912205445]
[2023-11-29 02:17:17,416 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:17:17,416 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725936987]
[2023-11-29 02:17:17,416 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725936987] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:17:17,416 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:17:17,419 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:17:17,419 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584225241]
[2023-11-29 02:17:17,419 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:17:17,422 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:17:17,422 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:17:17,426 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:17:17,427 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:17:17,428 INFO  L87              Difference]: Start difference. First operand 28807 states and 47976 transitions. Second operand  has 6 states, 6 states have (on average 1218.8333333333333) internal successors, (7313), 6 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states 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 02:17:29,580 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:17:29,580 INFO  L93              Difference]: Finished difference Result 57082 states and 95077 transitions.
[2023-11-29 02:17:29,580 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:17:29,582 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1218.8333333333333) internal successors, (7313), 6 states have internal predecessors, (7313), 0 states have call successors, (0), 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 7313
[2023-11-29 02:17:29,584 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:17:29,606 INFO  L225             Difference]: With dead ends: 57082
[2023-11-29 02:17:29,607 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:17:29,618 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7314 GetRequests, 7308 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 02:17:29,619 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 19280 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19280 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time
[2023-11-29 02:17:29,619 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19280 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time]
[2023-11-29 02:17:29,644 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:17:29,868 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 28903.
[2023-11-29 02:17:29,889 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28903 states, 28902 states have (on average 1.6654210781260812) internal successors, (48134), 28902 states have internal predecessors, (48134), 0 states have call successors, (0), 0 states 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 02:17:29,920 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28903 states to 28903 states and 48134 transitions.
[2023-11-29 02:17:29,920 INFO  L78                 Accepts]: Start accepts. Automaton has 28903 states and 48134 transitions. Word has length 7313
[2023-11-29 02:17:29,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:17:29,923 INFO  L495      AbstractCegarLoop]: Abstraction has 28903 states and 48134 transitions.
[2023-11-29 02:17:29,924 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1218.8333333333333) internal successors, (7313), 6 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states 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 02:17:29,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 28903 states and 48134 transitions.
[2023-11-29 02:17:30,144 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7315
[2023-11-29 02:17:30,144 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:17:30,146 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:30,238 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 02:17:30,346 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:17:30,346 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:17:30,347 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:17:30,349 INFO  L85        PathProgramCache]: Analyzing trace with hash 1077798458, now seen corresponding path program 1 times
[2023-11-29 02:17:30,349 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:17:30,349 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990700699]
[2023-11-29 02:17:30,350 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:17:30,350 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:17:31,089 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:17:31,089 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867778483]
[2023-11-29 02:17:31,091 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:17:31,091 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:17:31,091 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:17:31,092 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:17:31,094 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 02:17:39,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:17:39,875 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36478 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:17:39,965 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:17:47,250 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:17:47,251 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:17:47,251 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:17:47,251 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990700699]
[2023-11-29 02:17:47,251 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:17:47,251 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867778483]
[2023-11-29 02:17:47,251 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867778483] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:17:47,251 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:17:47,253 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:17:47,254 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281185446]
[2023-11-29 02:17:47,254 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:17:47,257 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:17:47,257 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:17:47,261 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:17:47,261 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:17:47,263 INFO  L87              Difference]: Start difference. First operand 28903 states and 48134 transitions. Second operand  has 6 states, 6 states have (on average 1219.0) internal successors, (7314), 6 states have internal predecessors, (7314), 0 states have call successors, (0), 0 states 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 02:17:59,937 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:17:59,937 INFO  L93              Difference]: Finished difference Result 57178 states and 95233 transitions.
[2023-11-29 02:17:59,937 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:17:59,939 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1219.0) internal successors, (7314), 6 states have internal predecessors, (7314), 0 states have call successors, (0), 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 7314
[2023-11-29 02:17:59,942 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:17:59,970 INFO  L225             Difference]: With dead ends: 57178
[2023-11-29 02:17:59,970 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:17:59,983 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7315 GetRequests, 7309 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 02:17:59,984 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 24895 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24895 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:17:59,984 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24895 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time]
[2023-11-29 02:18:00,015 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:18:00,294 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 29023.
[2023-11-29 02:18:00,321 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29023 states, 29022 states have (on average 1.6653573151402385) internal successors, (48332), 29022 states have internal predecessors, (48332), 0 states have call successors, (0), 0 states 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 02:18:00,361 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29023 states to 29023 states and 48332 transitions.
[2023-11-29 02:18:00,362 INFO  L78                 Accepts]: Start accepts. Automaton has 29023 states and 48332 transitions. Word has length 7314
[2023-11-29 02:18:00,364 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:18:00,365 INFO  L495      AbstractCegarLoop]: Abstraction has 29023 states and 48332 transitions.
[2023-11-29 02:18:00,366 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1219.0) internal successors, (7314), 6 states have internal predecessors, (7314), 0 states have call successors, (0), 0 states 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 02:18:00,366 INFO  L276                IsEmpty]: Start isEmpty. Operand 29023 states and 48332 transitions.
[2023-11-29 02:18:00,606 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7316
[2023-11-29 02:18:00,606 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:18:00,608 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 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 02:18:00,723 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 02:18:00,808 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2023-11-29 02:18:00,809 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:18:00,809 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:18:00,810 INFO  L85        PathProgramCache]: Analyzing trace with hash -1411843058, now seen corresponding path program 1 times
[2023-11-29 02:18:00,811 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:18:00,811 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41014585]
[2023-11-29 02:18:00,812 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:18:00,812 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:18:01,644 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:18:01,645 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523615688]
[2023-11-29 02:18:01,646 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:18:01,646 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:18:01,647 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:18:01,647 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:18:01,648 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 02:18:10,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:18:10,603 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36481 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:18:10,703 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:18:19,228 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:18:19,228 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:18:19,228 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:18:19,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41014585]
[2023-11-29 02:18:19,229 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:18:19,229 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523615688]
[2023-11-29 02:18:19,229 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523615688] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:18:19,229 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:18:19,231 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:18:19,231 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602678748]
[2023-11-29 02:18:19,231 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:18:19,234 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:18:19,234 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:18:19,238 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:18:19,239 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:18:19,241 INFO  L87              Difference]: Start difference. First operand 29023 states and 48332 transitions. Second operand  has 6 states, 6 states have (on average 1219.1666666666667) internal successors, (7315), 6 states have internal predecessors, (7315), 0 states have call successors, (0), 0 states 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 02:18:32,910 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:18:32,910 INFO  L93              Difference]: Finished difference Result 57298 states and 95429 transitions.
[2023-11-29 02:18:32,911 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:18:32,913 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1219.1666666666667) internal successors, (7315), 6 states have internal predecessors, (7315), 0 states have call successors, (0), 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 7315
[2023-11-29 02:18:32,916 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:18:32,945 INFO  L225             Difference]: With dead ends: 57298
[2023-11-29 02:18:32,946 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:18:32,960 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7316 GetRequests, 7310 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 02:18:32,961 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 19205 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19205 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time
[2023-11-29 02:18:32,961 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19205 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time]
[2023-11-29 02:18:32,993 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:18:33,283 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 29113.
[2023-11-29 02:18:33,311 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29113 states, 29112 states have (on average 1.665292662819456) internal successors, (48480), 29112 states have internal predecessors, (48480), 0 states have call successors, (0), 0 states 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 02:18:33,352 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29113 states to 29113 states and 48480 transitions.
[2023-11-29 02:18:33,352 INFO  L78                 Accepts]: Start accepts. Automaton has 29113 states and 48480 transitions. Word has length 7315
[2023-11-29 02:18:33,356 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:18:33,356 INFO  L495      AbstractCegarLoop]: Abstraction has 29113 states and 48480 transitions.
[2023-11-29 02:18:33,357 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1219.1666666666667) internal successors, (7315), 6 states have internal predecessors, (7315), 0 states have call successors, (0), 0 states 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 02:18:33,358 INFO  L276                IsEmpty]: Start isEmpty. Operand 29113 states and 48480 transitions.
[2023-11-29 02:18:33,623 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7317
[2023-11-29 02:18:33,623 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:18:33,624 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:33,744 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-11-29 02:18:33,825 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2023-11-29 02:18:33,825 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:18:33,826 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:18:33,827 INFO  L85        PathProgramCache]: Analyzing trace with hash 768990080, now seen corresponding path program 1 times
[2023-11-29 02:18:33,828 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:18:33,828 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016667483]
[2023-11-29 02:18:33,829 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:18:33,829 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:18:34,658 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:18:34,659 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892191643]
[2023-11-29 02:18:34,660 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:18:34,661 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:18:34,661 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:18:34,662 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:18:34,663 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 02:18:44,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:18:45,181 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36484 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:18:45,291 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:18:55,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:18:55,303 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:18:55,303 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:18:55,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016667483]
[2023-11-29 02:18:55,303 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:18:55,304 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892191643]
[2023-11-29 02:18:55,304 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892191643] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:18:55,304 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:18:55,307 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:18:55,307 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070506365]
[2023-11-29 02:18:55,307 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:18:55,312 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:18:55,312 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:18:55,318 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:18:55,318 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:18:55,320 INFO  L87              Difference]: Start difference. First operand 29113 states and 48480 transitions. Second operand  has 6 states, 6 states have (on average 1219.3333333333333) internal successors, (7316), 6 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states 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 02:19:08,517 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:19:08,517 INFO  L93              Difference]: Finished difference Result 57388 states and 95575 transitions.
[2023-11-29 02:19:08,517 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:19:08,519 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1219.3333333333333) internal successors, (7316), 6 states have internal predecessors, (7316), 0 states have call successors, (0), 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 7316
[2023-11-29 02:19:08,523 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:19:08,546 INFO  L225             Difference]: With dead ends: 57388
[2023-11-29 02:19:08,546 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:19:08,554 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7317 GetRequests, 7311 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 02:19:08,554 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 19172 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19172 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:19:08,555 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19172 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time]
[2023-11-29 02:19:08,583 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:19:08,854 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 29209.
[2023-11-29 02:19:08,882 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29209 states, 29208 states have (on average 1.6652287044645302) internal successors, (48638), 29208 states have internal predecessors, (48638), 0 states have call successors, (0), 0 states 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 02:19:08,924 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29209 states to 29209 states and 48638 transitions.
[2023-11-29 02:19:08,925 INFO  L78                 Accepts]: Start accepts. Automaton has 29209 states and 48638 transitions. Word has length 7316
[2023-11-29 02:19:08,928 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:19:08,928 INFO  L495      AbstractCegarLoop]: Abstraction has 29209 states and 48638 transitions.
[2023-11-29 02:19:08,929 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1219.3333333333333) internal successors, (7316), 6 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states 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 02:19:08,930 INFO  L276                IsEmpty]: Start isEmpty. Operand 29209 states and 48638 transitions.
[2023-11-29 02:19:09,191 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7318
[2023-11-29 02:19:09,191 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:19:09,193 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:19:09,314 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 02:19:09,393 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2023-11-29 02:19:09,394 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:19:09,394 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:19:09,396 INFO  L85        PathProgramCache]: Analyzing trace with hash 411116526, now seen corresponding path program 1 times
[2023-11-29 02:19:09,396 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:19:09,396 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072519687]
[2023-11-29 02:19:09,397 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:19:09,397 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:19:10,223 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:19:10,223 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897852065]
[2023-11-29 02:19:10,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:19:10,225 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:19:10,225 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:19:10,226 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:19:10,227 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 02:19:19,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:19:19,454 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36487 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:19:19,543 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:19:26,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:19:26,701 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:19:26,702 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:19:26,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072519687]
[2023-11-29 02:19:26,702 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:19:26,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897852065]
[2023-11-29 02:19:26,702 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897852065] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:19:26,702 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:19:26,705 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:19:26,705 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164634718]
[2023-11-29 02:19:26,705 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:19:26,710 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:19:26,710 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:19:26,715 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:19:26,715 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:19:26,717 INFO  L87              Difference]: Start difference. First operand 29209 states and 48638 transitions. Second operand  has 6 states, 6 states have (on average 1219.5) internal successors, (7317), 6 states have internal predecessors, (7317), 0 states have call successors, (0), 0 states 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 02:19:40,334 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:19:40,334 INFO  L93              Difference]: Finished difference Result 57484 states and 95731 transitions.
[2023-11-29 02:19:40,334 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:19:40,336 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1219.5) internal successors, (7317), 6 states have internal predecessors, (7317), 0 states have call successors, (0), 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 7317
[2023-11-29 02:19:40,339 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:19:40,364 INFO  L225             Difference]: With dead ends: 57484
[2023-11-29 02:19:40,364 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:19:40,376 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7318 GetRequests, 7312 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:19:40,377 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 24679 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24679 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time
[2023-11-29 02:19:40,377 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24679 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time]
[2023-11-29 02:19:40,407 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:19:40,654 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 29329.
[2023-11-29 02:19:40,678 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29329 states, 29328 states have (on average 1.665166393889798) internal successors, (48836), 29328 states have internal predecessors, (48836), 0 states have call successors, (0), 0 states 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 02:19:40,714 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29329 states to 29329 states and 48836 transitions.
[2023-11-29 02:19:40,714 INFO  L78                 Accepts]: Start accepts. Automaton has 29329 states and 48836 transitions. Word has length 7317
[2023-11-29 02:19:40,717 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:19:40,717 INFO  L495      AbstractCegarLoop]: Abstraction has 29329 states and 48836 transitions.
[2023-11-29 02:19:40,718 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1219.5) internal successors, (7317), 6 states have internal predecessors, (7317), 0 states have call successors, (0), 0 states 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 02:19:40,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 29329 states and 48836 transitions.
[2023-11-29 02:19:40,946 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7319
[2023-11-29 02:19:40,946 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:19:40,947 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:19:41,051 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 02:19:41,147 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2023-11-29 02:19:41,148 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:19:41,148 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:19:41,149 INFO  L85        PathProgramCache]: Analyzing trace with hash 723031368, now seen corresponding path program 1 times
[2023-11-29 02:19:41,149 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:19:41,149 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580945616]
[2023-11-29 02:19:41,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:19:41,150 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:19:41,970 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:19:41,971 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772954478]
[2023-11-29 02:19:41,972 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:19:41,972 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:19:41,972 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:19:41,973 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:19:41,975 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 02:19:51,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:19:52,191 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36490 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:19:52,303 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:20:03,228 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:20:03,228 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:20:03,228 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:20:03,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580945616]
[2023-11-29 02:20:03,228 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:20:03,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772954478]
[2023-11-29 02:20:03,228 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772954478] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:20:03,228 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:20:03,231 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:20:03,231 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150463898]
[2023-11-29 02:20:03,231 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:20:03,235 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:20:03,235 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:20:03,239 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:20:03,239 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:20:03,242 INFO  L87              Difference]: Start difference. First operand 29329 states and 48836 transitions. Second operand  has 6 states, 6 states have (on average 1219.6666666666667) internal successors, (7318), 6 states have internal predecessors, (7318), 0 states have call successors, (0), 0 states 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 02:20:17,260 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:20:17,260 INFO  L93              Difference]: Finished difference Result 57604 states and 95927 transitions.
[2023-11-29 02:20:17,260 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:20:17,262 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1219.6666666666667) internal successors, (7318), 6 states have internal predecessors, (7318), 0 states have call successors, (0), 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 7318
[2023-11-29 02:20:17,266 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:20:17,295 INFO  L225             Difference]: With dead ends: 57604
[2023-11-29 02:20:17,296 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:20:17,310 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7319 GetRequests, 7313 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:20:17,311 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 24615 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24615 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time
[2023-11-29 02:20:17,311 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24615 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time]
[2023-11-29 02:20:17,344 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:20:17,639 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 29419.
[2023-11-29 02:20:17,668 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29419 states, 29418 states have (on average 1.6651029981643892) internal successors, (48984), 29418 states have internal predecessors, (48984), 0 states have call successors, (0), 0 states 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 02:20:17,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29419 states to 29419 states and 48984 transitions.
[2023-11-29 02:20:17,711 INFO  L78                 Accepts]: Start accepts. Automaton has 29419 states and 48984 transitions. Word has length 7318
[2023-11-29 02:20:17,714 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:20:17,714 INFO  L495      AbstractCegarLoop]: Abstraction has 29419 states and 48984 transitions.
[2023-11-29 02:20:17,716 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1219.6666666666667) internal successors, (7318), 6 states have internal predecessors, (7318), 0 states have call successors, (0), 0 states 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 02:20:17,716 INFO  L276                IsEmpty]: Start isEmpty. Operand 29419 states and 48984 transitions.
[2023-11-29 02:20:18,101 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7320
[2023-11-29 02:20:18,102 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:20:18,103 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:18,210 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2023-11-29 02:20:18,304 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-11-29 02:20:18,304 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:20:18,306 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:20:18,307 INFO  L85        PathProgramCache]: Analyzing trace with hash -332373838, now seen corresponding path program 1 times
[2023-11-29 02:20:18,307 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:20:18,307 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505934763]
[2023-11-29 02:20:18,309 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:20:18,309 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:20:19,173 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:20:19,173 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249075578]
[2023-11-29 02:20:19,175 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:20:19,175 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:20:19,175 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:20:19,176 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:20:19,177 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 02:20:29,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:20:29,678 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36494 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:20:29,785 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:20:38,967 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:20:38,967 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:20:38,967 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:20:38,967 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505934763]
[2023-11-29 02:20:38,967 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:20:38,967 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249075578]
[2023-11-29 02:20:38,967 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [249075578] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:20:38,967 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:20:38,969 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:20:38,969 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26571008]
[2023-11-29 02:20:38,969 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:20:38,973 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:20:38,973 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:20:38,976 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:20:38,976 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:20:38,978 INFO  L87              Difference]: Start difference. First operand 29419 states and 48984 transitions. Second operand  has 6 states, 6 states have (on average 1219.8333333333333) internal successors, (7319), 6 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states 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 02:20:52,188 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:20:52,188 INFO  L93              Difference]: Finished difference Result 57694 states and 96073 transitions.
[2023-11-29 02:20:52,188 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:20:52,190 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1219.8333333333333) internal successors, (7319), 6 states have internal predecessors, (7319), 0 states have call successors, (0), 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 7319
[2023-11-29 02:20:52,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:20:52,218 INFO  L225             Difference]: With dead ends: 57694
[2023-11-29 02:20:52,218 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:20:52,226 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7320 GetRequests, 7314 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 02:20:52,227 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 24551 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24551 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time
[2023-11-29 02:20:52,227 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24551 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time]
[2023-11-29 02:20:52,255 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:20:52,522 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 29509.
[2023-11-29 02:20:52,548 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29509 states, 29508 states have (on average 1.6650399891554832) internal successors, (49132), 29508 states have internal predecessors, (49132), 0 states have call successors, (0), 0 states 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 02:20:52,589 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29509 states to 29509 states and 49132 transitions.
[2023-11-29 02:20:52,589 INFO  L78                 Accepts]: Start accepts. Automaton has 29509 states and 49132 transitions. Word has length 7319
[2023-11-29 02:20:52,592 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:20:52,592 INFO  L495      AbstractCegarLoop]: Abstraction has 29509 states and 49132 transitions.
[2023-11-29 02:20:52,594 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1219.8333333333333) internal successors, (7319), 6 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states 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 02:20:52,594 INFO  L276                IsEmpty]: Start isEmpty. Operand 29509 states and 49132 transitions.
[2023-11-29 02:20:52,874 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7321
[2023-11-29 02:20:52,875 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:20:52,876 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:52,997 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 02:20:53,077 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:20:53,077 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:20:53,077 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:20:53,079 INFO  L85        PathProgramCache]: Analyzing trace with hash -998314480, now seen corresponding path program 1 times
[2023-11-29 02:20:53,079 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:20:53,079 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992166379]
[2023-11-29 02:20:53,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:20:53,080 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:20:53,766 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:20:53,767 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153082656]
[2023-11-29 02:20:53,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:20:53,768 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:20:53,768 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:20:53,769 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:20:53,770 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 02:21:02,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:21:02,974 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36497 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:21:03,059 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:21:12,620 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:21:12,620 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:21:12,620 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:21:12,620 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992166379]
[2023-11-29 02:21:12,620 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:21:12,620 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153082656]
[2023-11-29 02:21:12,620 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [153082656] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:21:12,620 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:21:12,622 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:21:12,622 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873164086]
[2023-11-29 02:21:12,622 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:21:12,625 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:21:12,626 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:21:12,629 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:21:12,629 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:21:12,631 INFO  L87              Difference]: Start difference. First operand 29509 states and 49132 transitions. Second operand  has 6 states, 6 states have (on average 1220.0) internal successors, (7320), 6 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states 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 02:21:26,363 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:21:26,364 INFO  L93              Difference]: Finished difference Result 57784 states and 96219 transitions.
[2023-11-29 02:21:26,364 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:21:26,366 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1220.0) internal successors, (7320), 6 states have internal predecessors, (7320), 0 states have call successors, (0), 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 7320
[2023-11-29 02:21:26,369 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:21:26,395 INFO  L225             Difference]: With dead ends: 57784
[2023-11-29 02:21:26,396 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:21:26,404 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7321 GetRequests, 7315 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 02:21:26,405 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 24468 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24468 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time
[2023-11-29 02:21:26,405 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24468 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time]
[2023-11-29 02:21:26,434 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:21:26,713 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 29623.
[2023-11-29 02:21:26,741 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29623 states, 29622 states have (on average 1.664978732023496) internal successors, (49320), 29622 states have internal predecessors, (49320), 0 states have call successors, (0), 0 states 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 02:21:26,784 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29623 states to 29623 states and 49320 transitions.
[2023-11-29 02:21:26,785 INFO  L78                 Accepts]: Start accepts. Automaton has 29623 states and 49320 transitions. Word has length 7320
[2023-11-29 02:21:26,788 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:21:26,788 INFO  L495      AbstractCegarLoop]: Abstraction has 29623 states and 49320 transitions.
[2023-11-29 02:21:26,789 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1220.0) internal successors, (7320), 6 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states 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 02:21:26,789 INFO  L276                IsEmpty]: Start isEmpty. Operand 29623 states and 49320 transitions.
[2023-11-29 02:21:27,058 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7322
[2023-11-29 02:21:27,058 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:21:27,059 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:27,181 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2023-11-29 02:21:27,260 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:21:27,260 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:21:27,261 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:21:27,262 INFO  L85        PathProgramCache]: Analyzing trace with hash -1870953184, now seen corresponding path program 1 times
[2023-11-29 02:21:27,262 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:21:27,262 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308074861]
[2023-11-29 02:21:27,263 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:21:27,264 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:21:28,082 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:21:28,083 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400086685]
[2023-11-29 02:21:28,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:21:28,085 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:21:28,085 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:21:28,086 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:21:28,086 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 02:21:37,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:21:37,316 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36500 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:21:37,408 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:21:46,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:21:46,940 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:21:46,940 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:21:46,940 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308074861]
[2023-11-29 02:21:46,940 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:21:46,940 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400086685]
[2023-11-29 02:21:46,941 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400086685] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:21:46,941 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:21:46,944 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:21:46,944 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639466847]
[2023-11-29 02:21:46,944 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:21:46,950 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:21:46,950 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:21:46,954 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:21:46,955 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:21:46,956 INFO  L87              Difference]: Start difference. First operand 29623 states and 49320 transitions. Second operand  has 6 states, 6 states have (on average 1220.1666666666667) internal successors, (7321), 6 states have internal predecessors, (7321), 0 states have call successors, (0), 0 states 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 02:22:00,792 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:22:00,792 INFO  L93              Difference]: Finished difference Result 57898 states and 96405 transitions.
[2023-11-29 02:22:00,792 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:22:00,794 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1220.1666666666667) internal successors, (7321), 6 states have internal predecessors, (7321), 0 states have call successors, (0), 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 7321
[2023-11-29 02:22:00,798 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:22:00,828 INFO  L225             Difference]: With dead ends: 57898
[2023-11-29 02:22:00,828 INFO  L226             Difference]: Without dead ends: 35559
[2023-11-29 02:22:00,843 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7322 GetRequests, 7316 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:22:00,843 INFO  L413           NwaCegarLoop]: 13140 mSDtfsCounter, 24407 mSDsluCounter, 39398 mSDsCounter, 0 mSdLazyCounter, 19269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24407 SdHoareTripleChecker+Valid, 52538 SdHoareTripleChecker+Invalid, 19270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:22:00,843 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24407 Valid, 52538 Invalid, 19270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19269 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time]
[2023-11-29 02:22:00,877 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35559 states.
[2023-11-29 02:22:01,169 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35559 to 29713.
[2023-11-29 02:22:01,197 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29713 states, 29712 states have (on average 1.6649165320409263) internal successors, (49468), 29712 states have internal predecessors, (49468), 0 states have call successors, (0), 0 states 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 02:22:01,241 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29713 states to 29713 states and 49468 transitions.
[2023-11-29 02:22:01,241 INFO  L78                 Accepts]: Start accepts. Automaton has 29713 states and 49468 transitions. Word has length 7321
[2023-11-29 02:22:01,244 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:22:01,244 INFO  L495      AbstractCegarLoop]: Abstraction has 29713 states and 49468 transitions.
[2023-11-29 02:22:01,246 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1220.1666666666667) internal successors, (7321), 6 states have internal predecessors, (7321), 0 states have call successors, (0), 0 states 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 02:22:01,246 INFO  L276                IsEmpty]: Start isEmpty. Operand 29713 states and 49468 transitions.
[2023-11-29 02:22:01,626 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7323
[2023-11-29 02:22:01,627 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:22:01,628 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:01,753 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-11-29 02:22:01,829 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:22:01,829 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:22:01,830 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:22:01,832 INFO  L85        PathProgramCache]: Analyzing trace with hash -1569406762, now seen corresponding path program 1 times
[2023-11-29 02:22:01,832 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:22:01,832 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085413335]
[2023-11-29 02:22:01,833 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:22:01,833 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:22:02,936 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:22:02,936 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614356441]
[2023-11-29 02:22:02,940 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:22:02,940 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:22:02,940 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:22:02,941 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:22:02,942 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95dcb240-85e0-4817-bea9-ecf8ba9b60af/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 02:22:13,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:22:13,857 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36503 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:22:13,964 INFO  L285         TraceCheckSpWp]: Computing forward predicates...