./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.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_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/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_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/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_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/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 89fa5bcee0b87baa8fdcd504d33e57009a693bf03fe212b3e5e783c0c5f361d6
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 05:47:22,774 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 05:47:22,836 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 05:47:22,840 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 05:47:22,841 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 05:47:22,864 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 05:47:22,864 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 05:47:22,865 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 05:47:22,865 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 05:47:22,866 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 05:47:22,867 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 05:47:22,867 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 05:47:22,868 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 05:47:22,868 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 05:47:22,869 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 05:47:22,869 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 05:47:22,870 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 05:47:22,870 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 05:47:22,871 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 05:47:22,871 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 05:47:22,872 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 05:47:22,873 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 05:47:22,874 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 05:47:22,874 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 05:47:22,875 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 05:47:22,875 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 05:47:22,875 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 05:47:22,876 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 05:47:22,876 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:47:22,877 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 05:47:22,877 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 05:47:22,877 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 05:47:22,878 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 05:47:22,878 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 05:47:22,879 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 05:47:22,879 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 05:47:22,879 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 05:47:22,880 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 05:47:22,880 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 05:47:22,880 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_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/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_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/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 -> 89fa5bcee0b87baa8fdcd504d33e57009a693bf03fe212b3e5e783c0c5f361d6
[2023-11-29 05:47:23,100 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 05:47:23,128 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 05:47:23,131 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 05:47:23,132 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 05:47:23,132 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 05:47:23,134 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.c
[2023-11-29 05:47:25,896 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 05:47:26,348 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 05:47:26,348 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.c
[2023-11-29 05:47:26,393 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/data/7713462c7/891e96e613504afab94fd552aaa7ba73/FLAG84f4214e7
[2023-11-29 05:47:26,406 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/data/7713462c7/891e96e613504afab94fd552aaa7ba73
[2023-11-29 05:47:26,409 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 05:47:26,411 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 05:47:26,412 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 05:47:26,412 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 05:47:26,417 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 05:47:26,418 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:47:26" (1/1) ...
[2023-11-29 05:47:26,419 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ba912a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:26, skipping insertion in model container
[2023-11-29 05:47:26,419 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:47:26" (1/1) ...
[2023-11-29 05:47:26,544 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 05:47:26,795 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_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.c[1177,1190]
[2023-11-29 05:47:27,577 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:47:27,587 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 05:47:27,599 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_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.c[1177,1190]
[2023-11-29 05:47:28,243 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:47:28,262 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 05:47:28,262 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28 WrapperNode
[2023-11-29 05:47:28,263 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 05:47:28,264 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 05:47:28,264 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 05:47:28,264 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 05:47:28,272 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:28,459 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:30,422 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29812
[2023-11-29 05:47:30,422 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 05:47:30,423 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 05:47:30,423 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 05:47:30,423 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 05:47:30,433 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:30,433 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:30,852 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:31,245 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 05:47:31,246 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:31,246 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:31,813 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:31,945 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:32,055 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:32,139 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:32,483 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 05:47:32,484 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 05:47:32,484 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 05:47:32,485 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 05:47:32,485 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ...
[2023-11-29 05:47:32,492 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:47:32,502 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:47:32,514 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 05:47:32,515 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 05:47:32,544 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 05:47:32,544 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 05:47:32,544 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 05:47:32,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 05:47:33,694 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 05:47:33,697 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 05:47:47,559 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 05:47:47,998 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 05:47:47,998 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 05:47:48,001 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:47:48 BoogieIcfgContainer
[2023-11-29 05:47:48,002 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 05:47:48,005 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 05:47:48,005 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 05:47:48,009 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 05:47:48,009 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:47:26" (1/3) ...
[2023-11-29 05:47:48,010 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e41866e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:47:48, skipping insertion in model container
[2023-11-29 05:47:48,010 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (2/3) ...
[2023-11-29 05:47:48,010 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e41866e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:47:48, skipping insertion in model container
[2023-11-29 05:47:48,011 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:47:48" (3/3) ...
[2023-11-29 05:47:48,012 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.7.prop1-back-serstep.c
[2023-11-29 05:47:48,027 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 05:47:48,027 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 05:47:48,163 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 05:47:48,169 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;@712011eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 05:47:48,170 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 05:47:48,189 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6818 states, 6816 states have (on average 1.67018779342723) internal successors, (11384), 6817 states have internal predecessors, (11384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:48,233 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 731
[2023-11-29 05:47:48,233 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:47:48,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:47:48,235 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:47:48,239 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:47:48,240 INFO  L85        PathProgramCache]: Analyzing trace with hash 207506214, now seen corresponding path program 1 times
[2023-11-29 05:47:48,248 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:47:48,248 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648290500]
[2023-11-29 05:47:48,248 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:47:48,249 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:47:49,156 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:47:52,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:47:52,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:47:52,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648290500]
[2023-11-29 05:47:52,680 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648290500] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:47:52,681 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:47:52,681 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:47:52,683 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765674028]
[2023-11-29 05:47:52,683 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:47:52,690 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:47:52,690 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:47:52,719 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:47:52,719 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:47:52,737 INFO  L87              Difference]: Start difference. First operand  has 6818 states, 6816 states have (on average 1.67018779342723) internal successors, (11384), 6817 states have internal predecessors, (11384), 0 states have call successors, (0), 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 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:53,208 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:47:53,209 INFO  L93              Difference]: Finished difference Result 13401 states and 22379 transitions.
[2023-11-29 05:47:53,210 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:47:53,211 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 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 730
[2023-11-29 05:47:53,216 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:47:53,266 INFO  L225             Difference]: With dead ends: 13401
[2023-11-29 05:47:53,266 INFO  L226             Difference]: Without dead ends: 6818
[2023-11-29 05:47:53,280 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:47:53,283 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 1 mSDsluCounter, 22749 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34126 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:47:53,284 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34126 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:47:53,315 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6818 states.
[2023-11-29 05:47:53,476 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6818 to 6818.
[2023-11-29 05:47:53,493 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6818 states, 6817 states have (on average 1.6696494058970222) internal successors, (11382), 6817 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:53,523 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6818 states to 6818 states and 11382 transitions.
[2023-11-29 05:47:53,524 INFO  L78                 Accepts]: Start accepts. Automaton has 6818 states and 11382 transitions. Word has length 730
[2023-11-29 05:47:53,527 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:47:53,527 INFO  L495      AbstractCegarLoop]: Abstraction has 6818 states and 11382 transitions.
[2023-11-29 05:47:53,528 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:53,528 INFO  L276                IsEmpty]: Start isEmpty. Operand 6818 states and 11382 transitions.
[2023-11-29 05:47:53,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 732
[2023-11-29 05:47:53,554 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:47:53,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:47:53,555 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 05:47:53,555 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:47:53,556 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:47:53,556 INFO  L85        PathProgramCache]: Analyzing trace with hash 2139454642, now seen corresponding path program 1 times
[2023-11-29 05:47:53,557 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:47:53,557 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620117388]
[2023-11-29 05:47:53,557 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:47:53,558 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:47:53,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:47:55,222 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:47:55,222 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:47:55,222 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620117388]
[2023-11-29 05:47:55,222 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620117388] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:47:55,223 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:47:55,223 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:47:55,223 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063370272]
[2023-11-29 05:47:55,223 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:47:55,226 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:47:55,226 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:47:55,227 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:47:55,228 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:47:55,228 INFO  L87              Difference]: Start difference. First operand 6818 states and 11382 transitions. Second operand  has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:55,603 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:47:55,603 INFO  L93              Difference]: Finished difference Result 13404 states and 22377 transitions.
[2023-11-29 05:47:55,604 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:47:55,605 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 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 731
[2023-11-29 05:47:55,606 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:47:55,637 INFO  L225             Difference]: With dead ends: 13404
[2023-11-29 05:47:55,637 INFO  L226             Difference]: Without dead ends: 6821
[2023-11-29 05:47:55,644 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:47:55,646 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 1 mSDsluCounter, 22747 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34124 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 05:47:55,646 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34124 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:47:55,659 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6821 states.
[2023-11-29 05:47:55,763 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 6820.
[2023-11-29 05:47:55,777 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6820 states, 6819 states have (on average 1.6694529989734566) internal successors, (11384), 6819 states have internal predecessors, (11384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:55,800 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6820 states to 6820 states and 11384 transitions.
[2023-11-29 05:47:55,800 INFO  L78                 Accepts]: Start accepts. Automaton has 6820 states and 11384 transitions. Word has length 731
[2023-11-29 05:47:55,801 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:47:55,801 INFO  L495      AbstractCegarLoop]: Abstraction has 6820 states and 11384 transitions.
[2023-11-29 05:47:55,802 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:55,803 INFO  L276                IsEmpty]: Start isEmpty. Operand 6820 states and 11384 transitions.
[2023-11-29 05:47:55,813 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 733
[2023-11-29 05:47:55,813 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:47:55,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:47:55,814 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 05:47:55,814 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:47:55,814 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:47:55,815 INFO  L85        PathProgramCache]: Analyzing trace with hash -831803582, now seen corresponding path program 1 times
[2023-11-29 05:47:55,815 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:47:55,816 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166963003]
[2023-11-29 05:47:55,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:47:55,816 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:47:56,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:47:57,327 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:47:57,327 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:47:57,327 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166963003]
[2023-11-29 05:47:57,328 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166963003] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:47:57,328 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:47:57,328 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:47:57,329 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197206272]
[2023-11-29 05:47:57,329 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:47:57,330 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:47:57,330 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:47:57,331 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:47:57,331 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:47:57,333 INFO  L87              Difference]: Start difference. First operand 6820 states and 11384 transitions. Second operand  has 5 states, 5 states have (on average 146.4) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:57,903 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:47:57,903 INFO  L93              Difference]: Finished difference Result 20832 states and 34775 transitions.
[2023-11-29 05:47:57,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:47:57,904 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 146.4) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 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 732
[2023-11-29 05:47:57,905 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:47:57,964 INFO  L225             Difference]: With dead ends: 20832
[2023-11-29 05:47:57,964 INFO  L226             Difference]: Without dead ends: 14247
[2023-11-29 05:47:57,974 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:47:57,975 INFO  L413           NwaCegarLoop]: 12791 mSDtfsCounter, 45015 mSDsluCounter, 22748 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45015 SdHoareTripleChecker+Valid, 35539 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:47:57,976 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45015 Valid, 35539 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:47:57,996 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14247 states.
[2023-11-29 05:47:58,149 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14247 to 7671.
[2023-11-29 05:47:58,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7671 states, 7670 states have (on average 1.6689700130378096) internal successors, (12801), 7670 states have internal predecessors, (12801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:58,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7671 states to 7671 states and 12801 transitions.
[2023-11-29 05:47:58,177 INFO  L78                 Accepts]: Start accepts. Automaton has 7671 states and 12801 transitions. Word has length 732
[2023-11-29 05:47:58,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:47:58,179 INFO  L495      AbstractCegarLoop]: Abstraction has 7671 states and 12801 transitions.
[2023-11-29 05:47:58,180 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 146.4) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:58,180 INFO  L276                IsEmpty]: Start isEmpty. Operand 7671 states and 12801 transitions.
[2023-11-29 05:47:58,422 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5000
[2023-11-29 05:47:58,423 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:47:58,426 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:47:58,426 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 05:47:58,426 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:47:58,427 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:47:58,429 INFO  L85        PathProgramCache]: Analyzing trace with hash 2042420834, now seen corresponding path program 1 times
[2023-11-29 05:47:58,429 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:47:58,429 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873942513]
[2023-11-29 05:47:58,430 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:47:58,430 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:47:59,001 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:47:59,001 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511761902]
[2023-11-29 05:47:59,003 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:47:59,003 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:47:59,003 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:47:59,013 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:47:59,014 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 05:48:04,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:05,066 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22350 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 05:48:05,196 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:48:05,416 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:48:05,416 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:48:05,416 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:05,416 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873942513]
[2023-11-29 05:48:05,417 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:48:05,417 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511761902]
[2023-11-29 05:48:05,417 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511761902] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:05,417 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:05,419 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:48:05,419 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605740847]
[2023-11-29 05:48:05,419 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:05,424 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:48:05,424 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:05,428 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:48:05,428 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:48:05,430 INFO  L87              Difference]: Start difference. First operand 7671 states and 12801 transitions. Second operand  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:05,593 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:05,594 INFO  L93              Difference]: Finished difference Result 14266 states and 23810 transitions.
[2023-11-29 05:48:05,594 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:48:05,596 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 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 4999
[2023-11-29 05:48:05,598 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:05,610 INFO  L225             Difference]: With dead ends: 14266
[2023-11-29 05:48:05,610 INFO  L226             Difference]: Without dead ends: 7681
[2023-11-29 05:48:05,617 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4998 GetRequests, 4996 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:48:05,618 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 12 mSDsluCounter, 22744 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34121 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:05,619 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34121 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:48:05,632 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7681 states.
[2023-11-29 05:48:05,716 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7681 to 7673.
[2023-11-29 05:48:05,725 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7673 states, 7672 states have (on average 1.6687956204379562) internal successors, (12803), 7672 states have internal predecessors, (12803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:05,732 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7673 states to 7673 states and 12803 transitions.
[2023-11-29 05:48:05,733 INFO  L78                 Accepts]: Start accepts. Automaton has 7673 states and 12803 transitions. Word has length 4999
[2023-11-29 05:48:05,735 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:05,735 INFO  L495      AbstractCegarLoop]: Abstraction has 7673 states and 12803 transitions.
[2023-11-29 05:48:05,737 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:05,737 INFO  L276                IsEmpty]: Start isEmpty. Operand 7673 states and 12803 transitions.
[2023-11-29 05:48:05,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5000
[2023-11-29 05:48:05,842 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:05,845 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:48:05,901 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 05:48:06,045 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:06,046 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:06,046 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:06,048 INFO  L85        PathProgramCache]: Analyzing trace with hash -442481488, now seen corresponding path program 1 times
[2023-11-29 05:48:06,048 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:06,048 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474783419]
[2023-11-29 05:48:06,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:06,049 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:06,500 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:48:06,501 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819419271]
[2023-11-29 05:48:06,502 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:06,502 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:06,502 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:48:06,503 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:48:06,504 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 05:48:11,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:11,923 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22351 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 05:48:11,995 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:48:12,163 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:48:12,163 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:48:12,163 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:12,164 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474783419]
[2023-11-29 05:48:12,164 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:48:12,164 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819419271]
[2023-11-29 05:48:12,164 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [819419271] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:12,164 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:12,166 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:48:12,166 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098187199]
[2023-11-29 05:48:12,166 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:12,172 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:48:12,172 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:12,178 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:48:12,178 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:48:12,180 INFO  L87              Difference]: Start difference. First operand 7673 states and 12803 transitions. Second operand  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:12,350 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:12,351 INFO  L93              Difference]: Finished difference Result 14269 states and 23812 transitions.
[2023-11-29 05:48:12,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:48:12,353 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 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 4999
[2023-11-29 05:48:12,357 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:12,369 INFO  L225             Difference]: With dead ends: 14269
[2023-11-29 05:48:12,369 INFO  L226             Difference]: Without dead ends: 7682
[2023-11-29 05:48:12,375 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4998 GetRequests, 4996 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:48:12,376 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 12 mSDsluCounter, 22744 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34121 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:12,376 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34121 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:48:12,385 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7682 states.
[2023-11-29 05:48:12,452 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7682 to 7674.
[2023-11-29 05:48:12,460 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7674 states, 7673 states have (on average 1.6687084582301577) internal successors, (12804), 7673 states have internal predecessors, (12804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:12,468 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7674 states to 7674 states and 12804 transitions.
[2023-11-29 05:48:12,469 INFO  L78                 Accepts]: Start accepts. Automaton has 7674 states and 12804 transitions. Word has length 4999
[2023-11-29 05:48:12,472 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:12,472 INFO  L495      AbstractCegarLoop]: Abstraction has 7674 states and 12804 transitions.
[2023-11-29 05:48:12,473 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:12,473 INFO  L276                IsEmpty]: Start isEmpty. Operand 7674 states and 12804 transitions.
[2023-11-29 05:48:12,576 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5000
[2023-11-29 05:48:12,576 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:12,579 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:48:12,630 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 05:48:12,780 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:12,780 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:12,780 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:12,782 INFO  L85        PathProgramCache]: Analyzing trace with hash -1569664258, now seen corresponding path program 1 times
[2023-11-29 05:48:12,782 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:12,782 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875244559]
[2023-11-29 05:48:12,783 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:12,783 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:13,318 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:48:13,319 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487504882]
[2023-11-29 05:48:13,320 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:13,321 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:13,321 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:48:13,322 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:48:13,329 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 05:48:18,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:18,534 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22352 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 05:48:18,613 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:48:18,721 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:48:18,722 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:48:18,722 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:18,722 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875244559]
[2023-11-29 05:48:18,722 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:48:18,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487504882]
[2023-11-29 05:48:18,723 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487504882] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:18,723 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:18,725 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:48:18,725 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827843108]
[2023-11-29 05:48:18,726 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:18,731 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:48:18,731 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:18,735 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:48:18,735 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:48:18,736 INFO  L87              Difference]: Start difference. First operand 7674 states and 12804 transitions. Second operand  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:18,884 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:18,884 INFO  L93              Difference]: Finished difference Result 14271 states and 23814 transitions.
[2023-11-29 05:48:18,885 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:48:18,886 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 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 4999
[2023-11-29 05:48:18,891 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:18,902 INFO  L225             Difference]: With dead ends: 14271
[2023-11-29 05:48:18,902 INFO  L226             Difference]: Without dead ends: 7683
[2023-11-29 05:48:18,908 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4998 GetRequests, 4996 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:48:18,908 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 12 mSDsluCounter, 22744 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34121 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:18,909 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34121 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:48:18,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7683 states.
[2023-11-29 05:48:18,986 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7683 to 7675.
[2023-11-29 05:48:18,994 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7675 states, 7674 states have (on average 1.6686213187385979) internal successors, (12805), 7674 states have internal predecessors, (12805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:19,003 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7675 states to 7675 states and 12805 transitions.
[2023-11-29 05:48:19,003 INFO  L78                 Accepts]: Start accepts. Automaton has 7675 states and 12805 transitions. Word has length 4999
[2023-11-29 05:48:19,006 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:19,007 INFO  L495      AbstractCegarLoop]: Abstraction has 7675 states and 12805 transitions.
[2023-11-29 05:48:19,008 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:19,008 INFO  L276                IsEmpty]: Start isEmpty. Operand 7675 states and 12805 transitions.
[2023-11-29 05:48:19,111 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5000
[2023-11-29 05:48:19,111 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:19,114 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:48:19,165 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 05:48:19,314 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-29 05:48:19,315 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:19,315 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:19,317 INFO  L85        PathProgramCache]: Analyzing trace with hash 1917144140, now seen corresponding path program 1 times
[2023-11-29 05:48:19,317 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:19,317 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080422409]
[2023-11-29 05:48:19,317 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:19,317 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:19,711 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:48:19,711 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604041716]
[2023-11-29 05:48:19,712 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:19,712 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:19,712 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:48:19,713 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:48:19,714 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 05:48:24,799 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:24,932 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22353 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:48:25,009 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:48:25,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked.
[2023-11-29 05:48:25,411 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:48:25,411 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:25,411 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080422409]
[2023-11-29 05:48:25,411 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:48:25,411 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604041716]
[2023-11-29 05:48:25,412 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [604041716] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:25,412 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:25,413 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:48:25,414 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729535826]
[2023-11-29 05:48:25,414 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:25,419 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:48:25,419 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:25,423 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:48:25,423 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:48:25,424 INFO  L87              Difference]: Start difference. First operand 7675 states and 12805 transitions. Second operand  has 7 states, 7 states have (on average 633.4285714285714) internal successors, (4434), 7 states have internal predecessors, (4434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:25,870 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:25,870 INFO  L93              Difference]: Finished difference Result 20850 states and 34793 transitions.
[2023-11-29 05:48:25,870 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:48:25,871 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 633.4285714285714) internal successors, (4434), 7 states have internal predecessors, (4434), 0 states have call successors, (0), 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 4999
[2023-11-29 05:48:25,879 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:25,896 INFO  L225             Difference]: With dead ends: 20850
[2023-11-29 05:48:25,896 INFO  L226             Difference]: Without dead ends: 14261
[2023-11-29 05:48:25,904 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5008 GetRequests, 4996 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:48:25,904 INFO  L413           NwaCegarLoop]: 12789 mSDtfsCounter, 31775 mSDsluCounter, 49726 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31775 SdHoareTripleChecker+Valid, 62515 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:25,905 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31775 Valid, 62515 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:48:25,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14261 states.
[2023-11-29 05:48:26,004 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 7675.
[2023-11-29 05:48:26,011 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7675 states, 7674 states have (on average 1.6686213187385979) internal successors, (12805), 7674 states have internal predecessors, (12805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:26,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7675 states to 7675 states and 12805 transitions.
[2023-11-29 05:48:26,020 INFO  L78                 Accepts]: Start accepts. Automaton has 7675 states and 12805 transitions. Word has length 4999
[2023-11-29 05:48:26,025 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:26,025 INFO  L495      AbstractCegarLoop]: Abstraction has 7675 states and 12805 transitions.
[2023-11-29 05:48:26,026 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 633.4285714285714) internal successors, (4434), 7 states have internal predecessors, (4434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:26,026 INFO  L276                IsEmpty]: Start isEmpty. Operand 7675 states and 12805 transitions.
[2023-11-29 05:48:26,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5001
[2023-11-29 05:48:26,130 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:26,132 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:48:26,193 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 05:48:26,333 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:26,333 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:26,334 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:26,335 INFO  L85        PathProgramCache]: Analyzing trace with hash -808775984, now seen corresponding path program 1 times
[2023-11-29 05:48:26,335 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:26,335 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254850776]
[2023-11-29 05:48:26,336 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:26,336 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:26,736 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:48:26,736 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856442999]
[2023-11-29 05:48:26,738 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:26,738 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:26,738 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:48:26,739 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:48:26,740 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 05:48:31,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:31,900 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22356 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:48:31,997 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:48:32,334 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked.
[2023-11-29 05:48:32,335 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:48:32,335 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:32,335 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254850776]
[2023-11-29 05:48:32,335 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:48:32,335 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856442999]
[2023-11-29 05:48:32,335 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [856442999] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:32,335 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:32,337 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:48:32,337 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265777343]
[2023-11-29 05:48:32,337 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:32,343 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:48:32,344 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:32,348 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:48:32,349 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:48:32,350 INFO  L87              Difference]: Start difference. First operand 7675 states and 12805 transitions. Second operand  has 7 states, 7 states have (on average 633.8571428571429) internal successors, (4437), 7 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:32,808 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:32,809 INFO  L93              Difference]: Finished difference Result 20852 states and 34795 transitions.
[2023-11-29 05:48:32,809 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:48:32,810 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 633.8571428571429) internal successors, (4437), 7 states have internal predecessors, (4437), 0 states have call successors, (0), 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 5000
[2023-11-29 05:48:32,817 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:32,842 INFO  L225             Difference]: With dead ends: 20852
[2023-11-29 05:48:32,843 INFO  L226             Difference]: Without dead ends: 14260
[2023-11-29 05:48:32,852 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5009 GetRequests, 4997 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:48:32,853 INFO  L413           NwaCegarLoop]: 12784 mSDtfsCounter, 31774 mSDsluCounter, 49710 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31774 SdHoareTripleChecker+Valid, 62494 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:32,853 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31774 Valid, 62494 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:48:32,870 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14260 states.
[2023-11-29 05:48:32,997 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14260 to 7677.
[2023-11-29 05:48:33,005 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7677 states, 7676 states have (on average 1.6684471078686816) internal successors, (12807), 7676 states have internal predecessors, (12807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:33,016 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 12807 transitions.
[2023-11-29 05:48:33,016 INFO  L78                 Accepts]: Start accepts. Automaton has 7677 states and 12807 transitions. Word has length 5000
[2023-11-29 05:48:33,021 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:33,021 INFO  L495      AbstractCegarLoop]: Abstraction has 7677 states and 12807 transitions.
[2023-11-29 05:48:33,022 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 633.8571428571429) internal successors, (4437), 7 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:33,022 INFO  L276                IsEmpty]: Start isEmpty. Operand 7677 states and 12807 transitions.
[2023-11-29 05:48:33,170 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5002
[2023-11-29 05:48:33,170 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:33,173 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:48:33,235 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 05:48:33,373 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:33,375 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:33,376 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:33,380 INFO  L85        PathProgramCache]: Analyzing trace with hash 498949478, now seen corresponding path program 1 times
[2023-11-29 05:48:33,381 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:33,381 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119760417]
[2023-11-29 05:48:33,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:33,383 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:33,783 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:48:33,783 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748916045]
[2023-11-29 05:48:33,784 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:33,784 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:33,784 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:48:33,785 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:48:33,786 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 05:48:38,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:38,968 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22359 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:48:39,034 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:48:39,326 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked.
[2023-11-29 05:48:39,326 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:48:39,327 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:39,327 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119760417]
[2023-11-29 05:48:39,327 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:48:39,327 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748916045]
[2023-11-29 05:48:39,327 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748916045] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:39,327 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:39,329 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:48:39,329 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370898526]
[2023-11-29 05:48:39,329 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:39,335 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:48:39,335 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:39,340 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:48:39,340 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:48:39,342 INFO  L87              Difference]: Start difference. First operand 7677 states and 12807 transitions. Second operand  has 7 states, 7 states have (on average 634.2857142857143) internal successors, (4440), 7 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:39,763 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:39,763 INFO  L93              Difference]: Finished difference Result 20858 states and 34801 transitions.
[2023-11-29 05:48:39,763 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:48:39,764 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 634.2857142857143) internal successors, (4440), 7 states have internal predecessors, (4440), 0 states have call successors, (0), 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 5001
[2023-11-29 05:48:39,769 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:39,789 INFO  L225             Difference]: With dead ends: 20858
[2023-11-29 05:48:39,789 INFO  L226             Difference]: Without dead ends: 14261
[2023-11-29 05:48:39,797 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5010 GetRequests, 4998 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:48:39,797 INFO  L413           NwaCegarLoop]: 12779 mSDtfsCounter, 31773 mSDsluCounter, 49695 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31773 SdHoareTripleChecker+Valid, 62474 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:39,798 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31773 Valid, 62474 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:48:39,816 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14261 states.
[2023-11-29 05:48:39,939 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 7679.
[2023-11-29 05:48:39,947 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7679 states, 7678 states have (on average 1.6682729877572284) internal successors, (12809), 7678 states have internal predecessors, (12809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:39,957 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7679 states to 7679 states and 12809 transitions.
[2023-11-29 05:48:39,957 INFO  L78                 Accepts]: Start accepts. Automaton has 7679 states and 12809 transitions. Word has length 5001
[2023-11-29 05:48:39,961 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:39,961 INFO  L495      AbstractCegarLoop]: Abstraction has 7679 states and 12809 transitions.
[2023-11-29 05:48:39,963 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 634.2857142857143) internal successors, (4440), 7 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:39,963 INFO  L276                IsEmpty]: Start isEmpty. Operand 7679 states and 12809 transitions.
[2023-11-29 05:48:40,104 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5003
[2023-11-29 05:48:40,104 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:40,106 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:48:40,164 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 05:48:40,307 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:40,307 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:40,307 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:40,309 INFO  L85        PathProgramCache]: Analyzing trace with hash 2122523318, now seen corresponding path program 1 times
[2023-11-29 05:48:40,310 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:40,310 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887030670]
[2023-11-29 05:48:40,310 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:40,310 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:40,673 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:48:40,673 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112644049]
[2023-11-29 05:48:40,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:40,674 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:40,674 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:48:40,674 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:48:40,675 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 05:48:45,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:45,910 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22362 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:48:45,977 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:48:46,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked.
[2023-11-29 05:48:46,356 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:48:46,356 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:46,356 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887030670]
[2023-11-29 05:48:46,356 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:48:46,356 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112644049]
[2023-11-29 05:48:46,356 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112644049] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:46,356 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:46,357 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:48:46,358 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443590617]
[2023-11-29 05:48:46,358 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:46,364 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:48:46,364 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:46,367 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:48:46,368 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:48:46,369 INFO  L87              Difference]: Start difference. First operand 7679 states and 12809 transitions. Second operand  has 7 states, 7 states have (on average 634.7142857142857) internal successors, (4443), 7 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:46,785 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:46,785 INFO  L93              Difference]: Finished difference Result 20864 states and 34807 transitions.
[2023-11-29 05:48:46,786 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:48:46,787 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 634.7142857142857) internal successors, (4443), 7 states have internal predecessors, (4443), 0 states have call successors, (0), 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 5002
[2023-11-29 05:48:46,791 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:46,804 INFO  L225             Difference]: With dead ends: 20864
[2023-11-29 05:48:46,804 INFO  L226             Difference]: Without dead ends: 14262
[2023-11-29 05:48:46,812 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5011 GetRequests, 4999 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:48:46,813 INFO  L413           NwaCegarLoop]: 12774 mSDtfsCounter, 31772 mSDsluCounter, 49680 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31772 SdHoareTripleChecker+Valid, 62454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:46,813 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31772 Valid, 62454 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:48:46,827 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14262 states.
[2023-11-29 05:48:46,913 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14262 to 7681.
[2023-11-29 05:48:46,920 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7681 states, 7680 states have (on average 1.6680989583333334) internal successors, (12811), 7680 states have internal predecessors, (12811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:46,929 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7681 states to 7681 states and 12811 transitions.
[2023-11-29 05:48:46,929 INFO  L78                 Accepts]: Start accepts. Automaton has 7681 states and 12811 transitions. Word has length 5002
[2023-11-29 05:48:46,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:46,932 INFO  L495      AbstractCegarLoop]: Abstraction has 7681 states and 12811 transitions.
[2023-11-29 05:48:46,933 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 634.7142857142857) internal successors, (4443), 7 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:46,933 INFO  L276                IsEmpty]: Start isEmpty. Operand 7681 states and 12811 transitions.
[2023-11-29 05:48:47,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5004
[2023-11-29 05:48:47,036 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:47,039 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:48:47,112 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 05:48:47,240 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 05:48:47,240 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:47,241 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:47,242 INFO  L85        PathProgramCache]: Analyzing trace with hash 3813378, now seen corresponding path program 1 times
[2023-11-29 05:48:47,242 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:47,242 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421769537]
[2023-11-29 05:48:47,243 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:47,243 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:47,619 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:48:47,619 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889878054]
[2023-11-29 05:48:47,620 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:47,620 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:47,620 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:48:47,621 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:48:47,622 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 05:48:52,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:52,685 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22366 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:48:52,753 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:48:52,980 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked.
[2023-11-29 05:48:52,981 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:48:52,981 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:52,981 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421769537]
[2023-11-29 05:48:52,981 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:48:52,981 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889878054]
[2023-11-29 05:48:52,981 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889878054] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:52,981 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:52,983 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:48:52,983 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077923438]
[2023-11-29 05:48:52,983 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:52,986 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:48:52,987 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:52,990 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:48:52,990 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:48:52,991 INFO  L87              Difference]: Start difference. First operand 7681 states and 12811 transitions. Second operand  has 7 states, 7 states have (on average 635.1428571428571) internal successors, (4446), 7 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:53,485 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:53,485 INFO  L93              Difference]: Finished difference Result 20870 states and 34813 transitions.
[2023-11-29 05:48:53,486 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:48:53,487 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 635.1428571428571) internal successors, (4446), 7 states have internal predecessors, (4446), 0 states have call successors, (0), 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 5003
[2023-11-29 05:48:53,490 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:53,500 INFO  L225             Difference]: With dead ends: 20870
[2023-11-29 05:48:53,500 INFO  L226             Difference]: Without dead ends: 14263
[2023-11-29 05:48:53,506 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5012 GetRequests, 5000 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:48:53,506 INFO  L413           NwaCegarLoop]: 12769 mSDtfsCounter, 31771 mSDsluCounter, 49665 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31771 SdHoareTripleChecker+Valid, 62434 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:53,506 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31771 Valid, 62434 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:48:53,520 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14263 states.
[2023-11-29 05:48:53,616 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14263 to 7683.
[2023-11-29 05:48:53,625 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7683 states, 7682 states have (on average 1.667925019526165) internal successors, (12813), 7682 states have internal predecessors, (12813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:53,636 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 12813 transitions.
[2023-11-29 05:48:53,636 INFO  L78                 Accepts]: Start accepts. Automaton has 7683 states and 12813 transitions. Word has length 5003
[2023-11-29 05:48:53,640 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:53,640 INFO  L495      AbstractCegarLoop]: Abstraction has 7683 states and 12813 transitions.
[2023-11-29 05:48:53,641 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 635.1428571428571) internal successors, (4446), 7 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:53,641 INFO  L276                IsEmpty]: Start isEmpty. Operand 7683 states and 12813 transitions.
[2023-11-29 05:48:53,769 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5005
[2023-11-29 05:48:53,769 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:53,772 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:48:53,852 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 05:48:53,977 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 05:48:53,977 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:53,978 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:53,979 INFO  L85        PathProgramCache]: Analyzing trace with hash -1689818082, now seen corresponding path program 1 times
[2023-11-29 05:48:53,979 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:53,979 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050897202]
[2023-11-29 05:48:53,980 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:53,980 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:54,380 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:48:54,380 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664303807]
[2023-11-29 05:48:54,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:54,382 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:54,382 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:48:54,383 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:48:54,384 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 05:48:59,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:59,519 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22369 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:48:59,586 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:48:59,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked.
[2023-11-29 05:48:59,829 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:48:59,829 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:59,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050897202]
[2023-11-29 05:48:59,829 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:48:59,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664303807]
[2023-11-29 05:48:59,829 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664303807] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:59,829 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:59,831 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:48:59,831 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485328908]
[2023-11-29 05:48:59,831 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:59,835 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:48:59,835 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:59,838 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:48:59,838 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:48:59,839 INFO  L87              Difference]: Start difference. First operand 7683 states and 12813 transitions. Second operand  has 7 states, 7 states have (on average 635.5714285714286) internal successors, (4449), 7 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:00,245 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:49:00,245 INFO  L93              Difference]: Finished difference Result 20876 states and 34819 transitions.
[2023-11-29 05:49:00,245 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:49:00,247 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 635.5714285714286) internal successors, (4449), 7 states have internal predecessors, (4449), 0 states have call successors, (0), 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 5004
[2023-11-29 05:49:00,251 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:49:00,261 INFO  L225             Difference]: With dead ends: 20876
[2023-11-29 05:49:00,261 INFO  L226             Difference]: Without dead ends: 14264
[2023-11-29 05:49:00,266 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5013 GetRequests, 5001 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:49:00,267 INFO  L413           NwaCegarLoop]: 12764 mSDtfsCounter, 31770 mSDsluCounter, 49650 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31770 SdHoareTripleChecker+Valid, 62414 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:49:00,267 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31770 Valid, 62414 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:49:00,279 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14264 states.
[2023-11-29 05:49:00,365 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14264 to 7685.
[2023-11-29 05:49:00,372 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7685 states, 7684 states have (on average 1.6677511712649662) internal successors, (12815), 7684 states have internal predecessors, (12815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:00,385 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 12815 transitions.
[2023-11-29 05:49:00,385 INFO  L78                 Accepts]: Start accepts. Automaton has 7685 states and 12815 transitions. Word has length 5004
[2023-11-29 05:49:00,389 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:49:00,389 INFO  L495      AbstractCegarLoop]: Abstraction has 7685 states and 12815 transitions.
[2023-11-29 05:49:00,391 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 635.5714285714286) internal successors, (4449), 7 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:00,391 INFO  L276                IsEmpty]: Start isEmpty. Operand 7685 states and 12815 transitions.
[2023-11-29 05:49:00,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5006
[2023-11-29 05:49:00,565 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:49:00,568 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:49:00,651 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 05:49:00,769 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:00,769 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:49:00,770 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:49:00,771 INFO  L85        PathProgramCache]: Analyzing trace with hash -170697444, now seen corresponding path program 1 times
[2023-11-29 05:49:00,771 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:49:00,771 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629005117]
[2023-11-29 05:49:00,772 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:00,772 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:49:01,174 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:49:01,174 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719471451]
[2023-11-29 05:49:01,175 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:01,176 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:01,176 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:01,177 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:49:01,180 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 05:49:06,081 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:49:06,227 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22372 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:49:06,294 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:49:06,533 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked.
[2023-11-29 05:49:06,533 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:49:06,533 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:49:06,534 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629005117]
[2023-11-29 05:49:06,534 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:49:06,534 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719471451]
[2023-11-29 05:49:06,534 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719471451] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:49:06,534 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:49:06,536 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:49:06,536 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736906763]
[2023-11-29 05:49:06,536 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:49:06,539 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:49:06,540 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:49:06,543 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:49:06,543 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:49:06,544 INFO  L87              Difference]: Start difference. First operand 7685 states and 12815 transitions. Second operand  has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:07,042 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:49:07,042 INFO  L93              Difference]: Finished difference Result 20882 states and 34825 transitions.
[2023-11-29 05:49:07,042 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:49:07,043 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 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 5005
[2023-11-29 05:49:07,047 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:49:07,055 INFO  L225             Difference]: With dead ends: 20882
[2023-11-29 05:49:07,055 INFO  L226             Difference]: Without dead ends: 14265
[2023-11-29 05:49:07,059 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5014 GetRequests, 5002 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:49:07,059 INFO  L413           NwaCegarLoop]: 12759 mSDtfsCounter, 31769 mSDsluCounter, 49635 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31769 SdHoareTripleChecker+Valid, 62394 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:49:07,059 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31769 Valid, 62394 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:49:07,071 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14265 states.
[2023-11-29 05:49:07,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14265 to 7687.
[2023-11-29 05:49:07,143 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7687 states, 7686 states have (on average 1.6675774134790529) internal successors, (12817), 7686 states have internal predecessors, (12817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:07,150 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7687 states to 7687 states and 12817 transitions.
[2023-11-29 05:49:07,151 INFO  L78                 Accepts]: Start accepts. Automaton has 7687 states and 12817 transitions. Word has length 5005
[2023-11-29 05:49:07,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:49:07,153 INFO  L495      AbstractCegarLoop]: Abstraction has 7687 states and 12817 transitions.
[2023-11-29 05:49:07,154 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:07,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 7687 states and 12817 transitions.
[2023-11-29 05:49:07,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5007
[2023-11-29 05:49:07,251 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:49:07,253 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:49:07,329 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 05:49:07,453 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 05:49:07,454 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:49:07,454 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:49:07,456 INFO  L85        PathProgramCache]: Analyzing trace with hash 1414349828, now seen corresponding path program 1 times
[2023-11-29 05:49:07,456 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:49:07,456 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247264826]
[2023-11-29 05:49:07,457 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:07,457 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:49:07,827 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:49:07,827 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285751320]
[2023-11-29 05:49:07,828 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:07,828 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:07,829 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:07,829 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:49:07,830 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 05:49:12,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:49:12,911 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22375 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:49:12,978 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:49:13,223 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked.
[2023-11-29 05:49:13,223 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:49:13,223 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:49:13,223 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247264826]
[2023-11-29 05:49:13,223 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:49:13,223 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285751320]
[2023-11-29 05:49:13,223 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285751320] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:49:13,224 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:49:13,225 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:49:13,226 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034431283]
[2023-11-29 05:49:13,226 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:49:13,229 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:49:13,229 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:49:13,232 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:49:13,232 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:49:13,234 INFO  L87              Difference]: Start difference. First operand 7687 states and 12817 transitions. Second operand  has 7 states, 7 states have (on average 636.4285714285714) internal successors, (4455), 7 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:13,646 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:49:13,647 INFO  L93              Difference]: Finished difference Result 20888 states and 34831 transitions.
[2023-11-29 05:49:13,647 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:49:13,648 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 636.4285714285714) internal successors, (4455), 7 states have internal predecessors, (4455), 0 states have call successors, (0), 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 5006
[2023-11-29 05:49:13,652 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:49:13,665 INFO  L225             Difference]: With dead ends: 20888
[2023-11-29 05:49:13,665 INFO  L226             Difference]: Without dead ends: 14266
[2023-11-29 05:49:13,671 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5015 GetRequests, 5003 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:49:13,672 INFO  L413           NwaCegarLoop]: 12754 mSDtfsCounter, 31768 mSDsluCounter, 49620 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31768 SdHoareTripleChecker+Valid, 62374 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:49:13,672 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31768 Valid, 62374 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:49:13,685 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14266 states.
[2023-11-29 05:49:13,753 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14266 to 7689.
[2023-11-29 05:49:13,760 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7689 states, 7688 states have (on average 1.6674037460978148) internal successors, (12819), 7688 states have internal predecessors, (12819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:13,768 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7689 states to 7689 states and 12819 transitions.
[2023-11-29 05:49:13,768 INFO  L78                 Accepts]: Start accepts. Automaton has 7689 states and 12819 transitions. Word has length 5006
[2023-11-29 05:49:13,770 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:49:13,771 INFO  L495      AbstractCegarLoop]: Abstraction has 7689 states and 12819 transitions.
[2023-11-29 05:49:13,771 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 636.4285714285714) internal successors, (4455), 7 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:13,772 INFO  L276                IsEmpty]: Start isEmpty. Operand 7689 states and 12819 transitions.
[2023-11-29 05:49:13,869 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5008
[2023-11-29 05:49:13,869 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:49:13,871 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:49:13,937 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 05:49:14,072 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:14,072 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:49:14,072 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:49:14,074 INFO  L85        PathProgramCache]: Analyzing trace with hash -642754376, now seen corresponding path program 1 times
[2023-11-29 05:49:14,074 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:49:14,074 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498877330]
[2023-11-29 05:49:14,075 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:14,075 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:49:14,438 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:49:14,438 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835355919]
[2023-11-29 05:49:14,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:14,439 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:14,439 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:14,440 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:49:14,441 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 05:49:19,375 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:49:19,515 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22379 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:49:19,581 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:49:19,809 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked.
[2023-11-29 05:49:19,809 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:49:19,809 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:49:19,809 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498877330]
[2023-11-29 05:49:19,809 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:49:19,809 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835355919]
[2023-11-29 05:49:19,809 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835355919] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:49:19,809 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:49:19,811 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:49:19,811 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602802724]
[2023-11-29 05:49:19,811 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:49:19,815 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:49:19,815 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:49:19,818 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:49:19,819 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:49:19,820 INFO  L87              Difference]: Start difference. First operand 7689 states and 12819 transitions. Second operand  has 7 states, 7 states have (on average 636.8571428571429) internal successors, (4458), 7 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:20,204 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:49:20,204 INFO  L93              Difference]: Finished difference Result 20894 states and 34837 transitions.
[2023-11-29 05:49:20,204 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:49:20,205 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 636.8571428571429) internal successors, (4458), 7 states have internal predecessors, (4458), 0 states have call successors, (0), 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 5007
[2023-11-29 05:49:20,209 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:49:20,219 INFO  L225             Difference]: With dead ends: 20894
[2023-11-29 05:49:20,219 INFO  L226             Difference]: Without dead ends: 14267
[2023-11-29 05:49:20,224 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5016 GetRequests, 5004 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:49:20,225 INFO  L413           NwaCegarLoop]: 12749 mSDtfsCounter, 31767 mSDsluCounter, 49605 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31767 SdHoareTripleChecker+Valid, 62354 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:49:20,225 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31767 Valid, 62354 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:49:20,238 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14267 states.
[2023-11-29 05:49:20,447 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14267 to 7691.
[2023-11-29 05:49:20,455 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7691 states, 7690 states have (on average 1.6672301690507152) internal successors, (12821), 7690 states have internal predecessors, (12821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:20,466 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7691 states to 7691 states and 12821 transitions.
[2023-11-29 05:49:20,466 INFO  L78                 Accepts]: Start accepts. Automaton has 7691 states and 12821 transitions. Word has length 5007
[2023-11-29 05:49:20,468 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:49:20,469 INFO  L495      AbstractCegarLoop]: Abstraction has 7691 states and 12821 transitions.
[2023-11-29 05:49:20,469 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 636.8571428571429) internal successors, (4458), 7 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:20,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 7691 states and 12821 transitions.
[2023-11-29 05:49:20,566 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5009
[2023-11-29 05:49:20,566 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:49:20,568 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:49:20,628 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 05:49:20,768 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:20,769 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:49:20,769 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:49:20,770 INFO  L85        PathProgramCache]: Analyzing trace with hash -1420173716, now seen corresponding path program 1 times
[2023-11-29 05:49:20,770 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:49:20,770 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569900089]
[2023-11-29 05:49:20,770 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:20,770 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:49:21,133 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:49:21,133 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405842556]
[2023-11-29 05:49:21,134 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:21,134 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:21,134 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:21,135 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:49:21,136 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 05:49:26,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:49:26,168 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22382 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:49:26,228 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:49:26,457 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked.
[2023-11-29 05:49:26,457 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:49:26,457 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:49:26,457 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569900089]
[2023-11-29 05:49:26,457 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:49:26,457 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405842556]
[2023-11-29 05:49:26,457 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405842556] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:49:26,457 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:49:26,459 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:49:26,459 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543182730]
[2023-11-29 05:49:26,459 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:49:26,461 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:49:26,461 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:49:26,464 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:49:26,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:49:26,465 INFO  L87              Difference]: Start difference. First operand 7691 states and 12821 transitions. Second operand  has 7 states, 7 states have (on average 637.2857142857143) internal successors, (4461), 7 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:26,850 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:49:26,850 INFO  L93              Difference]: Finished difference Result 20900 states and 34843 transitions.
[2023-11-29 05:49:26,851 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:49:26,852 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 637.2857142857143) internal successors, (4461), 7 states have internal predecessors, (4461), 0 states have call successors, (0), 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 5008
[2023-11-29 05:49:26,856 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:49:26,866 INFO  L225             Difference]: With dead ends: 20900
[2023-11-29 05:49:26,866 INFO  L226             Difference]: Without dead ends: 14268
[2023-11-29 05:49:26,872 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5017 GetRequests, 5005 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:49:26,873 INFO  L413           NwaCegarLoop]: 12744 mSDtfsCounter, 31766 mSDsluCounter, 49590 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31766 SdHoareTripleChecker+Valid, 62334 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:49:26,873 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31766 Valid, 62334 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:49:26,889 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14268 states.
[2023-11-29 05:49:26,957 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14268 to 7693.
[2023-11-29 05:49:26,964 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7693 states, 7692 states have (on average 1.6670566822672908) internal successors, (12823), 7692 states have internal predecessors, (12823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:26,972 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 12823 transitions.
[2023-11-29 05:49:26,972 INFO  L78                 Accepts]: Start accepts. Automaton has 7693 states and 12823 transitions. Word has length 5008
[2023-11-29 05:49:26,975 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:49:26,975 INFO  L495      AbstractCegarLoop]: Abstraction has 7693 states and 12823 transitions.
[2023-11-29 05:49:26,976 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 637.2857142857143) internal successors, (4461), 7 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:26,976 INFO  L276                IsEmpty]: Start isEmpty. Operand 7693 states and 12823 transitions.
[2023-11-29 05:49:27,074 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5010
[2023-11-29 05:49:27,074 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:49:27,075 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:49:27,137 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 05:49:27,275 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 05:49:27,276 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:49:27,276 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:49:27,277 INFO  L85        PathProgramCache]: Analyzing trace with hash 997138898, now seen corresponding path program 1 times
[2023-11-29 05:49:27,277 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:49:27,277 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796276989]
[2023-11-29 05:49:27,277 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:27,278 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:49:27,637 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:49:27,637 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176469370]
[2023-11-29 05:49:27,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:27,638 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:27,638 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:27,639 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:49:27,640 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 05:49:32,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:49:32,923 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22385 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:49:32,979 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:49:33,200 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked.
[2023-11-29 05:49:33,200 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:49:33,200 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:49:33,200 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796276989]
[2023-11-29 05:49:33,200 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:49:33,200 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176469370]
[2023-11-29 05:49:33,201 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [176469370] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:49:33,201 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:49:33,202 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:49:33,202 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221990020]
[2023-11-29 05:49:33,202 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:49:33,205 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:49:33,205 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:49:33,208 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:49:33,208 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:49:33,210 INFO  L87              Difference]: Start difference. First operand 7693 states and 12823 transitions. Second operand  has 7 states, 7 states have (on average 637.7142857142857) internal successors, (4464), 7 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:33,600 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:49:33,600 INFO  L93              Difference]: Finished difference Result 20906 states and 34849 transitions.
[2023-11-29 05:49:33,600 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:49:33,601 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 637.7142857142857) internal successors, (4464), 7 states have internal predecessors, (4464), 0 states have call successors, (0), 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 5009
[2023-11-29 05:49:33,605 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:49:33,615 INFO  L225             Difference]: With dead ends: 20906
[2023-11-29 05:49:33,615 INFO  L226             Difference]: Without dead ends: 14269
[2023-11-29 05:49:33,620 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5018 GetRequests, 5006 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:49:33,621 INFO  L413           NwaCegarLoop]: 12739 mSDtfsCounter, 31765 mSDsluCounter, 49575 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31765 SdHoareTripleChecker+Valid, 62314 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:49:33,621 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31765 Valid, 62314 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:49:33,634 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14269 states.
[2023-11-29 05:49:33,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14269 to 7695.
[2023-11-29 05:49:33,714 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7695 states, 7694 states have (on average 1.666883285677151) internal successors, (12825), 7694 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:33,722 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7695 states to 7695 states and 12825 transitions.
[2023-11-29 05:49:33,722 INFO  L78                 Accepts]: Start accepts. Automaton has 7695 states and 12825 transitions. Word has length 5009
[2023-11-29 05:49:33,725 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:49:33,725 INFO  L495      AbstractCegarLoop]: Abstraction has 7695 states and 12825 transitions.
[2023-11-29 05:49:33,726 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 637.7142857142857) internal successors, (4464), 7 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:33,726 INFO  L276                IsEmpty]: Start isEmpty. Operand 7695 states and 12825 transitions.
[2023-11-29 05:49:33,824 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5011
[2023-11-29 05:49:33,824 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:49:33,826 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:49:33,890 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 05:49:34,026 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:34,026 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:49:34,027 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:49:34,027 INFO  L85        PathProgramCache]: Analyzing trace with hash -1758922158, now seen corresponding path program 1 times
[2023-11-29 05:49:34,027 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:49:34,027 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105612444]
[2023-11-29 05:49:34,028 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:34,028 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:49:34,392 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:49:34,392 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027449407]
[2023-11-29 05:49:34,393 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:34,393 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:34,393 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:34,394 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:49:34,395 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 05:49:39,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:49:39,390 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22388 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:49:39,447 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:49:39,682 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2023-11-29 05:49:39,682 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:49:39,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:49:39,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105612444]
[2023-11-29 05:49:39,683 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:49:39,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027449407]
[2023-11-29 05:49:39,683 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027449407] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:49:39,683 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:49:39,685 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:49:39,685 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188292447]
[2023-11-29 05:49:39,685 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:49:39,687 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:49:39,687 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:49:39,690 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:49:39,690 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:49:39,692 INFO  L87              Difference]: Start difference. First operand 7695 states and 12825 transitions. Second operand  has 7 states, 7 states have (on average 638.1428571428571) internal successors, (4467), 7 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:40,224 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:49:40,224 INFO  L93              Difference]: Finished difference Result 20912 states and 34855 transitions.
[2023-11-29 05:49:40,224 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:49:40,225 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 638.1428571428571) internal successors, (4467), 7 states have internal predecessors, (4467), 0 states have call successors, (0), 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 5010
[2023-11-29 05:49:40,228 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:49:40,237 INFO  L225             Difference]: With dead ends: 20912
[2023-11-29 05:49:40,238 INFO  L226             Difference]: Without dead ends: 14270
[2023-11-29 05:49:40,242 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5019 GetRequests, 5007 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:49:40,243 INFO  L413           NwaCegarLoop]: 12734 mSDtfsCounter, 31764 mSDsluCounter, 49560 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31764 SdHoareTripleChecker+Valid, 62294 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:49:40,243 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31764 Valid, 62294 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:49:40,255 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14270 states.
[2023-11-29 05:49:40,328 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14270 to 7697.
[2023-11-29 05:49:40,334 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7697 states, 7696 states have (on average 1.6667099792099793) internal successors, (12827), 7696 states have internal predecessors, (12827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:40,342 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 12827 transitions.
[2023-11-29 05:49:40,343 INFO  L78                 Accepts]: Start accepts. Automaton has 7697 states and 12827 transitions. Word has length 5010
[2023-11-29 05:49:40,345 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:49:40,345 INFO  L495      AbstractCegarLoop]: Abstraction has 7697 states and 12827 transitions.
[2023-11-29 05:49:40,346 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 638.1428571428571) internal successors, (4467), 7 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:40,346 INFO  L276                IsEmpty]: Start isEmpty. Operand 7697 states and 12827 transitions.
[2023-11-29 05:49:40,462 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5012
[2023-11-29 05:49:40,462 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:49:40,463 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:49:40,522 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 05:49:40,663 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 05:49:40,664 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:49:40,664 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:49:40,665 INFO  L85        PathProgramCache]: Analyzing trace with hash -1981462930, now seen corresponding path program 1 times
[2023-11-29 05:49:40,665 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:49:40,665 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521775155]
[2023-11-29 05:49:40,665 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:40,665 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:49:41,016 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:49:41,016 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727171900]
[2023-11-29 05:49:41,017 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:41,017 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:41,018 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:41,018 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:49:41,019 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 05:49:45,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:49:46,000 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22392 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:49:46,056 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:49:46,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked.
[2023-11-29 05:49:46,291 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:49:46,291 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:49:46,292 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521775155]
[2023-11-29 05:49:46,292 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:49:46,292 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727171900]
[2023-11-29 05:49:46,292 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727171900] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:49:46,292 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:49:46,293 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:49:46,293 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093497246]
[2023-11-29 05:49:46,293 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:49:46,295 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:49:46,295 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:49:46,298 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:49:46,298 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:49:46,299 INFO  L87              Difference]: Start difference. First operand 7697 states and 12827 transitions. Second operand  has 7 states, 7 states have (on average 638.5714285714286) internal successors, (4470), 7 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:46,688 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:49:46,688 INFO  L93              Difference]: Finished difference Result 20918 states and 34861 transitions.
[2023-11-29 05:49:46,688 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:49:46,689 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 638.5714285714286) internal successors, (4470), 7 states have internal predecessors, (4470), 0 states have call successors, (0), 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 5011
[2023-11-29 05:49:46,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:49:46,702 INFO  L225             Difference]: With dead ends: 20918
[2023-11-29 05:49:46,703 INFO  L226             Difference]: Without dead ends: 14271
[2023-11-29 05:49:46,708 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5020 GetRequests, 5008 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:49:46,708 INFO  L413           NwaCegarLoop]: 12729 mSDtfsCounter, 31763 mSDsluCounter, 49545 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31763 SdHoareTripleChecker+Valid, 62274 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:49:46,708 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31763 Valid, 62274 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:49:46,719 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14271 states.
[2023-11-29 05:49:46,782 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14271 to 7699.
[2023-11-29 05:49:46,788 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7699 states, 7698 states have (on average 1.6665367627955312) internal successors, (12829), 7698 states have internal predecessors, (12829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:46,797 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 12829 transitions.
[2023-11-29 05:49:46,797 INFO  L78                 Accepts]: Start accepts. Automaton has 7699 states and 12829 transitions. Word has length 5011
[2023-11-29 05:49:46,800 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:49:46,800 INFO  L495      AbstractCegarLoop]: Abstraction has 7699 states and 12829 transitions.
[2023-11-29 05:49:46,801 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 638.5714285714286) internal successors, (4470), 7 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:46,801 INFO  L276                IsEmpty]: Start isEmpty. Operand 7699 states and 12829 transitions.
[2023-11-29 05:49:46,900 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5013
[2023-11-29 05:49:46,900 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:49:46,901 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:49:46,968 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 05:49:47,102 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:47,102 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:49:47,102 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:49:47,103 INFO  L85        PathProgramCache]: Analyzing trace with hash -1708268102, now seen corresponding path program 1 times
[2023-11-29 05:49:47,103 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:49:47,103 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039840899]
[2023-11-29 05:49:47,104 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:47,104 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:49:47,466 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:49:47,466 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696220772]
[2023-11-29 05:49:47,467 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:47,467 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:47,467 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:47,468 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:49:47,469 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 05:49:52,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:49:52,572 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22395 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:49:52,629 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:49:52,855 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked.
[2023-11-29 05:49:52,855 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:49:52,855 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:49:52,855 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039840899]
[2023-11-29 05:49:52,855 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:49:52,855 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696220772]
[2023-11-29 05:49:52,855 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [696220772] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:49:52,855 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:49:52,857 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:49:52,857 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89183862]
[2023-11-29 05:49:52,857 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:49:52,860 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:49:52,860 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:49:52,862 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:49:52,862 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:49:52,863 INFO  L87              Difference]: Start difference. First operand 7699 states and 12829 transitions. Second operand  has 7 states, 7 states have (on average 639.0) internal successors, (4473), 7 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:53,392 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:49:53,392 INFO  L93              Difference]: Finished difference Result 20924 states and 34867 transitions.
[2023-11-29 05:49:53,393 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:49:53,394 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 639.0) internal successors, (4473), 7 states have internal predecessors, (4473), 0 states have call successors, (0), 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 5012
[2023-11-29 05:49:53,397 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:49:53,405 INFO  L225             Difference]: With dead ends: 20924
[2023-11-29 05:49:53,405 INFO  L226             Difference]: Without dead ends: 14272
[2023-11-29 05:49:53,408 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5021 GetRequests, 5009 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:49:53,408 INFO  L413           NwaCegarLoop]: 12724 mSDtfsCounter, 31762 mSDsluCounter, 49530 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31762 SdHoareTripleChecker+Valid, 62254 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:49:53,409 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31762 Valid, 62254 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:49:53,419 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14272 states.
[2023-11-29 05:49:53,482 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14272 to 7701.
[2023-11-29 05:49:53,489 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7701 states, 7700 states have (on average 1.6663636363636363) internal successors, (12831), 7700 states have internal predecessors, (12831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:53,498 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7701 states to 7701 states and 12831 transitions.
[2023-11-29 05:49:53,498 INFO  L78                 Accepts]: Start accepts. Automaton has 7701 states and 12831 transitions. Word has length 5012
[2023-11-29 05:49:53,500 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:49:53,500 INFO  L495      AbstractCegarLoop]: Abstraction has 7701 states and 12831 transitions.
[2023-11-29 05:49:53,501 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 639.0) internal successors, (4473), 7 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:53,501 INFO  L276                IsEmpty]: Start isEmpty. Operand 7701 states and 12831 transitions.
[2023-11-29 05:49:53,598 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5014
[2023-11-29 05:49:53,598 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:49:53,599 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:49:53,658 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 05:49:53,800 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:53,800 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:49:53,800 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:49:53,801 INFO  L85        PathProgramCache]: Analyzing trace with hash 198060936, now seen corresponding path program 1 times
[2023-11-29 05:49:53,801 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:49:53,801 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659183254]
[2023-11-29 05:49:53,802 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:53,802 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:49:54,152 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:49:54,152 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624316731]
[2023-11-29 05:49:54,153 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:54,153 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:54,153 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:54,154 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:49:54,156 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 05:49:59,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:49:59,399 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22398 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:49:59,457 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:49:59,728 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked.
[2023-11-29 05:49:59,728 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:49:59,729 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:49:59,729 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659183254]
[2023-11-29 05:49:59,729 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:49:59,729 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624316731]
[2023-11-29 05:49:59,729 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624316731] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:49:59,729 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:49:59,731 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:49:59,731 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029065324]
[2023-11-29 05:49:59,731 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:49:59,734 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:49:59,734 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:49:59,737 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:49:59,737 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:49:59,738 INFO  L87              Difference]: Start difference. First operand 7701 states and 12831 transitions. Second operand  has 7 states, 7 states have (on average 639.4285714285714) internal successors, (4476), 7 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:00,146 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:00,146 INFO  L93              Difference]: Finished difference Result 20930 states and 34873 transitions.
[2023-11-29 05:50:00,146 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:50:00,147 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 639.4285714285714) internal successors, (4476), 7 states have internal predecessors, (4476), 0 states have call successors, (0), 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 5013
[2023-11-29 05:50:00,151 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:00,162 INFO  L225             Difference]: With dead ends: 20930
[2023-11-29 05:50:00,162 INFO  L226             Difference]: Without dead ends: 14273
[2023-11-29 05:50:00,167 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5022 GetRequests, 5010 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:50:00,168 INFO  L413           NwaCegarLoop]: 12719 mSDtfsCounter, 31761 mSDsluCounter, 49515 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31761 SdHoareTripleChecker+Valid, 62234 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:00,168 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31761 Valid, 62234 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:50:00,180 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14273 states.
[2023-11-29 05:50:00,247 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 7703.
[2023-11-29 05:50:00,254 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7703 states, 7702 states have (on average 1.6661905998441964) internal successors, (12833), 7702 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:00,262 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7703 states to 7703 states and 12833 transitions.
[2023-11-29 05:50:00,262 INFO  L78                 Accepts]: Start accepts. Automaton has 7703 states and 12833 transitions. Word has length 5013
[2023-11-29 05:50:00,265 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:00,265 INFO  L495      AbstractCegarLoop]: Abstraction has 7703 states and 12833 transitions.
[2023-11-29 05:50:00,266 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 639.4285714285714) internal successors, (4476), 7 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:00,266 INFO  L276                IsEmpty]: Start isEmpty. Operand 7703 states and 12833 transitions.
[2023-11-29 05:50:00,372 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5015
[2023-11-29 05:50:00,372 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:00,374 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:50:00,435 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 05:50:00,574 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:00,574 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:00,575 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:00,576 INFO  L85        PathProgramCache]: Analyzing trace with hash 658621856, now seen corresponding path program 1 times
[2023-11-29 05:50:00,576 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:00,576 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588424965]
[2023-11-29 05:50:00,576 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:00,576 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:00,934 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:50:00,934 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749733238]
[2023-11-29 05:50:00,935 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:00,935 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:00,935 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:50:00,936 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:50:00,937 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 05:50:05,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:06,022 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22401 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:50:06,075 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:50:06,298 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked.
[2023-11-29 05:50:06,298 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:50:06,298 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:06,298 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588424965]
[2023-11-29 05:50:06,298 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:50:06,298 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749733238]
[2023-11-29 05:50:06,298 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749733238] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:06,298 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:06,300 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:50:06,300 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911918462]
[2023-11-29 05:50:06,301 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:06,303 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:50:06,303 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:06,305 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:50:06,305 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:50:06,306 INFO  L87              Difference]: Start difference. First operand 7703 states and 12833 transitions. Second operand  has 7 states, 7 states have (on average 639.8571428571429) internal successors, (4479), 7 states have internal predecessors, (4479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:06,681 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:06,681 INFO  L93              Difference]: Finished difference Result 20936 states and 34879 transitions.
[2023-11-29 05:50:06,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:50:06,683 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 639.8571428571429) internal successors, (4479), 7 states have internal predecessors, (4479), 0 states have call successors, (0), 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 5014
[2023-11-29 05:50:06,686 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:06,847 INFO  L225             Difference]: With dead ends: 20936
[2023-11-29 05:50:06,847 INFO  L226             Difference]: Without dead ends: 14274
[2023-11-29 05:50:06,850 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5023 GetRequests, 5011 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:50:06,850 INFO  L413           NwaCegarLoop]: 12714 mSDtfsCounter, 31760 mSDsluCounter, 49500 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31760 SdHoareTripleChecker+Valid, 62214 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:06,851 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31760 Valid, 62214 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:50:06,862 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14274 states.
[2023-11-29 05:50:06,917 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14274 to 7705.
[2023-11-29 05:50:06,923 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7705 states, 7704 states have (on average 1.666017653167186) internal successors, (12835), 7704 states have internal predecessors, (12835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:06,931 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7705 states to 7705 states and 12835 transitions.
[2023-11-29 05:50:06,931 INFO  L78                 Accepts]: Start accepts. Automaton has 7705 states and 12835 transitions. Word has length 5014
[2023-11-29 05:50:06,933 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:06,933 INFO  L495      AbstractCegarLoop]: Abstraction has 7705 states and 12835 transitions.
[2023-11-29 05:50:06,934 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 639.8571428571429) internal successors, (4479), 7 states have internal predecessors, (4479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:06,934 INFO  L276                IsEmpty]: Start isEmpty. Operand 7705 states and 12835 transitions.
[2023-11-29 05:50:07,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5016
[2023-11-29 05:50:07,032 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:07,033 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:50:07,094 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2023-11-29 05:50:07,233 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2023-11-29 05:50:07,234 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:07,234 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:07,235 INFO  L85        PathProgramCache]: Analyzing trace with hash -447317724, now seen corresponding path program 1 times
[2023-11-29 05:50:07,235 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:07,235 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071728710]
[2023-11-29 05:50:07,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:07,236 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:07,593 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:50:07,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120336985]
[2023-11-29 05:50:07,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:07,594 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:07,594 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:50:07,595 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:50:07,595 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 05:50:12,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:12,695 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22405 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:50:12,750 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:50:12,974 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked.
[2023-11-29 05:50:12,974 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:50:12,974 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:12,974 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071728710]
[2023-11-29 05:50:12,974 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:50:12,974 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120336985]
[2023-11-29 05:50:12,974 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [120336985] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:12,975 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:12,976 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:50:12,976 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496571770]
[2023-11-29 05:50:12,976 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:12,979 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:50:12,979 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:12,982 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:50:12,982 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:50:12,983 INFO  L87              Difference]: Start difference. First operand 7705 states and 12835 transitions. Second operand  has 7 states, 7 states have (on average 640.2857142857143) internal successors, (4482), 7 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:13,377 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:13,377 INFO  L93              Difference]: Finished difference Result 20942 states and 34885 transitions.
[2023-11-29 05:50:13,377 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:50:13,378 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 640.2857142857143) internal successors, (4482), 7 states have internal predecessors, (4482), 0 states have call successors, (0), 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 5015
[2023-11-29 05:50:13,383 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:13,393 INFO  L225             Difference]: With dead ends: 20942
[2023-11-29 05:50:13,394 INFO  L226             Difference]: Without dead ends: 14275
[2023-11-29 05:50:13,399 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5024 GetRequests, 5012 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:50:13,399 INFO  L413           NwaCegarLoop]: 12709 mSDtfsCounter, 31759 mSDsluCounter, 49485 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31759 SdHoareTripleChecker+Valid, 62194 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:13,399 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31759 Valid, 62194 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:50:13,412 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14275 states.
[2023-11-29 05:50:13,483 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 7707.
[2023-11-29 05:50:13,490 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7707 states, 7706 states have (on average 1.6658447962626526) internal successors, (12837), 7706 states have internal predecessors, (12837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:13,499 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 12837 transitions.
[2023-11-29 05:50:13,499 INFO  L78                 Accepts]: Start accepts. Automaton has 7707 states and 12837 transitions. Word has length 5015
[2023-11-29 05:50:13,502 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:13,502 INFO  L495      AbstractCegarLoop]: Abstraction has 7707 states and 12837 transitions.
[2023-11-29 05:50:13,503 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 640.2857142857143) internal successors, (4482), 7 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:13,503 INFO  L276                IsEmpty]: Start isEmpty. Operand 7707 states and 12837 transitions.
[2023-11-29 05:50:13,600 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5017
[2023-11-29 05:50:13,600 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:13,602 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:50:13,664 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 05:50:13,802 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2023-11-29 05:50:13,803 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:13,803 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:13,804 INFO  L85        PathProgramCache]: Analyzing trace with hash 321847816, now seen corresponding path program 1 times
[2023-11-29 05:50:13,804 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:13,804 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677081521]
[2023-11-29 05:50:13,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:13,804 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:14,161 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:50:14,161 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639847892]
[2023-11-29 05:50:14,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:14,162 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:14,162 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:50:14,163 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:50:14,164 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 05:50:19,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:19,498 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22408 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:50:19,572 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:50:19,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked.
[2023-11-29 05:50:19,799 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:50:19,799 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:19,799 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677081521]
[2023-11-29 05:50:19,799 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:50:19,800 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639847892]
[2023-11-29 05:50:19,800 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [639847892] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:19,800 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:19,801 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:50:19,801 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872263826]
[2023-11-29 05:50:19,802 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:19,805 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:50:19,805 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:19,809 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:50:19,809 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:50:19,810 INFO  L87              Difference]: Start difference. First operand 7707 states and 12837 transitions. Second operand  has 7 states, 7 states have (on average 640.7142857142857) internal successors, (4485), 7 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:20,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:20,230 INFO  L93              Difference]: Finished difference Result 20948 states and 34891 transitions.
[2023-11-29 05:50:20,230 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:50:20,231 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 640.7142857142857) internal successors, (4485), 7 states have internal predecessors, (4485), 0 states have call successors, (0), 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 5016
[2023-11-29 05:50:20,235 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:20,245 INFO  L225             Difference]: With dead ends: 20948
[2023-11-29 05:50:20,245 INFO  L226             Difference]: Without dead ends: 14276
[2023-11-29 05:50:20,250 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5025 GetRequests, 5013 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:50:20,251 INFO  L413           NwaCegarLoop]: 12704 mSDtfsCounter, 31758 mSDsluCounter, 49470 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31758 SdHoareTripleChecker+Valid, 62174 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:20,251 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31758 Valid, 62174 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:50:20,265 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14276 states.
[2023-11-29 05:50:20,334 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14276 to 7709.
[2023-11-29 05:50:20,340 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7709 states, 7708 states have (on average 1.665672029060716) internal successors, (12839), 7708 states have internal predecessors, (12839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:20,349 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7709 states to 7709 states and 12839 transitions.
[2023-11-29 05:50:20,349 INFO  L78                 Accepts]: Start accepts. Automaton has 7709 states and 12839 transitions. Word has length 5016
[2023-11-29 05:50:20,351 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:20,351 INFO  L495      AbstractCegarLoop]: Abstraction has 7709 states and 12839 transitions.
[2023-11-29 05:50:20,352 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 640.7142857142857) internal successors, (4485), 7 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:20,352 INFO  L276                IsEmpty]: Start isEmpty. Operand 7709 states and 12839 transitions.
[2023-11-29 05:50:20,448 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5018
[2023-11-29 05:50:20,448 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:20,450 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:50:20,512 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-11-29 05:50:20,650 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2023-11-29 05:50:20,650 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:20,651 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:20,652 INFO  L85        PathProgramCache]: Analyzing trace with hash 1835924030, now seen corresponding path program 1 times
[2023-11-29 05:50:20,652 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:20,652 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114669446]
[2023-11-29 05:50:20,652 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:20,652 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:21,008 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:50:21,009 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899283477]
[2023-11-29 05:50:21,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:21,010 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:21,010 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:50:21,010 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:50:21,011 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 05:50:26,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:26,260 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22411 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:50:26,322 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:50:26,557 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked.
[2023-11-29 05:50:26,557 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:50:26,557 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:26,557 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114669446]
[2023-11-29 05:50:26,557 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:50:26,558 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899283477]
[2023-11-29 05:50:26,558 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899283477] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:26,558 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:26,560 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:50:26,560 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706722204]
[2023-11-29 05:50:26,560 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:26,562 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:50:26,562 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:26,565 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:50:26,565 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:50:26,566 INFO  L87              Difference]: Start difference. First operand 7709 states and 12839 transitions. Second operand  has 7 states, 7 states have (on average 641.1428571428571) internal successors, (4488), 7 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:26,954 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:26,954 INFO  L93              Difference]: Finished difference Result 20954 states and 34897 transitions.
[2023-11-29 05:50:26,955 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:50:26,956 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 641.1428571428571) internal successors, (4488), 7 states have internal predecessors, (4488), 0 states have call successors, (0), 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 5017
[2023-11-29 05:50:26,959 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:26,969 INFO  L225             Difference]: With dead ends: 20954
[2023-11-29 05:50:26,969 INFO  L226             Difference]: Without dead ends: 14277
[2023-11-29 05:50:26,974 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5026 GetRequests, 5014 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:50:26,974 INFO  L413           NwaCegarLoop]: 12699 mSDtfsCounter, 31757 mSDsluCounter, 49455 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31757 SdHoareTripleChecker+Valid, 62154 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:26,975 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31757 Valid, 62154 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:50:26,986 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14277 states.
[2023-11-29 05:50:27,055 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14277 to 7711.
[2023-11-29 05:50:27,062 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7711 states, 7710 states have (on average 1.6654993514915695) internal successors, (12841), 7710 states have internal predecessors, (12841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:27,071 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 12841 transitions.
[2023-11-29 05:50:27,071 INFO  L78                 Accepts]: Start accepts. Automaton has 7711 states and 12841 transitions. Word has length 5017
[2023-11-29 05:50:27,073 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:27,074 INFO  L495      AbstractCegarLoop]: Abstraction has 7711 states and 12841 transitions.
[2023-11-29 05:50:27,074 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 641.1428571428571) internal successors, (4488), 7 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:27,075 INFO  L276                IsEmpty]: Start isEmpty. Operand 7711 states and 12841 transitions.
[2023-11-29 05:50:27,171 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5019
[2023-11-29 05:50:27,171 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:27,172 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:50:27,231 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-11-29 05:50:27,372 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-11-29 05:50:27,373 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:27,373 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:27,374 INFO  L85        PathProgramCache]: Analyzing trace with hash 1443046894, now seen corresponding path program 1 times
[2023-11-29 05:50:27,374 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:27,374 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837395314]
[2023-11-29 05:50:27,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:27,374 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:27,727 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:50:27,728 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083769061]
[2023-11-29 05:50:27,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:27,729 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:27,729 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:50:27,730 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:50:27,731 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 05:50:32,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:32,799 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22414 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:50:32,854 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:50:33,101 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked.
[2023-11-29 05:50:33,101 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:50:33,101 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:33,101 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837395314]
[2023-11-29 05:50:33,101 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:50:33,101 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083769061]
[2023-11-29 05:50:33,101 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083769061] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:33,101 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:33,103 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:50:33,103 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145387180]
[2023-11-29 05:50:33,103 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:33,106 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:50:33,106 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:33,108 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:50:33,108 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:50:33,109 INFO  L87              Difference]: Start difference. First operand 7711 states and 12841 transitions. Second operand  has 7 states, 7 states have (on average 641.5714285714286) internal successors, (4491), 7 states have internal predecessors, (4491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:33,494 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:33,494 INFO  L93              Difference]: Finished difference Result 20960 states and 34903 transitions.
[2023-11-29 05:50:33,495 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:50:33,496 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 641.5714285714286) internal successors, (4491), 7 states have internal predecessors, (4491), 0 states have call successors, (0), 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 5018
[2023-11-29 05:50:33,499 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:33,509 INFO  L225             Difference]: With dead ends: 20960
[2023-11-29 05:50:33,509 INFO  L226             Difference]: Without dead ends: 14278
[2023-11-29 05:50:33,514 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5027 GetRequests, 5015 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:50:33,514 INFO  L413           NwaCegarLoop]: 12694 mSDtfsCounter, 31756 mSDsluCounter, 49440 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31756 SdHoareTripleChecker+Valid, 62134 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:33,515 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31756 Valid, 62134 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:50:33,528 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14278 states.
[2023-11-29 05:50:33,598 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14278 to 7713.
[2023-11-29 05:50:33,605 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7713 states, 7712 states have (on average 1.6653267634854771) internal successors, (12843), 7712 states have internal predecessors, (12843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:33,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 12843 transitions.
[2023-11-29 05:50:33,613 INFO  L78                 Accepts]: Start accepts. Automaton has 7713 states and 12843 transitions. Word has length 5018
[2023-11-29 05:50:33,616 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:33,616 INFO  L495      AbstractCegarLoop]: Abstraction has 7713 states and 12843 transitions.
[2023-11-29 05:50:33,617 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 641.5714285714286) internal successors, (4491), 7 states have internal predecessors, (4491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:33,617 INFO  L276                IsEmpty]: Start isEmpty. Operand 7713 states and 12843 transitions.
[2023-11-29 05:50:33,714 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5020
[2023-11-29 05:50:33,715 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:33,715 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:50:33,779 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2023-11-29 05:50:33,916 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-11-29 05:50:33,916 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:33,916 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:33,917 INFO  L85        PathProgramCache]: Analyzing trace with hash 1774285018, now seen corresponding path program 1 times
[2023-11-29 05:50:33,917 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:33,917 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445361528]
[2023-11-29 05:50:33,917 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:33,918 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:34,271 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:50:34,271 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296908018]
[2023-11-29 05:50:34,272 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:34,272 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:34,272 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:50:34,273 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:50:34,274 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-29 05:50:39,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:39,381 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22418 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:50:39,433 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:50:39,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked.
[2023-11-29 05:50:39,664 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:50:39,664 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:39,664 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445361528]
[2023-11-29 05:50:39,664 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:50:39,664 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296908018]
[2023-11-29 05:50:39,665 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296908018] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:39,665 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:39,666 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:50:39,667 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103326150]
[2023-11-29 05:50:39,667 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:39,669 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:50:39,669 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:39,671 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:50:39,672 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:50:39,673 INFO  L87              Difference]: Start difference. First operand 7713 states and 12843 transitions. Second operand  has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:40,055 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:40,055 INFO  L93              Difference]: Finished difference Result 20966 states and 34909 transitions.
[2023-11-29 05:50:40,055 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:50:40,056 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 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 5019
[2023-11-29 05:50:40,059 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:40,069 INFO  L225             Difference]: With dead ends: 20966
[2023-11-29 05:50:40,069 INFO  L226             Difference]: Without dead ends: 14279
[2023-11-29 05:50:40,074 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5028 GetRequests, 5016 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:50:40,074 INFO  L413           NwaCegarLoop]: 12689 mSDtfsCounter, 31755 mSDsluCounter, 49425 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31755 SdHoareTripleChecker+Valid, 62114 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:40,075 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31755 Valid, 62114 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:50:40,086 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14279 states.
[2023-11-29 05:50:40,150 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14279 to 7715.
[2023-11-29 05:50:40,157 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7715 states, 7714 states have (on average 1.6651542649727769) internal successors, (12845), 7714 states have internal predecessors, (12845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:40,165 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7715 states to 7715 states and 12845 transitions.
[2023-11-29 05:50:40,165 INFO  L78                 Accepts]: Start accepts. Automaton has 7715 states and 12845 transitions. Word has length 5019
[2023-11-29 05:50:40,167 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:40,167 INFO  L495      AbstractCegarLoop]: Abstraction has 7715 states and 12845 transitions.
[2023-11-29 05:50:40,168 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:40,168 INFO  L276                IsEmpty]: Start isEmpty. Operand 7715 states and 12845 transitions.
[2023-11-29 05:50:40,267 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5021
[2023-11-29 05:50:40,268 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:40,268 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:50:40,326 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2023-11-29 05:50:40,469 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2023-11-29 05:50:40,469 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:40,469 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:40,470 INFO  L85        PathProgramCache]: Analyzing trace with hash -1291275434, now seen corresponding path program 1 times
[2023-11-29 05:50:40,470 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:40,470 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986308465]
[2023-11-29 05:50:40,470 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:40,471 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:40,826 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:50:40,826 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661232209]
[2023-11-29 05:50:40,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:40,827 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:40,827 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:50:40,828 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:50:40,828 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-11-29 05:50:45,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:45,785 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22421 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:50:45,834 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:50:46,059 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked.
[2023-11-29 05:50:46,059 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:50:46,059 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:46,059 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986308465]
[2023-11-29 05:50:46,059 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:50:46,059 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661232209]
[2023-11-29 05:50:46,060 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [661232209] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:46,060 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:46,061 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:50:46,062 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140759229]
[2023-11-29 05:50:46,062 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:46,064 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:50:46,065 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:46,067 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:50:46,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:50:46,068 INFO  L87              Difference]: Start difference. First operand 7715 states and 12845 transitions. Second operand  has 7 states, 7 states have (on average 642.7142857142857) internal successors, (4499), 7 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:46,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:46,469 INFO  L93              Difference]: Finished difference Result 20975 states and 34920 transitions.
[2023-11-29 05:50:46,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:50:46,471 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 642.7142857142857) internal successors, (4499), 7 states have internal predecessors, (4499), 0 states have call successors, (0), 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 5020
[2023-11-29 05:50:46,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:46,487 INFO  L225             Difference]: With dead ends: 20975
[2023-11-29 05:50:46,487 INFO  L226             Difference]: Without dead ends: 14283
[2023-11-29 05:50:46,492 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5029 GetRequests, 5017 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:50:46,493 INFO  L413           NwaCegarLoop]: 12679 mSDtfsCounter, 31757 mSDsluCounter, 49395 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31757 SdHoareTripleChecker+Valid, 62074 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:46,493 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31757 Valid, 62074 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:50:46,505 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14283 states.
[2023-11-29 05:50:46,565 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14283 to 7720.
[2023-11-29 05:50:46,571 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7720 states, 7719 states have (on average 1.664982510687913) internal successors, (12852), 7719 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:46,578 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7720 states to 7720 states and 12852 transitions.
[2023-11-29 05:50:46,578 INFO  L78                 Accepts]: Start accepts. Automaton has 7720 states and 12852 transitions. Word has length 5020
[2023-11-29 05:50:46,580 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:46,580 INFO  L495      AbstractCegarLoop]: Abstraction has 7720 states and 12852 transitions.
[2023-11-29 05:50:46,581 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 642.7142857142857) internal successors, (4499), 7 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:46,581 INFO  L276                IsEmpty]: Start isEmpty. Operand 7720 states and 12852 transitions.
[2023-11-29 05:50:46,676 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5022
[2023-11-29 05:50:46,676 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:46,677 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:50:46,735 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-11-29 05:50:46,877 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-11-29 05:50:46,878 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:46,878 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:46,878 INFO  L85        PathProgramCache]: Analyzing trace with hash -32416498, now seen corresponding path program 1 times
[2023-11-29 05:50:46,878 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:46,878 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337746550]
[2023-11-29 05:50:46,879 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:46,879 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:47,218 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:50:47,218 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414806384]
[2023-11-29 05:50:47,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:47,220 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:47,220 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:50:47,220 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:50:47,221 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-11-29 05:50:52,139 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:52,279 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22424 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:50:52,468 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:50:52,688 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked.
[2023-11-29 05:50:52,688 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:50:52,688 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:52,688 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337746550]
[2023-11-29 05:50:52,688 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:50:52,689 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414806384]
[2023-11-29 05:50:52,689 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [414806384] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:52,689 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:52,690 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:50:52,691 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998975961]
[2023-11-29 05:50:52,691 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:52,693 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:50:52,693 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:52,696 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:50:52,696 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:50:52,697 INFO  L87              Difference]: Start difference. First operand 7720 states and 12852 transitions. Second operand  has 7 states, 7 states have (on average 643.4285714285714) internal successors, (4504), 7 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:53,093 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:53,093 INFO  L93              Difference]: Finished difference Result 20990 states and 34941 transitions.
[2023-11-29 05:50:53,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:50:53,094 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 643.4285714285714) internal successors, (4504), 7 states have internal predecessors, (4504), 0 states have call successors, (0), 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 5021
[2023-11-29 05:50:53,098 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:53,109 INFO  L225             Difference]: With dead ends: 20990
[2023-11-29 05:50:53,109 INFO  L226             Difference]: Without dead ends: 14287
[2023-11-29 05:50:53,114 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5030 GetRequests, 5018 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:50:53,115 INFO  L413           NwaCegarLoop]: 12669 mSDtfsCounter, 31761 mSDsluCounter, 49365 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31761 SdHoareTripleChecker+Valid, 62034 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:53,115 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31761 Valid, 62034 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:50:53,128 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14287 states.
[2023-11-29 05:50:53,192 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14287 to 7725.
[2023-11-29 05:50:53,199 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7725 states, 7724 states have (on average 1.664810978767478) internal successors, (12859), 7724 states have internal predecessors, (12859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:53,208 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7725 states to 7725 states and 12859 transitions.
[2023-11-29 05:50:53,208 INFO  L78                 Accepts]: Start accepts. Automaton has 7725 states and 12859 transitions. Word has length 5021
[2023-11-29 05:50:53,211 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:53,211 INFO  L495      AbstractCegarLoop]: Abstraction has 7725 states and 12859 transitions.
[2023-11-29 05:50:53,212 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 643.4285714285714) internal successors, (4504), 7 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:53,212 INFO  L276                IsEmpty]: Start isEmpty. Operand 7725 states and 12859 transitions.
[2023-11-29 05:50:53,310 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5023
[2023-11-29 05:50:53,310 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:53,311 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:50:53,371 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-11-29 05:50:53,512 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-11-29 05:50:53,512 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:53,512 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:53,513 INFO  L85        PathProgramCache]: Analyzing trace with hash 406855202, now seen corresponding path program 1 times
[2023-11-29 05:50:53,513 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:53,513 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616598628]
[2023-11-29 05:50:53,513 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:53,513 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:53,864 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:50:53,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480234789]
[2023-11-29 05:50:53,865 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:53,865 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:53,865 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:50:53,866 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:50:53,867 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-11-29 05:50:58,671 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:58,811 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22427 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:50:58,866 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:50:59,093 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked.
[2023-11-29 05:50:59,094 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:50:59,094 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:59,094 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616598628]
[2023-11-29 05:50:59,094 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:50:59,094 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480234789]
[2023-11-29 05:50:59,094 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [480234789] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:59,094 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:59,096 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:50:59,096 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57127030]
[2023-11-29 05:50:59,096 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:59,098 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:50:59,098 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:59,100 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:50:59,100 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:50:59,101 INFO  L87              Difference]: Start difference. First operand 7725 states and 12859 transitions. Second operand  has 8 states, 8 states have (on average 563.625) internal successors, (4509), 8 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:59,560 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:59,560 INFO  L93              Difference]: Finished difference Result 21007 states and 34964 transitions.
[2023-11-29 05:50:59,560 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-11-29 05:50:59,561 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 563.625) internal successors, (4509), 8 states have internal predecessors, (4509), 0 states have call successors, (0), 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 5022
[2023-11-29 05:50:59,565 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:59,576 INFO  L225             Difference]: With dead ends: 21007
[2023-11-29 05:50:59,576 INFO  L226             Difference]: Without dead ends: 14293
[2023-11-29 05:50:59,581 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5032 GetRequests, 5018 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2023-11-29 05:50:59,581 INFO  L413           NwaCegarLoop]: 12658 mSDtfsCounter, 31767 mSDsluCounter, 60235 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31767 SdHoareTripleChecker+Valid, 72893 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:59,582 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31767 Valid, 72893 Invalid, 66 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:50:59,594 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14293 states.
[2023-11-29 05:50:59,667 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14293 to 7730.
[2023-11-29 05:50:59,674 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7730 states, 7729 states have (on average 1.6646396687799199) internal successors, (12866), 7729 states have internal predecessors, (12866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:59,683 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 12866 transitions.
[2023-11-29 05:50:59,683 INFO  L78                 Accepts]: Start accepts. Automaton has 7730 states and 12866 transitions. Word has length 5022
[2023-11-29 05:50:59,685 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:59,685 INFO  L495      AbstractCegarLoop]: Abstraction has 7730 states and 12866 transitions.
[2023-11-29 05:50:59,686 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 563.625) internal successors, (4509), 8 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:59,686 INFO  L276                IsEmpty]: Start isEmpty. Operand 7730 states and 12866 transitions.
[2023-11-29 05:50:59,783 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5024
[2023-11-29 05:50:59,783 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:59,784 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:50:59,844 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-11-29 05:50:59,984 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:59,984 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:59,985 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:59,986 INFO  L85        PathProgramCache]: Analyzing trace with hash -397685950, now seen corresponding path program 1 times
[2023-11-29 05:50:59,986 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:59,986 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113678768]
[2023-11-29 05:50:59,987 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:59,987 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:51:00,426 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:51:00,426 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640923435]
[2023-11-29 05:51:00,427 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:00,427 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:00,428 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:51:00,428 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:51:00,429 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-11-29 05:51:05,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:05,512 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22430 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:51:05,566 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:51:05,977 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked.
[2023-11-29 05:51:05,977 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:51:05,978 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:05,978 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113678768]
[2023-11-29 05:51:05,978 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:51:05,978 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640923435]
[2023-11-29 05:51:05,978 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640923435] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:05,978 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:05,980 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:51:05,980 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572497210]
[2023-11-29 05:51:05,980 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:05,982 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:51:05,982 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:05,984 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:51:05,984 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:51:05,986 INFO  L87              Difference]: Start difference. First operand 7730 states and 12866 transitions. Second operand  has 7 states, 7 states have (on average 644.8571428571429) internal successors, (4514), 7 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:06,408 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:51:06,408 INFO  L93              Difference]: Finished difference Result 21020 states and 34983 transitions.
[2023-11-29 05:51:06,409 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:51:06,410 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 644.8571428571429) internal successors, (4514), 7 states have internal predecessors, (4514), 0 states have call successors, (0), 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 5023
[2023-11-29 05:51:06,413 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:51:06,424 INFO  L225             Difference]: With dead ends: 21020
[2023-11-29 05:51:06,424 INFO  L226             Difference]: Without dead ends: 14295
[2023-11-29 05:51:06,429 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5032 GetRequests, 5020 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:51:06,429 INFO  L413           NwaCegarLoop]: 12649 mSDtfsCounter, 31769 mSDsluCounter, 49305 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31769 SdHoareTripleChecker+Valid, 61954 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:51:06,430 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31769 Valid, 61954 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:51:06,443 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14295 states.
[2023-11-29 05:51:06,515 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14295 to 7735.
[2023-11-29 05:51:06,522 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7735 states, 7734 states have (on average 1.6644685802948023) internal successors, (12873), 7734 states have internal predecessors, (12873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:06,531 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 12873 transitions.
[2023-11-29 05:51:06,531 INFO  L78                 Accepts]: Start accepts. Automaton has 7735 states and 12873 transitions. Word has length 5023
[2023-11-29 05:51:06,533 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:51:06,533 INFO  L495      AbstractCegarLoop]: Abstraction has 7735 states and 12873 transitions.
[2023-11-29 05:51:06,534 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 644.8571428571429) internal successors, (4514), 7 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:06,535 INFO  L276                IsEmpty]: Start isEmpty. Operand 7735 states and 12873 transitions.
[2023-11-29 05:51:06,632 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5025
[2023-11-29 05:51:06,632 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:51:06,633 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:51:06,694 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2023-11-29 05:51:06,833 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2023-11-29 05:51:06,834 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:51:06,834 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:51:06,835 INFO  L85        PathProgramCache]: Analyzing trace with hash 288532206, now seen corresponding path program 1 times
[2023-11-29 05:51:06,835 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:51:06,835 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31324269]
[2023-11-29 05:51:06,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:06,835 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:51:07,229 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:51:07,229 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104490516]
[2023-11-29 05:51:07,230 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:07,231 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:07,231 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:51:07,231 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:51:07,232 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-11-29 05:51:12,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:12,217 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22433 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:51:12,270 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:51:12,495 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked.
[2023-11-29 05:51:12,495 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:51:12,496 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:12,496 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31324269]
[2023-11-29 05:51:12,496 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:51:12,496 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104490516]
[2023-11-29 05:51:12,496 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104490516] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:12,496 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:12,498 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:51:12,498 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507106763]
[2023-11-29 05:51:12,498 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:12,500 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:51:12,500 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:12,502 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:51:12,502 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:51:12,504 INFO  L87              Difference]: Start difference. First operand 7735 states and 12873 transitions. Second operand  has 7 states, 7 states have (on average 645.5714285714286) internal successors, (4519), 7 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:13,021 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:51:13,021 INFO  L93              Difference]: Finished difference Result 21035 states and 35004 transitions.
[2023-11-29 05:51:13,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:51:13,022 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 645.5714285714286) internal successors, (4519), 7 states have internal predecessors, (4519), 0 states have call successors, (0), 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 5024
[2023-11-29 05:51:13,025 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:51:13,033 INFO  L225             Difference]: With dead ends: 21035
[2023-11-29 05:51:13,033 INFO  L226             Difference]: Without dead ends: 14299
[2023-11-29 05:51:13,036 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5033 GetRequests, 5021 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:51:13,036 INFO  L413           NwaCegarLoop]: 12639 mSDtfsCounter, 31773 mSDsluCounter, 49275 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31773 SdHoareTripleChecker+Valid, 61914 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:51:13,036 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31773 Valid, 61914 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:51:13,048 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14299 states.
[2023-11-29 05:51:13,115 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14299 to 7740.
[2023-11-29 05:51:13,122 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7740 states, 7739 states have (on average 1.6642977128828014) internal successors, (12880), 7739 states have internal predecessors, (12880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:13,131 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7740 states to 7740 states and 12880 transitions.
[2023-11-29 05:51:13,131 INFO  L78                 Accepts]: Start accepts. Automaton has 7740 states and 12880 transitions. Word has length 5024
[2023-11-29 05:51:13,134 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:51:13,134 INFO  L495      AbstractCegarLoop]: Abstraction has 7740 states and 12880 transitions.
[2023-11-29 05:51:13,135 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 645.5714285714286) internal successors, (4519), 7 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:13,135 INFO  L276                IsEmpty]: Start isEmpty. Operand 7740 states and 12880 transitions.
[2023-11-29 05:51:13,236 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5026
[2023-11-29 05:51:13,236 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:51:13,237 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:51:13,304 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2023-11-29 05:51:13,438 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31
[2023-11-29 05:51:13,438 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:51:13,438 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:51:13,439 INFO  L85        PathProgramCache]: Analyzing trace with hash -936019082, now seen corresponding path program 1 times
[2023-11-29 05:51:13,439 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:51:13,439 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588535845]
[2023-11-29 05:51:13,440 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:13,440 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:51:13,818 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:51:13,818 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283943785]
[2023-11-29 05:51:13,819 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:13,819 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:13,819 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:51:13,820 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:51:13,821 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-11-29 05:51:18,965 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:19,117 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22436 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:51:19,177 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:51:19,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked.
[2023-11-29 05:51:19,411 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:51:19,411 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:19,411 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588535845]
[2023-11-29 05:51:19,411 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:51:19,412 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283943785]
[2023-11-29 05:51:19,412 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283943785] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:19,412 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:19,413 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:51:19,414 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442508323]
[2023-11-29 05:51:19,414 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:19,416 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:51:19,416 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:19,418 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:51:19,418 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:51:19,419 INFO  L87              Difference]: Start difference. First operand 7740 states and 12880 transitions. Second operand  has 7 states, 7 states have (on average 646.2857142857143) internal successors, (4524), 7 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:19,805 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:51:19,806 INFO  L93              Difference]: Finished difference Result 21050 states and 35025 transitions.
[2023-11-29 05:51:19,806 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:51:19,807 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 646.2857142857143) internal successors, (4524), 7 states have internal predecessors, (4524), 0 states have call successors, (0), 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 5025
[2023-11-29 05:51:19,811 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:51:19,822 INFO  L225             Difference]: With dead ends: 21050
[2023-11-29 05:51:19,822 INFO  L226             Difference]: Without dead ends: 14303
[2023-11-29 05:51:19,827 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5034 GetRequests, 5022 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:51:19,828 INFO  L413           NwaCegarLoop]: 12629 mSDtfsCounter, 31777 mSDsluCounter, 49245 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31777 SdHoareTripleChecker+Valid, 61874 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:51:19,828 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31777 Valid, 61874 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:51:19,842 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14303 states.
[2023-11-29 05:51:19,919 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14303 to 7745.
[2023-11-29 05:51:19,926 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7745 states, 7744 states have (on average 1.6641270661157024) internal successors, (12887), 7744 states have internal predecessors, (12887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:19,935 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 12887 transitions.
[2023-11-29 05:51:19,935 INFO  L78                 Accepts]: Start accepts. Automaton has 7745 states and 12887 transitions. Word has length 5025
[2023-11-29 05:51:19,938 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:51:19,938 INFO  L495      AbstractCegarLoop]: Abstraction has 7745 states and 12887 transitions.
[2023-11-29 05:51:19,939 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 646.2857142857143) internal successors, (4524), 7 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:19,939 INFO  L276                IsEmpty]: Start isEmpty. Operand 7745 states and 12887 transitions.
[2023-11-29 05:51:20,042 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5027
[2023-11-29 05:51:20,042 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:51:20,043 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:51:20,111 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-11-29 05:51:20,243 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32
[2023-11-29 05:51:20,244 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:51:20,244 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:51:20,244 INFO  L85        PathProgramCache]: Analyzing trace with hash 326864314, now seen corresponding path program 1 times
[2023-11-29 05:51:20,245 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:51:20,245 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521814183]
[2023-11-29 05:51:20,245 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:20,245 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:51:20,621 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:51:20,621 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812657092]
[2023-11-29 05:51:20,622 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:20,622 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:20,622 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:51:20,623 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:51:20,624 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-11-29 05:51:25,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:25,987 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22439 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:51:26,047 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:51:26,269 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked.
[2023-11-29 05:51:26,270 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:51:26,270 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:26,270 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521814183]
[2023-11-29 05:51:26,270 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:51:26,270 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812657092]
[2023-11-29 05:51:26,270 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [812657092] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:26,270 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:26,272 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:51:26,272 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428445999]
[2023-11-29 05:51:26,272 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:26,274 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:51:26,274 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:26,277 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:51:26,277 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:51:26,279 INFO  L87              Difference]: Start difference. First operand 7745 states and 12887 transitions. Second operand  has 7 states, 7 states have (on average 647.0) internal successors, (4529), 7 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:26,671 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:51:26,671 INFO  L93              Difference]: Finished difference Result 21065 states and 35046 transitions.
[2023-11-29 05:51:26,671 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:51:26,673 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 647.0) internal successors, (4529), 7 states have internal predecessors, (4529), 0 states have call successors, (0), 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 5026
[2023-11-29 05:51:26,676 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:51:26,686 INFO  L225             Difference]: With dead ends: 21065
[2023-11-29 05:51:26,686 INFO  L226             Difference]: Without dead ends: 14307
[2023-11-29 05:51:26,691 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5035 GetRequests, 5023 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:51:26,692 INFO  L413           NwaCegarLoop]: 12619 mSDtfsCounter, 31781 mSDsluCounter, 49215 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31781 SdHoareTripleChecker+Valid, 61834 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:51:26,692 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31781 Valid, 61834 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:51:26,705 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14307 states.
[2023-11-29 05:51:26,772 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14307 to 7750.
[2023-11-29 05:51:26,779 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7750 states, 7749 states have (on average 1.6639566395663956) internal successors, (12894), 7749 states have internal predecessors, (12894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:26,918 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 12894 transitions.
[2023-11-29 05:51:26,919 INFO  L78                 Accepts]: Start accepts. Automaton has 7750 states and 12894 transitions. Word has length 5026
[2023-11-29 05:51:26,921 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:51:26,921 INFO  L495      AbstractCegarLoop]: Abstraction has 7750 states and 12894 transitions.
[2023-11-29 05:51:26,922 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 647.0) internal successors, (4529), 7 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:26,922 INFO  L276                IsEmpty]: Start isEmpty. Operand 7750 states and 12894 transitions.
[2023-11-29 05:51:27,019 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5028
[2023-11-29 05:51:27,019 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:51:27,020 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:51:27,091 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2023-11-29 05:51:27,221 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:27,221 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:51:27,223 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:51:27,223 INFO  L85        PathProgramCache]: Analyzing trace with hash 2077437354, now seen corresponding path program 1 times
[2023-11-29 05:51:27,224 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:51:27,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901447927]
[2023-11-29 05:51:27,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:27,224 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:51:27,693 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:51:27,693 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420259103]
[2023-11-29 05:51:27,694 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:27,694 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:27,694 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:51:27,695 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:51:27,696 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-11-29 05:51:32,812 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:32,967 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22442 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:51:33,030 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:51:33,258 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked.
[2023-11-29 05:51:33,258 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:51:33,258 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:33,258 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901447927]
[2023-11-29 05:51:33,258 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:51:33,258 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420259103]
[2023-11-29 05:51:33,258 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [420259103] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:33,258 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:33,260 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:51:33,260 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456072741]
[2023-11-29 05:51:33,260 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:33,262 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:51:33,262 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:33,265 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:51:33,265 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:51:33,266 INFO  L87              Difference]: Start difference. First operand 7750 states and 12894 transitions. Second operand  has 7 states, 7 states have (on average 647.7142857142857) internal successors, (4534), 7 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:33,647 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:51:33,647 INFO  L93              Difference]: Finished difference Result 21080 states and 35067 transitions.
[2023-11-29 05:51:33,648 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:51:33,649 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 647.7142857142857) internal successors, (4534), 7 states have internal predecessors, (4534), 0 states have call successors, (0), 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 5027
[2023-11-29 05:51:33,652 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:51:33,662 INFO  L225             Difference]: With dead ends: 21080
[2023-11-29 05:51:33,662 INFO  L226             Difference]: Without dead ends: 14311
[2023-11-29 05:51:33,668 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5036 GetRequests, 5024 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:51:33,668 INFO  L413           NwaCegarLoop]: 12609 mSDtfsCounter, 31785 mSDsluCounter, 49185 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31785 SdHoareTripleChecker+Valid, 61794 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:51:33,669 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31785 Valid, 61794 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:51:33,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14311 states.
[2023-11-29 05:51:33,759 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14311 to 7755.
[2023-11-29 05:51:33,766 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7755 states, 7754 states have (on average 1.663786432808873) internal successors, (12901), 7754 states have internal predecessors, (12901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:33,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7755 states to 7755 states and 12901 transitions.
[2023-11-29 05:51:33,776 INFO  L78                 Accepts]: Start accepts. Automaton has 7755 states and 12901 transitions. Word has length 5027
[2023-11-29 05:51:33,778 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:51:33,778 INFO  L495      AbstractCegarLoop]: Abstraction has 7755 states and 12901 transitions.
[2023-11-29 05:51:33,779 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 647.7142857142857) internal successors, (4534), 7 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:33,780 INFO  L276                IsEmpty]: Start isEmpty. Operand 7755 states and 12901 transitions.
[2023-11-29 05:51:33,885 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5029
[2023-11-29 05:51:33,886 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:51:33,886 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:51:33,953 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0
[2023-11-29 05:51:34,087 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2023-11-29 05:51:34,087 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:51:34,088 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:51:34,088 INFO  L85        PathProgramCache]: Analyzing trace with hash -998894970, now seen corresponding path program 1 times
[2023-11-29 05:51:34,088 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:51:34,088 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783907236]
[2023-11-29 05:51:34,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:34,089 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:51:34,483 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:51:34,483 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970921150]
[2023-11-29 05:51:34,484 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:34,484 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:34,484 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:51:34,485 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:51:34,486 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-11-29 05:51:39,873 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:40,029 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22445 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:51:40,082 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:51:40,331 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked.
[2023-11-29 05:51:40,331 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:51:40,331 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:40,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783907236]
[2023-11-29 05:51:40,331 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:51:40,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970921150]
[2023-11-29 05:51:40,331 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [970921150] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:40,331 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:40,333 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:51:40,333 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317078807]
[2023-11-29 05:51:40,333 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:40,335 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:51:40,335 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:40,338 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:51:40,338 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:51:40,339 INFO  L87              Difference]: Start difference. First operand 7755 states and 12901 transitions. Second operand  has 7 states, 7 states have (on average 648.4285714285714) internal successors, (4539), 7 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:40,796 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:51:40,796 INFO  L93              Difference]: Finished difference Result 21095 states and 35088 transitions.
[2023-11-29 05:51:40,796 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:51:40,798 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 648.4285714285714) internal successors, (4539), 7 states have internal predecessors, (4539), 0 states have call successors, (0), 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 5028
[2023-11-29 05:51:40,801 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:51:40,811 INFO  L225             Difference]: With dead ends: 21095
[2023-11-29 05:51:40,811 INFO  L226             Difference]: Without dead ends: 14315
[2023-11-29 05:51:40,816 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5037 GetRequests, 5025 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:51:40,817 INFO  L413           NwaCegarLoop]: 12599 mSDtfsCounter, 31789 mSDsluCounter, 49155 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31789 SdHoareTripleChecker+Valid, 61754 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:51:40,817 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31789 Valid, 61754 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:51:40,830 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14315 states.
[2023-11-29 05:51:40,906 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14315 to 7760.
[2023-11-29 05:51:40,913 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7760 states, 7759 states have (on average 1.663616445418224) internal successors, (12908), 7759 states have internal predecessors, (12908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:40,922 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7760 states to 7760 states and 12908 transitions.
[2023-11-29 05:51:40,922 INFO  L78                 Accepts]: Start accepts. Automaton has 7760 states and 12908 transitions. Word has length 5028
[2023-11-29 05:51:40,925 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:51:40,925 INFO  L495      AbstractCegarLoop]: Abstraction has 7760 states and 12908 transitions.
[2023-11-29 05:51:40,926 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 648.4285714285714) internal successors, (4539), 7 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:40,927 INFO  L276                IsEmpty]: Start isEmpty. Operand 7760 states and 12908 transitions.
[2023-11-29 05:51:41,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5030
[2023-11-29 05:51:41,146 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:51:41,147 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:51:41,211 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2023-11-29 05:51:41,347 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2023-11-29 05:51:41,348 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:51:41,350 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:51:41,350 INFO  L85        PathProgramCache]: Analyzing trace with hash -1016487458, now seen corresponding path program 1 times
[2023-11-29 05:51:41,350 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:51:41,351 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095110601]
[2023-11-29 05:51:41,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:41,351 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:51:41,738 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:51:41,738 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109627274]
[2023-11-29 05:51:41,739 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:41,740 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:41,740 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:51:41,741 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:51:41,741 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-11-29 05:51:46,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:47,069 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22448 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:51:47,130 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:51:47,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked.
[2023-11-29 05:51:47,374 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:51:47,374 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:47,374 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095110601]
[2023-11-29 05:51:47,374 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:51:47,374 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109627274]
[2023-11-29 05:51:47,374 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [109627274] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:47,374 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:47,376 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:51:47,376 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030850762]
[2023-11-29 05:51:47,376 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:47,379 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:51:47,379 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:47,381 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:51:47,382 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:51:47,383 INFO  L87              Difference]: Start difference. First operand 7760 states and 12908 transitions. Second operand  has 7 states, 7 states have (on average 649.1428571428571) internal successors, (4544), 7 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:47,782 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:51:47,782 INFO  L93              Difference]: Finished difference Result 21110 states and 35109 transitions.
[2023-11-29 05:51:47,782 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:51:47,783 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 649.1428571428571) internal successors, (4544), 7 states have internal predecessors, (4544), 0 states have call successors, (0), 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 5029
[2023-11-29 05:51:47,787 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:51:47,797 INFO  L225             Difference]: With dead ends: 21110
[2023-11-29 05:51:47,797 INFO  L226             Difference]: Without dead ends: 14319
[2023-11-29 05:51:47,803 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5038 GetRequests, 5026 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:51:47,803 INFO  L413           NwaCegarLoop]: 12589 mSDtfsCounter, 31793 mSDsluCounter, 49125 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31793 SdHoareTripleChecker+Valid, 61714 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:51:47,803 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31793 Valid, 61714 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:51:47,818 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14319 states.
[2023-11-29 05:51:47,903 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14319 to 7765.
[2023-11-29 05:51:47,911 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7765 states, 7764 states have (on average 1.6634466769706338) internal successors, (12915), 7764 states have internal predecessors, (12915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:47,920 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7765 states to 7765 states and 12915 transitions.
[2023-11-29 05:51:47,921 INFO  L78                 Accepts]: Start accepts. Automaton has 7765 states and 12915 transitions. Word has length 5029
[2023-11-29 05:51:47,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:51:47,924 INFO  L495      AbstractCegarLoop]: Abstraction has 7765 states and 12915 transitions.
[2023-11-29 05:51:47,925 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 649.1428571428571) internal successors, (4544), 7 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:47,925 INFO  L276                IsEmpty]: Start isEmpty. Operand 7765 states and 12915 transitions.
[2023-11-29 05:51:48,034 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5031
[2023-11-29 05:51:48,034 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:51:48,035 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:51:48,106 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0
[2023-11-29 05:51:48,235 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:48,236 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:51:48,236 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:51:48,236 INFO  L85        PathProgramCache]: Analyzing trace with hash 1430091090, now seen corresponding path program 1 times
[2023-11-29 05:51:48,237 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:51:48,237 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639565016]
[2023-11-29 05:51:48,237 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:48,237 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:51:48,654 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:51:48,654 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071134232]
[2023-11-29 05:51:48,655 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:48,656 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:48,656 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:51:48,657 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:51:48,657 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-11-29 05:51:53,809 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:53,957 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22451 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:51:54,016 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:51:54,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked.
[2023-11-29 05:51:54,238 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:51:54,238 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:54,238 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639565016]
[2023-11-29 05:51:54,238 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:51:54,239 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071134232]
[2023-11-29 05:51:54,239 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071134232] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:54,239 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:54,241 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:51:54,241 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923880414]
[2023-11-29 05:51:54,241 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:54,243 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:51:54,243 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:54,245 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:51:54,246 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:51:54,247 INFO  L87              Difference]: Start difference. First operand 7765 states and 12915 transitions. Second operand  has 7 states, 7 states have (on average 649.8571428571429) internal successors, (4549), 7 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:54,644 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:51:54,644 INFO  L93              Difference]: Finished difference Result 21125 states and 35130 transitions.
[2023-11-29 05:51:54,645 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:51:54,646 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 649.8571428571429) internal successors, (4549), 7 states have internal predecessors, (4549), 0 states have call successors, (0), 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 5030
[2023-11-29 05:51:54,649 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:51:54,660 INFO  L225             Difference]: With dead ends: 21125
[2023-11-29 05:51:54,660 INFO  L226             Difference]: Without dead ends: 14323
[2023-11-29 05:51:54,666 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5039 GetRequests, 5027 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:51:54,667 INFO  L413           NwaCegarLoop]: 12579 mSDtfsCounter, 31797 mSDsluCounter, 49095 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31797 SdHoareTripleChecker+Valid, 61674 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:51:54,667 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31797 Valid, 61674 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:51:54,681 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14323 states.
[2023-11-29 05:51:54,760 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14323 to 7770.
[2023-11-29 05:51:54,767 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7770 states, 7769 states have (on average 1.6632771270433775) internal successors, (12922), 7769 states have internal predecessors, (12922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:54,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 12922 transitions.
[2023-11-29 05:51:54,776 INFO  L78                 Accepts]: Start accepts. Automaton has 7770 states and 12922 transitions. Word has length 5030
[2023-11-29 05:51:54,779 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:51:54,779 INFO  L495      AbstractCegarLoop]: Abstraction has 7770 states and 12922 transitions.
[2023-11-29 05:51:54,780 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 649.8571428571429) internal successors, (4549), 7 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:54,780 INFO  L276                IsEmpty]: Start isEmpty. Operand 7770 states and 12922 transitions.
[2023-11-29 05:51:55,012 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5032
[2023-11-29 05:51:55,012 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:51:55,014 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:51:55,079 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2023-11-29 05:51:55,214 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-11-29 05:51:55,215 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:51:55,216 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:51:55,217 INFO  L85        PathProgramCache]: Analyzing trace with hash -444753902, now seen corresponding path program 1 times
[2023-11-29 05:51:55,217 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:51:55,217 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658135278]
[2023-11-29 05:51:55,217 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:55,217 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:51:55,578 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:51:55,578 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055556317]
[2023-11-29 05:51:55,579 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:55,579 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:55,579 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:51:55,580 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:51:55,581 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-11-29 05:52:00,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:52:01,059 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22454 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:52:01,121 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:52:01,366 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked.
[2023-11-29 05:52:01,366 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:52:01,366 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:52:01,367 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658135278]
[2023-11-29 05:52:01,367 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:52:01,367 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055556317]
[2023-11-29 05:52:01,367 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055556317] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:52:01,367 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:52:01,368 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:52:01,369 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966453704]
[2023-11-29 05:52:01,369 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:52:01,372 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:52:01,372 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:52:01,375 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:52:01,375 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:52:01,376 INFO  L87              Difference]: Start difference. First operand 7770 states and 12922 transitions. Second operand  has 7 states, 7 states have (on average 650.5714285714286) internal successors, (4554), 7 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:01,818 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:52:01,819 INFO  L93              Difference]: Finished difference Result 21140 states and 35151 transitions.
[2023-11-29 05:52:01,819 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:52:01,820 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 650.5714285714286) internal successors, (4554), 7 states have internal predecessors, (4554), 0 states have call successors, (0), 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 5031
[2023-11-29 05:52:01,824 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:52:01,836 INFO  L225             Difference]: With dead ends: 21140
[2023-11-29 05:52:01,836 INFO  L226             Difference]: Without dead ends: 14327
[2023-11-29 05:52:01,841 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5040 GetRequests, 5028 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:52:01,842 INFO  L413           NwaCegarLoop]: 12569 mSDtfsCounter, 31801 mSDsluCounter, 49065 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31801 SdHoareTripleChecker+Valid, 61634 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:52:01,842 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31801 Valid, 61634 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:52:01,857 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14327 states.
[2023-11-29 05:52:01,936 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14327 to 7775.
[2023-11-29 05:52:01,944 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7775 states, 7774 states have (on average 1.6631077952148186) internal successors, (12929), 7774 states have internal predecessors, (12929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:01,952 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7775 states to 7775 states and 12929 transitions.
[2023-11-29 05:52:01,952 INFO  L78                 Accepts]: Start accepts. Automaton has 7775 states and 12929 transitions. Word has length 5031
[2023-11-29 05:52:01,955 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:52:01,955 INFO  L495      AbstractCegarLoop]: Abstraction has 7775 states and 12929 transitions.
[2023-11-29 05:52:01,955 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 650.5714285714286) internal successors, (4554), 7 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:01,956 INFO  L276                IsEmpty]: Start isEmpty. Operand 7775 states and 12929 transitions.
[2023-11-29 05:52:02,052 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5033
[2023-11-29 05:52:02,052 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:52:02,053 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:52:02,114 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0
[2023-11-29 05:52:02,253 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2023-11-29 05:52:02,254 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:52:02,255 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:52:02,257 INFO  L85        PathProgramCache]: Analyzing trace with hash -559090146, now seen corresponding path program 1 times
[2023-11-29 05:52:02,257 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:52:02,257 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663752777]
[2023-11-29 05:52:02,259 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:02,259 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:52:02,645 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:52:02,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592818991]
[2023-11-29 05:52:02,647 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:02,647 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:02,647 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:52:02,648 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:52:02,650 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-11-29 05:52:07,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:52:07,944 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22457 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:52:08,004 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:52:08,242 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked.
[2023-11-29 05:52:08,243 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:52:08,243 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:52:08,243 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663752777]
[2023-11-29 05:52:08,243 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:52:08,243 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592818991]
[2023-11-29 05:52:08,243 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592818991] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:52:08,243 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:52:08,244 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:52:08,244 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344580995]
[2023-11-29 05:52:08,244 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:52:08,246 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:52:08,246 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:52:08,248 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:52:08,248 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:52:08,249 INFO  L87              Difference]: Start difference. First operand 7775 states and 12929 transitions. Second operand  has 7 states, 7 states have (on average 651.2857142857143) internal successors, (4559), 7 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:08,642 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:52:08,642 INFO  L93              Difference]: Finished difference Result 21155 states and 35172 transitions.
[2023-11-29 05:52:08,643 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:52:08,644 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 651.2857142857143) internal successors, (4559), 7 states have internal predecessors, (4559), 0 states have call successors, (0), 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 5032
[2023-11-29 05:52:08,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:52:08,658 INFO  L225             Difference]: With dead ends: 21155
[2023-11-29 05:52:08,658 INFO  L226             Difference]: Without dead ends: 14331
[2023-11-29 05:52:08,664 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5029 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:52:08,664 INFO  L413           NwaCegarLoop]: 12559 mSDtfsCounter, 31805 mSDsluCounter, 49035 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31805 SdHoareTripleChecker+Valid, 61594 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:52:08,664 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31805 Valid, 61594 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:52:08,678 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14331 states.
[2023-11-29 05:52:08,757 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14331 to 7780.
[2023-11-29 05:52:08,765 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7780 states, 7779 states have (on average 1.6629386810644042) internal successors, (12936), 7779 states have internal predecessors, (12936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:08,774 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7780 states to 7780 states and 12936 transitions.
[2023-11-29 05:52:08,774 INFO  L78                 Accepts]: Start accepts. Automaton has 7780 states and 12936 transitions. Word has length 5032
[2023-11-29 05:52:08,777 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:52:08,777 INFO  L495      AbstractCegarLoop]: Abstraction has 7780 states and 12936 transitions.
[2023-11-29 05:52:08,778 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 651.2857142857143) internal successors, (4559), 7 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:08,778 INFO  L276                IsEmpty]: Start isEmpty. Operand 7780 states and 12936 transitions.
[2023-11-29 05:52:09,040 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5034
[2023-11-29 05:52:09,040 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:52:09,042 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:52:09,109 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2023-11-29 05:52:09,243 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-11-29 05:52:09,244 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:52:09,245 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:52:09,246 INFO  L85        PathProgramCache]: Analyzing trace with hash 1389613126, now seen corresponding path program 1 times
[2023-11-29 05:52:09,246 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:52:09,246 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486893837]
[2023-11-29 05:52:09,246 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:09,246 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:52:09,633 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:52:09,633 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102874926]
[2023-11-29 05:52:09,634 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:09,634 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:09,634 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:52:09,635 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:52:09,636 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-11-29 05:52:14,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:52:15,072 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22460 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:52:15,138 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:52:15,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked.
[2023-11-29 05:52:15,395 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:52:15,396 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:52:15,396 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486893837]
[2023-11-29 05:52:15,396 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:52:15,396 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102874926]
[2023-11-29 05:52:15,396 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102874926] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:52:15,396 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:52:15,398 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:52:15,398 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796878322]
[2023-11-29 05:52:15,398 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:52:15,400 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:52:15,400 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:52:15,402 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:52:15,403 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:52:15,404 INFO  L87              Difference]: Start difference. First operand 7780 states and 12936 transitions. Second operand  has 7 states, 7 states have (on average 651.7142857142857) internal successors, (4562), 7 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:15,970 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:52:15,970 INFO  L93              Difference]: Finished difference Result 21167 states and 35188 transitions.
[2023-11-29 05:52:15,970 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:52:15,972 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 651.7142857142857) internal successors, (4562), 7 states have internal predecessors, (4562), 0 states have call successors, (0), 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 5033
[2023-11-29 05:52:15,976 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:52:15,988 INFO  L225             Difference]: With dead ends: 21167
[2023-11-29 05:52:15,988 INFO  L226             Difference]: Without dead ends: 14332
[2023-11-29 05:52:15,994 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5042 GetRequests, 5030 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:52:15,994 INFO  L413           NwaCegarLoop]: 12554 mSDtfsCounter, 31806 mSDsluCounter, 49020 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31806 SdHoareTripleChecker+Valid, 61574 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:52:15,994 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31806 Valid, 61574 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:52:16,009 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14332 states.
[2023-11-29 05:52:16,092 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14332 to 7782.
[2023-11-29 05:52:16,099 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7782 states, 7781 states have (on average 1.6627682817118623) internal successors, (12938), 7781 states have internal predecessors, (12938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:16,109 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7782 states to 7782 states and 12938 transitions.
[2023-11-29 05:52:16,109 INFO  L78                 Accepts]: Start accepts. Automaton has 7782 states and 12938 transitions. Word has length 5033
[2023-11-29 05:52:16,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:52:16,112 INFO  L495      AbstractCegarLoop]: Abstraction has 7782 states and 12938 transitions.
[2023-11-29 05:52:16,113 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 651.7142857142857) internal successors, (4562), 7 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:16,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 7782 states and 12938 transitions.
[2023-11-29 05:52:16,230 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5035
[2023-11-29 05:52:16,231 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:52:16,231 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2023-11-29 05:52:16,302 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0
[2023-11-29 05:52:16,432 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:16,432 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:52:16,432 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:52:16,433 INFO  L85        PathProgramCache]: Analyzing trace with hash -1348439294, now seen corresponding path program 1 times
[2023-11-29 05:52:16,433 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:52:16,433 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968461118]
[2023-11-29 05:52:16,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:16,434 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:52:16,828 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:52:16,829 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158519365]
[2023-11-29 05:52:16,830 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:16,830 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:16,830 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:52:16,831 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:52:16,832 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-11-29 05:52:22,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:52:22,433 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22464 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:52:22,496 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:52:22,749 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked.
[2023-11-29 05:52:22,749 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:52:22,750 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:52:22,750 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968461118]
[2023-11-29 05:52:22,750 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:52:22,750 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158519365]
[2023-11-29 05:52:22,750 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158519365] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:52:22,750 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:52:22,752 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:52:22,752 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216099867]
[2023-11-29 05:52:22,752 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:52:22,755 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:52:22,755 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:52:22,758 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:52:22,758 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:52:22,760 INFO  L87              Difference]: Start difference. First operand 7782 states and 12938 transitions. Second operand  has 7 states, 7 states have (on average 652.4285714285714) internal successors, (4567), 7 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:23,214 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:52:23,214 INFO  L93              Difference]: Finished difference Result 21176 states and 35199 transitions.
[2023-11-29 05:52:23,214 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:52:23,215 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 652.4285714285714) internal successors, (4567), 7 states have internal predecessors, (4567), 0 states have call successors, (0), 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 5034
[2023-11-29 05:52:23,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:52:23,232 INFO  L225             Difference]: With dead ends: 21176
[2023-11-29 05:52:23,232 INFO  L226             Difference]: Without dead ends: 14336
[2023-11-29 05:52:23,238 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5043 GetRequests, 5031 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:52:23,238 INFO  L413           NwaCegarLoop]: 12544 mSDtfsCounter, 31808 mSDsluCounter, 48990 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31808 SdHoareTripleChecker+Valid, 61534 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:52:23,238 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31808 Valid, 61534 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:52:23,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14336 states.
[2023-11-29 05:52:23,338 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14336 to 7787.
[2023-11-29 05:52:23,345 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7787 states, 7786 states have (on average 1.6625995376316465) internal successors, (12945), 7786 states have internal predecessors, (12945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:23,355 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7787 states to 7787 states and 12945 transitions.
[2023-11-29 05:52:23,355 INFO  L78                 Accepts]: Start accepts. Automaton has 7787 states and 12945 transitions. Word has length 5034
[2023-11-29 05:52:23,358 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:52:23,358 INFO  L495      AbstractCegarLoop]: Abstraction has 7787 states and 12945 transitions.
[2023-11-29 05:52:23,359 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 652.4285714285714) internal successors, (4567), 7 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:23,359 INFO  L276                IsEmpty]: Start isEmpty. Operand 7787 states and 12945 transitions.
[2023-11-29 05:52:23,470 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5036
[2023-11-29 05:52:23,470 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:52:23,471 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:52:23,541 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2023-11-29 05:52:23,805 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:23,805 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:52:23,806 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:52:23,807 INFO  L85        PathProgramCache]: Analyzing trace with hash 1605068024, now seen corresponding path program 1 times
[2023-11-29 05:52:23,807 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:52:23,807 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752194301]
[2023-11-29 05:52:23,808 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:23,808 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:52:24,224 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:52:24,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811538410]
[2023-11-29 05:52:24,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:24,225 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:24,225 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:52:24,226 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:52:24,227 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-11-29 05:52:29,363 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:52:29,507 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22467 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:52:29,565 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:52:29,785 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked.
[2023-11-29 05:52:29,785 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:52:29,785 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:52:29,785 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752194301]
[2023-11-29 05:52:29,785 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:52:29,785 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811538410]
[2023-11-29 05:52:29,785 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811538410] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:52:29,786 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:52:29,787 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:52:29,787 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952254274]
[2023-11-29 05:52:29,788 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:52:29,790 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:52:29,790 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:52:29,792 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:52:29,792 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:52:29,793 INFO  L87              Difference]: Start difference. First operand 7787 states and 12945 transitions. Second operand  has 7 states, 7 states have (on average 653.1428571428571) internal successors, (4572), 7 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:30,175 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:52:30,175 INFO  L93              Difference]: Finished difference Result 21191 states and 35220 transitions.
[2023-11-29 05:52:30,175 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:52:30,177 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 653.1428571428571) internal successors, (4572), 7 states have internal predecessors, (4572), 0 states have call successors, (0), 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 5035
[2023-11-29 05:52:30,180 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:52:30,190 INFO  L225             Difference]: With dead ends: 21191
[2023-11-29 05:52:30,190 INFO  L226             Difference]: Without dead ends: 14340
[2023-11-29 05:52:30,196 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5044 GetRequests, 5032 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:52:30,196 INFO  L413           NwaCegarLoop]: 12534 mSDtfsCounter, 31812 mSDsluCounter, 48960 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31812 SdHoareTripleChecker+Valid, 61494 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:52:30,196 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31812 Valid, 61494 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:52:30,209 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14340 states.
[2023-11-29 05:52:30,279 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14340 to 7792.
[2023-11-29 05:52:30,285 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7792 states, 7791 states have (on average 1.662431010139905) internal successors, (12952), 7791 states have internal predecessors, (12952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:30,294 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7792 states to 7792 states and 12952 transitions.
[2023-11-29 05:52:30,294 INFO  L78                 Accepts]: Start accepts. Automaton has 7792 states and 12952 transitions. Word has length 5035
[2023-11-29 05:52:30,297 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:52:30,297 INFO  L495      AbstractCegarLoop]: Abstraction has 7792 states and 12952 transitions.
[2023-11-29 05:52:30,298 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 653.1428571428571) internal successors, (4572), 7 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:30,298 INFO  L276                IsEmpty]: Start isEmpty. Operand 7792 states and 12952 transitions.
[2023-11-29 05:52:30,396 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5037
[2023-11-29 05:52:30,396 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:52:30,398 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:52:30,461 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0
[2023-11-29 05:52:30,598 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:30,598 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:52:30,599 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:52:30,599 INFO  L85        PathProgramCache]: Analyzing trace with hash 1089440844, now seen corresponding path program 1 times
[2023-11-29 05:52:30,599 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:52:30,599 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183445393]
[2023-11-29 05:52:30,600 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:30,600 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:52:30,969 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:52:30,970 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813203397]
[2023-11-29 05:52:30,970 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:30,971 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:30,971 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:52:30,971 INFO  L229       MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:52:30,972 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process



WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED.



[2023-11-29 05:55:48,413 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0
[2023-11-29 05:55:48,547 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:55:48,547 INFO  L420      AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:55:48,547 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:55:48,548 INFO  L85        PathProgramCache]: Analyzing trace with hash 543127804, now seen corresponding path program 1 times
[2023-11-29 05:55:48,548 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:55:48,548 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505726555]
[2023-11-29 05:55:48,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:55:48,549 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:55:48,927 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:55:48,927 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737328365]
[2023-11-29 05:55:48,928 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:55:48,928 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:55:48,928 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:55:48,929 INFO  L229       MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:55:48,930 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process
[2023-11-29 05:55:54,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:55:54,308 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22565 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:55:54,367 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:55:54,602 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked.
[2023-11-29 05:55:54,602 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:55:54,602 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:55:54,602 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505726555]
[2023-11-29 05:55:54,603 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:55:54,603 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737328365]
[2023-11-29 05:55:54,603 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737328365] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:55:54,603 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:55:54,605 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:55:54,605 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966821644]
[2023-11-29 05:55:54,605 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:55:54,607 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:55:54,607 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:55:54,609 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:55:54,609 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:55:54,610 INFO  L87              Difference]: Start difference. First operand 7931 states and 13145 transitions. Second operand  has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:55:55,017 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:55:55,018 INFO  L93              Difference]: Finished difference Result 21623 states and 35820 transitions.
[2023-11-29 05:55:55,018 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:55:55,019 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 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 5065
[2023-11-29 05:55:55,022 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:55:55,033 INFO  L225             Difference]: With dead ends: 21623
[2023-11-29 05:55:55,033 INFO  L226             Difference]: Without dead ends: 14454
[2023-11-29 05:55:55,039 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5074 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:55:55,039 INFO  L413           NwaCegarLoop]: 12244 mSDtfsCounter, 31922 mSDsluCounter, 48090 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31922 SdHoareTripleChecker+Valid, 60334 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:55:55,039 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31922 Valid, 60334 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:55:55,053 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14454 states.
[2023-11-29 05:55:55,133 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14454 to 7936.
[2023-11-29 05:55:55,140 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7936 states, 7935 states have (on average 1.6574669187145559) internal successors, (13152), 7935 states have internal predecessors, (13152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:55:55,149 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7936 states to 7936 states and 13152 transitions.
[2023-11-29 05:55:55,149 INFO  L78                 Accepts]: Start accepts. Automaton has 7936 states and 13152 transitions. Word has length 5065
[2023-11-29 05:55:55,151 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:55:55,151 INFO  L495      AbstractCegarLoop]: Abstraction has 7936 states and 13152 transitions.
[2023-11-29 05:55:55,152 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:55:55,153 INFO  L276                IsEmpty]: Start isEmpty. Operand 7936 states and 13152 transitions.
[2023-11-29 05:55:55,256 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5067
[2023-11-29 05:55:55,256 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:55:55,257 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:55:55,323 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0
[2023-11-29 05:55:55,458 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:55:55,458 INFO  L420      AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:55:55,458 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:55:55,459 INFO  L85        PathProgramCache]: Analyzing trace with hash 425340462, now seen corresponding path program 1 times
[2023-11-29 05:55:55,459 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:55:55,460 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848984134]
[2023-11-29 05:55:55,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:55:55,461 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:55:55,976 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:55:55,976 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259454921]
[2023-11-29 05:55:55,977 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:55:55,977 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:55:55,977 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:55:55,978 INFO  L229       MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:55:55,979 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process
[2023-11-29 05:56:00,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:01,112 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22568 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:56:01,173 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:56:01,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked.
[2023-11-29 05:56:01,395 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:56:01,395 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:01,395 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848984134]
[2023-11-29 05:56:01,395 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:56:01,395 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259454921]
[2023-11-29 05:56:01,395 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259454921] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:01,395 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:01,396 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:56:01,396 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589835063]
[2023-11-29 05:56:01,397 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:01,398 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:56:01,399 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:01,400 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:56:01,400 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:56:01,401 INFO  L87              Difference]: Start difference. First operand 7936 states and 13152 transitions. Second operand  has 7 states, 7 states have (on average 674.7142857142857) internal successors, (4723), 7 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:01,786 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:01,786 INFO  L93              Difference]: Finished difference Result 21638 states and 35841 transitions.
[2023-11-29 05:56:01,787 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:56:01,788 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.7142857142857) internal successors, (4723), 7 states have internal predecessors, (4723), 0 states have call successors, (0), 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 5066
[2023-11-29 05:56:01,791 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:01,802 INFO  L225             Difference]: With dead ends: 21638
[2023-11-29 05:56:01,802 INFO  L226             Difference]: Without dead ends: 14458
[2023-11-29 05:56:01,807 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5075 GetRequests, 5063 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:56:01,807 INFO  L413           NwaCegarLoop]: 12234 mSDtfsCounter, 31926 mSDsluCounter, 48060 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31926 SdHoareTripleChecker+Valid, 60294 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:01,807 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31926 Valid, 60294 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:56:01,821 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14458 states.
[2023-11-29 05:56:01,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14458 to 7941.
[2023-11-29 05:56:01,908 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7941 states, 7940 states have (on average 1.6573047858942065) internal successors, (13159), 7940 states have internal predecessors, (13159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:01,917 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7941 states to 7941 states and 13159 transitions.
[2023-11-29 05:56:01,917 INFO  L78                 Accepts]: Start accepts. Automaton has 7941 states and 13159 transitions. Word has length 5066
[2023-11-29 05:56:01,920 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:01,920 INFO  L495      AbstractCegarLoop]: Abstraction has 7941 states and 13159 transitions.
[2023-11-29 05:56:01,921 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.7142857142857) internal successors, (4723), 7 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:01,921 INFO  L276                IsEmpty]: Start isEmpty. Operand 7941 states and 13159 transitions.
[2023-11-29 05:56:02,025 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5068
[2023-11-29 05:56:02,025 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:02,026 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:56:02,093 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0
[2023-11-29 05:56:02,226 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:02,227 INFO  L420      AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:02,227 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:02,227 INFO  L85        PathProgramCache]: Analyzing trace with hash 2146281842, now seen corresponding path program 1 times
[2023-11-29 05:56:02,228 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:02,228 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622678843]
[2023-11-29 05:56:02,228 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:02,228 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:02,604 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:02,604 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328378248]
[2023-11-29 05:56:02,605 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:02,605 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:02,605 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:02,606 INFO  L229       MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:02,607 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process
[2023-11-29 05:56:07,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:07,873 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22572 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:56:07,933 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:56:08,153 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2023-11-29 05:56:08,154 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:56:08,154 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:08,154 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622678843]
[2023-11-29 05:56:08,154 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:56:08,154 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328378248]
[2023-11-29 05:56:08,154 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328378248] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:08,154 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:08,155 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:56:08,155 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518215003]
[2023-11-29 05:56:08,155 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:08,157 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:56:08,157 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:08,159 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:56:08,159 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:56:08,160 INFO  L87              Difference]: Start difference. First operand 7941 states and 13159 transitions. Second operand  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:08,552 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:08,552 INFO  L93              Difference]: Finished difference Result 21653 states and 35862 transitions.
[2023-11-29 05:56:08,552 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:56:08,553 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 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 5067
[2023-11-29 05:56:08,557 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:08,567 INFO  L225             Difference]: With dead ends: 21653
[2023-11-29 05:56:08,567 INFO  L226             Difference]: Without dead ends: 14462
[2023-11-29 05:56:08,573 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5076 GetRequests, 5064 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:56:08,573 INFO  L413           NwaCegarLoop]: 12224 mSDtfsCounter, 31930 mSDsluCounter, 48030 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31930 SdHoareTripleChecker+Valid, 60254 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:08,573 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31930 Valid, 60254 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:56:08,588 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14462 states.
[2023-11-29 05:56:08,666 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14462 to 7946.
[2023-11-29 05:56:08,673 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7946 states, 7945 states have (on average 1.6571428571428573) internal successors, (13166), 7945 states have internal predecessors, (13166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:08,683 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7946 states to 7946 states and 13166 transitions.
[2023-11-29 05:56:08,683 INFO  L78                 Accepts]: Start accepts. Automaton has 7946 states and 13166 transitions. Word has length 5067
[2023-11-29 05:56:08,685 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:08,685 INFO  L495      AbstractCegarLoop]: Abstraction has 7946 states and 13166 transitions.
[2023-11-29 05:56:08,686 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:08,687 INFO  L276                IsEmpty]: Start isEmpty. Operand 7946 states and 13166 transitions.
[2023-11-29 05:56:08,790 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5069
[2023-11-29 05:56:08,790 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:08,791 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:56:08,858 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0
[2023-11-29 05:56:08,991 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74
[2023-11-29 05:56:08,991 INFO  L420      AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:08,992 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:08,993 INFO  L85        PathProgramCache]: Analyzing trace with hash 1731684284, now seen corresponding path program 1 times
[2023-11-29 05:56:08,993 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:08,993 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040719233]
[2023-11-29 05:56:08,994 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:08,994 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:09,538 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:09,539 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505699497]
[2023-11-29 05:56:09,539 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:09,539 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:09,540 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:09,540 INFO  L229       MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:09,541 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process
[2023-11-29 05:56:14,660 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:14,809 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22575 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:56:14,869 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:56:15,091 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked.
[2023-11-29 05:56:15,091 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:56:15,091 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:15,091 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040719233]
[2023-11-29 05:56:15,091 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:56:15,091 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505699497]
[2023-11-29 05:56:15,091 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [505699497] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:15,091 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:15,093 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:56:15,093 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668940074]
[2023-11-29 05:56:15,093 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:15,095 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:56:15,095 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:15,097 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:56:15,097 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:56:15,098 INFO  L87              Difference]: Start difference. First operand 7946 states and 13166 transitions. Second operand  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:15,484 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:15,484 INFO  L93              Difference]: Finished difference Result 21668 states and 35883 transitions.
[2023-11-29 05:56:15,484 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:56:15,485 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 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 5068
[2023-11-29 05:56:15,489 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:15,499 INFO  L225             Difference]: With dead ends: 21668
[2023-11-29 05:56:15,499 INFO  L226             Difference]: Without dead ends: 14466
[2023-11-29 05:56:15,505 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5077 GetRequests, 5065 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:56:15,505 INFO  L413           NwaCegarLoop]: 12214 mSDtfsCounter, 31934 mSDsluCounter, 48000 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31934 SdHoareTripleChecker+Valid, 60214 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:15,505 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31934 Valid, 60214 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:56:15,519 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14466 states.
[2023-11-29 05:56:15,598 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 7951.
[2023-11-29 05:56:15,605 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7951 states, 7950 states have (on average 1.6569811320754717) internal successors, (13173), 7950 states have internal predecessors, (13173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:15,614 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7951 states to 7951 states and 13173 transitions.
[2023-11-29 05:56:15,614 INFO  L78                 Accepts]: Start accepts. Automaton has 7951 states and 13173 transitions. Word has length 5068
[2023-11-29 05:56:15,617 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:15,617 INFO  L495      AbstractCegarLoop]: Abstraction has 7951 states and 13173 transitions.
[2023-11-29 05:56:15,618 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:15,618 INFO  L276                IsEmpty]: Start isEmpty. Operand 7951 states and 13173 transitions.
[2023-11-29 05:56:15,720 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5070
[2023-11-29 05:56:15,720 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:15,721 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:56:15,786 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0
[2023-11-29 05:56:15,922 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75
[2023-11-29 05:56:15,922 INFO  L420      AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:15,922 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:15,923 INFO  L85        PathProgramCache]: Analyzing trace with hash -1053413016, now seen corresponding path program 1 times
[2023-11-29 05:56:15,923 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:15,923 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123916937]
[2023-11-29 05:56:15,924 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:15,924 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:16,470 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:16,470 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898326812]
[2023-11-29 05:56:16,471 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:16,471 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:16,471 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:16,472 INFO  L229       MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:16,473 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process
[2023-11-29 05:56:21,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:21,816 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22579 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:56:21,876 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:56:22,091 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked.
[2023-11-29 05:56:22,091 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:56:22,091 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:22,091 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123916937]
[2023-11-29 05:56:22,092 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:56:22,092 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898326812]
[2023-11-29 05:56:22,092 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [898326812] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:22,092 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:22,093 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:56:22,093 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949374445]
[2023-11-29 05:56:22,093 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:22,095 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:56:22,095 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:22,097 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:56:22,097 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:56:22,098 INFO  L87              Difference]: Start difference. First operand 7951 states and 13173 transitions. Second operand  has 7 states, 7 states have (on average 676.8571428571429) internal successors, (4738), 7 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:22,491 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:22,491 INFO  L93              Difference]: Finished difference Result 21683 states and 35904 transitions.
[2023-11-29 05:56:22,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:56:22,493 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 676.8571428571429) internal successors, (4738), 7 states have internal predecessors, (4738), 0 states have call successors, (0), 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 5069
[2023-11-29 05:56:22,496 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:22,507 INFO  L225             Difference]: With dead ends: 21683
[2023-11-29 05:56:22,507 INFO  L226             Difference]: Without dead ends: 14470
[2023-11-29 05:56:22,513 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5078 GetRequests, 5066 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:56:22,513 INFO  L413           NwaCegarLoop]: 12204 mSDtfsCounter, 31938 mSDsluCounter, 47970 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31938 SdHoareTripleChecker+Valid, 60174 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:22,513 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31938 Valid, 60174 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:56:22,528 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14470 states.
[2023-11-29 05:56:22,605 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14470 to 7956.
[2023-11-29 05:56:22,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7956 states, 7955 states have (on average 1.6568196103079824) internal successors, (13180), 7955 states have internal predecessors, (13180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:22,621 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7956 states to 7956 states and 13180 transitions.
[2023-11-29 05:56:22,621 INFO  L78                 Accepts]: Start accepts. Automaton has 7956 states and 13180 transitions. Word has length 5069
[2023-11-29 05:56:22,624 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:22,624 INFO  L495      AbstractCegarLoop]: Abstraction has 7956 states and 13180 transitions.
[2023-11-29 05:56:22,625 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 676.8571428571429) internal successors, (4738), 7 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:22,625 INFO  L276                IsEmpty]: Start isEmpty. Operand 7956 states and 13180 transitions.
[2023-11-29 05:56:22,727 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5071
[2023-11-29 05:56:22,727 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:22,728 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:56:22,793 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0
[2023-11-29 05:56:22,928 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76
[2023-11-29 05:56:22,929 INFO  L420      AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:22,929 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:22,929 INFO  L85        PathProgramCache]: Analyzing trace with hash 1487860938, now seen corresponding path program 1 times
[2023-11-29 05:56:22,930 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:22,930 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349753060]
[2023-11-29 05:56:22,930 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:22,930 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:23,310 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:23,310 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746615699]
[2023-11-29 05:56:23,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:23,311 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:23,311 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:23,312 INFO  L229       MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:23,312 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process
[2023-11-29 05:56:28,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:28,605 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22582 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:56:28,667 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:56:28,914 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked.
[2023-11-29 05:56:28,914 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:56:28,915 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:28,915 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349753060]
[2023-11-29 05:56:28,915 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:56:28,915 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746615699]
[2023-11-29 05:56:28,915 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746615699] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:28,915 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:28,916 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:56:28,916 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891538195]
[2023-11-29 05:56:28,916 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:28,918 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:56:28,918 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:28,920 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:56:28,920 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:56:28,921 INFO  L87              Difference]: Start difference. First operand 7956 states and 13180 transitions. Second operand  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:29,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:29,402 INFO  L93              Difference]: Finished difference Result 21700 states and 35927 transitions.
[2023-11-29 05:56:29,402 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-11-29 05:56:29,403 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 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 5070
[2023-11-29 05:56:29,407 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:29,418 INFO  L225             Difference]: With dead ends: 21700
[2023-11-29 05:56:29,418 INFO  L226             Difference]: Without dead ends: 14476
[2023-11-29 05:56:29,424 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5080 GetRequests, 5066 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2023-11-29 05:56:29,424 INFO  L413           NwaCegarLoop]: 12193 mSDtfsCounter, 31941 mSDsluCounter, 60123 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31941 SdHoareTripleChecker+Valid, 72316 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:29,424 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31941 Valid, 72316 Invalid, 74 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:56:29,438 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14476 states.
[2023-11-29 05:56:29,517 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14476 to 7961.
[2023-11-29 05:56:29,524 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7961 states, 7960 states have (on average 1.6566582914572865) internal successors, (13187), 7960 states have internal predecessors, (13187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:29,533 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7961 states to 7961 states and 13187 transitions.
[2023-11-29 05:56:29,533 INFO  L78                 Accepts]: Start accepts. Automaton has 7961 states and 13187 transitions. Word has length 5070
[2023-11-29 05:56:29,536 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:29,536 INFO  L495      AbstractCegarLoop]: Abstraction has 7961 states and 13187 transitions.
[2023-11-29 05:56:29,537 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:29,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 7961 states and 13187 transitions.
[2023-11-29 05:56:29,642 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5072
[2023-11-29 05:56:29,642 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:29,643 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:56:29,707 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0
[2023-11-29 05:56:29,843 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77
[2023-11-29 05:56:29,843 INFO  L420      AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:29,844 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:29,844 INFO  L85        PathProgramCache]: Analyzing trace with hash -878645026, now seen corresponding path program 1 times
[2023-11-29 05:56:29,844 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:29,844 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126157303]
[2023-11-29 05:56:29,845 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:29,845 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:30,337 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:30,337 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320818392]
[2023-11-29 05:56:30,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:30,338 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:30,338 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:30,339 INFO  L229       MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:30,339 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process
[2023-11-29 05:56:35,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:35,531 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22586 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:56:35,590 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:56:35,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2023-11-29 05:56:35,824 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:56:35,825 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:35,825 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126157303]
[2023-11-29 05:56:35,825 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:56:35,825 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320818392]
[2023-11-29 05:56:35,825 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320818392] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:35,825 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:35,827 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:56:35,827 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331193545]
[2023-11-29 05:56:35,827 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:35,829 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:56:35,830 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:35,831 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:56:35,832 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:56:35,832 INFO  L87              Difference]: Start difference. First operand 7961 states and 13187 transitions. Second operand  has 7 states, 7 states have (on average 678.2857142857143) internal successors, (4748), 7 states have internal predecessors, (4748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:36,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:36,219 INFO  L93              Difference]: Finished difference Result 21713 states and 35946 transitions.
[2023-11-29 05:56:36,219 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:56:36,220 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.2857142857143) internal successors, (4748), 7 states have internal predecessors, (4748), 0 states have call successors, (0), 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 5071
[2023-11-29 05:56:36,224 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:36,235 INFO  L225             Difference]: With dead ends: 21713
[2023-11-29 05:56:36,235 INFO  L226             Difference]: Without dead ends: 14478
[2023-11-29 05:56:36,241 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5080 GetRequests, 5068 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:56:36,241 INFO  L413           NwaCegarLoop]: 12184 mSDtfsCounter, 31946 mSDsluCounter, 47910 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31946 SdHoareTripleChecker+Valid, 60094 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:36,241 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31946 Valid, 60094 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:56:36,258 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14478 states.
[2023-11-29 05:56:36,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14478 to 7966.
[2023-11-29 05:56:36,344 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7966 states, 7965 states have (on average 1.656497175141243) internal successors, (13194), 7965 states have internal predecessors, (13194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:36,353 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7966 states to 7966 states and 13194 transitions.
[2023-11-29 05:56:36,353 INFO  L78                 Accepts]: Start accepts. Automaton has 7966 states and 13194 transitions. Word has length 5071
[2023-11-29 05:56:36,356 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:36,356 INFO  L495      AbstractCegarLoop]: Abstraction has 7966 states and 13194 transitions.
[2023-11-29 05:56:36,357 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.2857142857143) internal successors, (4748), 7 states have internal predecessors, (4748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:36,357 INFO  L276                IsEmpty]: Start isEmpty. Operand 7966 states and 13194 transitions.
[2023-11-29 05:56:36,461 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5073
[2023-11-29 05:56:36,461 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:36,462 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:56:36,527 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0
[2023-11-29 05:56:36,662 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:36,662 INFO  L420      AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:36,663 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:36,663 INFO  L85        PathProgramCache]: Analyzing trace with hash -895011496, now seen corresponding path program 1 times
[2023-11-29 05:56:36,664 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:36,664 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206890380]
[2023-11-29 05:56:36,665 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:36,665 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:37,042 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:37,042 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998236992]
[2023-11-29 05:56:37,043 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:37,043 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:37,043 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:37,044 INFO  L229       MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:37,045 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process
[2023-11-29 05:56:41,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:42,075 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22589 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:56:42,134 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:56:42,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked.
[2023-11-29 05:56:42,372 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:56:42,372 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:42,372 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206890380]
[2023-11-29 05:56:42,372 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:56:42,372 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998236992]
[2023-11-29 05:56:42,372 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [998236992] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:42,372 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:42,374 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:56:42,374 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996991534]
[2023-11-29 05:56:42,374 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:42,376 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:56:42,376 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:42,378 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:56:42,378 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:56:42,379 INFO  L87              Difference]: Start difference. First operand 7966 states and 13194 transitions. Second operand  has 7 states, 7 states have (on average 679.0) internal successors, (4753), 7 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:42,776 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:42,776 INFO  L93              Difference]: Finished difference Result 21728 states and 35967 transitions.
[2023-11-29 05:56:42,777 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:56:42,778 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.0) internal successors, (4753), 7 states have internal predecessors, (4753), 0 states have call successors, (0), 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 5072
[2023-11-29 05:56:42,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:42,792 INFO  L225             Difference]: With dead ends: 21728
[2023-11-29 05:56:42,792 INFO  L226             Difference]: Without dead ends: 14482
[2023-11-29 05:56:42,798 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5081 GetRequests, 5069 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:56:42,798 INFO  L413           NwaCegarLoop]: 12174 mSDtfsCounter, 31950 mSDsluCounter, 47880 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31950 SdHoareTripleChecker+Valid, 60054 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:42,798 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31950 Valid, 60054 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:56:42,812 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14482 states.
[2023-11-29 05:56:42,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14482 to 7971.
[2023-11-29 05:56:42,899 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7971 states, 7970 states have (on average 1.65633626097867) internal successors, (13201), 7970 states have internal predecessors, (13201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:42,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7971 states to 7971 states and 13201 transitions.
[2023-11-29 05:56:42,908 INFO  L78                 Accepts]: Start accepts. Automaton has 7971 states and 13201 transitions. Word has length 5072
[2023-11-29 05:56:42,911 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:42,911 INFO  L495      AbstractCegarLoop]: Abstraction has 7971 states and 13201 transitions.
[2023-11-29 05:56:42,912 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.0) internal successors, (4753), 7 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:42,912 INFO  L276                IsEmpty]: Start isEmpty. Operand 7971 states and 13201 transitions.
[2023-11-29 05:56:43,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5074
[2023-11-29 05:56:43,019 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:43,019 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:56:43,086 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0
[2023-11-29 05:56:43,220 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79
[2023-11-29 05:56:43,220 INFO  L420      AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:43,221 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:43,222 INFO  L85        PathProgramCache]: Analyzing trace with hash -680671276, now seen corresponding path program 1 times
[2023-11-29 05:56:43,222 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:43,222 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422527459]
[2023-11-29 05:56:43,223 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:43,223 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:43,715 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:43,715 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386932894]
[2023-11-29 05:56:43,716 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:43,716 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:43,716 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:43,717 INFO  L229       MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:43,718 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process
[2023-11-29 05:56:48,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:48,732 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22593 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:56:48,792 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:56:49,010 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked.
[2023-11-29 05:56:49,010 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:56:49,010 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:49,010 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422527459]
[2023-11-29 05:56:49,010 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:56:49,010 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386932894]
[2023-11-29 05:56:49,011 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386932894] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:49,011 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:49,012 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:56:49,013 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910126103]
[2023-11-29 05:56:49,013 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:49,015 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:56:49,015 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:49,016 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:56:49,017 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:56:49,017 INFO  L87              Difference]: Start difference. First operand 7971 states and 13201 transitions. Second operand  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:49,405 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:49,405 INFO  L93              Difference]: Finished difference Result 21743 states and 35988 transitions.
[2023-11-29 05:56:49,406 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 05:56:49,407 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 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 5073
[2023-11-29 05:56:49,410 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:49,420 INFO  L225             Difference]: With dead ends: 21743
[2023-11-29 05:56:49,420 INFO  L226             Difference]: Without dead ends: 14486
[2023-11-29 05:56:49,426 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5082 GetRequests, 5070 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:56:49,426 INFO  L413           NwaCegarLoop]: 12164 mSDtfsCounter, 31954 mSDsluCounter, 47850 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31954 SdHoareTripleChecker+Valid, 60014 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:49,426 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31954 Valid, 60014 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:56:49,440 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14486 states.
[2023-11-29 05:56:49,519 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14486 to 7976.
[2023-11-29 05:56:49,526 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7976 states, 7975 states have (on average 1.6561755485893417) internal successors, (13208), 7975 states have internal predecessors, (13208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:49,535 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 13208 transitions.
[2023-11-29 05:56:49,535 INFO  L78                 Accepts]: Start accepts. Automaton has 7976 states and 13208 transitions. Word has length 5073
[2023-11-29 05:56:49,538 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:49,538 INFO  L495      AbstractCegarLoop]: Abstraction has 7976 states and 13208 transitions.
[2023-11-29 05:56:49,539 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:49,539 INFO  L276                IsEmpty]: Start isEmpty. Operand 7976 states and 13208 transitions.
[2023-11-29 05:56:49,643 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5075
[2023-11-29 05:56:49,643 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:49,644 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:56:49,709 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0
[2023-11-29 05:56:49,844 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:49,845 INFO  L420      AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:49,845 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:49,845 INFO  L85        PathProgramCache]: Analyzing trace with hash 308185446, now seen corresponding path program 1 times
[2023-11-29 05:56:49,845 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:49,845 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133129384]
[2023-11-29 05:56:49,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:49,846 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:50,216 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:50,216 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19636957]
[2023-11-29 05:56:50,217 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:50,217 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:50,217 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:50,218 INFO  L229       MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:50,219 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process
[2023-11-29 05:56:55,298 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:55,445 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22596 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:56:55,506 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:56:55,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked.
[2023-11-29 05:56:55,736 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:56:55,737 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:55,737 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133129384]
[2023-11-29 05:56:55,737 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:56:55,737 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19636957]
[2023-11-29 05:56:55,737 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [19636957] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:55,737 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:55,739 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:56:55,739 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123038643]
[2023-11-29 05:56:55,739 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:55,741 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:56:55,741 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:55,743 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:56:55,743 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:56:55,745 INFO  L87              Difference]: Start difference. First operand 7976 states and 13208 transitions. Second operand  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:56,130 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:56,130 INFO  L93              Difference]: Finished difference Result 21751 states and 35998 transitions.
[2023-11-29 05:56:56,130 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:56:56,131 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 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 5074
[2023-11-29 05:56:56,135 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:56,146 INFO  L225             Difference]: With dead ends: 21751
[2023-11-29 05:56:56,146 INFO  L226             Difference]: Without dead ends: 14483
[2023-11-29 05:56:56,152 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5082 GetRequests, 5071 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:56:56,152 INFO  L413           NwaCegarLoop]: 12155 mSDtfsCounter, 31950 mSDsluCounter, 47821 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31950 SdHoareTripleChecker+Valid, 59976 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:56,153 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31950 Valid, 59976 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:56:56,169 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14483 states.
[2023-11-29 05:56:56,248 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14483 to 7978.
[2023-11-29 05:56:56,255 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:56,264 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:56:56,265 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5074
[2023-11-29 05:56:56,267 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:56,267 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:56:56,268 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:56,268 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:56:56,370 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5076
[2023-11-29 05:56:56,371 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:56,371 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:56:56,436 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0
[2023-11-29 05:56:56,572 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:56,572 INFO  L420      AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:56,572 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:56,573 INFO  L85        PathProgramCache]: Analyzing trace with hash -892416594, now seen corresponding path program 1 times
[2023-11-29 05:56:56,573 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:56,573 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228347745]
[2023-11-29 05:56:56,573 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:56,574 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:57,103 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:57,103 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152328916]
[2023-11-29 05:56:57,104 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:57,104 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:57,104 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:57,105 INFO  L229       MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:57,106 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process
[2023-11-29 05:57:02,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:02,257 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22599 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:57:02,315 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:57:02,548 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked.
[2023-11-29 05:57:02,548 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:57:02,548 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:02,549 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228347745]
[2023-11-29 05:57:02,549 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:57:02,549 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152328916]
[2023-11-29 05:57:02,549 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152328916] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:02,549 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:02,550 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:57:02,551 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028819050]
[2023-11-29 05:57:02,551 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:02,554 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:57:02,554 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:02,557 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:57:02,557 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:57:02,558 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 680.0) internal successors, (4760), 7 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:02,949 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:02,950 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:57:02,950 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:57:02,951 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 680.0) internal successors, (4760), 7 states have internal predecessors, (4760), 0 states have call successors, (0), 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 5075
[2023-11-29 05:57:02,955 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:02,966 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:57:02,966 INFO  L226             Difference]: Without dead ends: 14491
[2023-11-29 05:57:02,971 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5083 GetRequests, 5072 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:57:02,972 INFO  L413           NwaCegarLoop]: 12165 mSDtfsCounter, 31946 mSDsluCounter, 47851 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31946 SdHoareTripleChecker+Valid, 60016 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:02,972 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31946 Valid, 60016 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:57:02,986 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14491 states.
[2023-11-29 05:57:03,065 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14491 to 7978.
[2023-11-29 05:57:03,072 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:03,081 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:57:03,081 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5075
[2023-11-29 05:57:03,083 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:03,083 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:57:03,084 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 680.0) internal successors, (4760), 7 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:03,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:57:03,190 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5077
[2023-11-29 05:57:03,190 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:03,191 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:57:03,257 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0
[2023-11-29 05:57:03,391 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:03,392 INFO  L420      AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:03,392 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:03,392 INFO  L85        PathProgramCache]: Analyzing trace with hash -1242637274, now seen corresponding path program 1 times
[2023-11-29 05:57:03,392 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:03,392 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410053623]
[2023-11-29 05:57:03,394 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:03,394 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:03,776 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:57:03,776 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282711593]
[2023-11-29 05:57:03,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:03,777 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:03,777 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:57:03,778 INFO  L229       MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:57:03,779 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process
[2023-11-29 05:57:08,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:09,052 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22602 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:57:09,111 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:57:09,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked.
[2023-11-29 05:57:09,353 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:57:09,353 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:09,353 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410053623]
[2023-11-29 05:57:09,354 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:57:09,354 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282711593]
[2023-11-29 05:57:09,354 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282711593] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:09,354 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:09,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:57:09,356 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776578804]
[2023-11-29 05:57:09,356 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:09,358 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:57:09,358 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:09,361 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:57:09,361 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:57:09,362 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 594.875) internal successors, (4759), 8 states have internal predecessors, (4759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:09,793 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:09,793 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:57:09,793 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:57:09,794 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 594.875) internal successors, (4759), 8 states have internal predecessors, (4759), 0 states have call successors, (0), 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 5076
[2023-11-29 05:57:09,797 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:09,808 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:57:09,808 INFO  L226             Difference]: Without dead ends: 14497
[2023-11-29 05:57:09,814 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5084 GetRequests, 5072 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:57:09,814 INFO  L413           NwaCegarLoop]: 12175 mSDtfsCounter, 31942 mSDsluCounter, 58634 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31942 SdHoareTripleChecker+Valid, 70809 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:09,815 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31942 Valid, 70809 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:57:09,829 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14497 states.
[2023-11-29 05:57:09,908 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14497 to 7978.
[2023-11-29 05:57:09,915 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:09,924 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:57:09,925 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5076
[2023-11-29 05:57:09,927 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:09,927 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:57:09,928 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 594.875) internal successors, (4759), 8 states have internal predecessors, (4759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:09,928 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:57:10,029 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5078
[2023-11-29 05:57:10,030 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:10,031 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:57:10,096 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0
[2023-11-29 05:57:10,231 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83
[2023-11-29 05:57:10,231 INFO  L420      AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:10,231 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:10,232 INFO  L85        PathProgramCache]: Analyzing trace with hash -162767062, now seen corresponding path program 1 times
[2023-11-29 05:57:10,232 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:10,232 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303532078]
[2023-11-29 05:57:10,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:10,233 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:10,783 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:57:10,783 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848321233]
[2023-11-29 05:57:10,784 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:10,784 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:10,784 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:57:10,785 INFO  L229       MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:57:10,787 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process
[2023-11-29 05:57:15,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:15,771 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22605 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:57:15,831 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:57:16,052 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked.
[2023-11-29 05:57:16,052 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:57:16,052 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:16,052 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303532078]
[2023-11-29 05:57:16,053 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:57:16,053 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848321233]
[2023-11-29 05:57:16,053 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [848321233] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:16,053 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:16,055 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:57:16,055 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148768764]
[2023-11-29 05:57:16,055 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:16,057 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:57:16,057 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:16,059 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:57:16,060 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:57:16,061 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:16,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:16,442 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:57:16,443 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:57:16,444 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 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 5077
[2023-11-29 05:57:16,448 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:16,458 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:57:16,458 INFO  L226             Difference]: Without dead ends: 14503
[2023-11-29 05:57:16,464 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5085 GetRequests, 5074 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:57:16,464 INFO  L413           NwaCegarLoop]: 12185 mSDtfsCounter, 31938 mSDsluCounter, 47911 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31938 SdHoareTripleChecker+Valid, 60096 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:16,464 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31938 Valid, 60096 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:57:16,478 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14503 states.
[2023-11-29 05:57:16,559 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14503 to 7978.
[2023-11-29 05:57:16,566 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:16,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:57:16,576 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5077
[2023-11-29 05:57:16,578 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:16,578 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:57:16,579 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:16,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:57:16,681 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5079
[2023-11-29 05:57:16,681 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:16,682 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:57:16,747 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0
[2023-11-29 05:57:16,882 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:16,883 INFO  L420      AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:16,883 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:16,883 INFO  L85        PathProgramCache]: Analyzing trace with hash 1455699558, now seen corresponding path program 1 times
[2023-11-29 05:57:16,883 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:16,883 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849972921]
[2023-11-29 05:57:16,884 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:16,884 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:17,266 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:57:17,266 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825505661]
[2023-11-29 05:57:17,267 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:17,267 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:17,267 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:57:17,268 INFO  L229       MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:57:17,269 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process
[2023-11-29 05:57:22,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:22,317 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22608 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:57:22,613 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:57:22,843 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked.
[2023-11-29 05:57:22,843 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:57:22,843 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:22,843 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849972921]
[2023-11-29 05:57:22,843 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:57:22,843 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825505661]
[2023-11-29 05:57:22,843 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825505661] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:22,843 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:22,845 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:57:22,845 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577879431]
[2023-11-29 05:57:22,845 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:22,847 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:57:22,847 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:22,849 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:57:22,849 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:57:22,851 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 594.625) internal successors, (4757), 8 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:23,303 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:23,303 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:57:23,304 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:57:23,305 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 594.625) internal successors, (4757), 8 states have internal predecessors, (4757), 0 states have call successors, (0), 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 5078
[2023-11-29 05:57:23,308 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:23,319 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:57:23,319 INFO  L226             Difference]: Without dead ends: 14509
[2023-11-29 05:57:23,325 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5086 GetRequests, 5074 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:57:23,325 INFO  L413           NwaCegarLoop]: 12195 mSDtfsCounter, 31934 mSDsluCounter, 58700 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31934 SdHoareTripleChecker+Valid, 70895 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:23,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31934 Valid, 70895 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:57:23,340 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14509 states.
[2023-11-29 05:57:23,422 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14509 to 7978.
[2023-11-29 05:57:23,429 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:23,438 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:57:23,439 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5078
[2023-11-29 05:57:23,441 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:23,442 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:57:23,443 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 594.625) internal successors, (4757), 8 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:23,443 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:57:23,547 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5080
[2023-11-29 05:57:23,547 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:23,548 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:57:23,614 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0
[2023-11-29 05:57:23,749 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:23,749 INFO  L420      AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:23,749 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:23,750 INFO  L85        PathProgramCache]: Analyzing trace with hash -1994345434, now seen corresponding path program 1 times
[2023-11-29 05:57:23,750 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:23,750 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560522442]
[2023-11-29 05:57:23,750 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:23,750 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:24,142 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:57:24,142 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94068572]
[2023-11-29 05:57:24,143 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:24,143 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:24,143 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:57:24,144 INFO  L229       MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:57:24,145 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process
[2023-11-29 05:57:29,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:29,676 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22611 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:57:29,736 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:57:29,958 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked.
[2023-11-29 05:57:29,958 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:57:29,958 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:29,958 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560522442]
[2023-11-29 05:57:29,958 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:57:29,958 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94068572]
[2023-11-29 05:57:29,958 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [94068572] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:29,958 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:29,960 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:57:29,960 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818960073]
[2023-11-29 05:57:29,960 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:29,962 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:57:29,962 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:29,964 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:57:29,964 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:57:29,966 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 679.4285714285714) internal successors, (4756), 7 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:30,383 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:30,383 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:57:30,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:57:30,385 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.4285714285714) internal successors, (4756), 7 states have internal predecessors, (4756), 0 states have call successors, (0), 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 5079
[2023-11-29 05:57:30,388 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:30,399 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:57:30,399 INFO  L226             Difference]: Without dead ends: 14515
[2023-11-29 05:57:30,405 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5087 GetRequests, 5076 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:57:30,405 INFO  L413           NwaCegarLoop]: 12205 mSDtfsCounter, 31930 mSDsluCounter, 47971 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31930 SdHoareTripleChecker+Valid, 60176 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:30,405 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31930 Valid, 60176 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:57:30,419 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14515 states.
[2023-11-29 05:57:30,497 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14515 to 7978.
[2023-11-29 05:57:30,504 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:30,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:57:30,513 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5079
[2023-11-29 05:57:30,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:30,516 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:57:30,517 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.4285714285714) internal successors, (4756), 7 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:30,517 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:57:30,623 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5081
[2023-11-29 05:57:30,623 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:30,624 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:57:30,691 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0
[2023-11-29 05:57:30,824 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:30,824 INFO  L420      AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:30,825 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:30,825 INFO  L85        PathProgramCache]: Analyzing trace with hash 1892816934, now seen corresponding path program 1 times
[2023-11-29 05:57:30,825 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:30,825 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161158101]
[2023-11-29 05:57:30,826 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:30,826 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:31,205 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:57:31,205 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887589793]
[2023-11-29 05:57:31,206 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:31,206 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:31,206 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:57:31,207 INFO  L229       MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:57:31,208 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process
[2023-11-29 05:57:36,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:36,507 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22614 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:57:36,567 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:57:36,794 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked.
[2023-11-29 05:57:36,794 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:57:36,794 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:36,794 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161158101]
[2023-11-29 05:57:36,794 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:57:36,794 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887589793]
[2023-11-29 05:57:36,794 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887589793] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:36,794 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:36,795 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:57:36,796 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582217529]
[2023-11-29 05:57:36,796 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:36,798 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:57:36,798 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:36,800 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:57:36,800 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:57:36,801 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 594.375) internal successors, (4755), 8 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:37,230 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:37,230 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:57:37,230 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:57:37,231 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 594.375) internal successors, (4755), 8 states have internal predecessors, (4755), 0 states have call successors, (0), 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 5080
[2023-11-29 05:57:37,235 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:37,246 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:57:37,246 INFO  L226             Difference]: Without dead ends: 14521
[2023-11-29 05:57:37,252 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5088 GetRequests, 5076 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:57:37,252 INFO  L413           NwaCegarLoop]: 12215 mSDtfsCounter, 31926 mSDsluCounter, 58766 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31926 SdHoareTripleChecker+Valid, 70981 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:37,252 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31926 Valid, 70981 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:57:37,267 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14521 states.
[2023-11-29 05:57:37,347 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14521 to 7978.
[2023-11-29 05:57:37,354 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:37,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:57:37,364 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5080
[2023-11-29 05:57:37,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:37,366 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:57:37,367 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 594.375) internal successors, (4755), 8 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:37,368 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:57:37,475 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5082
[2023-11-29 05:57:37,475 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:37,476 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:57:37,541 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0
[2023-11-29 05:57:37,676 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:37,677 INFO  L420      AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:37,677 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:37,677 INFO  L85        PathProgramCache]: Analyzing trace with hash -1114764126, now seen corresponding path program 1 times
[2023-11-29 05:57:37,677 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:37,678 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492394927]
[2023-11-29 05:57:37,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:37,678 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:38,102 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:57:38,102 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375636465]
[2023-11-29 05:57:38,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:38,103 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:38,103 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:57:38,104 INFO  L229       MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:57:38,105 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process
[2023-11-29 05:57:43,246 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:43,394 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22617 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:57:43,454 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:57:43,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked.
[2023-11-29 05:57:43,676 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:57:43,676 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:43,676 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492394927]
[2023-11-29 05:57:43,676 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:57:43,676 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375636465]
[2023-11-29 05:57:43,676 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375636465] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:43,676 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:43,677 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:57:43,678 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278331984]
[2023-11-29 05:57:43,678 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:43,680 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:57:43,680 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:43,681 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:57:43,682 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:57:43,683 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 679.1428571428571) internal successors, (4754), 7 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:44,068 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:44,068 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:57:44,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:57:44,069 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.1428571428571) internal successors, (4754), 7 states have internal predecessors, (4754), 0 states have call successors, (0), 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 5081
[2023-11-29 05:57:44,073 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:44,083 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:57:44,084 INFO  L226             Difference]: Without dead ends: 14527
[2023-11-29 05:57:44,089 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5089 GetRequests, 5078 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:57:44,089 INFO  L413           NwaCegarLoop]: 12225 mSDtfsCounter, 31922 mSDsluCounter, 48031 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31922 SdHoareTripleChecker+Valid, 60256 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:44,090 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31922 Valid, 60256 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:57:44,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14527 states.
[2023-11-29 05:57:44,186 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14527 to 7978.
[2023-11-29 05:57:44,193 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:44,203 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:57:44,203 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5081
[2023-11-29 05:57:44,205 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:44,205 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:57:44,207 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.1428571428571) internal successors, (4754), 7 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:44,207 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:57:44,314 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5083
[2023-11-29 05:57:44,314 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:44,315 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:57:44,381 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0
[2023-11-29 05:57:44,516 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:44,516 INFO  L420      AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:44,516 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:44,517 INFO  L85        PathProgramCache]: Analyzing trace with hash 82051430, now seen corresponding path program 1 times
[2023-11-29 05:57:44,517 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:44,517 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017868864]
[2023-11-29 05:57:44,518 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:44,518 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:44,922 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:57:44,922 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046723413]
[2023-11-29 05:57:44,923 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:44,923 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:44,923 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:57:44,924 INFO  L229       MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:57:44,925 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process
[2023-11-29 05:57:50,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:50,276 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22620 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:57:50,335 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:57:50,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked.
[2023-11-29 05:57:50,570 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:57:50,570 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:50,570 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017868864]
[2023-11-29 05:57:50,570 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:57:50,570 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046723413]
[2023-11-29 05:57:50,570 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046723413] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:50,570 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:50,572 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:57:50,572 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619536532]
[2023-11-29 05:57:50,572 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:50,575 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:57:50,575 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:50,577 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:57:50,578 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:57:50,579 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 594.125) internal successors, (4753), 8 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:51,026 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:51,026 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:57:51,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:57:51,027 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 594.125) internal successors, (4753), 8 states have internal predecessors, (4753), 0 states have call successors, (0), 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 5082
[2023-11-29 05:57:51,031 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:51,041 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:57:51,041 INFO  L226             Difference]: Without dead ends: 14533
[2023-11-29 05:57:51,047 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5090 GetRequests, 5078 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:57:51,048 INFO  L413           NwaCegarLoop]: 12235 mSDtfsCounter, 31918 mSDsluCounter, 60287 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31918 SdHoareTripleChecker+Valid, 72522 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:51,048 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31918 Valid, 72522 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:57:51,062 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14533 states.
[2023-11-29 05:57:51,141 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14533 to 7978.
[2023-11-29 05:57:51,148 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:51,157 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:57:51,158 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5082
[2023-11-29 05:57:51,160 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:51,160 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:57:51,161 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 594.125) internal successors, (4753), 8 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:51,161 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:57:51,268 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5084
[2023-11-29 05:57:51,269 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:51,270 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:57:51,335 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0
[2023-11-29 05:57:51,470 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89
[2023-11-29 05:57:51,470 INFO  L420      AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:51,470 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:51,471 INFO  L85        PathProgramCache]: Analyzing trace with hash 204384414, now seen corresponding path program 1 times
[2023-11-29 05:57:51,471 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:51,471 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288047530]
[2023-11-29 05:57:51,472 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:51,472 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:51,859 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:57:51,859 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657236798]
[2023-11-29 05:57:51,860 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:51,860 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:51,860 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:57:51,861 INFO  L229       MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:57:51,862 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process
[2023-11-29 05:57:56,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:57,137 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22623 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:57:57,196 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:57:57,431 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2023-11-29 05:57:57,431 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:57:57,432 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:57,432 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288047530]
[2023-11-29 05:57:57,432 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:57:57,432 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657236798]
[2023-11-29 05:57:57,432 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [657236798] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:57,432 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:57,433 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:57:57,433 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528933999]
[2023-11-29 05:57:57,434 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:57,435 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:57:57,436 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:57,437 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:57:57,438 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:57:57,439 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:57,837 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:57,838 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:57:57,838 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:57:57,839 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 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 5083
[2023-11-29 05:57:57,842 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:57,853 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:57:57,853 INFO  L226             Difference]: Without dead ends: 14539
[2023-11-29 05:57:57,859 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5091 GetRequests, 5080 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:57:57,859 INFO  L413           NwaCegarLoop]: 12245 mSDtfsCounter, 31914 mSDsluCounter, 48091 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31914 SdHoareTripleChecker+Valid, 60336 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:57,859 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31914 Valid, 60336 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:57:57,873 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14539 states.
[2023-11-29 05:57:57,953 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14539 to 7978.
[2023-11-29 05:57:57,961 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:57,970 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:57:57,970 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5083
[2023-11-29 05:57:57,973 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:57,973 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:57:57,974 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:57,974 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:57:58,079 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5085
[2023-11-29 05:57:58,079 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:58,080 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:57:58,145 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0
[2023-11-29 05:57:58,280 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:58,281 INFO  L420      AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:58,281 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:58,281 INFO  L85        PathProgramCache]: Analyzing trace with hash -2002947546, now seen corresponding path program 1 times
[2023-11-29 05:57:58,282 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:58,282 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017292539]
[2023-11-29 05:57:58,282 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:58,282 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:58,672 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:57:58,672 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603971617]
[2023-11-29 05:57:58,673 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:58,673 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:58,673 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:57:58,674 INFO  L229       MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:57:58,674 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process
[2023-11-29 05:58:03,955 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:04,103 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22626 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:58:04,163 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:58:04,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked.
[2023-11-29 05:58:04,411 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:58:04,411 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:04,411 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017292539]
[2023-11-29 05:58:04,411 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:58:04,412 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603971617]
[2023-11-29 05:58:04,412 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603971617] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:04,412 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:04,414 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:58:04,414 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360981221]
[2023-11-29 05:58:04,414 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:04,416 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:58:04,416 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:04,419 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:58:04,419 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:58:04,420 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.875) internal successors, (4751), 8 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:04,860 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:04,860 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:58:04,860 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:58:04,862 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.875) internal successors, (4751), 8 states have internal predecessors, (4751), 0 states have call successors, (0), 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 5084
[2023-11-29 05:58:04,865 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:04,876 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:58:04,876 INFO  L226             Difference]: Without dead ends: 14545
[2023-11-29 05:58:04,883 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5092 GetRequests, 5080 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:58:04,884 INFO  L413           NwaCegarLoop]: 12255 mSDtfsCounter, 31910 mSDsluCounter, 58898 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31910 SdHoareTripleChecker+Valid, 71153 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:04,884 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31910 Valid, 71153 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:58:04,898 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14545 states.
[2023-11-29 05:58:04,976 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14545 to 7978.
[2023-11-29 05:58:04,983 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:04,992 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:58:04,992 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5084
[2023-11-29 05:58:04,995 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:04,995 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:58:04,996 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.875) internal successors, (4751), 8 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:04,996 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:58:05,095 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5086
[2023-11-29 05:58:05,095 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:05,096 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:58:05,160 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0
[2023-11-29 05:58:05,296 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:05,297 INFO  L420      AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:58:05,297 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:58:05,297 INFO  L85        PathProgramCache]: Analyzing trace with hash -1208694758, now seen corresponding path program 1 times
[2023-11-29 05:58:05,297 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:58:05,297 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989621805]
[2023-11-29 05:58:05,298 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:05,298 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:58:05,704 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:58:05,704 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298453957]
[2023-11-29 05:58:05,705 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:05,705 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:05,705 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:58:05,706 INFO  L229       MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:58:05,707 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process
[2023-11-29 05:58:10,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:11,120 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22629 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:58:11,180 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:58:11,405 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked.
[2023-11-29 05:58:11,405 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:58:11,405 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:11,405 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989621805]
[2023-11-29 05:58:11,405 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:58:11,405 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298453957]
[2023-11-29 05:58:11,406 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298453957] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:11,406 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:11,407 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:58:11,408 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950053189]
[2023-11-29 05:58:11,408 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:11,410 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:58:11,410 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:11,413 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:58:11,413 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:58:11,414 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 678.5714285714286) internal successors, (4750), 7 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:11,801 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:11,801 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:58:11,801 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:58:11,802 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.5714285714286) internal successors, (4750), 7 states have internal predecessors, (4750), 0 states have call successors, (0), 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 5085
[2023-11-29 05:58:11,807 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:11,818 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:58:11,818 INFO  L226             Difference]: Without dead ends: 14551
[2023-11-29 05:58:11,824 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5093 GetRequests, 5082 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:58:11,824 INFO  L413           NwaCegarLoop]: 12265 mSDtfsCounter, 31906 mSDsluCounter, 48151 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31906 SdHoareTripleChecker+Valid, 60416 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:11,824 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31906 Valid, 60416 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:58:11,838 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14551 states.
[2023-11-29 05:58:11,918 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14551 to 7978.
[2023-11-29 05:58:11,925 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:11,934 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:58:11,934 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5085
[2023-11-29 05:58:11,938 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:11,938 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:58:11,939 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.5714285714286) internal successors, (4750), 7 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:11,939 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:58:12,049 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5087
[2023-11-29 05:58:12,050 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:12,051 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:58:12,115 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0
[2023-11-29 05:58:12,251 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:12,251 INFO  L420      AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:58:12,251 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:58:12,252 INFO  L85        PathProgramCache]: Analyzing trace with hash 1450830438, now seen corresponding path program 1 times
[2023-11-29 05:58:12,252 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:58:12,252 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213175372]
[2023-11-29 05:58:12,253 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:12,253 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:58:12,637 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:58:12,637 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450142103]
[2023-11-29 05:58:12,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:12,638 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:12,638 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:58:12,639 INFO  L229       MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:58:12,639 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process
[2023-11-29 05:58:17,586 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:17,736 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22632 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:58:17,795 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:58:18,037 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked.
[2023-11-29 05:58:18,037 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:58:18,037 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:18,037 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213175372]
[2023-11-29 05:58:18,038 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:58:18,038 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450142103]
[2023-11-29 05:58:18,038 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [450142103] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:18,038 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:18,040 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:58:18,040 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550905679]
[2023-11-29 05:58:18,040 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:18,042 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:58:18,042 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:18,045 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:58:18,045 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:58:18,046 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.625) internal successors, (4749), 8 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:18,491 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:18,491 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:58:18,491 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:58:18,492 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.625) internal successors, (4749), 8 states have internal predecessors, (4749), 0 states have call successors, (0), 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 5086
[2023-11-29 05:58:18,496 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:18,507 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:58:18,507 INFO  L226             Difference]: Without dead ends: 14557
[2023-11-29 05:58:18,512 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5094 GetRequests, 5082 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:58:18,513 INFO  L413           NwaCegarLoop]: 12275 mSDtfsCounter, 31902 mSDsluCounter, 58964 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31902 SdHoareTripleChecker+Valid, 71239 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:18,513 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31902 Valid, 71239 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:58:18,527 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14557 states.
[2023-11-29 05:58:18,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14557 to 7978.
[2023-11-29 05:58:18,614 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:18,623 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:58:18,623 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5086
[2023-11-29 05:58:18,626 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:18,626 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:58:18,627 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.625) internal successors, (4749), 8 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:18,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:58:18,732 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5088
[2023-11-29 05:58:18,732 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:18,733 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:58:18,800 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0
[2023-11-29 05:58:18,933 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:18,934 INFO  L420      AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:58:18,934 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:58:18,935 INFO  L85        PathProgramCache]: Analyzing trace with hash -634737898, now seen corresponding path program 1 times
[2023-11-29 05:58:18,935 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:58:18,935 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554433419]
[2023-11-29 05:58:18,935 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:18,935 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:58:19,324 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:58:19,324 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122515961]
[2023-11-29 05:58:19,325 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:19,325 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:19,325 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:58:19,326 INFO  L229       MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:58:19,327 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process
[2023-11-29 05:58:24,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:24,782 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22635 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:58:24,842 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:58:25,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked.
[2023-11-29 05:58:25,088 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:58:25,089 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:25,089 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554433419]
[2023-11-29 05:58:25,089 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:58:25,089 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122515961]
[2023-11-29 05:58:25,089 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122515961] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:25,089 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:25,091 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:58:25,091 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308584589]
[2023-11-29 05:58:25,091 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:25,094 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:58:25,094 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:25,097 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:58:25,097 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:58:25,099 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.375) internal successors, (4747), 8 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:25,582 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:25,582 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:58:25,583 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:58:25,584 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.375) internal successors, (4747), 8 states have internal predecessors, (4747), 0 states have call successors, (0), 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 5087
[2023-11-29 05:58:25,588 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:25,598 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:58:25,598 INFO  L226             Difference]: Without dead ends: 14566
[2023-11-29 05:58:25,604 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5095 GetRequests, 5083 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:58:25,604 INFO  L413           NwaCegarLoop]: 12290 mSDtfsCounter, 31899 mSDsluCounter, 59015 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31899 SdHoareTripleChecker+Valid, 71305 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:25,605 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31899 Valid, 71305 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:58:25,619 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14566 states.
[2023-11-29 05:58:25,699 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14566 to 7978.
[2023-11-29 05:58:25,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:25,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:58:25,716 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5087
[2023-11-29 05:58:25,718 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:25,718 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:58:25,719 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.375) internal successors, (4747), 8 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:25,719 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:58:25,826 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5089
[2023-11-29 05:58:25,826 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:25,827 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:58:25,892 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0
[2023-11-29 05:58:26,027 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:26,027 INFO  L420      AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:58:26,028 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:58:26,029 INFO  L85        PathProgramCache]: Analyzing trace with hash 1305736462, now seen corresponding path program 1 times
[2023-11-29 05:58:26,029 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:58:26,029 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492251467]
[2023-11-29 05:58:26,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:26,030 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:58:26,414 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:58:26,414 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428283915]
[2023-11-29 05:58:26,415 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:26,415 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:26,415 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:58:26,416 INFO  L229       MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:58:26,416 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process
[2023-11-29 05:58:31,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:31,815 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22639 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:58:31,875 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:58:32,108 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked.
[2023-11-29 05:58:32,108 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:58:32,108 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:32,108 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492251467]
[2023-11-29 05:58:32,108 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:58:32,108 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428283915]
[2023-11-29 05:58:32,108 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428283915] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:32,108 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:32,110 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:58:32,110 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425683250]
[2023-11-29 05:58:32,110 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:32,113 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:58:32,113 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:32,116 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:58:32,116 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:58:32,117 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.25) internal successors, (4746), 8 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:32,544 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:32,544 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:58:32,545 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:58:32,546 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.25) internal successors, (4746), 8 states have internal predecessors, (4746), 0 states have call successors, (0), 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 5088
[2023-11-29 05:58:32,549 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:32,559 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:58:32,560 INFO  L226             Difference]: Without dead ends: 14572
[2023-11-29 05:58:32,565 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5096 GetRequests, 5084 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:58:32,566 INFO  L413           NwaCegarLoop]: 12300 mSDtfsCounter, 31895 mSDsluCounter, 59048 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31895 SdHoareTripleChecker+Valid, 71348 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:32,566 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31895 Valid, 71348 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:58:32,580 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14572 states.
[2023-11-29 05:58:32,660 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14572 to 7978.
[2023-11-29 05:58:32,667 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:32,677 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:58:32,677 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5088
[2023-11-29 05:58:32,679 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:32,679 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:58:32,680 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.25) internal successors, (4746), 8 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:32,680 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:58:32,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5090
[2023-11-29 05:58:32,787 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:32,788 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:58:32,852 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0
[2023-11-29 05:58:32,988 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:32,989 INFO  L420      AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:58:32,989 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:58:32,990 INFO  L85        PathProgramCache]: Analyzing trace with hash 227722964, now seen corresponding path program 1 times
[2023-11-29 05:58:32,990 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:58:32,990 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83413946]
[2023-11-29 05:58:32,991 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:32,991 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:58:33,376 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:58:33,376 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490555766]
[2023-11-29 05:58:33,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:33,377 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:33,377 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:58:33,378 INFO  L229       MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:58:33,379 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process
[2023-11-29 05:58:38,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:38,610 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22642 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:58:38,670 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:58:38,909 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked.
[2023-11-29 05:58:38,909 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:58:38,909 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:38,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83413946]
[2023-11-29 05:58:38,909 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:58:38,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490555766]
[2023-11-29 05:58:38,909 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490555766] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:38,910 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:38,911 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:58:38,911 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123686447]
[2023-11-29 05:58:38,912 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:38,914 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:58:38,914 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:38,917 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:58:38,917 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:58:38,918 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.125) internal successors, (4745), 8 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:39,363 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:39,363 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:58:39,363 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:58:39,364 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.125) internal successors, (4745), 8 states have internal predecessors, (4745), 0 states have call successors, (0), 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 5089
[2023-11-29 05:58:39,368 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:39,379 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:58:39,379 INFO  L226             Difference]: Without dead ends: 14578
[2023-11-29 05:58:39,384 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5097 GetRequests, 5085 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:58:39,384 INFO  L413           NwaCegarLoop]: 12310 mSDtfsCounter, 31891 mSDsluCounter, 59081 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31891 SdHoareTripleChecker+Valid, 71391 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:39,385 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31891 Valid, 71391 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:58:39,398 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14578 states.
[2023-11-29 05:58:39,478 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14578 to 7978.
[2023-11-29 05:58:39,485 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:39,494 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:58:39,494 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5089
[2023-11-29 05:58:39,496 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:39,496 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:58:39,497 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.125) internal successors, (4745), 8 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:39,498 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:58:39,601 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5091
[2023-11-29 05:58:39,601 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:39,602 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:58:39,668 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0
[2023-11-29 05:58:39,802 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96
[2023-11-29 05:58:39,803 INFO  L420      AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:58:39,803 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:58:39,803 INFO  L85        PathProgramCache]: Analyzing trace with hash 1732653968, now seen corresponding path program 1 times
[2023-11-29 05:58:39,803 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:58:39,803 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116911943]
[2023-11-29 05:58:39,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:39,804 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:58:40,216 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:58:40,216 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633552503]
[2023-11-29 05:58:40,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:40,218 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:40,218 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:58:40,219 INFO  L229       MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:58:40,219 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process
[2023-11-29 05:58:45,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:45,386 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22646 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:58:45,448 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:58:45,703 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked.
[2023-11-29 05:58:45,703 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:58:45,703 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:45,703 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116911943]
[2023-11-29 05:58:45,703 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:58:45,703 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633552503]
[2023-11-29 05:58:45,703 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633552503] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:45,703 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:45,704 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:58:45,705 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220168943]
[2023-11-29 05:58:45,705 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:45,707 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:58:45,707 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:45,708 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:58:45,709 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:58:45,710 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.0) internal successors, (4744), 8 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:46,174 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:46,174 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:58:46,174 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:58:46,175 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.0) internal successors, (4744), 8 states have internal predecessors, (4744), 0 states have call successors, (0), 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 5090
[2023-11-29 05:58:46,179 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:46,190 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:58:46,190 INFO  L226             Difference]: Without dead ends: 14584
[2023-11-29 05:58:46,195 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5098 GetRequests, 5086 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:58:46,196 INFO  L413           NwaCegarLoop]: 12320 mSDtfsCounter, 31887 mSDsluCounter, 60627 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31887 SdHoareTripleChecker+Valid, 72947 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:46,196 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31887 Valid, 72947 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:58:46,210 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14584 states.
[2023-11-29 05:58:46,291 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14584 to 7978.
[2023-11-29 05:58:46,298 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:46,307 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:58:46,308 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5090
[2023-11-29 05:58:46,310 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:46,310 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:58:46,311 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.0) internal successors, (4744), 8 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:46,311 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:58:46,418 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5092
[2023-11-29 05:58:46,418 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:46,419 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:58:46,485 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0
[2023-11-29 05:58:46,619 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97
[2023-11-29 05:58:46,620 INFO  L420      AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:58:46,620 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:58:46,621 INFO  L85        PathProgramCache]: Analyzing trace with hash 1388998802, now seen corresponding path program 1 times
[2023-11-29 05:58:46,621 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:58:46,621 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931723492]
[2023-11-29 05:58:46,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:46,621 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:58:47,004 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:58:47,004 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045394658]
[2023-11-29 05:58:47,005 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:47,006 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:47,006 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:58:47,006 INFO  L229       MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:58:47,007 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process
[2023-11-29 05:58:52,186 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:52,333 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22649 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:58:52,392 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:58:52,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked.
[2023-11-29 05:58:52,615 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:58:52,615 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:52,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931723492]
[2023-11-29 05:58:52,616 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:58:52,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045394658]
[2023-11-29 05:58:52,616 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045394658] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:52,616 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:52,618 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:58:52,618 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122512290]
[2023-11-29 05:58:52,618 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:52,620 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:58:52,621 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:52,623 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:58:52,623 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:58:52,624 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:53,071 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:53,071 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:58:53,072 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:58:53,073 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 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 5091
[2023-11-29 05:58:53,076 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:53,087 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:58:53,087 INFO  L226             Difference]: Without dead ends: 14590
[2023-11-29 05:58:53,093 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5099 GetRequests, 5087 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:58:53,093 INFO  L413           NwaCegarLoop]: 12330 mSDtfsCounter, 31883 mSDsluCounter, 60667 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31883 SdHoareTripleChecker+Valid, 72997 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:53,093 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31883 Valid, 72997 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:58:53,107 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14590 states.
[2023-11-29 05:58:53,188 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14590 to 7978.
[2023-11-29 05:58:53,195 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:53,204 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:58:53,204 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5091
[2023-11-29 05:58:53,207 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:53,207 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:58:53,208 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:53,208 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:58:53,314 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5093
[2023-11-29 05:58:53,314 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:53,315 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:58:53,383 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0
[2023-11-29 05:58:53,515 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98
[2023-11-29 05:58:53,516 INFO  L420      AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:58:53,516 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:58:53,516 INFO  L85        PathProgramCache]: Analyzing trace with hash 723239954, now seen corresponding path program 1 times
[2023-11-29 05:58:53,517 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:58:53,517 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264691177]
[2023-11-29 05:58:53,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:53,517 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:58:53,902 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:58:53,902 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317680790]
[2023-11-29 05:58:53,903 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:53,903 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:53,903 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:58:53,904 INFO  L229       MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:58:53,905 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process
[2023-11-29 05:58:58,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:59,016 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22653 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:58:59,076 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:58:59,330 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked.
[2023-11-29 05:58:59,330 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:58:59,331 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:59,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264691177]
[2023-11-29 05:58:59,331 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:58:59,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317680790]
[2023-11-29 05:58:59,331 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317680790] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:59,331 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:59,333 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:58:59,333 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291494476]
[2023-11-29 05:58:59,333 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:59,335 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:58:59,335 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:59,337 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:58:59,337 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:58:59,338 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 677.4285714285714) internal successors, (4742), 7 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:59,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:59,732 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:58:59,732 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:58:59,733 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 677.4285714285714) internal successors, (4742), 7 states have internal predecessors, (4742), 0 states have call successors, (0), 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 5092
[2023-11-29 05:58:59,737 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:59,747 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:58:59,747 INFO  L226             Difference]: Without dead ends: 14596
[2023-11-29 05:58:59,752 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5100 GetRequests, 5089 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:58:59,752 INFO  L413           NwaCegarLoop]: 12340 mSDtfsCounter, 31879 mSDsluCounter, 48376 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31879 SdHoareTripleChecker+Valid, 60716 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:59,752 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31879 Valid, 60716 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:58:59,766 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14596 states.
[2023-11-29 05:58:59,845 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14596 to 7978.
[2023-11-29 05:58:59,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:59,862 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:58:59,862 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5092
[2023-11-29 05:58:59,864 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:59,864 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:58:59,865 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 677.4285714285714) internal successors, (4742), 7 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:59,865 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:58:59,973 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5094
[2023-11-29 05:58:59,973 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:59,974 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:59:00,040 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0
[2023-11-29 05:59:00,174 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99
[2023-11-29 05:59:00,174 INFO  L420      AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:00,175 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:00,175 INFO  L85        PathProgramCache]: Analyzing trace with hash -783873968, now seen corresponding path program 1 times
[2023-11-29 05:59:00,175 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:00,175 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697339639]
[2023-11-29 05:59:00,176 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:00,176 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:00,576 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:59:00,576 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592235761]
[2023-11-29 05:59:00,577 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:00,577 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:00,577 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:59:00,578 INFO  L229       MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:59:00,578 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process
[2023-11-29 05:59:05,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:05,964 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22656 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:59:06,021 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:59:06,247 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2023-11-29 05:59:06,247 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:59:06,247 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:59:06,247 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697339639]
[2023-11-29 05:59:06,247 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:59:06,247 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592235761]
[2023-11-29 05:59:06,248 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592235761] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:59:06,248 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:59:06,249 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:59:06,249 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519399641]
[2023-11-29 05:59:06,249 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:59:06,251 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:59:06,251 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:59:06,253 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:59:06,253 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:59:06,254 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.625) internal successors, (4741), 8 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:06,686 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:59:06,686 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:59:06,686 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:59:06,687 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.625) internal successors, (4741), 8 states have internal predecessors, (4741), 0 states have call successors, (0), 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 5093
[2023-11-29 05:59:06,691 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:59:06,703 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:59:06,703 INFO  L226             Difference]: Without dead ends: 14602
[2023-11-29 05:59:06,709 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5101 GetRequests, 5089 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:59:06,709 INFO  L413           NwaCegarLoop]: 12350 mSDtfsCounter, 31875 mSDsluCounter, 59213 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31875 SdHoareTripleChecker+Valid, 71563 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:59:06,709 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31875 Valid, 71563 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:59:06,723 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14602 states.
[2023-11-29 05:59:06,804 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14602 to 7978.
[2023-11-29 05:59:06,811 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:06,820 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:59:06,820 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5093
[2023-11-29 05:59:06,823 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:59:06,823 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:59:06,824 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.625) internal successors, (4741), 8 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:06,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:59:06,930 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5095
[2023-11-29 05:59:06,930 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:59:06,931 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:59:06,996 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0
[2023-11-29 05:59:07,131 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100
[2023-11-29 05:59:07,131 INFO  L420      AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:07,132 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:07,132 INFO  L85        PathProgramCache]: Analyzing trace with hash -378321260, now seen corresponding path program 1 times
[2023-11-29 05:59:07,132 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:07,132 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473608744]
[2023-11-29 05:59:07,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:07,133 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:07,525 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:59:07,526 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321013779]
[2023-11-29 05:59:07,526 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:07,527 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:07,527 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:59:07,527 INFO  L229       MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:59:07,528 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process
[2023-11-29 05:59:12,535 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:12,683 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22660 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:59:12,744 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:59:12,977 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked.
[2023-11-29 05:59:12,977 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:59:12,977 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:59:12,977 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473608744]
[2023-11-29 05:59:12,977 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:59:12,977 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321013779]
[2023-11-29 05:59:12,977 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321013779] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:59:12,977 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:59:12,978 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:59:12,979 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246449886]
[2023-11-29 05:59:12,979 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:59:12,981 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:59:12,981 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:59:12,982 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:59:12,983 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:59:12,983 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.5) internal successors, (4740), 8 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:13,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:59:13,442 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:59:13,442 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:59:13,444 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.5) internal successors, (4740), 8 states have internal predecessors, (4740), 0 states have call successors, (0), 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 5094
[2023-11-29 05:59:13,448 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:59:13,459 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:59:13,459 INFO  L226             Difference]: Without dead ends: 14608
[2023-11-29 05:59:13,464 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5102 GetRequests, 5090 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:59:13,465 INFO  L413           NwaCegarLoop]: 12360 mSDtfsCounter, 31871 mSDsluCounter, 60787 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31871 SdHoareTripleChecker+Valid, 73147 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:59:13,465 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31871 Valid, 73147 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:59:13,479 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14608 states.
[2023-11-29 05:59:13,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14608 to 7978.
[2023-11-29 05:59:13,567 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:13,576 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:59:13,576 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5094
[2023-11-29 05:59:13,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:59:13,579 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:59:13,580 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.5) internal successors, (4740), 8 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:13,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:59:13,685 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5096
[2023-11-29 05:59:13,685 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:59:13,686 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:59:13,752 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0
[2023-11-29 05:59:13,887 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:13,887 INFO  L420      AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:13,887 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:13,888 INFO  L85        PathProgramCache]: Analyzing trace with hash -1841435122, now seen corresponding path program 1 times
[2023-11-29 05:59:13,888 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:13,888 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139466982]
[2023-11-29 05:59:13,888 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:13,889 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:14,279 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:59:14,279 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193839784]
[2023-11-29 05:59:14,280 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:14,280 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:14,281 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:59:14,281 INFO  L229       MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:59:14,282 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process
[2023-11-29 05:59:19,504 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:19,651 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22663 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:59:19,711 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:59:19,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked.
[2023-11-29 05:59:19,952 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:59:19,952 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:59:19,952 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139466982]
[2023-11-29 05:59:19,952 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:59:19,953 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193839784]
[2023-11-29 05:59:19,953 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [193839784] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:59:19,953 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:59:19,954 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:59:19,955 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093670927]
[2023-11-29 05:59:19,955 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:59:19,957 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:59:19,957 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:59:19,959 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:59:19,959 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:59:19,960 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.375) internal successors, (4739), 8 states have internal predecessors, (4739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:20,436 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:59:20,436 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:59:20,436 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:59:20,438 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.375) internal successors, (4739), 8 states have internal predecessors, (4739), 0 states have call successors, (0), 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 5095
[2023-11-29 05:59:20,441 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:59:20,452 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:59:20,452 INFO  L226             Difference]: Without dead ends: 14614
[2023-11-29 05:59:20,457 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5103 GetRequests, 5091 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:59:20,457 INFO  L413           NwaCegarLoop]: 12370 mSDtfsCounter, 31867 mSDsluCounter, 60827 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31867 SdHoareTripleChecker+Valid, 73197 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:59:20,457 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31867 Valid, 73197 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:59:20,471 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14614 states.
[2023-11-29 05:59:20,552 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14614 to 7978.
[2023-11-29 05:59:20,559 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:20,568 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:59:20,568 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5095
[2023-11-29 05:59:20,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:59:20,571 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:59:20,572 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.375) internal successors, (4739), 8 states have internal predecessors, (4739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:20,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:59:20,675 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5097
[2023-11-29 05:59:20,675 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:59:20,676 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:59:20,742 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0
[2023-11-29 05:59:20,876 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102
[2023-11-29 05:59:20,877 INFO  L420      AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:20,877 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:20,877 INFO  L85        PathProgramCache]: Analyzing trace with hash -894739690, now seen corresponding path program 1 times
[2023-11-29 05:59:20,878 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:20,878 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070900620]
[2023-11-29 05:59:20,878 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:20,878 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:21,268 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:59:21,268 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004637885]
[2023-11-29 05:59:21,269 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:21,269 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:21,269 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:59:21,270 INFO  L229       MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:59:21,271 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process
[2023-11-29 05:59:26,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:26,399 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22667 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:59:26,460 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:59:26,707 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked.
[2023-11-29 05:59:26,707 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:59:26,707 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:59:26,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070900620]
[2023-11-29 05:59:26,707 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:59:26,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004637885]
[2023-11-29 05:59:26,707 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004637885] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:59:26,707 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:59:26,708 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:59:26,708 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751912640]
[2023-11-29 05:59:26,708 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:59:26,710 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:59:26,711 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:59:26,712 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:59:26,712 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:59:26,713 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.25) internal successors, (4738), 8 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:27,145 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:59:27,145 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:59:27,145 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:59:27,146 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.25) internal successors, (4738), 8 states have internal predecessors, (4738), 0 states have call successors, (0), 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 5096
[2023-11-29 05:59:27,150 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:59:27,161 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:59:27,162 INFO  L226             Difference]: Without dead ends: 14620
[2023-11-29 05:59:27,167 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5104 GetRequests, 5092 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:59:27,167 INFO  L413           NwaCegarLoop]: 12380 mSDtfsCounter, 31863 mSDsluCounter, 59312 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31863 SdHoareTripleChecker+Valid, 71692 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:59:27,167 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31863 Valid, 71692 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:59:27,182 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14620 states.
[2023-11-29 05:59:27,264 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14620 to 7978.
[2023-11-29 05:59:27,271 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:27,280 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:59:27,280 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5096
[2023-11-29 05:59:27,283 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:59:27,283 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:59:27,284 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.25) internal successors, (4738), 8 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:27,284 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:59:27,393 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5098
[2023-11-29 05:59:27,393 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:59:27,394 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:59:27,462 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0
[2023-11-29 05:59:27,595 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103
[2023-11-29 05:59:27,595 INFO  L420      AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:27,595 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:27,596 INFO  L85        PathProgramCache]: Analyzing trace with hash -1364950580, now seen corresponding path program 1 times
[2023-11-29 05:59:27,596 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:27,596 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865815402]
[2023-11-29 05:59:27,596 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:27,596 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:27,989 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:59:27,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931574026]
[2023-11-29 05:59:27,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:27,991 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:27,991 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:59:27,991 INFO  L229       MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:59:27,992 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process
[2023-11-29 05:59:33,150 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:33,298 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22670 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:59:33,359 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:59:33,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked.
[2023-11-29 05:59:33,592 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:59:33,592 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:59:33,592 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865815402]
[2023-11-29 05:59:33,592 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:59:33,592 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931574026]
[2023-11-29 05:59:33,592 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931574026] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:59:33,592 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:59:33,594 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:59:33,594 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226634835]
[2023-11-29 05:59:33,594 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:59:33,596 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:59:33,596 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:59:33,598 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:59:33,598 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:59:33,599 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.125) internal successors, (4737), 8 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:34,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:59:34,032 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:59:34,032 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:59:34,033 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.125) internal successors, (4737), 8 states have internal predecessors, (4737), 0 states have call successors, (0), 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 5097
[2023-11-29 05:59:34,037 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:59:34,048 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:59:34,048 INFO  L226             Difference]: Without dead ends: 14626
[2023-11-29 05:59:34,053 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5105 GetRequests, 5093 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:59:34,054 INFO  L413           NwaCegarLoop]: 12390 mSDtfsCounter, 31859 mSDsluCounter, 59345 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31859 SdHoareTripleChecker+Valid, 71735 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:59:34,054 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31859 Valid, 71735 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:59:34,068 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14626 states.
[2023-11-29 05:59:34,149 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14626 to 7978.
[2023-11-29 05:59:34,157 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:34,166 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:59:34,166 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5097
[2023-11-29 05:59:34,169 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:59:34,169 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:59:34,170 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.125) internal successors, (4737), 8 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:34,170 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:59:34,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5099
[2023-11-29 05:59:34,276 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:59:34,277 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:59:34,344 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0
[2023-11-29 05:59:34,478 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104
[2023-11-29 05:59:34,478 INFO  L420      AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:34,478 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:34,479 INFO  L85        PathProgramCache]: Analyzing trace with hash -513629800, now seen corresponding path program 1 times
[2023-11-29 05:59:34,479 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:34,479 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667434757]
[2023-11-29 05:59:34,479 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:34,479 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:34,854 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:59:34,854 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929852972]
[2023-11-29 05:59:34,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:34,855 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:34,855 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:59:34,856 INFO  L229       MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:59:34,857 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process
[2023-11-29 05:59:40,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:40,345 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22674 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:59:40,413 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:59:40,645 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked.
[2023-11-29 05:59:40,646 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:59:40,646 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:59:40,646 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667434757]
[2023-11-29 05:59:40,646 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:59:40,646 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929852972]
[2023-11-29 05:59:40,646 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [929852972] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:59:40,646 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:59:40,647 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:59:40,647 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229762975]
[2023-11-29 05:59:40,647 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:59:40,649 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:59:40,649 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:59:40,651 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:59:40,651 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:59:40,653 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.0) internal successors, (4736), 8 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:41,108 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:59:41,108 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:59:41,109 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:59:41,110 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.0) internal successors, (4736), 8 states have internal predecessors, (4736), 0 states have call successors, (0), 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 5098
[2023-11-29 05:59:41,113 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:59:41,124 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:59:41,124 INFO  L226             Difference]: Without dead ends: 14632
[2023-11-29 05:59:41,130 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5106 GetRequests, 5094 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:59:41,130 INFO  L413           NwaCegarLoop]: 12400 mSDtfsCounter, 31855 mSDsluCounter, 60947 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31855 SdHoareTripleChecker+Valid, 73347 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:59:41,130 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31855 Valid, 73347 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:59:41,145 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14632 states.
[2023-11-29 05:59:41,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14632 to 7978.
[2023-11-29 05:59:41,232 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:41,241 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:59:41,241 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5098
[2023-11-29 05:59:41,244 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:59:41,244 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:59:41,245 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.0) internal successors, (4736), 8 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:41,245 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:59:41,352 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5100
[2023-11-29 05:59:41,352 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:59:41,353 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:59:41,419 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0
[2023-11-29 05:59:41,554 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:41,554 INFO  L420      AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:41,554 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:41,555 INFO  L85        PathProgramCache]: Analyzing trace with hash 2100306826, now seen corresponding path program 1 times
[2023-11-29 05:59:41,555 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:41,555 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67338701]
[2023-11-29 05:59:41,555 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:41,556 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:41,946 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:59:41,946 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914502081]
[2023-11-29 05:59:41,947 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:41,947 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:41,947 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:59:41,948 INFO  L229       MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:59:41,949 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process
[2023-11-29 05:59:47,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:47,421 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22677 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 05:59:47,481 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:59:47,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked.
[2023-11-29 05:59:47,719 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:59:47,719 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:59:47,719 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67338701]
[2023-11-29 05:59:47,719 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:59:47,719 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914502081]
[2023-11-29 05:59:47,719 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [914502081] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:59:47,719 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:59:47,721 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 05:59:47,721 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194506926]
[2023-11-29 05:59:47,721 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:59:47,723 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:59:47,723 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:59:47,725 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:59:47,725 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:59:47,726 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 591.875) internal successors, (4735), 8 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:48,159 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:59:48,159 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:59:48,159 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:59:48,161 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 591.875) internal successors, (4735), 8 states have internal predecessors, (4735), 0 states have call successors, (0), 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 5099
[2023-11-29 05:59:48,164 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:59:48,175 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:59:48,175 INFO  L226             Difference]: Without dead ends: 14638
[2023-11-29 05:59:48,181 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5107 GetRequests, 5095 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:59:48,181 INFO  L413           NwaCegarLoop]: 12410 mSDtfsCounter, 31851 mSDsluCounter, 59411 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31851 SdHoareTripleChecker+Valid, 71821 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:59:48,181 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31851 Valid, 71821 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:59:48,195 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14638 states.
[2023-11-29 05:59:48,275 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14638 to 7978.
[2023-11-29 05:59:48,282 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:48,291 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:59:48,291 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5099
[2023-11-29 05:59:48,294 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:59:48,294 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:59:48,295 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 591.875) internal successors, (4735), 8 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:48,295 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:59:48,404 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5101
[2023-11-29 05:59:48,404 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:59:48,405 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:59:48,472 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0
[2023-11-29 05:59:48,605 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:48,606 INFO  L420      AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:48,606 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:48,606 INFO  L85        PathProgramCache]: Analyzing trace with hash 1014479386, now seen corresponding path program 1 times
[2023-11-29 05:59:48,607 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:48,607 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815875872]
[2023-11-29 05:59:48,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:48,607 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:48,998 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:59:48,998 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670831752]
[2023-11-29 05:59:48,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:48,999 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:48,999 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:59:49,000 INFO  L229       MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:59:49,001 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process
[2023-11-29 05:59:54,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:54,223 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22681 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:59:54,283 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:59:54,508 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked.
[2023-11-29 05:59:54,508 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:59:54,508 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:59:54,508 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815875872]
[2023-11-29 05:59:54,509 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:59:54,509 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670831752]
[2023-11-29 05:59:54,509 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [670831752] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:59:54,509 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:59:54,510 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 05:59:54,511 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137543843]
[2023-11-29 05:59:54,511 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:59:54,512 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:59:54,513 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:59:54,514 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:59:54,515 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:59:54,516 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:54,920 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:59:54,920 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 05:59:54,920 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 05:59:54,921 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 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 5100
[2023-11-29 05:59:54,925 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:59:54,936 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 05:59:54,936 INFO  L226             Difference]: Without dead ends: 14647
[2023-11-29 05:59:54,942 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5108 GetRequests, 5097 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 05:59:54,942 INFO  L413           NwaCegarLoop]: 12425 mSDtfsCounter, 31848 mSDsluCounter, 48631 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31848 SdHoareTripleChecker+Valid, 61056 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:59:54,942 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31848 Valid, 61056 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:59:54,956 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14647 states.
[2023-11-29 05:59:55,037 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14647 to 7978.
[2023-11-29 05:59:55,044 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:55,053 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 05:59:55,053 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5100
[2023-11-29 05:59:55,056 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:59:55,056 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 05:59:55,057 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:55,057 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 05:59:55,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5102
[2023-11-29 05:59:55,160 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:59:55,161 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:59:55,227 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0
[2023-11-29 05:59:55,361 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107
[2023-11-29 05:59:55,362 INFO  L420      AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:55,362 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:55,363 INFO  L85        PathProgramCache]: Analyzing trace with hash -1260616658, now seen corresponding path program 1 times
[2023-11-29 05:59:55,363 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:55,363 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666601276]
[2023-11-29 05:59:55,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:55,363 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:55,760 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:59:55,760 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882136547]
[2023-11-29 05:59:55,761 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:55,761 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:55,761 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:59:55,762 INFO  L229       MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:59:55,763 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process
[2023-11-29 06:00:01,031 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:00:01,178 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22684 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:00:01,241 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:00:01,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked.
[2023-11-29 06:00:01,481 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:00:01,481 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:00:01,481 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666601276]
[2023-11-29 06:00:01,481 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:00:01,481 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882136547]
[2023-11-29 06:00:01,481 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882136547] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:00:01,481 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:00:01,482 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:00:01,483 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324047828]
[2023-11-29 06:00:01,483 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:00:01,485 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:00:01,485 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:00:01,486 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:00:01,487 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:00:01,488 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 591.5) internal successors, (4732), 8 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states 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 06:00:01,934 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:00:01,934 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 06:00:01,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:00:01,936 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 591.5) internal successors, (4732), 8 states have internal predecessors, (4732), 0 states have call successors, (0), 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 5101
[2023-11-29 06:00:01,939 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:00:01,950 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 06:00:01,950 INFO  L226             Difference]: Without dead ends: 14653
[2023-11-29 06:00:01,955 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5109 GetRequests, 5097 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:00:01,956 INFO  L413           NwaCegarLoop]: 12435 mSDtfsCounter, 31844 mSDsluCounter, 59495 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31844 SdHoareTripleChecker+Valid, 71930 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:00:01,956 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31844 Valid, 71930 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:00:01,970 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14653 states.
[2023-11-29 06:00:02,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14653 to 7978.
[2023-11-29 06:00:02,057 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states 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 06:00:02,066 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 06:00:02,067 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5101
[2023-11-29 06:00:02,069 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:00:02,069 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 06:00:02,070 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 591.5) internal successors, (4732), 8 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states 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 06:00:02,070 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 06:00:02,179 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5103
[2023-11-29 06:00:02,179 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:00:02,180 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:00:02,247 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0
[2023-11-29 06:00:02,380 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:02,381 INFO  L420      AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:00:02,381 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:00:02,382 INFO  L85        PathProgramCache]: Analyzing trace with hash 1060694942, now seen corresponding path program 1 times
[2023-11-29 06:00:02,382 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:00:02,382 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299131915]
[2023-11-29 06:00:02,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:02,382 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:00:02,776 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:00:02,776 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765019865]
[2023-11-29 06:00:02,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:02,777 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:02,777 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:00:02,778 INFO  L229       MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:00:02,779 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process
[2023-11-29 06:00:07,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:00:08,046 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22687 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:00:08,107 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:00:08,343 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked.
[2023-11-29 06:00:08,344 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:00:08,344 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:00:08,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299131915]
[2023-11-29 06:00:08,344 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:00:08,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765019865]
[2023-11-29 06:00:08,344 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765019865] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:00:08,344 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:00:08,346 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:00:08,346 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008178438]
[2023-11-29 06:00:08,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:00:08,348 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:00:08,348 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:00:08,350 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:00:08,351 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:00:08,352 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 675.8571428571429) internal successors, (4731), 7 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states 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 06:00:08,759 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:00:08,759 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 06:00:08,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:00:08,761 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.8571428571429) internal successors, (4731), 7 states have internal predecessors, (4731), 0 states have call successors, (0), 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 5102
[2023-11-29 06:00:08,766 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:00:08,780 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 06:00:08,780 INFO  L226             Difference]: Without dead ends: 14659
[2023-11-29 06:00:08,787 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5110 GetRequests, 5099 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 06:00:08,787 INFO  L413           NwaCegarLoop]: 12445 mSDtfsCounter, 31840 mSDsluCounter, 48691 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31840 SdHoareTripleChecker+Valid, 61136 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:00:08,787 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31840 Valid, 61136 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:00:08,804 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14659 states.
[2023-11-29 06:00:08,883 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14659 to 7978.
[2023-11-29 06:00:08,890 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states 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 06:00:08,899 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 06:00:08,900 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5102
[2023-11-29 06:00:08,902 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:00:08,902 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 06:00:08,903 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.8571428571429) internal successors, (4731), 7 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states 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 06:00:08,903 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 06:00:09,175 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5104
[2023-11-29 06:00:09,175 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:00:09,176 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1]
[2023-11-29 06:00:09,241 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0
[2023-11-29 06:00:09,376 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:09,377 INFO  L420      AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:00:09,377 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:00:09,377 INFO  L85        PathProgramCache]: Analyzing trace with hash -446640018, now seen corresponding path program 1 times
[2023-11-29 06:00:09,377 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:00:09,378 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214527460]
[2023-11-29 06:00:09,378 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:09,378 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:00:09,769 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:00:09,769 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018856284]
[2023-11-29 06:00:09,770 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:09,770 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:09,770 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:00:09,771 INFO  L229       MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:00:09,772 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process
[2023-11-29 06:00:14,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:00:14,882 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22690 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:00:14,943 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:00:15,189 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked.
[2023-11-29 06:00:15,189 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:00:15,190 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:00:15,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214527460]
[2023-11-29 06:00:15,190 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:00:15,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018856284]
[2023-11-29 06:00:15,190 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018856284] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:00:15,190 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:00:15,192 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:00:15,192 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842786309]
[2023-11-29 06:00:15,192 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:00:15,195 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:00:15,195 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:00:15,197 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:00:15,197 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:00:15,199 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 591.25) internal successors, (4730), 8 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states 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 06:00:15,669 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:00:15,669 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 06:00:15,670 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:00:15,671 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 591.25) internal successors, (4730), 8 states have internal predecessors, (4730), 0 states have call successors, (0), 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 5103
[2023-11-29 06:00:15,675 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:00:15,686 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 06:00:15,686 INFO  L226             Difference]: Without dead ends: 14665
[2023-11-29 06:00:15,692 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5111 GetRequests, 5099 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:00:15,692 INFO  L413           NwaCegarLoop]: 12455 mSDtfsCounter, 31836 mSDsluCounter, 61167 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31836 SdHoareTripleChecker+Valid, 73622 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:00:15,692 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31836 Valid, 73622 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:00:15,706 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14665 states.
[2023-11-29 06:00:15,785 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14665 to 7978.
[2023-11-29 06:00:15,792 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states 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 06:00:15,801 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 06:00:15,801 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5103
[2023-11-29 06:00:15,804 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:00:15,804 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 06:00:15,805 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 591.25) internal successors, (4730), 8 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states 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 06:00:15,805 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 06:00:16,092 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5105
[2023-11-29 06:00:16,092 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:00:16,093 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1]
[2023-11-29 06:00:16,158 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0
[2023-11-29 06:00:16,293 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:16,294 INFO  L420      AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:00:16,294 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:00:16,295 INFO  L85        PathProgramCache]: Analyzing trace with hash 1143450018, now seen corresponding path program 1 times
[2023-11-29 06:00:16,295 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:00:16,295 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273554256]
[2023-11-29 06:00:16,295 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:16,295 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:00:16,687 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:00:16,687 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159887252]
[2023-11-29 06:00:16,688 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:16,688 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:16,688 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:00:16,689 INFO  L229       MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:00:16,690 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process
[2023-11-29 06:00:21,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:00:22,031 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22693 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:00:22,091 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:00:22,314 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked.
[2023-11-29 06:00:22,314 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:00:22,314 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:00:22,315 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273554256]
[2023-11-29 06:00:22,315 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:00:22,315 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159887252]
[2023-11-29 06:00:22,315 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [159887252] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:00:22,315 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:00:22,317 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:00:22,317 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618922238]
[2023-11-29 06:00:22,317 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:00:22,319 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:00:22,320 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:00:22,322 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:00:22,322 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:00:22,323 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 675.5714285714286) internal successors, (4729), 7 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states 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 06:00:22,730 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:00:22,731 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 06:00:22,731 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:00:22,732 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.5714285714286) internal successors, (4729), 7 states have internal predecessors, (4729), 0 states have call successors, (0), 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 5104
[2023-11-29 06:00:22,736 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:00:22,747 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 06:00:22,747 INFO  L226             Difference]: Without dead ends: 14671
[2023-11-29 06:00:22,752 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5112 GetRequests, 5101 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 06:00:22,753 INFO  L413           NwaCegarLoop]: 12465 mSDtfsCounter, 31832 mSDsluCounter, 48751 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31832 SdHoareTripleChecker+Valid, 61216 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:00:22,753 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31832 Valid, 61216 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:00:22,767 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14671 states.
[2023-11-29 06:00:22,850 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14671 to 7978.
[2023-11-29 06:00:22,857 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states 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 06:00:22,867 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 06:00:22,867 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5104
[2023-11-29 06:00:22,869 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:00:22,869 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 06:00:22,871 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.5714285714286) internal successors, (4729), 7 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states 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 06:00:22,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 06:00:22,978 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5106
[2023-11-29 06:00:22,979 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:00:22,980 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1]
[2023-11-29 06:00:23,045 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0
[2023-11-29 06:00:23,180 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111
[2023-11-29 06:00:23,180 INFO  L420      AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:00:23,181 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:00:23,181 INFO  L85        PathProgramCache]: Analyzing trace with hash -1192745682, now seen corresponding path program 1 times
[2023-11-29 06:00:23,181 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:00:23,181 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297612967]
[2023-11-29 06:00:23,182 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:23,182 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:00:23,580 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:00:23,580 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892934171]
[2023-11-29 06:00:23,581 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:23,581 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:23,582 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:00:23,582 INFO  L229       MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:00:23,583 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process
[2023-11-29 06:00:28,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:00:28,915 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22696 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:00:28,978 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:00:29,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked.
[2023-11-29 06:00:29,219 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:00:29,219 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:00:29,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297612967]
[2023-11-29 06:00:29,219 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:00:29,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892934171]
[2023-11-29 06:00:29,219 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892934171] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:00:29,219 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:00:29,220 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:00:29,221 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180396320]
[2023-11-29 06:00:29,221 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:00:29,223 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:00:29,223 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:00:29,225 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:00:29,225 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:00:29,226 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 591.0) internal successors, (4728), 8 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states 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 06:00:29,693 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:00:29,693 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 06:00:29,693 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:00:29,694 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 591.0) internal successors, (4728), 8 states have internal predecessors, (4728), 0 states have call successors, (0), 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 5105
[2023-11-29 06:00:29,698 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:00:29,710 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 06:00:29,710 INFO  L226             Difference]: Without dead ends: 14677
[2023-11-29 06:00:29,716 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5113 GetRequests, 5101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:00:29,716 INFO  L413           NwaCegarLoop]: 12475 mSDtfsCounter, 31828 mSDsluCounter, 61247 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31828 SdHoareTripleChecker+Valid, 73722 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:00:29,717 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31828 Valid, 73722 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:00:29,731 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14677 states.
[2023-11-29 06:00:29,813 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14677 to 7978.
[2023-11-29 06:00:29,820 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states 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 06:00:29,829 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 06:00:29,829 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5105
[2023-11-29 06:00:29,832 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:00:29,832 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 06:00:29,833 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 591.0) internal successors, (4728), 8 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states 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 06:00:29,833 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 06:00:30,077 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5107
[2023-11-29 06:00:30,077 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:00:30,078 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:30,145 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0
[2023-11-29 06:00:30,278 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112
[2023-11-29 06:00:30,279 INFO  L420      AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:00:30,279 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:00:30,280 INFO  L85        PathProgramCache]: Analyzing trace with hash -1639861210, now seen corresponding path program 1 times
[2023-11-29 06:00:30,280 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:00:30,280 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80002101]
[2023-11-29 06:00:30,281 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:30,281 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:00:30,675 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:00:30,676 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229048536]
[2023-11-29 06:00:30,676 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:30,677 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:30,677 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:00:30,678 INFO  L229       MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:00:30,678 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process
[2023-11-29 06:00:35,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:00:35,847 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22699 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:00:35,908 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:00:36,133 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked.
[2023-11-29 06:00:36,133 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:00:36,134 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:00:36,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80002101]
[2023-11-29 06:00:36,134 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:00:36,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229048536]
[2023-11-29 06:00:36,134 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [229048536] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:00:36,134 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:00:36,136 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:00:36,136 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098556247]
[2023-11-29 06:00:36,136 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:00:36,138 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:00:36,138 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:00:36,140 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:00:36,140 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:00:36,141 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 675.2857142857143) internal successors, (4727), 7 states have internal predecessors, (4727), 0 states have call successors, (0), 0 states 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 06:00:36,541 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:00:36,541 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-11-29 06:00:36,541 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:00:36,542 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.2857142857143) internal successors, (4727), 7 states have internal predecessors, (4727), 0 states have call successors, (0), 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 5106
[2023-11-29 06:00:36,546 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:00:36,556 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 06:00:36,556 INFO  L226             Difference]: Without dead ends: 14683
[2023-11-29 06:00:36,562 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5114 GetRequests, 5103 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 06:00:36,562 INFO  L413           NwaCegarLoop]: 12485 mSDtfsCounter, 31824 mSDsluCounter, 48811 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31824 SdHoareTripleChecker+Valid, 61296 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:00:36,562 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31824 Valid, 61296 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:00:36,575 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14683 states.
[2023-11-29 06:00:36,657 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14683 to 7978.
[2023-11-29 06:00:36,664 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states 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 06:00:36,673 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-11-29 06:00:36,673 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5106
[2023-11-29 06:00:36,676 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:00:36,676 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-11-29 06:00:36,677 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.2857142857143) internal successors, (4727), 7 states have internal predecessors, (4727), 0 states have call successors, (0), 0 states 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 06:00:36,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-11-29 06:00:36,785 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5108
[2023-11-29 06:00:36,785 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:00:36,786 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:00:36,853 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0
[2023-11-29 06:00:36,986 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113
[2023-11-29 06:00:36,986 INFO  L420      AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:00:36,987 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:00:36,988 INFO  L85        PathProgramCache]: Analyzing trace with hash 1497301614, now seen corresponding path program 1 times
[2023-11-29 06:00:36,988 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:00:36,988 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23273200]
[2023-11-29 06:00:36,989 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:36,989 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:00:37,380 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:00:37,380 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139735483]
[2023-11-29 06:00:37,381 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:37,381 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:37,382 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:00:37,382 INFO  L229       MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:00:37,383 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2347cb-34f9-4f5b-bf92-8f9e731f62d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process