./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.3.prop1-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/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_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/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_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/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 cb2be29288069f959714582976e6e726143ed8a49d92a385b2a29e30a155b919
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 05:47:49,634 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 05:47:49,699 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 05:47:49,704 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 05:47:49,704 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 05:47:49,728 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 05:47:49,729 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 05:47:49,729 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 05:47:49,730 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 05:47:49,731 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 05:47:49,731 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 05:47:49,732 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 05:47:49,732 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 05:47:49,733 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 05:47:49,733 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 05:47:49,734 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 05:47:49,734 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 05:47:49,735 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 05:47:49,735 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 05:47:49,736 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 05:47:49,736 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 05:47:49,737 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 05:47:49,737 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 05:47:49,738 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 05:47:49,738 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 05:47:49,739 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 05:47:49,739 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 05:47:49,740 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 05:47:49,740 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:47:49,741 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 05:47:49,741 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 05:47:49,742 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 05:47:49,742 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 05:47:49,742 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 05:47:49,743 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 05:47:49,743 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 05:47:49,743 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 05:47:49,743 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 05:47:49,743 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 05:47:49,744 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_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/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_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/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 -> cb2be29288069f959714582976e6e726143ed8a49d92a385b2a29e30a155b919
[2023-11-29 05:47:49,974 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 05:47:49,994 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 05:47:49,997 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 05:47:49,998 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 05:47:49,998 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 05:47:49,999 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.3.prop1-func-interl.c
[2023-11-29 05:47:52,745 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 05:47:53,422 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 05:47:53,423 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.3.prop1-func-interl.c
[2023-11-29 05:47:53,502 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/data/369fd93bf/bb068db670874d5a948efa8c703b07f4/FLAG359425622
[2023-11-29 05:47:53,514 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/data/369fd93bf/bb068db670874d5a948efa8c703b07f4
[2023-11-29 05:47:53,517 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 05:47:53,518 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 05:47:53,520 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 05:47:53,520 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 05:47:53,526 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 05:47:53,526 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:47:53" (1/1) ...
[2023-11-29 05:47:53,528 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590d78d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:53, skipping insertion in model container
[2023-11-29 05:47:53,528 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:47:53" (1/1) ...
[2023-11-29 05:47:53,904 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 05:47:54,357 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_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.3.prop1-func-interl.c[1175,1188]
[2023-11-29 05:47:56,681 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:47:56,690 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 05:47:56,711 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_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.3.prop1-func-interl.c[1175,1188]
[2023-11-29 05:47:58,634 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:47:58,655 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 05:47:58,655 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58 WrapperNode
[2023-11-29 05:47:58,656 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 05:47:58,657 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 05:47:58,657 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 05:47:58,657 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 05:47:58,665 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:47:59,012 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:03,260 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81018
[2023-11-29 05:48:03,261 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 05:48:03,261 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 05:48:03,261 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 05:48:03,261 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 05:48:03,270 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:03,270 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:04,296 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:05,123 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 05:48:05,123 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:05,123 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:06,108 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:06,544 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:06,761 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:06,924 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:07,724 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 05:48:07,724 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 05:48:07,724 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 05:48:07,724 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 05:48:07,725 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (1/1) ...
[2023-11-29 05:48:07,729 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:48:07,737 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:48:07,749 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 05:48:07,751 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 05:48:07,782 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 05:48:07,782 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 05:48:07,782 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 05:48:07,783 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 05:48:11,394 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 05:48:11,396 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 05:48:44,317 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 05:48:45,779 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 05:48:45,779 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 05:48:45,784 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:48:45 BoogieIcfgContainer
[2023-11-29 05:48:45,784 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 05:48:45,787 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 05:48:45,787 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 05:48:45,790 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 05:48:45,790 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:47:53" (1/3) ...
[2023-11-29 05:48:45,791 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c375908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:48:45, skipping insertion in model container
[2023-11-29 05:48:45,791 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:58" (2/3) ...
[2023-11-29 05:48:45,791 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c375908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:48:45, skipping insertion in model container
[2023-11-29 05:48:45,792 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:48:45" (3/3) ...
[2023-11-29 05:48:45,793 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.rushhour.3.prop1-func-interl.c
[2023-11-29 05:48:45,806 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 05:48:45,806 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 05:48:45,996 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 05:48:46,001 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;@671baceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 05:48:46,002 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 05:48:46,036 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 13929 states, 13927 states have (on average 1.669778128814533) internal successors, (23255), 13928 states have internal predecessors, (23255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:46,054 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 269
[2023-11-29 05:48:46,054 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:46,055 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]
[2023-11-29 05:48:46,056 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:46,060 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:46,060 INFO  L85        PathProgramCache]: Analyzing trace with hash 1104885859, now seen corresponding path program 1 times
[2023-11-29 05:48:46,067 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:46,068 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509547681]
[2023-11-29 05:48:46,068 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:46,068 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:46,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:48,146 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 05:48:48,147 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:48,147 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509547681]
[2023-11-29 05:48:48,147 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509547681] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:48,148 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:48,148 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:48:48,149 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972159512]
[2023-11-29 05:48:48,150 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:48,155 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:48:48,155 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:48,183 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:48:48,184 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:48:48,216 INFO  L87              Difference]: Start difference. First operand  has 13929 states, 13927 states have (on average 1.669778128814533) internal successors, (23255), 13928 states have internal predecessors, (23255), 0 states have call successors, (0), 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 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:48,873 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:48,874 INFO  L93              Difference]: Finished difference Result 27548 states and 45996 transitions.
[2023-11-29 05:48:48,875 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:48:48,876 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 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 268
[2023-11-29 05:48:48,878 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:48,953 INFO  L225             Difference]: With dead ends: 27548
[2023-11-29 05:48:48,953 INFO  L226             Difference]: Without dead ends: 13929
[2023-11-29 05:48:48,972 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 05:48:48,976 INFO  L413           NwaCegarLoop]: 23248 mSDtfsCounter, 1 mSDsluCounter, 46491 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69739 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:48,977 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69739 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 05:48:49,019 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13929 states.
[2023-11-29 05:48:49,271 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13929 to 13929.
[2023-11-29 05:48:49,299 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13929 states, 13928 states have (on average 1.6695146467547386) internal successors, (23253), 13928 states have internal predecessors, (23253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:49,336 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13929 states to 13929 states and 23253 transitions.
[2023-11-29 05:48:49,337 INFO  L78                 Accepts]: Start accepts. Automaton has 13929 states and 23253 transitions. Word has length 268
[2023-11-29 05:48:49,338 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:49,338 INFO  L495      AbstractCegarLoop]: Abstraction has 13929 states and 23253 transitions.
[2023-11-29 05:48:49,338 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:49,339 INFO  L276                IsEmpty]: Start isEmpty. Operand 13929 states and 23253 transitions.
[2023-11-29 05:48:49,344 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 270
[2023-11-29 05:48:49,344 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:49,345 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]
[2023-11-29 05:48:49,345 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 05:48:49,345 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:49,346 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:49,346 INFO  L85        PathProgramCache]: Analyzing trace with hash -106550207, now seen corresponding path program 1 times
[2023-11-29 05:48:49,346 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:49,347 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723122419]
[2023-11-29 05:48:49,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:49,347 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:49,832 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:50,201 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 05:48:50,201 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:50,202 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723122419]
[2023-11-29 05:48:50,202 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723122419] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:50,202 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:50,202 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:48:50,203 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457478184]
[2023-11-29 05:48:50,203 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:50,205 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:48:50,205 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:50,206 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:48:50,206 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:48:50,207 INFO  L87              Difference]: Start difference. First operand 13929 states and 23253 transitions. Second operand  has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:50,700 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:50,700 INFO  L93              Difference]: Finished difference Result 27551 states and 45994 transitions.
[2023-11-29 05:48:50,701 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:48:50,701 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 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 269
[2023-11-29 05:48:50,702 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:50,761 INFO  L225             Difference]: With dead ends: 27551
[2023-11-29 05:48:50,762 INFO  L226             Difference]: Without dead ends: 13932
[2023-11-29 05:48:50,772 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 05:48:50,773 INFO  L413           NwaCegarLoop]: 23248 mSDtfsCounter, 1 mSDsluCounter, 46489 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69737 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:50,774 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69737 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 05:48:50,796 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13932 states.
[2023-11-29 05:48:50,960 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13932 to 13931.
[2023-11-29 05:48:50,980 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13931 states, 13930 states have (on average 1.6694185211773152) internal successors, (23255), 13930 states have internal predecessors, (23255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:51,112 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13931 states to 13931 states and 23255 transitions.
[2023-11-29 05:48:51,112 INFO  L78                 Accepts]: Start accepts. Automaton has 13931 states and 23255 transitions. Word has length 269
[2023-11-29 05:48:51,113 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:51,113 INFO  L495      AbstractCegarLoop]: Abstraction has 13931 states and 23255 transitions.
[2023-11-29 05:48:51,114 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:51,114 INFO  L276                IsEmpty]: Start isEmpty. Operand 13931 states and 23255 transitions.
[2023-11-29 05:48:51,118 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 271
[2023-11-29 05:48:51,119 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:51,119 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]
[2023-11-29 05:48:51,119 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 05:48:51,119 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:51,120 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:51,120 INFO  L85        PathProgramCache]: Analyzing trace with hash 781479997, now seen corresponding path program 1 times
[2023-11-29 05:48:51,120 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:51,121 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875050605]
[2023-11-29 05:48:51,121 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:51,121 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:51,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:51,762 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 05:48:51,762 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:51,763 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875050605]
[2023-11-29 05:48:51,763 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875050605] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:51,763 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:51,764 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:48:51,764 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104510572]
[2023-11-29 05:48:51,764 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:51,765 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:48:51,765 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:51,766 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:48:51,766 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:48:51,767 INFO  L87              Difference]: Start difference. First operand 13931 states and 23255 transitions. Second operand  has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:52,485 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:52,485 INFO  L93              Difference]: Finished difference Result 41163 states and 68718 transitions.
[2023-11-29 05:48:52,485 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:48:52,486 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 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 270
[2023-11-29 05:48:52,487 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:52,532 INFO  L225             Difference]: With dead ends: 41163
[2023-11-29 05:48:52,532 INFO  L226             Difference]: Without dead ends: 27542
[2023-11-29 05:48:52,549 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 05:48:52,550 INFO  L413           NwaCegarLoop]: 23379 mSDtfsCounter, 22721 mSDsluCounter, 46616 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22721 SdHoareTripleChecker+Valid, 69995 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:52,551 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22721 Valid, 69995 Invalid, 20 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 05:48:52,584 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27542 states.
[2023-11-29 05:48:52,830 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27542 to 13933.
[2023-11-29 05:48:52,850 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13933 states, 13932 states have (on average 1.669322423198392) internal successors, (23257), 13932 states have internal predecessors, (23257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:52,878 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13933 states to 13933 states and 23257 transitions.
[2023-11-29 05:48:52,878 INFO  L78                 Accepts]: Start accepts. Automaton has 13933 states and 23257 transitions. Word has length 270
[2023-11-29 05:48:52,878 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:52,879 INFO  L495      AbstractCegarLoop]: Abstraction has 13933 states and 23257 transitions.
[2023-11-29 05:48:52,879 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:52,879 INFO  L276                IsEmpty]: Start isEmpty. Operand 13933 states and 23257 transitions.
[2023-11-29 05:48:52,883 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2023-11-29 05:48:52,883 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:52,883 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]
[2023-11-29 05:48:52,884 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 05:48:52,884 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:52,884 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:52,885 INFO  L85        PathProgramCache]: Analyzing trace with hash -337042523, now seen corresponding path program 1 times
[2023-11-29 05:48:52,885 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:52,885 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384376295]
[2023-11-29 05:48:52,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:52,886 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:53,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:48:54,017 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 05:48:54,017 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:48:54,017 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384376295]
[2023-11-29 05:48:54,017 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384376295] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:48:54,017 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:48:54,018 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 05:48:54,018 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048406792]
[2023-11-29 05:48:54,018 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:48:54,018 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:48:54,019 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:48:54,019 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:48:54,019 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:48:54,020 INFO  L87              Difference]: Start difference. First operand 13933 states and 23257 transitions. Second operand  has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:54,944 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:48:54,944 INFO  L93              Difference]: Finished difference Result 41250 states and 68859 transitions.
[2023-11-29 05:48:54,944 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:48:54,945 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 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 271
[2023-11-29 05:48:54,945 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:48:54,999 INFO  L225             Difference]: With dead ends: 41250
[2023-11-29 05:48:54,999 INFO  L226             Difference]: Without dead ends: 27627
[2023-11-29 05:48:55,019 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:48:55,020 INFO  L413           NwaCegarLoop]: 23374 mSDtfsCounter, 91301 mSDsluCounter, 69853 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91301 SdHoareTripleChecker+Valid, 93227 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:48:55,021 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [91301 Valid, 93227 Invalid, 42 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-29 05:48:55,055 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27627 states.
[2023-11-29 05:48:55,393 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27627 to 14014.
[2023-11-29 05:48:55,411 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6693070720045673) internal successors, (23392), 14013 states have internal predecessors, (23392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:55,438 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23392 transitions.
[2023-11-29 05:48:55,438 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23392 transitions. Word has length 271
[2023-11-29 05:48:55,439 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:48:55,439 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23392 transitions.
[2023-11-29 05:48:55,439 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:48:55,439 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23392 transitions.
[2023-11-29 05:48:55,977 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9263
[2023-11-29 05:48:55,977 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:48:55,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:48:55,983 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 05:48:55,984 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:48:55,984 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:48:55,988 INFO  L85        PathProgramCache]: Analyzing trace with hash -1203780407, now seen corresponding path program 1 times
[2023-11-29 05:48:55,988 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:48:55,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445669871]
[2023-11-29 05:48:55,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:55,991 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:48:57,413 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:48:57,413 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628960795]
[2023-11-29 05:48:57,415 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:48:57,415 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:48:57,415 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:48:57,419 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:48:57,427 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 05:49:32,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:49:33,436 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83123 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:49:33,863 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:49:35,406 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:49:35,406 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:49:35,407 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:49:35,407 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445669871]
[2023-11-29 05:49:35,407 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:49:35,407 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628960795]
[2023-11-29 05:49:35,408 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628960795] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:49:35,408 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:49:35,411 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:49:35,411 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083596056]
[2023-11-29 05:49:35,411 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:49:35,424 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:49:35,424 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:49:35,435 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:49:35,435 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:49:35,440 INFO  L87              Difference]: Start difference. First operand 14014 states and 23392 transitions. Second operand  has 4 states, 4 states have (on average 2315.5) internal successors, (9262), 3 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:46,314 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:49:46,314 INFO  L93              Difference]: Finished difference Result 27720 states and 46268 transitions.
[2023-11-29 05:49:46,314 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:49:46,316 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2315.5) internal successors, (9262), 3 states have internal predecessors, (9262), 0 states have call successors, (0), 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 9262
[2023-11-29 05:49:46,317 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:49:46,342 INFO  L225             Difference]: With dead ends: 27720
[2023-11-29 05:49:46,342 INFO  L226             Difference]: Without dead ends: 14097
[2023-11-29 05:49:46,353 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9262 GetRequests, 9259 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:49:46,354 INFO  L413           NwaCegarLoop]: 16354 mSDtfsCounter, 45668 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 7346 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45668 SdHoareTripleChecker+Valid, 16959 SdHoareTripleChecker+Invalid, 7346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time
[2023-11-29 05:49:46,355 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45668 Valid, 16959 Invalid, 7346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7346 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time]
[2023-11-29 05:49:46,377 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14097 states.
[2023-11-29 05:49:46,556 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14097 to 14014.
[2023-11-29 05:49:46,571 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6692357096981374) internal successors, (23391), 14013 states have internal predecessors, (23391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:46,597 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23391 transitions.
[2023-11-29 05:49:46,598 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23391 transitions. Word has length 9262
[2023-11-29 05:49:46,600 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:49:46,601 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23391 transitions.
[2023-11-29 05:49:46,603 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2315.5) internal successors, (9262), 3 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:49:46,603 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23391 transitions.
[2023-11-29 05:49:47,127 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9264
[2023-11-29 05:49:47,127 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:49:47,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:49:47,337 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process
[2023-11-29 05:49:47,391 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 137
[2023-11-29 05:49:47,391 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:47,392 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:49:47,393 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:49:47,399 INFO  L85        PathProgramCache]: Analyzing trace with hash 268504931, now seen corresponding path program 1 times
[2023-11-29 05:49:47,400 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:49:47,400 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932171089]
[2023-11-29 05:49:47,402 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:47,402 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:49:49,023 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:49:49,023 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239246868]
[2023-11-29 05:49:49,026 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:49:49,026 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:49:49,026 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:49,027 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:49:49,030 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 05:50:23,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:24,378 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83124 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:50:24,577 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:50:26,024 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:50:26,024 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:50:26,025 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:26,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932171089]
[2023-11-29 05:50:26,025 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:50:26,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239246868]
[2023-11-29 05:50:26,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [239246868] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:26,025 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:26,029 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:50:26,029 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831480778]
[2023-11-29 05:50:26,029 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:26,039 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:50:26,039 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:26,050 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:50:26,050 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:50:26,053 INFO  L87              Difference]: Start difference. First operand 14014 states and 23391 transitions. Second operand  has 4 states, 4 states have (on average 2315.75) internal successors, (9263), 3 states have internal predecessors, (9263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:36,041 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:36,041 INFO  L93              Difference]: Finished difference Result 27786 states and 46376 transitions.
[2023-11-29 05:50:36,041 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:50:36,043 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2315.75) internal successors, (9263), 3 states have internal predecessors, (9263), 0 states have call successors, (0), 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 9263
[2023-11-29 05:50:36,044 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:36,058 INFO  L225             Difference]: With dead ends: 27786
[2023-11-29 05:50:36,059 INFO  L226             Difference]: Without dead ends: 14163
[2023-11-29 05:50:36,063 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9263 GetRequests, 9260 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:50:36,064 INFO  L413           NwaCegarLoop]: 16452 mSDtfsCounter, 45623 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 7368 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45623 SdHoareTripleChecker+Valid, 17156 SdHoareTripleChecker+Invalid, 7368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:50:36,065 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45623 Valid, 17156 Invalid, 7368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7368 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time]
[2023-11-29 05:50:36,082 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14163 states.
[2023-11-29 05:50:36,201 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14163 to 14014.
[2023-11-29 05:50:36,214 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6691643473917077) internal successors, (23390), 14013 states have internal predecessors, (23390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:36,230 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23390 transitions.
[2023-11-29 05:50:36,230 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23390 transitions. Word has length 9263
[2023-11-29 05:50:36,232 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:36,232 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23390 transitions.
[2023-11-29 05:50:36,234 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2315.75) internal successors, (9263), 3 states have internal predecessors, (9263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:36,234 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23390 transitions.
[2023-11-29 05:50:36,652 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9265
[2023-11-29 05:50:36,652 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:36,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:50:36,857 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forcibly destroying the process
[2023-11-29 05:50:36,896 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 137
[2023-11-29 05:50:36,896 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-29 05:50:36,896 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:36,897 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:36,902 INFO  L85        PathProgramCache]: Analyzing trace with hash 85466300, now seen corresponding path program 1 times
[2023-11-29 05:50:36,902 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:36,903 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041112743]
[2023-11-29 05:50:36,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:36,905 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:38,152 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:50:38,152 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789485590]
[2023-11-29 05:50:38,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:38,155 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:50:38,155 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:50:38,156 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:50:38,160 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 05:51:11,190 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:11,747 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83125 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:51:11,947 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:51:13,142 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:51:13,142 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:51:13,142 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:13,142 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041112743]
[2023-11-29 05:51:13,142 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:51:13,142 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789485590]
[2023-11-29 05:51:13,142 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789485590] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:13,142 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:13,145 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:51:13,145 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324438594]
[2023-11-29 05:51:13,145 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:13,152 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:51:13,152 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:13,158 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:51:13,158 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:51:13,160 INFO  L87              Difference]: Start difference. First operand 14014 states and 23390 transitions. Second operand  has 4 states, 4 states have (on average 2316.0) internal successors, (9264), 3 states have internal predecessors, (9264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:23,594 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:51:23,595 INFO  L93              Difference]: Finished difference Result 27852 states and 46484 transitions.
[2023-11-29 05:51:23,595 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:51:23,597 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2316.0) internal successors, (9264), 3 states have internal predecessors, (9264), 0 states have call successors, (0), 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 9264
[2023-11-29 05:51:23,597 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:51:23,609 INFO  L225             Difference]: With dead ends: 27852
[2023-11-29 05:51:23,609 INFO  L226             Difference]: Without dead ends: 14229
[2023-11-29 05:51:23,613 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9264 GetRequests, 9261 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:51:23,614 INFO  L413           NwaCegarLoop]: 16550 mSDtfsCounter, 45578 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 7390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45578 SdHoareTripleChecker+Valid, 17353 SdHoareTripleChecker+Invalid, 7390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:51:23,614 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45578 Valid, 17353 Invalid, 7390 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7390 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time]
[2023-11-29 05:51:23,630 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14229 states.
[2023-11-29 05:51:23,725 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14229 to 14014.
[2023-11-29 05:51:23,738 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.669092985085278) internal successors, (23389), 14013 states have internal predecessors, (23389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:23,753 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23389 transitions.
[2023-11-29 05:51:23,754 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23389 transitions. Word has length 9264
[2023-11-29 05:51:23,755 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:51:23,755 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23389 transitions.
[2023-11-29 05:51:23,757 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2316.0) internal successors, (9264), 3 states have internal predecessors, (9264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:51:23,757 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23389 transitions.
[2023-11-29 05:51:24,161 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9266
[2023-11-29 05:51:24,161 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:51:24,166 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:51:24,366 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process
[2023-11-29 05:51:24,402 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 137
[2023-11-29 05:51:24,402 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:24,402 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:51:24,403 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:51:24,407 INFO  L85        PathProgramCache]: Analyzing trace with hash 545390326, now seen corresponding path program 1 times
[2023-11-29 05:51:24,407 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:51:24,408 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302146402]
[2023-11-29 05:51:24,410 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:24,410 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:51:25,741 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:51:25,741 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590718794]
[2023-11-29 05:51:25,743 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:51:25,743 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:51:25,743 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:51:25,744 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:51:25,745 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 05:51:57,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:58,462 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83126 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:51:58,670 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:51:59,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:51:59,949 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:51:59,949 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:59,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302146402]
[2023-11-29 05:51:59,949 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:51:59,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590718794]
[2023-11-29 05:51:59,950 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [590718794] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:59,950 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:59,952 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:51:59,952 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571589489]
[2023-11-29 05:51:59,953 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:59,960 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:51:59,960 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:59,967 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:51:59,967 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:51:59,969 INFO  L87              Difference]: Start difference. First operand 14014 states and 23389 transitions. Second operand  has 4 states, 4 states have (on average 2316.25) internal successors, (9265), 3 states have internal predecessors, (9265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:09,453 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:52:09,454 INFO  L93              Difference]: Finished difference Result 27918 states and 46592 transitions.
[2023-11-29 05:52:09,454 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:52:09,456 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2316.25) internal successors, (9265), 3 states have internal predecessors, (9265), 0 states have call successors, (0), 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 9265
[2023-11-29 05:52:09,457 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:52:09,469 INFO  L225             Difference]: With dead ends: 27918
[2023-11-29 05:52:09,469 INFO  L226             Difference]: Without dead ends: 14295
[2023-11-29 05:52:09,477 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9265 GetRequests, 9262 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:52:09,477 INFO  L413           NwaCegarLoop]: 16648 mSDtfsCounter, 45533 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 7412 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45533 SdHoareTripleChecker+Valid, 17550 SdHoareTripleChecker+Invalid, 7412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time
[2023-11-29 05:52:09,478 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45533 Valid, 17550 Invalid, 7412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7412 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time]
[2023-11-29 05:52:09,494 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14295 states.
[2023-11-29 05:52:09,600 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14295 to 14014.
[2023-11-29 05:52:09,613 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6690216227788481) internal successors, (23388), 14013 states have internal predecessors, (23388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:09,763 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23388 transitions.
[2023-11-29 05:52:09,763 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23388 transitions. Word has length 9265
[2023-11-29 05:52:09,765 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:52:09,766 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23388 transitions.
[2023-11-29 05:52:09,768 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2316.25) internal successors, (9265), 3 states have internal predecessors, (9265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:09,768 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23388 transitions.
[2023-11-29 05:52:10,169 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9267
[2023-11-29 05:52:10,169 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:52:10,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:52:10,375 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process
[2023-11-29 05:52:10,417 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137
[2023-11-29 05:52:10,417 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:10,417 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:52:10,419 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:52:10,422 INFO  L85        PathProgramCache]: Analyzing trace with hash -1507092433, now seen corresponding path program 1 times
[2023-11-29 05:52:10,422 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:52:10,422 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783617914]
[2023-11-29 05:52:10,423 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:10,423 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:52:11,615 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:52:11,615 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055706025]
[2023-11-29 05:52:11,617 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:11,617 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:11,617 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:52:11,618 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:52:11,621 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 05:52:43,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:52:44,511 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83127 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:52:44,721 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:52:46,297 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:52:46,297 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:52:46,297 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:52:46,297 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783617914]
[2023-11-29 05:52:46,297 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:52:46,297 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055706025]
[2023-11-29 05:52:46,297 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055706025] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:52:46,297 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:52:46,301 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:52:46,301 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825888824]
[2023-11-29 05:52:46,301 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:52:46,308 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:52:46,308 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:52:46,315 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:52:46,315 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:52:46,318 INFO  L87              Difference]: Start difference. First operand 14014 states and 23388 transitions. Second operand  has 4 states, 4 states have (on average 2316.5) internal successors, (9266), 3 states have internal predecessors, (9266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:56,758 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:52:56,758 INFO  L93              Difference]: Finished difference Result 28095 states and 46886 transitions.
[2023-11-29 05:52:56,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:52:56,760 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2316.5) internal successors, (9266), 3 states have internal predecessors, (9266), 0 states have call successors, (0), 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 9266
[2023-11-29 05:52:56,761 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:52:56,774 INFO  L225             Difference]: With dead ends: 28095
[2023-11-29 05:52:56,774 INFO  L226             Difference]: Without dead ends: 14472
[2023-11-29 05:52:56,781 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9266 GetRequests, 9263 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:52:56,782 INFO  L413           NwaCegarLoop]: 16912 mSDtfsCounter, 45416 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 7474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45416 SdHoareTripleChecker+Valid, 18079 SdHoareTripleChecker+Invalid, 7474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:52:56,782 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45416 Valid, 18079 Invalid, 7474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7474 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time]
[2023-11-29 05:52:56,799 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14472 states.
[2023-11-29 05:52:56,897 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14472 to 14014.
[2023-11-29 05:52:56,908 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6689502604724185) internal successors, (23387), 14013 states have internal predecessors, (23387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:56,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23387 transitions.
[2023-11-29 05:52:56,923 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23387 transitions. Word has length 9266
[2023-11-29 05:52:56,925 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:52:56,925 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23387 transitions.
[2023-11-29 05:52:56,927 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2316.5) internal successors, (9266), 3 states have internal predecessors, (9266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:56,927 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23387 transitions.
[2023-11-29 05:52:57,344 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9268
[2023-11-29 05:52:57,344 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:52:57,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:52:57,548 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process
[2023-11-29 05:52:57,576 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-29 05:52:57,576 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:57,577 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:52:57,578 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:52:57,581 INFO  L85        PathProgramCache]: Analyzing trace with hash 12252290, now seen corresponding path program 1 times
[2023-11-29 05:52:57,581 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:52:57,581 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651080965]
[2023-11-29 05:52:57,582 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:57,582 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:52:58,744 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:52:58,744 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44088269]
[2023-11-29 05:52:58,747 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:58,747 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:52:58,747 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:52:58,748 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:52:58,752 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 05:53:31,024 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:53:31,581 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83128 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:53:31,750 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:53:33,542 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:53:33,542 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:53:33,542 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:53:33,542 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651080965]
[2023-11-29 05:53:33,542 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:53:33,542 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44088269]
[2023-11-29 05:53:33,543 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [44088269] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:53:33,543 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:53:33,545 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:53:33,545 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161887514]
[2023-11-29 05:53:33,545 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:53:33,552 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:53:33,552 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:53:33,559 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:53:33,559 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:53:33,561 INFO  L87              Difference]: Start difference. First operand 14014 states and 23387 transitions. Second operand  has 4 states, 4 states have (on average 2316.75) internal successors, (9267), 3 states have internal predecessors, (9267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:53:43,492 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:53:43,492 INFO  L93              Difference]: Finished difference Result 28151 states and 46977 transitions.
[2023-11-29 05:53:43,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:53:43,494 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2316.75) internal successors, (9267), 3 states have internal predecessors, (9267), 0 states have call successors, (0), 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 9267
[2023-11-29 05:53:43,494 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:53:43,505 INFO  L225             Difference]: With dead ends: 28151
[2023-11-29 05:53:43,506 INFO  L226             Difference]: Without dead ends: 14528
[2023-11-29 05:53:43,512 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9267 GetRequests, 9264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:53:43,513 INFO  L413           NwaCegarLoop]: 16994 mSDtfsCounter, 45377 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 7494 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45377 SdHoareTripleChecker+Valid, 18244 SdHoareTripleChecker+Invalid, 7494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:53:43,513 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45377 Valid, 18244 Invalid, 7494 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7494 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time]
[2023-11-29 05:53:43,532 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14528 states.
[2023-11-29 05:53:43,665 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14528 to 14014.
[2023-11-29 05:53:43,679 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6688788981659888) internal successors, (23386), 14013 states have internal predecessors, (23386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:53:43,700 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23386 transitions.
[2023-11-29 05:53:43,700 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23386 transitions. Word has length 9267
[2023-11-29 05:53:43,702 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:53:43,702 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23386 transitions.
[2023-11-29 05:53:43,704 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2316.75) internal successors, (9267), 3 states have internal predecessors, (9267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:53:43,704 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23386 transitions.
[2023-11-29 05:53:44,104 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9269
[2023-11-29 05:53:44,104 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:53:44,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:53:44,308 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process
[2023-11-29 05:53:44,344 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137
[2023-11-29 05:53:44,345 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 05:53:44,345 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:53:44,346 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:53:44,350 INFO  L85        PathProgramCache]: Analyzing trace with hash 179791769, now seen corresponding path program 1 times
[2023-11-29 05:53:44,350 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:53:44,350 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978011971]
[2023-11-29 05:53:44,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:53:44,351 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:53:45,610 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:53:45,610 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980997667]
[2023-11-29 05:53:45,613 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:53:45,613 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:53:45,613 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:53:45,614 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:53:45,615 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 05:54:17,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:54:18,331 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83129 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:54:18,495 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:54:20,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:54:20,329 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:54:20,329 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:54:20,329 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978011971]
[2023-11-29 05:54:20,329 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:54:20,329 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980997667]
[2023-11-29 05:54:20,329 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [980997667] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:54:20,329 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:54:20,333 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:54:20,333 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388350110]
[2023-11-29 05:54:20,333 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:54:20,340 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:54:20,340 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:54:20,346 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:54:20,346 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:54:20,349 INFO  L87              Difference]: Start difference. First operand 14014 states and 23386 transitions. Second operand  has 4 states, 4 states have (on average 2317.0) internal successors, (9268), 3 states have internal predecessors, (9268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:54:30,045 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:54:30,045 INFO  L93              Difference]: Finished difference Result 28277 states and 47186 transitions.
[2023-11-29 05:54:30,046 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:54:30,047 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2317.0) internal successors, (9268), 3 states have internal predecessors, (9268), 0 states have call successors, (0), 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 9268
[2023-11-29 05:54:30,048 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:54:30,060 INFO  L225             Difference]: With dead ends: 28277
[2023-11-29 05:54:30,060 INFO  L226             Difference]: Without dead ends: 14654
[2023-11-29 05:54:30,067 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9268 GetRequests, 9265 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:54:30,067 INFO  L413           NwaCegarLoop]: 17184 mSDtfsCounter, 45294 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 7534 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45294 SdHoareTripleChecker+Valid, 18625 SdHoareTripleChecker+Invalid, 7534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time
[2023-11-29 05:54:30,068 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45294 Valid, 18625 Invalid, 7534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7534 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time]
[2023-11-29 05:54:30,083 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14654 states.
[2023-11-29 05:54:30,184 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14654 to 14014.
[2023-11-29 05:54:30,196 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6688075358595589) internal successors, (23385), 14013 states have internal predecessors, (23385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:54:30,213 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23385 transitions.
[2023-11-29 05:54:30,213 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23385 transitions. Word has length 9268
[2023-11-29 05:54:30,214 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:54:30,214 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23385 transitions.
[2023-11-29 05:54:30,216 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2317.0) internal successors, (9268), 3 states have internal predecessors, (9268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:54:30,216 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23385 transitions.
[2023-11-29 05:54:30,675 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9270
[2023-11-29 05:54:30,676 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:54:30,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:54:30,878 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process
[2023-11-29 05:54:30,913 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137
[2023-11-29 05:54:30,913 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 05:54:30,913 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:54:30,915 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:54:30,917 INFO  L85        PathProgramCache]: Analyzing trace with hash 1032965908, now seen corresponding path program 1 times
[2023-11-29 05:54:30,917 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:54:30,917 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049793456]
[2023-11-29 05:54:30,917 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:54:30,918 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:54:32,120 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:54:32,120 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584478318]
[2023-11-29 05:54:32,123 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:54:32,123 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:54:32,123 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:54:32,124 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:54:32,125 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 05:55:05,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:55:06,129 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83130 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:55:06,278 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:55:08,161 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:55:08,161 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:55:08,162 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:55:08,162 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049793456]
[2023-11-29 05:55:08,162 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:55:08,162 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584478318]
[2023-11-29 05:55:08,162 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [584478318] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:55:08,162 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:55:08,165 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:55:08,166 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458910209]
[2023-11-29 05:55:08,166 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:55:08,172 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:55:08,172 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:55:08,177 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:55:08,177 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:55:08,180 INFO  L87              Difference]: Start difference. First operand 14014 states and 23385 transitions. Second operand  has 4 states, 4 states have (on average 2317.25) internal successors, (9269), 3 states have internal predecessors, (9269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:55:17,895 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:55:17,895 INFO  L93              Difference]: Finished difference Result 28396 states and 47383 transitions.
[2023-11-29 05:55:17,895 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:55:17,897 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2317.25) internal successors, (9269), 3 states have internal predecessors, (9269), 0 states have call successors, (0), 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 9269
[2023-11-29 05:55:17,898 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:55:17,907 INFO  L225             Difference]: With dead ends: 28396
[2023-11-29 05:55:17,908 INFO  L226             Difference]: Without dead ends: 14773
[2023-11-29 05:55:17,912 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9269 GetRequests, 9266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:55:17,913 INFO  L413           NwaCegarLoop]: 17362 mSDtfsCounter, 45215 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 7574 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45215 SdHoareTripleChecker+Valid, 18982 SdHoareTripleChecker+Invalid, 7574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time
[2023-11-29 05:55:17,913 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45215 Valid, 18982 Invalid, 7574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7574 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time]
[2023-11-29 05:55:17,927 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14773 states.
[2023-11-29 05:55:18,021 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14773 to 14014.
[2023-11-29 05:55:18,033 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6687361735531292) internal successors, (23384), 14013 states have internal predecessors, (23384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:55:18,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23384 transitions.
[2023-11-29 05:55:18,049 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23384 transitions. Word has length 9269
[2023-11-29 05:55:18,049 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:55:18,049 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23384 transitions.
[2023-11-29 05:55:18,051 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2317.25) internal successors, (9269), 3 states have internal predecessors, (9269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:55:18,051 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23384 transitions.
[2023-11-29 05:55:18,477 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9271
[2023-11-29 05:55:18,477 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:55:18,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:55:18,679 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process
[2023-11-29 05:55:18,719 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137
[2023-11-29 05:55:18,719 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-29 05:55:18,719 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:55:18,720 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:55:18,723 INFO  L85        PathProgramCache]: Analyzing trace with hash 425026524, now seen corresponding path program 1 times
[2023-11-29 05:55:18,723 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:55:18,723 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519781688]
[2023-11-29 05:55:18,724 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:55:18,724 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:55:20,046 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:55:20,047 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049857044]
[2023-11-29 05:55:20,048 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:55:20,049 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:55:20,049 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:55:20,049 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:55:20,050 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 05:55:50,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:55:51,397 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83131 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:55:51,542 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:55:54,487 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:55:54,487 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:55:54,487 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:55:54,487 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519781688]
[2023-11-29 05:55:54,487 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:55:54,487 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049857044]
[2023-11-29 05:55:54,487 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049857044] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:55:54,487 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:55:54,490 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:55:54,490 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808489963]
[2023-11-29 05:55:54,490 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:55:54,495 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:55:54,495 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:55:54,500 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:55:54,500 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:55:54,502 INFO  L87              Difference]: Start difference. First operand 14014 states and 23384 transitions. Second operand  has 4 states, 4 states have (on average 2317.5) internal successors, (9270), 3 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:04,848 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:04,848 INFO  L93              Difference]: Finished difference Result 28927 states and 48266 transitions.
[2023-11-29 05:56:04,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:56:04,850 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2317.5) internal successors, (9270), 3 states have internal predecessors, (9270), 0 states have call successors, (0), 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 9270
[2023-11-29 05:56:04,851 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:04,862 INFO  L225             Difference]: With dead ends: 28927
[2023-11-29 05:56:04,862 INFO  L226             Difference]: Without dead ends: 15304
[2023-11-29 05:56:04,868 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9270 GetRequests, 9267 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:56:04,868 INFO  L413           NwaCegarLoop]: 17976 mSDtfsCounter, 44860 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 8114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44860 SdHoareTripleChecker+Valid, 20211 SdHoareTripleChecker+Invalid, 8114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:04,868 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44860 Valid, 20211 Invalid, 8114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8114 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time]
[2023-11-29 05:56:04,883 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15304 states.
[2023-11-29 05:56:04,976 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15304 to 14014.
[2023-11-29 05:56:04,988 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6686648112466995) internal successors, (23383), 14013 states have internal predecessors, (23383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:05,004 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23383 transitions.
[2023-11-29 05:56:05,005 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23383 transitions. Word has length 9270
[2023-11-29 05:56:05,006 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:05,006 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23383 transitions.
[2023-11-29 05:56:05,007 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2317.5) internal successors, (9270), 3 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:05,007 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23383 transitions.
[2023-11-29 05:56:05,404 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9272
[2023-11-29 05:56:05,404 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:05,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:56:05,606 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forcibly destroying the process
[2023-11-29 05:56:05,632 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-11-29 05:56:05,633 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:05,633 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:05,634 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:05,638 INFO  L85        PathProgramCache]: Analyzing trace with hash 319939781, now seen corresponding path program 1 times
[2023-11-29 05:56:05,638 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:05,638 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498138376]
[2023-11-29 05:56:05,640 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:05,640 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:07,024 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:07,024 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627325106]
[2023-11-29 05:56:07,026 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:07,026 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:07,026 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:07,027 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:07,030 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 05:56:37,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:38,528 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83132 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:56:38,677 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:56:41,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:56:41,609 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:56:41,609 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:41,609 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498138376]
[2023-11-29 05:56:41,609 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:56:41,609 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627325106]
[2023-11-29 05:56:41,609 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627325106] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:41,609 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:41,612 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:56:41,612 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853506289]
[2023-11-29 05:56:41,612 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:41,617 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:56:41,617 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:41,622 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:56:41,622 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:56:41,624 INFO  L87              Difference]: Start difference. First operand 14014 states and 23383 transitions. Second operand  has 4 states, 4 states have (on average 2317.75) internal successors, (9271), 3 states have internal predecessors, (9271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:52,264 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:52,264 INFO  L93              Difference]: Finished difference Result 28931 states and 48270 transitions.
[2023-11-29 05:56:52,265 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:56:52,267 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2317.75) internal successors, (9271), 3 states have internal predecessors, (9271), 0 states have call successors, (0), 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 9271
[2023-11-29 05:56:52,268 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:52,278 INFO  L225             Difference]: With dead ends: 28931
[2023-11-29 05:56:52,279 INFO  L226             Difference]: Without dead ends: 15308
[2023-11-29 05:56:52,284 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9271 GetRequests, 9268 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:56:52,285 INFO  L413           NwaCegarLoop]: 17980 mSDtfsCounter, 44855 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 8116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44855 SdHoareTripleChecker+Valid, 20220 SdHoareTripleChecker+Invalid, 8116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:52,285 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44855 Valid, 20220 Invalid, 8116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8116 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time]
[2023-11-29 05:56:52,300 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15308 states.
[2023-11-29 05:56:52,395 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15308 to 14014.
[2023-11-29 05:56:52,406 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6685934489402698) internal successors, (23382), 14013 states have internal predecessors, (23382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:52,421 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23382 transitions.
[2023-11-29 05:56:52,421 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23382 transitions. Word has length 9271
[2023-11-29 05:56:52,422 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:52,422 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23382 transitions.
[2023-11-29 05:56:52,424 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2317.75) internal successors, (9271), 3 states have internal predecessors, (9271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:56:52,424 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23382 transitions.
[2023-11-29 05:56:52,825 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9273
[2023-11-29 05:56:52,825 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:52,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:56:53,027 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forcibly destroying the process
[2023-11-29 05:56:53,056 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-11-29 05:56:53,056 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:53,057 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:53,057 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:53,060 INFO  L85        PathProgramCache]: Analyzing trace with hash 1038612977, now seen corresponding path program 1 times
[2023-11-29 05:56:53,060 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:53,060 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683830033]
[2023-11-29 05:56:53,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:53,062 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:54,265 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:56:54,266 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964033685]
[2023-11-29 05:56:54,267 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:54,267 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:56:54,267 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:56:54,268 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:56:54,270 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 05:57:25,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:25,840 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83133 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:57:26,008 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:57:29,861 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:57:29,861 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:57:29,861 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:29,861 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683830033]
[2023-11-29 05:57:29,861 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:57:29,861 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964033685]
[2023-11-29 05:57:29,862 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964033685] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:29,862 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:29,865 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:57:29,865 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385832751]
[2023-11-29 05:57:29,865 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:29,870 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:57:29,870 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:29,875 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:57:29,875 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:57:29,878 INFO  L87              Difference]: Start difference. First operand 14014 states and 23382 transitions. Second operand  has 4 states, 4 states have (on average 2318.0) internal successors, (9272), 3 states have internal predecessors, (9272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:40,591 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:40,592 INFO  L93              Difference]: Finished difference Result 29403 states and 49054 transitions.
[2023-11-29 05:57:40,592 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:57:40,594 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2318.0) internal successors, (9272), 3 states have internal predecessors, (9272), 0 states have call successors, (0), 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 9272
[2023-11-29 05:57:40,595 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:40,606 INFO  L225             Difference]: With dead ends: 29403
[2023-11-29 05:57:40,607 INFO  L226             Difference]: Without dead ends: 15780
[2023-11-29 05:57:40,612 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9272 GetRequests, 9269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:57:40,613 INFO  L413           NwaCegarLoop]: 18505 mSDtfsCounter, 44538 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 8636 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44538 SdHoareTripleChecker+Valid, 21271 SdHoareTripleChecker+Invalid, 8636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:40,613 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44538 Valid, 21271 Invalid, 8636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8636 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time]
[2023-11-29 05:57:40,630 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15780 states.
[2023-11-29 05:57:40,733 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15780 to 14014.
[2023-11-29 05:57:40,746 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.66852208663384) internal successors, (23381), 14013 states have internal predecessors, (23381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:40,763 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23381 transitions.
[2023-11-29 05:57:40,763 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23381 transitions. Word has length 9272
[2023-11-29 05:57:40,765 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:40,765 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23381 transitions.
[2023-11-29 05:57:40,767 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2318.0) internal successors, (9272), 3 states have internal predecessors, (9272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:40,767 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23381 transitions.
[2023-11-29 05:57:41,207 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9274
[2023-11-29 05:57:41,207 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:41,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:57:41,411 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forcibly destroying the process
[2023-11-29 05:57:41,439 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-11-29 05:57:41,440 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:41,440 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:41,441 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:41,444 INFO  L85        PathProgramCache]: Analyzing trace with hash 961787986, now seen corresponding path program 1 times
[2023-11-29 05:57:41,444 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:41,444 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077756687]
[2023-11-29 05:57:41,445 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:41,445 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:42,593 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:57:42,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246834046]
[2023-11-29 05:57:42,595 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:42,596 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:57:42,596 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:57:42,597 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:57:42,600 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 05:58:14,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:14,840 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83134 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:58:15,086 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:58:19,870 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:58:19,871 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:58:19,871 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:19,871 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077756687]
[2023-11-29 05:58:19,871 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:58:19,871 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246834046]
[2023-11-29 05:58:19,871 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [246834046] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:19,871 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:19,875 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:58:19,875 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068065391]
[2023-11-29 05:58:19,875 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:19,885 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:58:19,885 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:19,896 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:58:19,896 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:58:19,900 INFO  L87              Difference]: Start difference. First operand 14014 states and 23381 transitions. Second operand  has 4 states, 4 states have (on average 2318.25) internal successors, (9273), 3 states have internal predecessors, (9273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:34,401 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 05:58:34,952 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:34,952 INFO  L93              Difference]: Finished difference Result 29407 states and 49058 transitions.
[2023-11-29 05:58:34,953 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:58:34,956 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2318.25) internal successors, (9273), 3 states have internal predecessors, (9273), 0 states have call successors, (0), 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 9273
[2023-11-29 05:58:34,957 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:34,972 INFO  L225             Difference]: With dead ends: 29407
[2023-11-29 05:58:34,972 INFO  L226             Difference]: Without dead ends: 15784
[2023-11-29 05:58:34,981 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9273 GetRequests, 9270 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:58:34,981 INFO  L413           NwaCegarLoop]: 18509 mSDtfsCounter, 44533 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 8637 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44533 SdHoareTripleChecker+Valid, 21280 SdHoareTripleChecker+Invalid, 8638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8637 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:34,982 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44533 Valid, 21280 Invalid, 8638 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8637 Invalid, 1 Unknown, 0 Unchecked, 14.6s Time]
[2023-11-29 05:58:35,002 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15784 states.
[2023-11-29 05:58:35,143 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15784 to 14014.
[2023-11-29 05:58:35,154 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6684507243274103) internal successors, (23380), 14013 states have internal predecessors, (23380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:35,175 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23380 transitions.
[2023-11-29 05:58:35,176 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23380 transitions. Word has length 9273
[2023-11-29 05:58:35,177 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:35,178 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23380 transitions.
[2023-11-29 05:58:35,180 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2318.25) internal successors, (9273), 3 states have internal predecessors, (9273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:58:35,180 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23380 transitions.
[2023-11-29 05:58:35,985 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9275
[2023-11-29 05:58:35,985 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:35,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:58:36,188 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forcibly destroying the process
[2023-11-29 05:58:36,213 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-11-29 05:58:36,213 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:36,213 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:58:36,214 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:58:36,216 INFO  L85        PathProgramCache]: Analyzing trace with hash 1904837766, now seen corresponding path program 1 times
[2023-11-29 05:58:36,216 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:58:36,216 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074551282]
[2023-11-29 05:58:36,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:36,219 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:58:37,588 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:58:37,588 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062407972]
[2023-11-29 05:58:37,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:37,590 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:58:37,590 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:58:37,591 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:58:37,593 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 05:59:09,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:09,646 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83135 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:59:09,794 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:59:13,937 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:59:13,937 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:59:13,937 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:59:13,937 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074551282]
[2023-11-29 05:59:13,937 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:59:13,937 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062407972]
[2023-11-29 05:59:13,937 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062407972] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:59:13,937 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:59:13,940 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:59:13,940 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738732157]
[2023-11-29 05:59:13,940 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:59:13,945 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:59:13,945 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:59:13,950 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:59:13,950 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:59:13,952 INFO  L87              Difference]: Start difference. First operand 14014 states and 23380 transitions. Second operand  has 4 states, 4 states have (on average 2318.5) internal successors, (9274), 3 states have internal predecessors, (9274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:24,903 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:59:24,903 INFO  L93              Difference]: Finished difference Result 29645 states and 49452 transitions.
[2023-11-29 05:59:24,904 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:59:24,905 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2318.5) internal successors, (9274), 3 states have internal predecessors, (9274), 0 states have call successors, (0), 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 9274
[2023-11-29 05:59:24,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:59:24,917 INFO  L225             Difference]: With dead ends: 29645
[2023-11-29 05:59:24,917 INFO  L226             Difference]: Without dead ends: 16022
[2023-11-29 05:59:24,922 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9274 GetRequests, 9271 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:59:24,922 INFO  L413           NwaCegarLoop]: 18774 mSDtfsCounter, 44372 mSDsluCounter, 3037 mSDsCounter, 0 mSdLazyCounter, 8898 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44372 SdHoareTripleChecker+Valid, 21811 SdHoareTripleChecker+Invalid, 8898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:59:24,922 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44372 Valid, 21811 Invalid, 8898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8898 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time]
[2023-11-29 05:59:24,937 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16022 states.
[2023-11-29 05:59:25,031 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16022 to 14014.
[2023-11-29 05:59:25,043 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6683793620209806) internal successors, (23379), 14013 states have internal predecessors, (23379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:25,058 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23379 transitions.
[2023-11-29 05:59:25,058 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23379 transitions. Word has length 9274
[2023-11-29 05:59:25,059 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:59:25,059 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23379 transitions.
[2023-11-29 05:59:25,061 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2318.5) internal successors, (9274), 3 states have internal predecessors, (9274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:59:25,061 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23379 transitions.
[2023-11-29 05:59:25,506 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9276
[2023-11-29 05:59:25,506 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:59:25,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:59:25,708 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process
[2023-11-29 05:59:25,735 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-11-29 05:59:25,735 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:25,735 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:25,736 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:25,739 INFO  L85        PathProgramCache]: Analyzing trace with hash -146828941, now seen corresponding path program 1 times
[2023-11-29 05:59:25,739 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:25,739 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335803315]
[2023-11-29 05:59:25,740 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:25,740 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:26,882 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:59:26,882 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562489114]
[2023-11-29 05:59:26,883 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:26,884 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:59:26,884 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:59:26,885 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:59:26,887 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 05:59:57,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:58,349 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83136 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 05:59:58,492 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:00:02,843 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:00:02,843 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:00:02,843 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:00:02,843 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335803315]
[2023-11-29 06:00:02,843 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:00:02,843 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562489114]
[2023-11-29 06:00:02,843 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562489114] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:00:02,843 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:00:02,846 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 06:00:02,846 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996325190]
[2023-11-29 06:00:02,847 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:00:02,854 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:00:02,854 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:00:02,861 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:00:02,862 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:00:02,865 INFO  L87              Difference]: Start difference. First operand 14014 states and 23379 transitions. Second operand  has 4 states, 4 states have (on average 2318.75) internal successors, (9275), 3 states have internal predecessors, (9275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:00:13,760 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:00:13,760 INFO  L93              Difference]: Finished difference Result 29649 states and 49456 transitions.
[2023-11-29 06:00:13,761 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:00:13,763 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2318.75) internal successors, (9275), 3 states have internal predecessors, (9275), 0 states have call successors, (0), 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 9275
[2023-11-29 06:00:13,764 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:00:13,774 INFO  L225             Difference]: With dead ends: 29649
[2023-11-29 06:00:13,774 INFO  L226             Difference]: Without dead ends: 16026
[2023-11-29 06:00:13,778 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9275 GetRequests, 9272 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 06:00:13,779 INFO  L413           NwaCegarLoop]: 18778 mSDtfsCounter, 44367 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 8900 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44367 SdHoareTripleChecker+Valid, 21820 SdHoareTripleChecker+Invalid, 8900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time
[2023-11-29 06:00:13,779 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44367 Valid, 21820 Invalid, 8900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8900 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time]
[2023-11-29 06:00:13,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16026 states.
[2023-11-29 06:00:13,882 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16026 to 14014.
[2023-11-29 06:00:13,893 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14014 states, 14013 states have (on average 1.6683079997145507) internal successors, (23378), 14013 states have internal predecessors, (23378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:00:13,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 23378 transitions.
[2023-11-29 06:00:13,908 INFO  L78                 Accepts]: Start accepts. Automaton has 14014 states and 23378 transitions. Word has length 9275
[2023-11-29 06:00:13,909 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:00:13,909 INFO  L495      AbstractCegarLoop]: Abstraction has 14014 states and 23378 transitions.
[2023-11-29 06:00:13,911 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2318.75) internal successors, (9275), 3 states have internal predecessors, (9275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:00:13,911 INFO  L276                IsEmpty]: Start isEmpty. Operand 14014 states and 23378 transitions.
[2023-11-29 06:00:14,318 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9277
[2023-11-29 06:00:14,318 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:00:14,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 06:00:14,520 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forcibly destroying the process
[2023-11-29 06:00:14,549 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-11-29 06:00:14,550 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:14,550 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:00:14,550 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:00:14,552 INFO  L85        PathProgramCache]: Analyzing trace with hash -1333771109, now seen corresponding path program 1 times
[2023-11-29 06:00:14,552 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:00:14,552 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319355307]
[2023-11-29 06:00:14,553 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:14,553 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:00:15,707 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:00:15,708 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059131530]
[2023-11-29 06:00:15,709 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:15,709 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:00:15,709 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:00:15,710 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:00:15,712 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b46a2c8a-0526-4dfe-bcc8-af4a8ed19ed5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process