./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.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_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/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_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/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_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/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 5b3157e4b8464481afb456e60ff52ac14c54dfdd3857541f78f205fb0f185301
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 04:42:19,669 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 04:42:19,750 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 04:42:19,755 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 04:42:19,755 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 04:42:19,781 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 04:42:19,781 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 04:42:19,782 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 04:42:19,783 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 04:42:19,783 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 04:42:19,784 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 04:42:19,785 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 04:42:19,786 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 04:42:19,786 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 04:42:19,787 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 04:42:19,787 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 04:42:19,788 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 04:42:19,789 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 04:42:19,789 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 04:42:19,790 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 04:42:19,790 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 04:42:19,791 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 04:42:19,792 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 04:42:19,792 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 04:42:19,793 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 04:42:19,793 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 04:42:19,794 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 04:42:19,794 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 04:42:19,795 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 04:42:19,795 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 04:42:19,796 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 04:42:19,796 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 04:42:19,796 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 04:42:19,797 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 04:42:19,797 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 04:42:19,797 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 04:42:19,797 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 04:42:19,798 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 04:42:19,798 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 04:42:19,798 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_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/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_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/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 -> 5b3157e4b8464481afb456e60ff52ac14c54dfdd3857541f78f205fb0f185301
[2023-11-29 04:42:20,056 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 04:42:20,078 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 04:42:20,081 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 04:42:20,082 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 04:42:20,082 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 04:42:20,084 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c
[2023-11-29 04:42:23,257 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 04:42:23,651 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 04:42:23,651 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c
[2023-11-29 04:42:23,678 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/data/46ff0ec11/28d0e8c42a194b1892ade3c8858887ea/FLAG920bbfe70
[2023-11-29 04:42:23,691 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/data/46ff0ec11/28d0e8c42a194b1892ade3c8858887ea
[2023-11-29 04:42:23,694 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 04:42:23,696 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 04:42:23,698 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 04:42:23,698 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 04:42:23,703 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 04:42:23,703 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:42:23" (1/1) ...
[2023-11-29 04:42:23,704 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@609ee5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:23, skipping insertion in model container
[2023-11-29 04:42:23,705 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:42:23" (1/1) ...
[2023-11-29 04:42:23,831 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 04:42:24,067 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_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c[1176,1189]
[2023-11-29 04:42:24,914 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 04:42:24,925 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 04:42:24,939 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_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c[1176,1189]
[2023-11-29 04:42:25,498 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 04:42:25,517 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 04:42:25,517 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25 WrapperNode
[2023-11-29 04:42:25,517 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 04:42:25,519 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 04:42:25,519 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 04:42:25,519 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 04:42:25,528 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:25,764 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:27,556 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23136
[2023-11-29 04:42:27,556 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 04:42:27,557 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 04:42:27,557 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 04:42:27,557 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 04:42:27,568 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:27,569 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:28,108 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:28,502 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 04:42:28,503 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:28,503 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:28,923 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:29,055 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:29,145 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:29,304 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:29,588 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 04:42:29,589 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 04:42:29,589 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 04:42:29,590 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 04:42:29,590 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (1/1) ...
[2023-11-29 04:42:29,596 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 04:42:29,610 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:42:29,627 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 04:42:29,634 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 04:42:29,670 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 04:42:29,670 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 04:42:29,670 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 04:42:29,670 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 04:42:30,938 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 04:42:30,941 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 04:42:46,776 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 04:42:47,170 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 04:42:47,170 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 04:42:47,173 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:42:47 BoogieIcfgContainer
[2023-11-29 04:42:47,174 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 04:42:47,177 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 04:42:47,177 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 04:42:47,181 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 04:42:47,182 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:42:23" (1/3) ...
[2023-11-29 04:42:47,183 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbb3b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:42:47, skipping insertion in model container
[2023-11-29 04:42:47,183 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:25" (2/3) ...
[2023-11-29 04:42:47,183 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbb3b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:42:47, skipping insertion in model container
[2023-11-29 04:42:47,184 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:42:47" (3/3) ...
[2023-11-29 04:42:47,185 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.6.prop1-func-interl.c
[2023-11-29 04:42:47,208 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 04:42:47,209 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 04:42:47,389 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 04:42:47,405 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;@589dd97d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 04:42:47,406 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 04:42:47,439 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4868 states, 4866 states have (on average 1.6683107274969173) internal successors, (8118), 4867 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:47,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 231
[2023-11-29 04:42:47,458 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:42:47,459 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:42:47,460 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:42:47,465 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:42:47,465 INFO  L85        PathProgramCache]: Analyzing trace with hash 1415868166, now seen corresponding path program 1 times
[2023-11-29 04:42:47,473 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:42:47,473 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536800327]
[2023-11-29 04:42:47,474 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:42:47,474 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:42:47,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:42:48,894 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 04:42:48,895 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:42:48,896 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536800327]
[2023-11-29 04:42:48,897 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536800327] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:42:48,897 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:42:48,897 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:42:48,899 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398327986]
[2023-11-29 04:42:48,900 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:42:48,905 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:42:48,905 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:42:48,935 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:42:48,936 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:42:48,950 INFO  L87              Difference]: Start difference. First operand  has 4868 states, 4866 states have (on average 1.6683107274969173) internal successors, (8118), 4867 states have internal predecessors, (8118), 0 states have call successors, (0), 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 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:49,350 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:42:49,350 INFO  L93              Difference]: Finished difference Result 9543 states and 15917 transitions.
[2023-11-29 04:42:49,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:42:49,352 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230
[2023-11-29 04:42:49,354 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:42:49,393 INFO  L225             Difference]: With dead ends: 9543
[2023-11-29 04:42:49,393 INFO  L226             Difference]: Without dead ends: 4868
[2023-11-29 04:42:49,404 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 04:42:49,409 INFO  L413           NwaCegarLoop]: 8111 mSDtfsCounter, 1 mSDsluCounter, 16217 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24328 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 04:42:49,410 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24328 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 04:42:49,436 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4868 states.
[2023-11-29 04:42:49,551 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4868.
[2023-11-29 04:42:49,562 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4868 states, 4867 states have (on average 1.6675570166426956) internal successors, (8116), 4867 states have internal predecessors, (8116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:49,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4868 states to 4868 states and 8116 transitions.
[2023-11-29 04:42:49,581 INFO  L78                 Accepts]: Start accepts. Automaton has 4868 states and 8116 transitions. Word has length 230
[2023-11-29 04:42:49,582 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:42:49,583 INFO  L495      AbstractCegarLoop]: Abstraction has 4868 states and 8116 transitions.
[2023-11-29 04:42:49,583 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:49,583 INFO  L276                IsEmpty]: Start isEmpty. Operand 4868 states and 8116 transitions.
[2023-11-29 04:42:49,590 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2023-11-29 04:42:49,590 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:42:49,591 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:42:49,591 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 04:42:49,592 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:42:49,592 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:42:49,593 INFO  L85        PathProgramCache]: Analyzing trace with hash 943966490, now seen corresponding path program 1 times
[2023-11-29 04:42:49,593 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:42:49,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434332748]
[2023-11-29 04:42:49,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:42:49,594 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:42:49,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:42:50,139 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 04:42:50,139 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:42:50,140 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434332748]
[2023-11-29 04:42:50,140 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434332748] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:42:50,140 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:42:50,141 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:42:50,141 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687182678]
[2023-11-29 04:42:50,141 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:42:50,143 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:42:50,144 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:42:50,145 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:42:50,145 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:42:50,145 INFO  L87              Difference]: Start difference. First operand 4868 states and 8116 transitions. Second operand  has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:50,345 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:42:50,345 INFO  L93              Difference]: Finished difference Result 9546 states and 15915 transitions.
[2023-11-29 04:42:50,346 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:42:50,346 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231
[2023-11-29 04:42:50,347 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:42:50,367 INFO  L225             Difference]: With dead ends: 9546
[2023-11-29 04:42:50,367 INFO  L226             Difference]: Without dead ends: 4871
[2023-11-29 04:42:50,373 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 04:42:50,374 INFO  L413           NwaCegarLoop]: 8111 mSDtfsCounter, 1 mSDsluCounter, 16215 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24326 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:42:50,375 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24326 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:42:50,384 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4871 states.
[2023-11-29 04:42:50,444 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4870.
[2023-11-29 04:42:50,454 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4870 states, 4869 states have (on average 1.66728280961183) internal successors, (8118), 4869 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:50,469 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4870 states to 4870 states and 8118 transitions.
[2023-11-29 04:42:50,469 INFO  L78                 Accepts]: Start accepts. Automaton has 4870 states and 8118 transitions. Word has length 231
[2023-11-29 04:42:50,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:42:50,470 INFO  L495      AbstractCegarLoop]: Abstraction has 4870 states and 8118 transitions.
[2023-11-29 04:42:50,471 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:50,471 INFO  L276                IsEmpty]: Start isEmpty. Operand 4870 states and 8118 transitions.
[2023-11-29 04:42:50,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 233
[2023-11-29 04:42:50,473 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:42:50,474 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]
[2023-11-29 04:42:50,474 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 04:42:50,474 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:42:50,475 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:42:50,475 INFO  L85        PathProgramCache]: Analyzing trace with hash -1012240992, now seen corresponding path program 1 times
[2023-11-29 04:42:50,475 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:42:50,475 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714417250]
[2023-11-29 04:42:50,476 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:42:50,476 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:42:50,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:42:50,917 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 04:42:50,918 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:42:50,918 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714417250]
[2023-11-29 04:42:50,918 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714417250] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:42:50,918 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:42:50,919 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:42:50,919 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877088044]
[2023-11-29 04:42:50,919 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:42:50,920 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:42:50,921 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:42:50,922 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:42:50,922 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:42:50,922 INFO  L87              Difference]: Start difference. First operand 4870 states and 8118 transitions. Second operand  has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:51,203 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:42:51,203 INFO  L93              Difference]: Finished difference Result 14214 states and 23697 transitions.
[2023-11-29 04:42:51,204 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:42:51,204 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 232
[2023-11-29 04:42:51,205 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:42:51,246 INFO  L225             Difference]: With dead ends: 14214
[2023-11-29 04:42:51,246 INFO  L226             Difference]: Without dead ends: 9537
[2023-11-29 04:42:51,252 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 04:42:51,254 INFO  L413           NwaCegarLoop]: 8342 mSDtfsCounter, 7779 mSDsluCounter, 16442 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7779 SdHoareTripleChecker+Valid, 24784 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:42:51,255 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7779 Valid, 24784 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:42:51,268 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9537 states.
[2023-11-29 04:42:51,359 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9537 to 4872.
[2023-11-29 04:42:51,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4872 states, 4871 states have (on average 1.6670088277561075) internal successors, (8120), 4871 states have internal predecessors, (8120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:51,385 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 8120 transitions.
[2023-11-29 04:42:51,385 INFO  L78                 Accepts]: Start accepts. Automaton has 4872 states and 8120 transitions. Word has length 232
[2023-11-29 04:42:51,386 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:42:51,386 INFO  L495      AbstractCegarLoop]: Abstraction has 4872 states and 8120 transitions.
[2023-11-29 04:42:51,387 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:51,387 INFO  L276                IsEmpty]: Start isEmpty. Operand 4872 states and 8120 transitions.
[2023-11-29 04:42:51,391 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 234
[2023-11-29 04:42:51,391 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:42:51,392 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]
[2023-11-29 04:42:51,392 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 04:42:51,392 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:42:51,393 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:42:51,393 INFO  L85        PathProgramCache]: Analyzing trace with hash 285208448, now seen corresponding path program 1 times
[2023-11-29 04:42:51,394 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:42:51,394 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793102496]
[2023-11-29 04:42:51,394 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:42:51,395 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:42:51,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:42:51,931 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 04:42:51,932 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:42:51,932 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793102496]
[2023-11-29 04:42:51,932 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793102496] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:42:51,932 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:42:51,933 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:42:51,933 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044878521]
[2023-11-29 04:42:51,933 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:42:51,934 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 04:42:51,934 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:42:51,935 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 04:42:51,935 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:42:51,936 INFO  L87              Difference]: Start difference. First operand 4872 states and 8120 transitions. Second operand  has 5 states, 5 states have (on average 46.6) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:52,372 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:42:52,372 INFO  L93              Difference]: Finished difference Result 14361 states and 23938 transitions.
[2023-11-29 04:42:52,373 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 04:42:52,373 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 46.6) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 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 233
[2023-11-29 04:42:52,373 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:42:52,410 INFO  L225             Difference]: With dead ends: 14361
[2023-11-29 04:42:52,411 INFO  L226             Difference]: Without dead ends: 9682
[2023-11-29 04:42:52,418 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:42:52,420 INFO  L413           NwaCegarLoop]: 8338 mSDtfsCounter, 31475 mSDsluCounter, 16213 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31475 SdHoareTripleChecker+Valid, 24551 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:42:52,421 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31475 Valid, 24551 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:42:52,437 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9682 states.
[2023-11-29 04:42:52,548 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9682 to 5013.
[2023-11-29 04:42:52,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5013 states, 5012 states have (on average 1.666999201915403) internal successors, (8355), 5012 states have internal predecessors, (8355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:52,567 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 8355 transitions.
[2023-11-29 04:42:52,567 INFO  L78                 Accepts]: Start accepts. Automaton has 5013 states and 8355 transitions. Word has length 233
[2023-11-29 04:42:52,568 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:42:52,568 INFO  L495      AbstractCegarLoop]: Abstraction has 5013 states and 8355 transitions.
[2023-11-29 04:42:52,569 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 46.6) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:52,569 INFO  L276                IsEmpty]: Start isEmpty. Operand 5013 states and 8355 transitions.
[2023-11-29 04:42:52,830 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3311
[2023-11-29 04:42:52,830 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:42:52,832 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:42:52,832 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 04:42:52,832 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:42:52,833 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:42:52,834 INFO  L85        PathProgramCache]: Analyzing trace with hash 1354522112, now seen corresponding path program 1 times
[2023-11-29 04:42:52,834 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:42:52,834 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30848550]
[2023-11-29 04:42:52,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:42:52,835 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:42:53,253 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:42:53,254 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795411106]
[2023-11-29 04:42:53,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:42:53,255 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:42:53,256 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:42:53,259 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:42:53,271 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 04:42:58,927 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:42:59,053 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18677 conjuncts, 102 conjunts are in the unsatisfiable core
[2023-11-29 04:42:59,195 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:43:07,284 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:43:07,284 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:43:07,285 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:43:07,285 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30848550]
[2023-11-29 04:43:07,285 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:43:07,285 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795411106]
[2023-11-29 04:43:07,286 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [795411106] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:43:07,286 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:43:07,287 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39
[2023-11-29 04:43:07,288 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201150351]
[2023-11-29 04:43:07,288 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:43:07,294 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 39 states
[2023-11-29 04:43:07,294 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:43:07,301 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2023-11-29 04:43:07,302 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482
[2023-11-29 04:43:07,304 INFO  L87              Difference]: Start difference. First operand 5013 states and 8355 transitions. Second operand  has 39 states, 39 states have (on average 84.87179487179488) internal successors, (3310), 39 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:44:11,515 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:44:11,515 INFO  L93              Difference]: Finished difference Result 101291 states and 168802 transitions.
[2023-11-29 04:44:11,515 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 639 states. 
[2023-11-29 04:44:11,516 INFO  L78                 Accepts]: Start accepts. Automaton has  has 39 states, 39 states have (on average 84.87179487179488) internal successors, (3310), 39 states have internal predecessors, (3310), 0 states have call successors, (0), 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 3310
[2023-11-29 04:44:11,523 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:44:11,633 INFO  L225             Difference]: With dead ends: 101291
[2023-11-29 04:44:11,634 INFO  L226             Difference]: Without dead ends: 96612
[2023-11-29 04:44:11,717 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3983 GetRequests, 3310 SyntacticMatches, 0 SemanticMatches, 673 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221197 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=72844, Invalid=382106, Unknown=0, NotChecked=0, Total=454950
[2023-11-29 04:44:11,718 INFO  L413           NwaCegarLoop]: 15584 mSDtfsCounter, 1588572 mSDsluCounter, 546137 mSDsCounter, 0 mSdLazyCounter, 3470 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588572 SdHoareTripleChecker+Valid, 561721 SdHoareTripleChecker+Invalid, 3736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.4s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 3470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time
[2023-11-29 04:44:11,719 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1588572 Valid, 561721 Invalid, 3736 Unknown, 0 Unchecked, 3.4s Time], IncrementalHoareTripleChecker [266 Valid, 3470 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time]
[2023-11-29 04:44:11,780 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96612 states.
[2023-11-29 04:44:12,460 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96612 to 7520.
[2023-11-29 04:44:12,473 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7520 states, 7519 states have (on average 1.6659130203484507) internal successors, (12526), 7519 states have internal predecessors, (12526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:44:12,494 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 12526 transitions.
[2023-11-29 04:44:12,495 INFO  L78                 Accepts]: Start accepts. Automaton has 7520 states and 12526 transitions. Word has length 3310
[2023-11-29 04:44:12,501 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:44:12,501 INFO  L495      AbstractCegarLoop]: Abstraction has 7520 states and 12526 transitions.
[2023-11-29 04:44:12,502 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 39 states, 39 states have (on average 84.87179487179488) internal successors, (3310), 39 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:44:12,502 INFO  L276                IsEmpty]: Start isEmpty. Operand 7520 states and 12526 transitions.
[2023-11-29 04:44:12,600 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-29 04:44:12,600 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:44:12,603 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:44:12,675 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 04:44:12,804 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:44:12,804 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:44:12,805 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:44:12,806 INFO  L85        PathProgramCache]: Analyzing trace with hash -1479487512, now seen corresponding path program 1 times
[2023-11-29 04:44:12,806 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:44:12,807 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472330838]
[2023-11-29 04:44:12,807 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:44:12,808 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:44:13,164 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:44:13,164 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824261870]
[2023-11-29 04:44:13,165 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:44:13,165 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:44:13,165 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:44:13,166 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:44:13,168 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 04:44:17,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:44:17,775 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:44:17,874 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:44:18,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:44:18,178 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:44:18,178 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:44:18,179 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472330838]
[2023-11-29 04:44:18,179 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:44:18,179 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824261870]
[2023-11-29 04:44:18,179 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [824261870] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:44:18,179 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:44:18,180 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:44:18,181 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342551000]
[2023-11-29 04:44:18,181 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:44:18,186 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:44:18,186 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:44:18,190 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:44:18,190 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:44:18,192 INFO  L87              Difference]: Start difference. First operand 7520 states and 12526 transitions. Second operand  has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:44:18,836 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:44:18,837 INFO  L93              Difference]: Finished difference Result 19878 states and 33103 transitions.
[2023-11-29 04:44:18,837 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:44:18,838 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 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 3311
[2023-11-29 04:44:18,841 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:44:18,863 INFO  L225             Difference]: With dead ends: 19878
[2023-11-29 04:44:18,864 INFO  L226             Difference]: Without dead ends: 12551
[2023-11-29 04:44:18,874 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3320 GetRequests, 3308 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:44:18,875 INFO  L413           NwaCegarLoop]: 11700 mSDtfsCounter, 19977 mSDsluCounter, 43190 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19977 SdHoareTripleChecker+Valid, 54890 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:44:18,875 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19977 Valid, 54890 Invalid, 55 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:44:18,888 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12551 states.
[2023-11-29 04:44:18,991 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12551 to 7525.
[2023-11-29 04:44:19,000 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7525 states, 7524 states have (on average 1.6657363104731526) internal successors, (12533), 7524 states have internal predecessors, (12533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:44:19,013 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7525 states to 7525 states and 12533 transitions.
[2023-11-29 04:44:19,013 INFO  L78                 Accepts]: Start accepts. Automaton has 7525 states and 12533 transitions. Word has length 3311
[2023-11-29 04:44:19,015 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:44:19,015 INFO  L495      AbstractCegarLoop]: Abstraction has 7525 states and 12533 transitions.
[2023-11-29 04:44:19,016 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:44:19,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 7525 states and 12533 transitions.
[2023-11-29 04:44:19,082 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-29 04:44:19,082 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:44:19,084 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:44:19,138 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 04:44:19,285 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-29 04:44:19,285 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:44:19,286 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:44:19,288 INFO  L85        PathProgramCache]: Analyzing trace with hash -241817394, now seen corresponding path program 1 times
[2023-11-29 04:44:19,288 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:44:19,288 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861426698]
[2023-11-29 04:44:19,289 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:44:19,289 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:44:19,695 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:44:19,695 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238458369]
[2023-11-29 04:44:19,696 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:44:19,696 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:44:19,696 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:44:19,697 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:44:19,699 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 04:44:24,946 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:44:25,070 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 37 conjunts are in the unsatisfiable core
[2023-11-29 04:44:25,137 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:44:28,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:44:28,355 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:44:28,356 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:44:28,356 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861426698]
[2023-11-29 04:44:28,356 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:44:28,356 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238458369]
[2023-11-29 04:44:28,356 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238458369] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:44:28,356 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:44:28,357 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2023-11-29 04:44:28,357 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138108938]
[2023-11-29 04:44:28,357 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:44:28,360 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-11-29 04:44:28,361 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:44:28,363 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-11-29 04:44:28,364 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:44:28,365 INFO  L87              Difference]: Start difference. First operand 7525 states and 12533 transitions. Second operand  has 14 states, 14 states have (on average 236.5) internal successors, (3311), 14 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:44:30,757 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:44:30,757 INFO  L93              Difference]: Finished difference Result 44896 states and 74731 transitions.
[2023-11-29 04:44:30,757 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. 
[2023-11-29 04:44:30,758 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 236.5) internal successors, (3311), 14 states have internal predecessors, (3311), 0 states have call successors, (0), 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 3311
[2023-11-29 04:44:30,761 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:44:30,816 INFO  L225             Difference]: With dead ends: 44896
[2023-11-29 04:44:30,816 INFO  L226             Difference]: Without dead ends: 37564
[2023-11-29 04:44:30,827 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3361 GetRequests, 3314 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=446, Invalid=1906, Unknown=0, NotChecked=0, Total=2352
[2023-11-29 04:44:30,828 INFO  L413           NwaCegarLoop]: 11994 mSDtfsCounter, 128584 mSDsluCounter, 106890 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128584 SdHoareTripleChecker+Valid, 118884 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-29 04:44:30,828 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [128584 Valid, 118884 Invalid, 351 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [4 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-29 04:44:30,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37564 states.
[2023-11-29 04:44:31,062 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37564 to 11923.
[2023-11-29 04:44:31,078 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11923 states, 11922 states have (on average 1.6657440026841135) internal successors, (19859), 11922 states have internal predecessors, (19859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:44:31,096 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11923 states to 11923 states and 19859 transitions.
[2023-11-29 04:44:31,097 INFO  L78                 Accepts]: Start accepts. Automaton has 11923 states and 19859 transitions. Word has length 3311
[2023-11-29 04:44:31,100 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:44:31,100 INFO  L495      AbstractCegarLoop]: Abstraction has 11923 states and 19859 transitions.
[2023-11-29 04:44:31,101 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 236.5) internal successors, (3311), 14 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:44:31,101 INFO  L276                IsEmpty]: Start isEmpty. Operand 11923 states and 19859 transitions.
[2023-11-29 04:44:31,173 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3313
[2023-11-29 04:44:31,173 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:44:31,175 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:44:31,248 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 04:44:31,376 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:44:31,376 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:44:31,376 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:44:31,378 INFO  L85        PathProgramCache]: Analyzing trace with hash -1361388804, now seen corresponding path program 1 times
[2023-11-29 04:44:31,378 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:44:31,378 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163173146]
[2023-11-29 04:44:31,379 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:44:31,379 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:44:31,706 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:44:31,706 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993062029]
[2023-11-29 04:44:31,707 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:44:31,707 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:44:31,707 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:44:31,708 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:44:31,709 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 04:44:36,202 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:44:36,338 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18683 conjuncts, 56 conjunts are in the unsatisfiable core
[2023-11-29 04:44:36,403 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:44:42,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 4 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:44:42,056 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 04:44:53,963 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:44:53,963 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:44:53,963 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163173146]
[2023-11-29 04:44:53,963 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:44:53,963 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993062029]
[2023-11-29 04:44:53,963 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [993062029] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 04:44:53,963 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 04:44:53,965 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [22] total 38
[2023-11-29 04:44:53,966 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892575735]
[2023-11-29 04:44:53,966 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:44:53,968 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2023-11-29 04:44:53,968 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:44:53,973 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2023-11-29 04:44:53,973 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406
[2023-11-29 04:44:53,974 INFO  L87              Difference]: Start difference. First operand 11923 states and 19859 transitions. Second operand  has 18 states, 18 states have (on average 184.0) internal successors, (3312), 18 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:47:35,096 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:47:35,097 INFO  L93              Difference]: Finished difference Result 172438 states and 285457 transitions.
[2023-11-29 04:47:35,097 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. 
[2023-11-29 04:47:35,098 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 184.0) internal successors, (3312), 18 states have internal predecessors, (3312), 0 states have call successors, (0), 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 3312
[2023-11-29 04:47:35,101 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:47:35,214 INFO  L225             Difference]: With dead ends: 172438
[2023-11-29 04:47:35,214 INFO  L226             Difference]: Without dead ends: 160708
[2023-11-29 04:47:35,246 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6836 GetRequests, 6644 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12498 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=3781, Invalid=33661, Unknown=0, NotChecked=0, Total=37442
[2023-11-29 04:47:35,247 INFO  L413           NwaCegarLoop]: 36973 mSDtfsCounter, 111490 mSDsluCounter, 433005 mSDsCounter, 0 mSdLazyCounter, 156840 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111490 SdHoareTripleChecker+Valid, 469978 SdHoareTripleChecker+Invalid, 157623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.2s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 156840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:47:35,247 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [111490 Valid, 469978 Invalid, 157623 Unknown, 0 Unchecked, 2.2s Time], IncrementalHoareTripleChecker [783 Valid, 156840 Invalid, 0 Unknown, 0 Unchecked, 138.1s Time]
[2023-11-29 04:47:35,380 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 160708 states.
[2023-11-29 04:47:36,466 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 160708 to 11937.
[2023-11-29 04:47:36,478 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11937 states, 11936 states have (on average 1.6656333780160857) internal successors, (19881), 11936 states have internal predecessors, (19881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:47:36,495 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11937 states to 11937 states and 19881 transitions.
[2023-11-29 04:47:36,495 INFO  L78                 Accepts]: Start accepts. Automaton has 11937 states and 19881 transitions. Word has length 3312
[2023-11-29 04:47:36,498 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:47:36,498 INFO  L495      AbstractCegarLoop]: Abstraction has 11937 states and 19881 transitions.
[2023-11-29 04:47:36,499 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 184.0) internal successors, (3312), 18 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:47:36,499 INFO  L276                IsEmpty]: Start isEmpty. Operand 11937 states and 19881 transitions.
[2023-11-29 04:47:36,569 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3313
[2023-11-29 04:47:36,569 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:47:36,571 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:36,640 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 04:47:36,772 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:47:36,773 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:47:36,773 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:47:36,775 INFO  L85        PathProgramCache]: Analyzing trace with hash -796749984, now seen corresponding path program 1 times
[2023-11-29 04:47:36,775 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:47:36,775 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173128295]
[2023-11-29 04:47:36,776 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:47:36,776 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:47:37,070 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:47:37,070 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431675977]
[2023-11-29 04:47:37,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:47:37,071 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:47:37,071 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:47:37,073 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:47:37,075 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 04:47:43,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:47:43,514 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18683 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-29 04:47:43,593 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:47:43,887 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:47:43,887 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:47:43,887 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:47:43,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173128295]
[2023-11-29 04:47:43,887 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:47:43,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431675977]
[2023-11-29 04:47:43,887 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431675977] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:47:43,887 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:47:43,888 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:47:43,888 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373374452]
[2023-11-29 04:47:43,888 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:47:43,891 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:47:43,891 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:47:43,894 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:47:43,894 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:47:43,895 INFO  L87              Difference]: Start difference. First operand 11937 states and 19881 transitions. Second operand  has 4 states, 4 states have (on average 828.0) internal successors, (3312), 3 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:47:44,038 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:47:44,038 INFO  L93              Difference]: Finished difference Result 23829 states and 39683 transitions.
[2023-11-29 04:47:44,039 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:47:44,040 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 828.0) internal successors, (3312), 3 states have internal predecessors, (3312), 0 states have call successors, (0), 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 3312
[2023-11-29 04:47:44,040 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:47:44,051 INFO  L225             Difference]: With dead ends: 23829
[2023-11-29 04:47:44,051 INFO  L226             Difference]: Without dead ends: 12085
[2023-11-29 04:47:44,063 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3312 GetRequests, 3309 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 04:47:44,064 INFO  L413           NwaCegarLoop]: 8347 mSDtfsCounter, 15675 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15675 SdHoareTripleChecker+Valid, 8908 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 04:47:44,064 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15675 Valid, 8908 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 04:47:44,079 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12085 states.
[2023-11-29 04:47:44,254 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12085 to 11937.
[2023-11-29 04:47:44,266 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11937 states, 11936 states have (on average 1.665549597855228) internal successors, (19880), 11936 states have internal predecessors, (19880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:47:44,287 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11937 states to 11937 states and 19880 transitions.
[2023-11-29 04:47:44,287 INFO  L78                 Accepts]: Start accepts. Automaton has 11937 states and 19880 transitions. Word has length 3312
[2023-11-29 04:47:44,288 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:47:44,288 INFO  L495      AbstractCegarLoop]: Abstraction has 11937 states and 19880 transitions.
[2023-11-29 04:47:44,289 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 828.0) internal successors, (3312), 3 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:47:44,290 INFO  L276                IsEmpty]: Start isEmpty. Operand 11937 states and 19880 transitions.
[2023-11-29 04:47:44,652 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3314
[2023-11-29 04:47:44,652 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:47:44,655 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:44,730 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 04:47:44,857 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:47:44,857 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:47:44,857 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:47:44,859 INFO  L85        PathProgramCache]: Analyzing trace with hash 315352212, now seen corresponding path program 1 times
[2023-11-29 04:47:44,859 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:47:44,859 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140692337]
[2023-11-29 04:47:44,859 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:47:44,859 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:47:45,209 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:47:45,209 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296659339]
[2023-11-29 04:47:45,210 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:47:45,210 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:47:45,211 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:47:45,212 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:47:45,219 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 04:47:49,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:47:49,938 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18684 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-29 04:47:49,994 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:47:50,290 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:47:50,290 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:47:50,290 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:47:50,290 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140692337]
[2023-11-29 04:47:50,290 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:47:50,290 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296659339]
[2023-11-29 04:47:50,290 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296659339] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:47:50,290 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:47:50,291 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:47:50,292 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576605986]
[2023-11-29 04:47:50,292 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:47:50,294 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 04:47:50,294 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:47:50,297 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 04:47:50,297 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:47:50,298 INFO  L87              Difference]: Start difference. First operand 11937 states and 19880 transitions. Second operand  has 5 states, 5 states have (on average 662.6) internal successors, (3313), 4 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:47:50,486 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:47:50,486 INFO  L93              Difference]: Finished difference Result 23882 states and 39770 transitions.
[2023-11-29 04:47:50,487 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 04:47:50,487 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 662.6) internal successors, (3313), 4 states have internal predecessors, (3313), 0 states have call successors, (0), 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 3313
[2023-11-29 04:47:50,488 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:47:50,497 INFO  L225             Difference]: With dead ends: 23882
[2023-11-29 04:47:50,497 INFO  L226             Difference]: Without dead ends: 12138
[2023-11-29 04:47:50,504 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3313 GetRequests, 3309 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:47:50,505 INFO  L413           NwaCegarLoop]: 8426 mSDtfsCounter, 15913 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15913 SdHoareTripleChecker+Valid, 9632 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 04:47:50,505 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15913 Valid, 9632 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 04:47:50,516 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12138 states.
[2023-11-29 04:47:50,622 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12138 to 11937.
[2023-11-29 04:47:50,631 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11937 states, 11936 states have (on average 1.66546581769437) internal successors, (19879), 11936 states have internal predecessors, (19879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:47:50,647 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11937 states to 11937 states and 19879 transitions.
[2023-11-29 04:47:50,647 INFO  L78                 Accepts]: Start accepts. Automaton has 11937 states and 19879 transitions. Word has length 3313
[2023-11-29 04:47:50,648 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:47:50,648 INFO  L495      AbstractCegarLoop]: Abstraction has 11937 states and 19879 transitions.
[2023-11-29 04:47:50,649 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 662.6) internal successors, (3313), 4 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:47:50,649 INFO  L276                IsEmpty]: Start isEmpty. Operand 11937 states and 19879 transitions.
[2023-11-29 04:47:50,715 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3315
[2023-11-29 04:47:50,715 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:47:50,717 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:50,770 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 04:47:50,917 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 04:47:50,918 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:47:50,918 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:47:50,920 INFO  L85        PathProgramCache]: Analyzing trace with hash 1866638180, now seen corresponding path program 1 times
[2023-11-29 04:47:50,920 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:47:50,920 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229096545]
[2023-11-29 04:47:50,920 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:47:50,920 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:47:51,372 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:47:51,373 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663553255]
[2023-11-29 04:47:51,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:47:51,374 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:47:51,374 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:47:51,375 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:47:51,381 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 04:47:57,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:47:57,521 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18685 conjuncts, 25 conjunts are in the unsatisfiable core
[2023-11-29 04:47:57,581 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:48:03,892 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 6 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:48:03,892 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 04:48:17,951 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 6 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:48:17,952 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:48:17,952 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229096545]
[2023-11-29 04:48:17,952 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:48:17,952 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663553255]
[2023-11-29 04:48:17,952 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [663553255] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-29 04:48:17,952 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-29 04:48:17,954 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15
[2023-11-29 04:48:17,954 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578003610]
[2023-11-29 04:48:17,954 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-29 04:48:17,961 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-29 04:48:17,962 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:48:17,965 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-29 04:48:17,965 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240
[2023-11-29 04:48:17,966 INFO  L87              Difference]: Start difference. First operand 11937 states and 19879 transitions. Second operand  has 16 states, 16 states have (on average 223.3125) internal successors, (3573), 15 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:48:37,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:48:37,446 INFO  L93              Difference]: Finished difference Result 100669 states and 166232 transitions.
[2023-11-29 04:48:37,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2023-11-29 04:48:37,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 223.3125) internal successors, (3573), 15 states have internal predecessors, (3573), 0 states have call successors, (0), 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 3314
[2023-11-29 04:48:37,451 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:48:37,491 INFO  L225             Difference]: With dead ends: 100669
[2023-11-29 04:48:37,491 INFO  L226             Difference]: Without dead ends: 46849
[2023-11-29 04:48:37,522 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6643 GetRequests, 6612 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056
[2023-11-29 04:48:37,523 INFO  L413           NwaCegarLoop]: 14856 mSDtfsCounter, 135274 mSDsluCounter, 102373 mSDsCounter, 0 mSdLazyCounter, 16819 mSolverCounterSat, 1541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135274 SdHoareTripleChecker+Valid, 117229 SdHoareTripleChecker+Invalid, 18360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 1541 IncrementalHoareTripleChecker+Valid, 16819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time
[2023-11-29 04:48:37,523 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [135274 Valid, 117229 Invalid, 18360 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [1541 Valid, 16819 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time]
[2023-11-29 04:48:37,565 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46849 states.
[2023-11-29 04:48:37,827 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46849 to 12079.
[2023-11-29 04:48:37,837 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12079 states, 12078 states have (on average 1.6652591488657063) internal successors, (20113), 12078 states have internal predecessors, (20113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:48:37,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12079 states to 12079 states and 20113 transitions.
[2023-11-29 04:48:37,854 INFO  L78                 Accepts]: Start accepts. Automaton has 12079 states and 20113 transitions. Word has length 3314
[2023-11-29 04:48:37,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:48:37,855 INFO  L495      AbstractCegarLoop]: Abstraction has 12079 states and 20113 transitions.
[2023-11-29 04:48:37,856 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 223.3125) internal successors, (3573), 15 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:48:37,856 INFO  L276                IsEmpty]: Start isEmpty. Operand 12079 states and 20113 transitions.
[2023-11-29 04:48:37,920 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3316
[2023-11-29 04:48:37,920 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:48:37,922 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:48:37,995 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 04:48:38,122 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 04:48:38,123 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:48:38,123 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:48:38,124 INFO  L85        PathProgramCache]: Analyzing trace with hash -1330164412, now seen corresponding path program 1 times
[2023-11-29 04:48:38,125 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:48:38,125 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100491846]
[2023-11-29 04:48:38,125 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:48:38,125 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:48:38,501 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:48:38,501 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856594327]
[2023-11-29 04:48:38,502 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:48:38,502 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:48:38,503 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:48:38,504 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:48:38,505 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 04:48:43,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:48:43,539 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18688 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-11-29 04:48:43,594 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:49:04,628 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:49:04,628 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:49:04,628 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:49:04,628 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100491846]
[2023-11-29 04:49:04,628 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:49:04,628 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856594327]
[2023-11-29 04:49:04,628 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [856594327] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:49:04,628 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:49:04,629 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:49:04,630 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619475453]
[2023-11-29 04:49:04,630 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:49:04,633 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:49:04,633 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:49:04,636 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:49:04,636 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:49:04,637 INFO  L87              Difference]: Start difference. First operand 12079 states and 20113 transitions. Second operand  has 6 states, 6 states have (on average 552.5) internal successors, (3315), 6 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:49:14,551 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:49:14,552 INFO  L93              Difference]: Finished difference Result 35290 states and 58764 transitions.
[2023-11-29 04:49:14,552 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:49:14,553 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 552.5) internal successors, (3315), 6 states have internal predecessors, (3315), 0 states have call successors, (0), 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 3315
[2023-11-29 04:49:14,557 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:49:14,575 INFO  L225             Difference]: With dead ends: 35290
[2023-11-29 04:49:14,575 INFO  L226             Difference]: Without dead ends: 23544
[2023-11-29 04:49:14,582 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3316 GetRequests, 3310 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:49:14,582 INFO  L413           NwaCegarLoop]: 6127 mSDtfsCounter, 4578 mSDsluCounter, 23588 mSDsCounter, 0 mSdLazyCounter, 10881 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 29715 SdHoareTripleChecker+Invalid, 10882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time
[2023-11-29 04:49:14,583 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 29715 Invalid, 10882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10881 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time]
[2023-11-29 04:49:14,603 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23544 states.
[2023-11-29 04:49:14,799 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23544 to 23527.
[2023-11-29 04:49:14,821 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23527 states, 23526 states have (on average 1.6652214571112811) internal successors, (39176), 23526 states have internal predecessors, (39176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:49:14,857 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23527 states to 23527 states and 39176 transitions.
[2023-11-29 04:49:14,857 INFO  L78                 Accepts]: Start accepts. Automaton has 23527 states and 39176 transitions. Word has length 3315
[2023-11-29 04:49:14,860 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:49:14,860 INFO  L495      AbstractCegarLoop]: Abstraction has 23527 states and 39176 transitions.
[2023-11-29 04:49:14,861 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 552.5) internal successors, (3315), 6 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:49:14,861 INFO  L276                IsEmpty]: Start isEmpty. Operand 23527 states and 39176 transitions.
[2023-11-29 04:49:14,948 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3316
[2023-11-29 04:49:14,948 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:49:14,950 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:15,005 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 04:49:15,151 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-29 04:49:15,151 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:49:15,152 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:49:15,153 INFO  L85        PathProgramCache]: Analyzing trace with hash 1863186946, now seen corresponding path program 1 times
[2023-11-29 04:49:15,153 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:49:15,153 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816164912]
[2023-11-29 04:49:15,153 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:49:15,153 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:49:15,499 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:49:15,499 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156369434]
[2023-11-29 04:49:15,500 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:49:15,500 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:49:15,500 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:49:15,501 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:49:15,502 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 04:49:20,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:49:20,565 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18689 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-29 04:49:20,621 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:49:40,150 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:49:40,150 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:49:40,151 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:49:40,151 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816164912]
[2023-11-29 04:49:40,151 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:49:40,151 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156369434]
[2023-11-29 04:49:40,151 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156369434] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:49:40,151 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:49:40,152 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 04:49:40,153 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461876413]
[2023-11-29 04:49:40,153 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:49:40,155 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 04:49:40,156 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:49:40,159 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 04:49:40,159 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:49:40,160 INFO  L87              Difference]: Start difference. First operand 23527 states and 39176 transitions. Second operand  has 5 states, 5 states have (on average 663.0) internal successors, (3315), 5 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:49:48,184 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:49:48,184 INFO  L93              Difference]: Finished difference Result 58173 states and 96873 transitions.
[2023-11-29 04:49:48,185 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 04:49:48,186 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 663.0) internal successors, (3315), 5 states have internal predecessors, (3315), 0 states have call successors, (0), 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 3315
[2023-11-29 04:49:48,189 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:49:48,217 INFO  L225             Difference]: With dead ends: 58173
[2023-11-29 04:49:48,217 INFO  L226             Difference]: Without dead ends: 34979
[2023-11-29 04:49:48,231 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3316 GetRequests, 3311 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:49:48,232 INFO  L413           NwaCegarLoop]: 6115 mSDtfsCounter, 4582 mSDsluCounter, 17746 mSDsCounter, 0 mSdLazyCounter, 8571 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4582 SdHoareTripleChecker+Valid, 23861 SdHoareTripleChecker+Invalid, 8571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time
[2023-11-29 04:49:48,232 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4582 Valid, 23861 Invalid, 8571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8571 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time]
[2023-11-29 04:49:48,258 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34979 states.
[2023-11-29 04:49:48,548 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34979 to 34963.
[2023-11-29 04:49:48,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34963 states, 34962 states have (on average 1.6652937474972829) internal successors, (58222), 34962 states have internal predecessors, (58222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:49:48,622 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34963 states to 34963 states and 58222 transitions.
[2023-11-29 04:49:48,622 INFO  L78                 Accepts]: Start accepts. Automaton has 34963 states and 58222 transitions. Word has length 3315
[2023-11-29 04:49:48,625 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:49:48,625 INFO  L495      AbstractCegarLoop]: Abstraction has 34963 states and 58222 transitions.
[2023-11-29 04:49:48,626 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 663.0) internal successors, (3315), 5 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:49:48,626 INFO  L276                IsEmpty]: Start isEmpty. Operand 34963 states and 58222 transitions.
[2023-11-29 04:49:48,812 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3317
[2023-11-29 04:49:48,812 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:49:48,814 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:48,867 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 04:49:49,014 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 04:49:49,015 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:49:49,018 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:49:49,019 INFO  L85        PathProgramCache]: Analyzing trace with hash -1432021786, now seen corresponding path program 1 times
[2023-11-29 04:49:49,020 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:49:49,020 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788095162]
[2023-11-29 04:49:49,020 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:49:49,020 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:49:49,356 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:49:49,356 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611404028]
[2023-11-29 04:49:49,357 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:49:49,358 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:49:49,358 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:49:49,359 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:49:49,360 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 04:49:54,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:49:54,603 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18691 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-11-29 04:49:54,661 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:50:03,252 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:50:03,252 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:50:03,252 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:50:03,252 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788095162]
[2023-11-29 04:50:03,253 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:50:03,253 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611404028]
[2023-11-29 04:50:03,253 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611404028] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:50:03,253 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:50:03,254 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:50:03,254 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313190677]
[2023-11-29 04:50:03,254 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:50:03,257 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 04:50:03,257 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:50:03,260 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 04:50:03,260 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:50:03,261 INFO  L87              Difference]: Start difference. First operand 34963 states and 58222 transitions. Second operand  has 8 states, 8 states have (on average 414.5) internal successors, (3316), 7 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:50:12,589 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:50:12,589 INFO  L93              Difference]: Finished difference Result 92498 states and 154035 transitions.
[2023-11-29 04:50:12,590 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:50:12,590 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 414.5) internal successors, (3316), 7 states have internal predecessors, (3316), 0 states have call successors, (0), 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 3316
[2023-11-29 04:50:12,592 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:50:12,640 INFO  L225             Difference]: With dead ends: 92498
[2023-11-29 04:50:12,640 INFO  L226             Difference]: Without dead ends: 57868
[2023-11-29 04:50:12,662 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3321 GetRequests, 3309 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:50:12,663 INFO  L413           NwaCegarLoop]: 9047 mSDtfsCounter, 38352 mSDsluCounter, 39484 mSDsCounter, 0 mSdLazyCounter, 12010 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38352 SdHoareTripleChecker+Valid, 48531 SdHoareTripleChecker+Invalid, 12011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time
[2023-11-29 04:50:12,663 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [38352 Valid, 48531 Invalid, 12011 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 12010 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time]
[2023-11-29 04:50:12,705 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57868 states.
[2023-11-29 04:50:13,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57868 to 39522.
[2023-11-29 04:50:13,070 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39522 states, 39521 states have (on average 1.6653930821588523) internal successors, (65818), 39521 states have internal predecessors, (65818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:50:13,125 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39522 states to 39522 states and 65818 transitions.
[2023-11-29 04:50:13,125 INFO  L78                 Accepts]: Start accepts. Automaton has 39522 states and 65818 transitions. Word has length 3316
[2023-11-29 04:50:13,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:50:13,127 INFO  L495      AbstractCegarLoop]: Abstraction has 39522 states and 65818 transitions.
[2023-11-29 04:50:13,128 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 414.5) internal successors, (3316), 7 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:50:13,128 INFO  L276                IsEmpty]: Start isEmpty. Operand 39522 states and 65818 transitions.
[2023-11-29 04:50:13,200 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3317
[2023-11-29 04:50:13,200 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:50:13,202 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:13,273 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 04:50:13,403 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:50:13,403 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:50:13,404 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:50:13,405 INFO  L85        PathProgramCache]: Analyzing trace with hash -1222377496, now seen corresponding path program 1 times
[2023-11-29 04:50:13,405 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:50:13,405 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074552490]
[2023-11-29 04:50:13,405 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:50:13,406 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:50:13,735 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:50:13,735 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260748149]
[2023-11-29 04:50:13,736 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:50:13,736 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:50:13,736 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:50:13,737 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:50:13,738 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 04:50:18,714 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:50:18,843 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18692 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 04:50:18,902 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:50:34,046 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:50:34,047 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:50:34,047 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:50:34,047 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074552490]
[2023-11-29 04:50:34,047 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:50:34,047 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260748149]
[2023-11-29 04:50:34,047 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260748149] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:50:34,047 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:50:34,049 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 04:50:34,049 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522621150]
[2023-11-29 04:50:34,049 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:50:34,052 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:50:34,052 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:50:34,055 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:50:34,055 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:50:34,056 INFO  L87              Difference]: Start difference. First operand 39522 states and 65818 transitions. Second operand  has 6 states, 6 states have (on average 552.6666666666666) internal successors, (3316), 5 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:50:41,117 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:50:41,117 INFO  L93              Difference]: Finished difference Result 92576 states and 154142 transitions.
[2023-11-29 04:50:41,117 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 04:50:41,118 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 552.6666666666666) internal successors, (3316), 5 states have internal predecessors, (3316), 0 states have call successors, (0), 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 3316
[2023-11-29 04:50:41,120 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:50:41,167 INFO  L225             Difference]: With dead ends: 92576
[2023-11-29 04:50:41,167 INFO  L226             Difference]: Without dead ends: 57946
[2023-11-29 04:50:41,187 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3318 GetRequests, 3311 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2023-11-29 04:50:41,188 INFO  L413           NwaCegarLoop]: 6051 mSDtfsCounter, 21694 mSDsluCounter, 19728 mSDsCounter, 0 mSdLazyCounter, 6942 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21694 SdHoareTripleChecker+Valid, 25779 SdHoareTripleChecker+Invalid, 6988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 6942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time
[2023-11-29 04:50:41,188 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21694 Valid, 25779 Invalid, 6988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 6942 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time]
[2023-11-29 04:50:41,229 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57946 states.
[2023-11-29 04:50:41,598 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57946 to 44076.
[2023-11-29 04:50:41,629 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44076 states, 44075 states have (on average 1.6655246738513896) internal successors, (73408), 44075 states have internal predecessors, (73408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:50:41,683 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44076 states to 44076 states and 73408 transitions.
[2023-11-29 04:50:41,683 INFO  L78                 Accepts]: Start accepts. Automaton has 44076 states and 73408 transitions. Word has length 3316
[2023-11-29 04:50:41,684 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:50:41,684 INFO  L495      AbstractCegarLoop]: Abstraction has 44076 states and 73408 transitions.
[2023-11-29 04:50:41,685 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 552.6666666666666) internal successors, (3316), 5 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:50:41,685 INFO  L276                IsEmpty]: Start isEmpty. Operand 44076 states and 73408 transitions.
[2023-11-29 04:50:41,747 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3318
[2023-11-29 04:50:41,747 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:50:41,749 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:41,814 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 04:50:41,949 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 04:50:41,950 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:50:41,950 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:50:41,951 INFO  L85        PathProgramCache]: Analyzing trace with hash -1493140744, now seen corresponding path program 1 times
[2023-11-29 04:50:41,952 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:50:41,952 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500600915]
[2023-11-29 04:50:41,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:50:41,952 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:50:42,279 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:50:42,280 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124820666]
[2023-11-29 04:50:42,280 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:50:42,281 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:50:42,281 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:50:42,282 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:50:42,283 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 04:50:47,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:50:47,174 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18694 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-29 04:50:47,229 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:50:50,007 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:50:50,007 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:50:50,007 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:50:50,008 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500600915]
[2023-11-29 04:50:50,008 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:50:50,008 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124820666]
[2023-11-29 04:50:50,008 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124820666] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:50:50,008 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:50:50,009 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:50:50,009 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576863664]
[2023-11-29 04:50:50,009 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:50:50,012 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:50:50,012 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:50:50,014 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:50:50,014 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:50:50,015 INFO  L87              Difference]: Start difference. First operand 44076 states and 73408 transitions. Second operand  has 6 states, 6 states have (on average 552.8333333333334) internal successors, (3317), 6 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:50:57,498 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:50:57,498 INFO  L93              Difference]: Finished difference Result 99822 states and 166195 transitions.
[2023-11-29 04:50:57,498 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:50:57,499 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 552.8333333333334) internal successors, (3317), 6 states have internal predecessors, (3317), 0 states have call successors, (0), 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 3317
[2023-11-29 04:50:57,501 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:50:57,553 INFO  L225             Difference]: With dead ends: 99822
[2023-11-29 04:50:57,553 INFO  L226             Difference]: Without dead ends: 65004
[2023-11-29 04:50:57,577 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3319 GetRequests, 3312 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-11-29 04:50:57,578 INFO  L413           NwaCegarLoop]: 8313 mSDtfsCounter, 9352 mSDsluCounter, 22390 mSDsCounter, 0 mSdLazyCounter, 10644 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9352 SdHoareTripleChecker+Valid, 30703 SdHoareTripleChecker+Invalid, 10645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-11-29 04:50:57,578 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9352 Valid, 30703 Invalid, 10645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10644 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-11-29 04:50:57,624 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65004 states.
[2023-11-29 04:50:58,162 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65004 to 44352.
[2023-11-29 04:50:58,191 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44352 states, 44351 states have (on average 1.6649906428265429) internal successors, (73844), 44351 states have internal predecessors, (73844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:50:58,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44352 states to 44352 states and 73844 transitions.
[2023-11-29 04:50:58,250 INFO  L78                 Accepts]: Start accepts. Automaton has 44352 states and 73844 transitions. Word has length 3317
[2023-11-29 04:50:58,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:50:58,252 INFO  L495      AbstractCegarLoop]: Abstraction has 44352 states and 73844 transitions.
[2023-11-29 04:50:58,253 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 552.8333333333334) internal successors, (3317), 6 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:50:58,253 INFO  L276                IsEmpty]: Start isEmpty. Operand 44352 states and 73844 transitions.
[2023-11-29 04:50:58,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3319
[2023-11-29 04:50:58,327 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:50:58,329 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:58,386 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 04:50:58,529 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 04:50:58,530 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:50:58,531 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:50:58,533 INFO  L85        PathProgramCache]: Analyzing trace with hash 54693462, now seen corresponding path program 1 times
[2023-11-29 04:50:58,533 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:50:58,533 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178732443]
[2023-11-29 04:50:58,534 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:50:58,534 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:50:58,834 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:50:58,834 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252189520]
[2023-11-29 04:50:58,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:50:58,835 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:50:58,835 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:50:58,836 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:50:58,837 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 04:51:03,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:51:03,422 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18697 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 04:51:03,478 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:51:06,558 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:51:06,558 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:51:06,558 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:51:06,558 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178732443]
[2023-11-29 04:51:06,558 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:51:06,558 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252189520]
[2023-11-29 04:51:06,559 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [252189520] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:51:06,559 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:51:06,560 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 04:51:06,560 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422183262]
[2023-11-29 04:51:06,560 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:51:06,562 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 04:51:06,562 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:51:06,565 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 04:51:06,565 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:51:06,566 INFO  L87              Difference]: Start difference. First operand 44352 states and 73844 transitions. Second operand  has 8 states, 8 states have (on average 414.75) internal successors, (3318), 8 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:51:16,994 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:51:16,994 INFO  L93              Difference]: Finished difference Result 100386 states and 167099 transitions.
[2023-11-29 04:51:16,994 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:51:16,995 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 414.75) internal successors, (3318), 8 states have internal predecessors, (3318), 0 states have call successors, (0), 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 3318
[2023-11-29 04:51:16,997 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:51:17,050 INFO  L225             Difference]: With dead ends: 100386
[2023-11-29 04:51:17,050 INFO  L226             Difference]: Without dead ends: 65480
[2023-11-29 04:51:17,074 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3319 GetRequests, 3311 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-11-29 04:51:17,074 INFO  L413           NwaCegarLoop]: 8291 mSDtfsCounter, 9302 mSDsluCounter, 33118 mSDsCounter, 0 mSdLazyCounter, 13901 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9302 SdHoareTripleChecker+Valid, 41409 SdHoareTripleChecker+Invalid, 13905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:51:17,075 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9302 Valid, 41409 Invalid, 13905 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 13901 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time]
[2023-11-29 04:51:17,121 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65480 states.
[2023-11-29 04:51:17,526 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65480 to 44856.
[2023-11-29 04:51:17,560 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44856 states, 44855 states have (on average 1.6639393601605172) internal successors, (74636), 44855 states have internal predecessors, (74636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:51:17,621 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44856 states to 44856 states and 74636 transitions.
[2023-11-29 04:51:17,621 INFO  L78                 Accepts]: Start accepts. Automaton has 44856 states and 74636 transitions. Word has length 3318
[2023-11-29 04:51:17,622 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:51:17,622 INFO  L495      AbstractCegarLoop]: Abstraction has 44856 states and 74636 transitions.
[2023-11-29 04:51:17,623 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 414.75) internal successors, (3318), 8 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:51:17,623 INFO  L276                IsEmpty]: Start isEmpty. Operand 44856 states and 74636 transitions.
[2023-11-29 04:51:17,697 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3319
[2023-11-29 04:51:17,697 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:51:17,699 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:17,752 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 04:51:17,899 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 04:51:17,900 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:51:17,900 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:51:17,901 INFO  L85        PathProgramCache]: Analyzing trace with hash 463631508, now seen corresponding path program 1 times
[2023-11-29 04:51:17,901 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:51:17,902 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057082092]
[2023-11-29 04:51:17,902 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:51:17,902 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:51:18,222 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:51:18,223 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822254341]
[2023-11-29 04:51:18,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:51:18,224 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:51:18,224 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:51:18,225 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:51:18,226 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 04:51:23,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:51:23,213 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18698 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 04:51:23,268 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:51:26,109 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:51:26,109 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:51:26,109 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:51:26,109 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057082092]
[2023-11-29 04:51:26,109 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:51:26,109 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822254341]
[2023-11-29 04:51:26,109 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822254341] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:51:26,109 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:51:26,110 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:51:26,111 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068806386]
[2023-11-29 04:51:26,111 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:51:26,113 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:51:26,114 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:51:26,117 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:51:26,117 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:51:26,118 INFO  L87              Difference]: Start difference. First operand 44856 states and 74636 transitions. Second operand  has 6 states, 6 states have (on average 553.0) internal successors, (3318), 6 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:51:33,627 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:51:33,628 INFO  L93              Difference]: Finished difference Result 100918 states and 167903 transitions.
[2023-11-29 04:51:33,628 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:51:33,629 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 553.0) internal successors, (3318), 6 states have internal predecessors, (3318), 0 states have call successors, (0), 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 3318
[2023-11-29 04:51:33,630 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:51:33,682 INFO  L225             Difference]: With dead ends: 100918
[2023-11-29 04:51:33,682 INFO  L226             Difference]: Without dead ends: 65508
[2023-11-29 04:51:33,705 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3319 GetRequests, 3313 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:51:33,705 INFO  L413           NwaCegarLoop]: 5809 mSDtfsCounter, 9268 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 9229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9268 SdHoareTripleChecker+Valid, 23214 SdHoareTripleChecker+Invalid, 9230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2023-11-29 04:51:33,706 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9268 Valid, 23214 Invalid, 9230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9229 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2023-11-29 04:51:33,751 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65508 states.
[2023-11-29 04:51:34,158 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65508 to 45060.
[2023-11-29 04:51:34,191 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45060 states, 45059 states have (on average 1.6635966177678154) internal successors, (74960), 45059 states have internal predecessors, (74960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:51:34,252 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45060 states to 45060 states and 74960 transitions.
[2023-11-29 04:51:34,252 INFO  L78                 Accepts]: Start accepts. Automaton has 45060 states and 74960 transitions. Word has length 3318
[2023-11-29 04:51:34,254 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:51:34,254 INFO  L495      AbstractCegarLoop]: Abstraction has 45060 states and 74960 transitions.
[2023-11-29 04:51:34,254 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 553.0) internal successors, (3318), 6 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:51:34,254 INFO  L276                IsEmpty]: Start isEmpty. Operand 45060 states and 74960 transitions.
[2023-11-29 04:51:34,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3320
[2023-11-29 04:51:34,328 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:51:34,329 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:34,383 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 04:51:34,529 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 04:51:34,530 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:51:34,530 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:51:34,532 INFO  L85        PathProgramCache]: Analyzing trace with hash 1191130220, now seen corresponding path program 1 times
[2023-11-29 04:51:34,532 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:51:34,532 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128937115]
[2023-11-29 04:51:34,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:51:34,532 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:51:34,854 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:51:34,855 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541085856]
[2023-11-29 04:51:34,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:51:34,855 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:51:34,856 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:51:34,856 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:51:34,858 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 04:51:39,616 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:51:39,738 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18700 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 04:51:39,793 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:51:42,826 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:51:42,826 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:51:42,826 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:51:42,826 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128937115]
[2023-11-29 04:51:42,826 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:51:42,826 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541085856]
[2023-11-29 04:51:42,827 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541085856] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:51:42,827 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:51:42,828 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 04:51:42,828 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404965132]
[2023-11-29 04:51:42,828 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:51:42,831 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 04:51:42,831 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:51:42,834 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 04:51:42,834 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:51:42,835 INFO  L87              Difference]: Start difference. First operand 45060 states and 74960 transitions. Second operand  has 8 states, 8 states have (on average 414.875) internal successors, (3319), 8 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:51:54,926 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:51:54,926 INFO  L93              Difference]: Finished difference Result 101110 states and 168191 transitions.
[2023-11-29 04:51:54,927 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:51:54,927 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 414.875) internal successors, (3319), 8 states have internal predecessors, (3319), 0 states have call successors, (0), 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 3319
[2023-11-29 04:51:54,929 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:51:54,982 INFO  L225             Difference]: With dead ends: 101110
[2023-11-29 04:51:54,982 INFO  L226             Difference]: Without dead ends: 65496
[2023-11-29 04:51:55,005 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3320 GetRequests, 3312 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-11-29 04:51:55,006 INFO  L413           NwaCegarLoop]: 8269 mSDtfsCounter, 9341 mSDsluCounter, 38788 mSDsCounter, 0 mSdLazyCounter, 16152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9341 SdHoareTripleChecker+Valid, 47057 SdHoareTripleChecker+Invalid, 16154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time
[2023-11-29 04:51:55,006 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9341 Valid, 47057 Invalid, 16154 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2 Valid, 16152 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time]
[2023-11-29 04:51:55,052 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65496 states.
[2023-11-29 04:51:55,471 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65496 to 45276.
[2023-11-29 04:51:55,505 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45276 states, 45275 states have (on average 1.6630811706239648) internal successors, (75296), 45275 states have internal predecessors, (75296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:51:55,566 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45276 states to 45276 states and 75296 transitions.
[2023-11-29 04:51:55,566 INFO  L78                 Accepts]: Start accepts. Automaton has 45276 states and 75296 transitions. Word has length 3319
[2023-11-29 04:51:55,567 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:51:55,567 INFO  L495      AbstractCegarLoop]: Abstraction has 45276 states and 75296 transitions.
[2023-11-29 04:51:55,568 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 414.875) internal successors, (3319), 8 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:51:55,568 INFO  L276                IsEmpty]: Start isEmpty. Operand 45276 states and 75296 transitions.
[2023-11-29 04:51:55,776 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3320
[2023-11-29 04:51:55,776 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:51:55,778 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:55,831 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 04:51:55,978 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:51:55,979 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:51:55,979 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:51:55,982 INFO  L85        PathProgramCache]: Analyzing trace with hash 983307758, now seen corresponding path program 1 times
[2023-11-29 04:51:55,982 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:51:55,982 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137482649]
[2023-11-29 04:51:55,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:51:55,983 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:51:56,297 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:51:56,297 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987204451]
[2023-11-29 04:51:56,298 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:51:56,298 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:51:56,298 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:51:56,299 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:51:56,302 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 04:52:00,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:52:00,824 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18701 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 04:52:00,878 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:52:03,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:52:03,683 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:52:03,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:52:03,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137482649]
[2023-11-29 04:52:03,684 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:52:03,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987204451]
[2023-11-29 04:52:03,684 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987204451] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:52:03,684 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:52:03,685 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:52:03,685 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456536019]
[2023-11-29 04:52:03,685 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:52:03,688 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:52:03,688 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:52:03,691 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:52:03,691 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:52:03,692 INFO  L87              Difference]: Start difference. First operand 45276 states and 75296 transitions. Second operand  has 6 states, 6 states have (on average 553.1666666666666) internal successors, (3319), 6 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:52:10,824 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:52:10,824 INFO  L93              Difference]: Finished difference Result 101554 states and 168887 transitions.
[2023-11-29 04:52:10,829 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:52:10,830 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 553.1666666666666) internal successors, (3319), 6 states have internal predecessors, (3319), 0 states have call successors, (0), 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 3319
[2023-11-29 04:52:10,832 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:52:10,887 INFO  L225             Difference]: With dead ends: 101554
[2023-11-29 04:52:10,887 INFO  L226             Difference]: Without dead ends: 65724
[2023-11-29 04:52:10,911 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3320 GetRequests, 3314 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:52:10,912 INFO  L413           NwaCegarLoop]: 5809 mSDtfsCounter, 12194 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 9229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12194 SdHoareTripleChecker+Valid, 23214 SdHoareTripleChecker+Invalid, 9230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2023-11-29 04:52:10,912 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12194 Valid, 23214 Invalid, 9230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9229 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2023-11-29 04:52:10,960 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65724 states.
[2023-11-29 04:52:11,444 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65724 to 45492.
[2023-11-29 04:52:11,478 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45492 states, 45491 states have (on average 1.662834406805742) internal successors, (75644), 45491 states have internal predecessors, (75644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:52:11,539 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45492 states to 45492 states and 75644 transitions.
[2023-11-29 04:52:11,540 INFO  L78                 Accepts]: Start accepts. Automaton has 45492 states and 75644 transitions. Word has length 3319
[2023-11-29 04:52:11,541 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:52:11,541 INFO  L495      AbstractCegarLoop]: Abstraction has 45492 states and 75644 transitions.
[2023-11-29 04:52:11,542 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 553.1666666666666) internal successors, (3319), 6 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:52:11,542 INFO  L276                IsEmpty]: Start isEmpty. Operand 45492 states and 75644 transitions.
[2023-11-29 04:52:11,616 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3321
[2023-11-29 04:52:11,616 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:52:11,617 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:11,671 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 04:52:11,818 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:52:11,818 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:52:11,818 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:52:11,819 INFO  L85        PathProgramCache]: Analyzing trace with hash -694580230, now seen corresponding path program 1 times
[2023-11-29 04:52:11,820 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:52:11,820 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71396844]
[2023-11-29 04:52:11,820 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:52:11,820 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:52:12,145 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:52:12,146 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355784183]
[2023-11-29 04:52:12,147 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:52:12,147 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:52:12,147 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:52:12,148 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:52:12,149 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 04:52:16,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:52:16,816 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18703 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 04:52:16,871 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:52:20,153 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:52:20,154 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:52:20,154 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:52:20,154 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71396844]
[2023-11-29 04:52:20,154 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:52:20,154 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355784183]
[2023-11-29 04:52:20,154 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [355784183] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:52:20,154 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:52:20,155 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 04:52:20,155 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987536572]
[2023-11-29 04:52:20,155 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:52:20,158 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 04:52:20,158 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:52:20,162 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 04:52:20,163 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:52:20,163 INFO  L87              Difference]: Start difference. First operand 45492 states and 75644 transitions. Second operand  has 8 states, 8 states have (on average 415.0) internal successors, (3320), 8 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:52:32,082 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:52:32,082 INFO  L93              Difference]: Finished difference Result 101758 states and 169199 transitions.
[2023-11-29 04:52:32,082 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:52:32,083 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 415.0) internal successors, (3320), 8 states have internal predecessors, (3320), 0 states have call successors, (0), 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 3320
[2023-11-29 04:52:32,085 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:52:32,136 INFO  L225             Difference]: With dead ends: 101758
[2023-11-29 04:52:32,136 INFO  L226             Difference]: Without dead ends: 65712
[2023-11-29 04:52:32,159 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3321 GetRequests, 3313 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-11-29 04:52:32,160 INFO  L413           NwaCegarLoop]: 8246 mSDtfsCounter, 9343 mSDsluCounter, 38699 mSDsCounter, 0 mSdLazyCounter, 16089 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9343 SdHoareTripleChecker+Valid, 46945 SdHoareTripleChecker+Invalid, 16091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time
[2023-11-29 04:52:32,160 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9343 Valid, 46945 Invalid, 16091 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 16089 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time]
[2023-11-29 04:52:32,206 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65712 states.
[2023-11-29 04:52:32,613 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65712 to 45744.
[2023-11-29 04:52:32,647 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45744 states, 45743 states have (on average 1.6623308484358263) internal successors, (76040), 45743 states have internal predecessors, (76040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:52:32,709 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45744 states to 45744 states and 76040 transitions.
[2023-11-29 04:52:32,709 INFO  L78                 Accepts]: Start accepts. Automaton has 45744 states and 76040 transitions. Word has length 3320
[2023-11-29 04:52:32,710 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:52:32,710 INFO  L495      AbstractCegarLoop]: Abstraction has 45744 states and 76040 transitions.
[2023-11-29 04:52:32,711 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 415.0) internal successors, (3320), 8 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:52:32,711 INFO  L276                IsEmpty]: Start isEmpty. Operand 45744 states and 76040 transitions.
[2023-11-29 04:52:32,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3321
[2023-11-29 04:52:32,784 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:52:32,786 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:32,839 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 04:52:32,986 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:52:32,987 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:52:32,987 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:52:32,989 INFO  L85        PathProgramCache]: Analyzing trace with hash 1452858040, now seen corresponding path program 1 times
[2023-11-29 04:52:32,989 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:52:32,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807546498]
[2023-11-29 04:52:32,989 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:52:32,989 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:52:33,301 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:52:33,302 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888705236]
[2023-11-29 04:52:33,303 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:52:33,303 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:52:33,303 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:52:33,304 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:52:33,305 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 04:52:37,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:52:38,095 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18704 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 04:52:38,149 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:52:41,046 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:52:41,046 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:52:41,046 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:52:41,046 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807546498]
[2023-11-29 04:52:41,046 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:52:41,046 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888705236]
[2023-11-29 04:52:41,047 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [888705236] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:52:41,047 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:52:41,048 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:52:41,048 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240296888]
[2023-11-29 04:52:41,048 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:52:41,050 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:52:41,050 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:52:41,053 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:52:41,054 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:52:41,054 INFO  L87              Difference]: Start difference. First operand 45744 states and 76040 transitions. Second operand  has 6 states, 6 states have (on average 553.3333333333334) internal successors, (3320), 6 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:52:48,476 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:52:48,476 INFO  L93              Difference]: Finished difference Result 102274 states and 170015 transitions.
[2023-11-29 04:52:48,477 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:52:48,478 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 553.3333333333334) internal successors, (3320), 6 states have internal predecessors, (3320), 0 states have call successors, (0), 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 3320
[2023-11-29 04:52:48,479 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:52:48,531 INFO  L225             Difference]: With dead ends: 102274
[2023-11-29 04:52:48,531 INFO  L226             Difference]: Without dead ends: 65976
[2023-11-29 04:52:48,553 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3321 GetRequests, 3315 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:52:48,554 INFO  L413           NwaCegarLoop]: 5809 mSDtfsCounter, 12164 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 9229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12164 SdHoareTripleChecker+Valid, 23214 SdHoareTripleChecker+Invalid, 9230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-11-29 04:52:48,554 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12164 Valid, 23214 Invalid, 9230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9229 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-11-29 04:52:48,601 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65976 states.
[2023-11-29 04:52:49,019 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65976 to 45996.
[2023-11-29 04:52:49,053 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45996 states, 45995 states have (on average 1.662093705837591) internal successors, (76448), 45995 states have internal predecessors, (76448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:52:49,117 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45996 states to 45996 states and 76448 transitions.
[2023-11-29 04:52:49,117 INFO  L78                 Accepts]: Start accepts. Automaton has 45996 states and 76448 transitions. Word has length 3320
[2023-11-29 04:52:49,118 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:52:49,118 INFO  L495      AbstractCegarLoop]: Abstraction has 45996 states and 76448 transitions.
[2023-11-29 04:52:49,119 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 553.3333333333334) internal successors, (3320), 6 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:52:49,119 INFO  L276                IsEmpty]: Start isEmpty. Operand 45996 states and 76448 transitions.
[2023-11-29 04:52:49,315 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3322
[2023-11-29 04:52:49,316 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:52:49,317 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:49,370 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 04:52:49,517 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:52:49,518 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:52:49,518 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:52:49,519 INFO  L85        PathProgramCache]: Analyzing trace with hash 2042033270, now seen corresponding path program 1 times
[2023-11-29 04:52:49,519 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:52:49,519 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489433389]
[2023-11-29 04:52:49,520 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:52:49,520 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:52:49,847 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:52:49,848 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544277774]
[2023-11-29 04:52:49,848 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:52:49,848 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:52:49,849 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:52:49,849 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:52:49,851 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 04:52:54,338 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:52:54,458 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18706 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 04:52:54,509 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:52:57,379 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:52:57,379 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:52:57,379 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:52:57,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489433389]
[2023-11-29 04:52:57,380 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:52:57,380 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544277774]
[2023-11-29 04:52:57,380 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544277774] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:52:57,380 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:52:57,381 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 04:52:57,382 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560296586]
[2023-11-29 04:52:57,382 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:52:57,384 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 04:52:57,384 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:52:57,388 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 04:52:57,389 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:52:57,390 INFO  L87              Difference]: Start difference. First operand 45996 states and 76448 transitions. Second operand  has 8 states, 8 states have (on average 415.125) internal successors, (3321), 8 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:53:09,724 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:53:09,724 INFO  L93              Difference]: Finished difference Result 102514 states and 170387 transitions.
[2023-11-29 04:53:09,725 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:53:09,726 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 415.125) internal successors, (3321), 8 states have internal predecessors, (3321), 0 states have call successors, (0), 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 3321
[2023-11-29 04:53:09,728 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:53:09,783 INFO  L225             Difference]: With dead ends: 102514
[2023-11-29 04:53:09,784 INFO  L226             Difference]: Without dead ends: 65964
[2023-11-29 04:53:09,806 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3322 GetRequests, 3314 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-11-29 04:53:09,806 INFO  L413           NwaCegarLoop]: 8223 mSDtfsCounter, 9342 mSDsluCounter, 38610 mSDsCounter, 0 mSdLazyCounter, 16026 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9342 SdHoareTripleChecker+Valid, 46833 SdHoareTripleChecker+Invalid, 16028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time
[2023-11-29 04:53:09,807 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9342 Valid, 46833 Invalid, 16028 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 16026 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time]
[2023-11-29 04:53:09,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65964 states.
[2023-11-29 04:53:10,276 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65964 to 46248.
[2023-11-29 04:53:10,310 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 46248 states, 46247 states have (on average 1.6615996713300323) internal successors, (76844), 46247 states have internal predecessors, (76844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:53:10,374 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46248 states to 46248 states and 76844 transitions.
[2023-11-29 04:53:10,374 INFO  L78                 Accepts]: Start accepts. Automaton has 46248 states and 76844 transitions. Word has length 3321
[2023-11-29 04:53:10,375 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:53:10,375 INFO  L495      AbstractCegarLoop]: Abstraction has 46248 states and 76844 transitions.
[2023-11-29 04:53:10,376 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 415.125) internal successors, (3321), 8 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:53:10,376 INFO  L276                IsEmpty]: Start isEmpty. Operand 46248 states and 76844 transitions.
[2023-11-29 04:53:10,574 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3322
[2023-11-29 04:53:10,574 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:53:10,576 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:10,629 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 04:53:10,776 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2023-11-29 04:53:10,777 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:53:10,777 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:53:10,778 INFO  L85        PathProgramCache]: Analyzing trace with hash 944426234, now seen corresponding path program 1 times
[2023-11-29 04:53:10,778 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:53:10,778 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124501681]
[2023-11-29 04:53:10,778 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:53:10,779 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:53:11,199 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:53:11,199 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221411404]
[2023-11-29 04:53:11,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:53:11,200 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:53:11,200 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:53:11,201 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:53:11,203 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 04:53:16,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:53:16,131 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18708 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 04:53:16,177 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:53:19,097 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:53:19,097 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:53:19,097 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:53:19,097 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124501681]
[2023-11-29 04:53:19,097 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:53:19,097 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221411404]
[2023-11-29 04:53:19,097 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221411404] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:53:19,098 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:53:19,099 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:53:19,099 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434693005]
[2023-11-29 04:53:19,099 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:53:19,101 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:53:19,101 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:53:19,103 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:53:19,103 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:53:19,104 INFO  L87              Difference]: Start difference. First operand 46248 states and 76844 transitions. Second operand  has 6 states, 6 states have (on average 553.5) internal successors, (3321), 6 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:53:26,359 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:53:26,359 INFO  L93              Difference]: Finished difference Result 103030 states and 171203 transitions.
[2023-11-29 04:53:26,359 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:53:26,360 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 553.5) internal successors, (3321), 6 states have internal predecessors, (3321), 0 states have call successors, (0), 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 3321
[2023-11-29 04:53:26,362 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:53:26,413 INFO  L225             Difference]: With dead ends: 103030
[2023-11-29 04:53:26,413 INFO  L226             Difference]: Without dead ends: 66228
[2023-11-29 04:53:26,436 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3322 GetRequests, 3316 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:53:26,437 INFO  L413           NwaCegarLoop]: 5809 mSDtfsCounter, 12132 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 9229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12132 SdHoareTripleChecker+Valid, 23214 SdHoareTripleChecker+Invalid, 9230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:53:26,437 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12132 Valid, 23214 Invalid, 9230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9229 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2023-11-29 04:53:26,483 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66228 states.
[2023-11-29 04:53:26,968 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66228 to 46500.
[2023-11-29 04:53:27,002 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 46500 states, 46499 states have (on average 1.6613690617002517) internal successors, (77252), 46499 states have internal predecessors, (77252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:53:27,064 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46500 states to 46500 states and 77252 transitions.
[2023-11-29 04:53:27,065 INFO  L78                 Accepts]: Start accepts. Automaton has 46500 states and 77252 transitions. Word has length 3321
[2023-11-29 04:53:27,066 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:53:27,066 INFO  L495      AbstractCegarLoop]: Abstraction has 46500 states and 77252 transitions.
[2023-11-29 04:53:27,067 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 553.5) internal successors, (3321), 6 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:53:27,067 INFO  L276                IsEmpty]: Start isEmpty. Operand 46500 states and 77252 transitions.
[2023-11-29 04:53:27,147 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3323
[2023-11-29 04:53:27,147 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:53:27,148 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:27,202 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 04:53:27,348 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:53:27,349 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:53:27,349 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:53:27,350 INFO  L85        PathProgramCache]: Analyzing trace with hash 2063455044, now seen corresponding path program 1 times
[2023-11-29 04:53:27,350 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:53:27,350 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919073849]
[2023-11-29 04:53:27,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:53:27,351 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:53:27,718 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:53:27,718 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215854143]
[2023-11-29 04:53:27,719 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:53:27,719 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:53:27,719 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:53:27,720 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:53:27,721 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 04:53:32,500 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:53:32,627 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18709 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 04:53:32,672 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:53:35,873 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:53:35,874 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:53:35,874 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:53:35,874 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919073849]
[2023-11-29 04:53:35,874 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:53:35,874 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215854143]
[2023-11-29 04:53:35,874 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215854143] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:53:35,874 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:53:35,875 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 04:53:35,875 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696009470]
[2023-11-29 04:53:35,875 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:53:35,877 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 04:53:35,877 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:53:35,879 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 04:53:35,879 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:53:35,880 INFO  L87              Difference]: Start difference. First operand 46500 states and 77252 transitions. Second operand  has 8 states, 8 states have (on average 415.25) internal successors, (3322), 8 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:53:46,383 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:53:46,383 INFO  L93              Difference]: Finished difference Result 103270 states and 171575 transitions.
[2023-11-29 04:53:46,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:53:46,385 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 415.25) internal successors, (3322), 8 states have internal predecessors, (3322), 0 states have call successors, (0), 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 3322
[2023-11-29 04:53:46,386 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:53:46,435 INFO  L225             Difference]: With dead ends: 103270
[2023-11-29 04:53:46,436 INFO  L226             Difference]: Without dead ends: 66216
[2023-11-29 04:53:46,455 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3323 GetRequests, 3315 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-11-29 04:53:46,456 INFO  L413           NwaCegarLoop]: 8200 mSDtfsCounter, 9345 mSDsluCounter, 32853 mSDsCounter, 0 mSdLazyCounter, 13709 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9345 SdHoareTripleChecker+Valid, 41053 SdHoareTripleChecker+Invalid, 13711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:53:46,456 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9345 Valid, 41053 Invalid, 13711 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 13709 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time]
[2023-11-29 04:53:46,501 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66216 states.
[2023-11-29 04:53:46,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66216 to 46752.
[2023-11-29 04:53:46,933 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 46752 states, 46751 states have (on average 1.660884259160232) internal successors, (77648), 46751 states have internal predecessors, (77648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:53:47,159 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46752 states to 46752 states and 77648 transitions.
[2023-11-29 04:53:47,159 INFO  L78                 Accepts]: Start accepts. Automaton has 46752 states and 77648 transitions. Word has length 3322
[2023-11-29 04:53:47,160 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:53:47,160 INFO  L495      AbstractCegarLoop]: Abstraction has 46752 states and 77648 transitions.
[2023-11-29 04:53:47,161 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 415.25) internal successors, (3322), 8 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:53:47,161 INFO  L276                IsEmpty]: Start isEmpty. Operand 46752 states and 77648 transitions.
[2023-11-29 04:53:47,232 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3323
[2023-11-29 04:53:47,232 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:53:47,233 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:47,286 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-11-29 04:53:47,433 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-11-29 04:53:47,433 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:53:47,434 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:53:47,434 INFO  L85        PathProgramCache]: Analyzing trace with hash -1897592000, now seen corresponding path program 1 times
[2023-11-29 04:53:47,434 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:53:47,435 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136645916]
[2023-11-29 04:53:47,435 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:53:47,435 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:53:47,802 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:53:47,802 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076154888]
[2023-11-29 04:53:47,803 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:53:47,803 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:53:47,803 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:53:47,804 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:53:47,805 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 04:53:52,154 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:53:52,283 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18711 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 04:53:52,403 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:53:55,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:53:55,511 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:53:55,511 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:53:55,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136645916]
[2023-11-29 04:53:55,511 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:53:55,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076154888]
[2023-11-29 04:53:55,511 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076154888] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:53:55,511 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:53:55,512 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:53:55,513 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3122073]
[2023-11-29 04:53:55,513 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:53:55,516 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:53:55,516 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:53:55,519 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:53:55,519 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:53:55,521 INFO  L87              Difference]: Start difference. First operand 46752 states and 77648 transitions. Second operand  has 6 states, 6 states have (on average 553.6666666666666) internal successors, (3322), 6 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:02,581 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:54:02,581 INFO  L93              Difference]: Finished difference Result 103786 states and 172391 transitions.
[2023-11-29 04:54:02,581 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:54:02,582 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 553.6666666666666) internal successors, (3322), 6 states have internal predecessors, (3322), 0 states have call successors, (0), 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 3322
[2023-11-29 04:54:02,583 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:54:02,642 INFO  L225             Difference]: With dead ends: 103786
[2023-11-29 04:54:02,642 INFO  L226             Difference]: Without dead ends: 66480
[2023-11-29 04:54:02,669 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3323 GetRequests, 3317 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:54:02,669 INFO  L413           NwaCegarLoop]: 5809 mSDtfsCounter, 9205 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 9229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9205 SdHoareTripleChecker+Valid, 23214 SdHoareTripleChecker+Invalid, 9230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2023-11-29 04:54:02,670 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9205 Valid, 23214 Invalid, 9230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9229 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2023-11-29 04:54:02,718 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66480 states.
[2023-11-29 04:54:03,192 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66480 to 47004.
[2023-11-29 04:54:03,226 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47004 states, 47003 states have (on average 1.6606599578750292) internal successors, (78056), 47003 states have internal predecessors, (78056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:03,408 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47004 states to 47004 states and 78056 transitions.
[2023-11-29 04:54:03,408 INFO  L78                 Accepts]: Start accepts. Automaton has 47004 states and 78056 transitions. Word has length 3322
[2023-11-29 04:54:03,409 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:54:03,409 INFO  L495      AbstractCegarLoop]: Abstraction has 47004 states and 78056 transitions.
[2023-11-29 04:54:03,410 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 553.6666666666666) internal successors, (3322), 6 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:03,410 INFO  L276                IsEmpty]: Start isEmpty. Operand 47004 states and 78056 transitions.
[2023-11-29 04:54:03,478 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3324
[2023-11-29 04:54:03,479 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:54:03,479 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-11-29 04:54:03,533 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-11-29 04:54:03,680 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-11-29 04:54:03,680 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:54:03,681 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:54:03,682 INFO  L85        PathProgramCache]: Analyzing trace with hash -1075638400, now seen corresponding path program 1 times
[2023-11-29 04:54:03,682 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:54:03,682 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505783081]
[2023-11-29 04:54:03,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:54:03,683 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:54:04,055 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:54:04,055 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384262683]
[2023-11-29 04:54:04,056 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:54:04,056 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:54:04,057 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:54:04,058 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:54:04,060 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 04:54:08,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:54:08,769 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18712 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 04:54:08,815 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:54:11,862 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:54:11,863 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:54:11,863 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:54:11,863 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505783081]
[2023-11-29 04:54:11,863 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:54:11,863 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384262683]
[2023-11-29 04:54:11,863 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384262683] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:54:11,863 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:54:11,864 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 04:54:11,865 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538180279]
[2023-11-29 04:54:11,865 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:54:11,867 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 04:54:11,867 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:54:11,871 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 04:54:11,871 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:54:11,872 INFO  L87              Difference]: Start difference. First operand 47004 states and 78056 transitions. Second operand  has 8 states, 8 states have (on average 415.375) internal successors, (3323), 8 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:20,311 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:54:20,311 INFO  L93              Difference]: Finished difference Result 104026 states and 172763 transitions.
[2023-11-29 04:54:20,311 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:54:20,312 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 415.375) internal successors, (3323), 8 states have internal predecessors, (3323), 0 states have call successors, (0), 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 3323
[2023-11-29 04:54:20,372 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:54:20,414 INFO  L225             Difference]: With dead ends: 104026
[2023-11-29 04:54:20,414 INFO  L226             Difference]: Without dead ends: 66468
[2023-11-29 04:54:20,425 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3324 GetRequests, 3316 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-11-29 04:54:20,425 INFO  L413           NwaCegarLoop]: 8177 mSDtfsCounter, 9346 mSDsluCounter, 24632 mSDsCounter, 0 mSdLazyCounter, 10935 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9346 SdHoareTripleChecker+Valid, 32809 SdHoareTripleChecker+Invalid, 10937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time
[2023-11-29 04:54:20,426 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9346 Valid, 32809 Invalid, 10937 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 10935 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time]
[2023-11-29 04:54:20,461 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66468 states.
[2023-11-29 04:54:20,886 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66468 to 47256.
[2023-11-29 04:54:20,916 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47256 states, 47255 states have (on average 1.6601841075018517) internal successors, (78452), 47255 states have internal predecessors, (78452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:20,982 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47256 states to 47256 states and 78452 transitions.
[2023-11-29 04:54:20,982 INFO  L78                 Accepts]: Start accepts. Automaton has 47256 states and 78452 transitions. Word has length 3323
[2023-11-29 04:54:20,983 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:54:20,983 INFO  L495      AbstractCegarLoop]: Abstraction has 47256 states and 78452 transitions.
[2023-11-29 04:54:20,984 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 415.375) internal successors, (3323), 8 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:20,984 INFO  L276                IsEmpty]: Start isEmpty. Operand 47256 states and 78452 transitions.
[2023-11-29 04:54:21,148 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3324
[2023-11-29 04:54:21,148 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:54:21,149 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:21,192 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2023-11-29 04:54:21,349 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2023-11-29 04:54:21,349 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:54:21,350 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:54:21,350 INFO  L85        PathProgramCache]: Analyzing trace with hash 685954820, now seen corresponding path program 1 times
[2023-11-29 04:54:21,350 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:54:21,350 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765160636]
[2023-11-29 04:54:21,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:54:21,351 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:54:21,673 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:54:21,673 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158707911]
[2023-11-29 04:54:21,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:54:21,674 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:54:21,674 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:54:21,675 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:54:21,675 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-29 04:54:25,935 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:54:26,048 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18714 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 04:54:26,116 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:54:28,785 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:54:28,785 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:54:28,785 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:54:28,785 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765160636]
[2023-11-29 04:54:28,785 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:54:28,785 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158707911]
[2023-11-29 04:54:28,785 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [158707911] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:54:28,786 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:54:28,787 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:54:28,787 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579216777]
[2023-11-29 04:54:28,787 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:54:28,789 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:54:28,789 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:54:28,792 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:54:28,792 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:54:28,793 INFO  L87              Difference]: Start difference. First operand 47256 states and 78452 transitions. Second operand  has 6 states, 6 states have (on average 553.8333333333334) internal successors, (3323), 6 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:35,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:54:35,507 INFO  L93              Difference]: Finished difference Result 104542 states and 173579 transitions.
[2023-11-29 04:54:35,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:54:35,508 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 553.8333333333334) internal successors, (3323), 6 states have internal predecessors, (3323), 0 states have call successors, (0), 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 3323
[2023-11-29 04:54:35,510 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:54:35,550 INFO  L225             Difference]: With dead ends: 104542
[2023-11-29 04:54:35,551 INFO  L226             Difference]: Without dead ends: 66732
[2023-11-29 04:54:35,560 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3324 GetRequests, 3318 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:54:35,560 INFO  L413           NwaCegarLoop]: 5809 mSDtfsCounter, 12068 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 9229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12068 SdHoareTripleChecker+Valid, 23214 SdHoareTripleChecker+Invalid, 9230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time
[2023-11-29 04:54:35,560 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12068 Valid, 23214 Invalid, 9230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9229 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time]
[2023-11-29 04:54:35,594 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66732 states.
[2023-11-29 04:54:36,000 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66732 to 47508.
[2023-11-29 04:54:36,033 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47508 states, 47507 states have (on average 1.6599658997621403) internal successors, (78860), 47507 states have internal predecessors, (78860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:36,089 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47508 states to 47508 states and 78860 transitions.
[2023-11-29 04:54:36,089 INFO  L78                 Accepts]: Start accepts. Automaton has 47508 states and 78860 transitions. Word has length 3323
[2023-11-29 04:54:36,090 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:54:36,090 INFO  L495      AbstractCegarLoop]: Abstraction has 47508 states and 78860 transitions.
[2023-11-29 04:54:36,091 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 553.8333333333334) internal successors, (3323), 6 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:36,091 INFO  L276                IsEmpty]: Start isEmpty. Operand 47508 states and 78860 transitions.
[2023-11-29 04:54:36,235 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3325
[2023-11-29 04:54:36,235 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:54:36,236 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:36,300 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2023-11-29 04:54:36,437 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-11-29 04:54:36,437 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:54:36,437 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:54:36,438 INFO  L85        PathProgramCache]: Analyzing trace with hash -1258994290, now seen corresponding path program 1 times
[2023-11-29 04:54:36,438 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:54:36,438 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147275771]
[2023-11-29 04:54:36,438 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:54:36,439 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:54:36,793 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:54:36,794 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702198258]
[2023-11-29 04:54:36,795 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:54:36,795 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:54:36,795 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:54:36,796 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:54:36,798 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-11-29 04:54:40,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:54:41,002 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18715 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 04:54:41,047 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:54:44,215 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:54:44,215 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:54:44,215 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:54:44,215 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147275771]
[2023-11-29 04:54:44,215 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:54:44,215 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702198258]
[2023-11-29 04:54:44,216 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [702198258] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:54:44,216 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:54:44,217 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 04:54:44,217 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757901524]
[2023-11-29 04:54:44,217 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:54:44,219 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 04:54:44,219 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:54:44,221 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 04:54:44,221 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:54:44,222 INFO  L87              Difference]: Start difference. First operand 47508 states and 78860 transitions. Second operand  has 8 states, 8 states have (on average 415.5) internal successors, (3324), 8 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:52,950 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:54:52,950 INFO  L93              Difference]: Finished difference Result 104782 states and 173951 transitions.
[2023-11-29 04:54:52,950 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:54:52,951 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 415.5) internal successors, (3324), 8 states have internal predecessors, (3324), 0 states have call successors, (0), 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 3324
[2023-11-29 04:54:52,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:54:52,996 INFO  L225             Difference]: With dead ends: 104782
[2023-11-29 04:54:52,997 INFO  L226             Difference]: Without dead ends: 66720
[2023-11-29 04:54:53,017 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3325 GetRequests, 3317 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-11-29 04:54:53,018 INFO  L413           NwaCegarLoop]: 7965 mSDtfsCounter, 9402 mSDsluCounter, 29644 mSDsCounter, 0 mSdLazyCounter, 12744 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9402 SdHoareTripleChecker+Valid, 37609 SdHoareTripleChecker+Invalid, 12746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2023-11-29 04:54:53,018 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9402 Valid, 37609 Invalid, 12746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 12744 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2023-11-29 04:54:53,061 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66720 states.
[2023-11-29 04:54:53,443 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66720 to 49812.
[2023-11-29 04:54:53,478 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49812 states, 49811 states have (on average 1.6597940214008955) internal successors, (82676), 49811 states have internal predecessors, (82676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:53,540 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49812 states to 49812 states and 82676 transitions.
[2023-11-29 04:54:53,540 INFO  L78                 Accepts]: Start accepts. Automaton has 49812 states and 82676 transitions. Word has length 3324
[2023-11-29 04:54:53,542 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:54:53,542 INFO  L495      AbstractCegarLoop]: Abstraction has 49812 states and 82676 transitions.
[2023-11-29 04:54:53,542 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 415.5) internal successors, (3324), 8 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:54:53,542 INFO  L276                IsEmpty]: Start isEmpty. Operand 49812 states and 82676 transitions.
[2023-11-29 04:54:53,726 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3325
[2023-11-29 04:54:53,726 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:54:53,727 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:53,774 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-11-29 04:54:53,927 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-11-29 04:54:53,928 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:54:53,928 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:54:53,929 INFO  L85        PathProgramCache]: Analyzing trace with hash 1810787978, now seen corresponding path program 1 times
[2023-11-29 04:54:53,929 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:54:53,929 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916730236]
[2023-11-29 04:54:53,929 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:54:53,929 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:54:54,185 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:54:54,185 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341497941]
[2023-11-29 04:54:54,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:54:54,186 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:54:54,186 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:54:54,186 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:54:54,187 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-11-29 04:54:58,378 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:54:58,488 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18717 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 04:54:58,528 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:55:01,268 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:55:01,269 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:55:01,269 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:55:01,269 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916730236]
[2023-11-29 04:55:01,269 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:55:01,269 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341497941]
[2023-11-29 04:55:01,269 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341497941] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:55:01,269 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:55:01,270 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:55:01,270 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876273963]
[2023-11-29 04:55:01,270 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:55:01,271 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:55:01,272 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:55:01,273 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:55:01,274 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:55:01,274 INFO  L87              Difference]: Start difference. First operand 49812 states and 82676 transitions. Second operand  has 6 states, 6 states have (on average 554.0) internal successors, (3324), 6 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:55:07,412 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:55:07,412 INFO  L93              Difference]: Finished difference Result 109402 states and 181607 transitions.
[2023-11-29 04:55:07,412 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:55:07,413 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 554.0) internal successors, (3324), 6 states have internal predecessors, (3324), 0 states have call successors, (0), 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 3324
[2023-11-29 04:55:07,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:55:07,460 INFO  L225             Difference]: With dead ends: 109402
[2023-11-29 04:55:07,460 INFO  L226             Difference]: Without dead ends: 69036
[2023-11-29 04:55:07,482 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3325 GetRequests, 3319 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:55:07,483 INFO  L413           NwaCegarLoop]: 5809 mSDtfsCounter, 11808 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 9229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11808 SdHoareTripleChecker+Valid, 23214 SdHoareTripleChecker+Invalid, 9230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-11-29 04:55:07,483 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11808 Valid, 23214 Invalid, 9230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9229 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-11-29 04:55:07,527 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 69036 states.
[2023-11-29 04:55:07,927 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 69036 to 52116.
[2023-11-29 04:55:07,964 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 52116 states, 52115 states have (on average 1.6598676004988966) internal successors, (86504), 52115 states have internal predecessors, (86504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:55:08,027 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 52116 states to 52116 states and 86504 transitions.
[2023-11-29 04:55:08,028 INFO  L78                 Accepts]: Start accepts. Automaton has 52116 states and 86504 transitions. Word has length 3324
[2023-11-29 04:55:08,029 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:55:08,029 INFO  L495      AbstractCegarLoop]: Abstraction has 52116 states and 86504 transitions.
[2023-11-29 04:55:08,029 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 554.0) internal successors, (3324), 6 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:55:08,029 INFO  L276                IsEmpty]: Start isEmpty. Operand 52116 states and 86504 transitions.
[2023-11-29 04:55:08,094 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3326
[2023-11-29 04:55:08,094 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:55:08,095 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:55:08,141 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-11-29 04:55:08,295 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:55:08,296 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:55:08,296 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:55:08,297 INFO  L85        PathProgramCache]: Analyzing trace with hash -1322698048, now seen corresponding path program 1 times
[2023-11-29 04:55:08,297 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:55:08,297 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999397310]
[2023-11-29 04:55:08,297 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:55:08,297 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:55:08,554 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:55:08,555 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713692545]
[2023-11-29 04:55:08,555 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:55:08,555 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:55:08,555 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:55:08,556 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:55:08,557 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e8fce-a4e0-4734-b5de-edc1b46e3fcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process