./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-back-serstep.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_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/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_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/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_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/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 117312f10089d2cc67931235e0199eb498ae20d6e069fe62afb50fed34f4fb08
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 04:19:47,531 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 04:19:47,599 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 04:19:47,603 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 04:19:47,604 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 04:19:47,630 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 04:19:47,630 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 04:19:47,631 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 04:19:47,632 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 04:19:47,632 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 04:19:47,633 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 04:19:47,633 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 04:19:47,634 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 04:19:47,635 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 04:19:47,635 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 04:19:47,636 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 04:19:47,636 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 04:19:47,637 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 04:19:47,637 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 04:19:47,638 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 04:19:47,639 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 04:19:47,639 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 04:19:47,640 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 04:19:47,640 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 04:19:47,641 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 04:19:47,641 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 04:19:47,642 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 04:19:47,642 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 04:19:47,643 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 04:19:47,643 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 04:19:47,644 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 04:19:47,644 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 04:19:47,644 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 04:19:47,644 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 04:19:47,645 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 04:19:47,645 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 04:19:47,645 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 04:19:47,645 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 04:19:47,646 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 04:19:47,646 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/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_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/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 -> 117312f10089d2cc67931235e0199eb498ae20d6e069fe62afb50fed34f4fb08
[2023-11-29 04:19:47,867 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 04:19:47,888 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 04:19:47,891 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 04:19:47,892 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 04:19:47,892 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 04:19:47,894 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-back-serstep.c
[2023-11-29 04:19:50,644 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 04:19:51,194 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 04:19:51,195 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-back-serstep.c
[2023-11-29 04:19:51,263 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/data/bb8f8848b/380869539f6845d88bd1cdbbdfb5b20a/FLAG092b29581
[2023-11-29 04:19:51,275 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/data/bb8f8848b/380869539f6845d88bd1cdbbdfb5b20a
[2023-11-29 04:19:51,277 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 04:19:51,278 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 04:19:51,279 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 04:19:51,279 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 04:19:51,283 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 04:19:51,284 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:19:51" (1/1) ...
[2023-11-29 04:19:51,285 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8fa2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:51, skipping insertion in model container
[2023-11-29 04:19:51,285 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:19:51" (1/1) ...
[2023-11-29 04:19:51,508 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 04:19:51,828 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_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-back-serstep.c[1176,1189]
[2023-11-29 04:19:53,130 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 04:19:53,138 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 04:19:53,147 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_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-back-serstep.c[1176,1189]
[2023-11-29 04:19:54,147 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 04:19:54,162 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 04:19:54,162 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54 WrapperNode
[2023-11-29 04:19:54,163 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 04:19:54,164 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 04:19:54,164 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 04:19:54,164 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 04:19:54,171 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:54,386 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:56,572 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40163
[2023-11-29 04:19:56,573 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 04:19:56,574 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 04:19:56,574 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 04:19:56,574 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 04:19:56,586 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:56,586 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:57,198 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:57,567 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 04:19:57,567 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:57,567 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:58,165 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:58,265 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:58,380 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:58,629 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:59,017 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 04:19:59,018 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 04:19:59,018 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 04:19:59,018 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 04:19:59,019 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (1/1) ...
[2023-11-29 04:19:59,024 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 04:19:59,033 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:19:59,045 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 04:19:59,046 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 04:19:59,071 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 04:19:59,071 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 04:19:59,071 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 04:19:59,072 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 04:20:01,268 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 04:20:01,270 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 04:20:18,631 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 04:20:19,290 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 04:20:19,290 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 04:20:19,294 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:20:19 BoogieIcfgContainer
[2023-11-29 04:20:19,294 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 04:20:19,297 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 04:20:19,298 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 04:20:19,301 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 04:20:19,301 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:19:51" (1/3) ...
[2023-11-29 04:20:19,302 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4677ce8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:20:19, skipping insertion in model container
[2023-11-29 04:20:19,302 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:54" (2/3) ...
[2023-11-29 04:20:19,303 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4677ce8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:20:19, skipping insertion in model container
[2023-11-29 04:20:19,303 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:20:19" (3/3) ...
[2023-11-29 04:20:19,304 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.rushhour.2.prop1-back-serstep.c
[2023-11-29 04:20:19,324 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 04:20:19,324 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 04:20:19,491 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 04:20:19,498 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;@63bc7056, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 04:20:19,498 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 04:20:19,525 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6962 states, 6960 states have (on average 1.6666666666666667) internal successors, (11600), 6961 states have internal predecessors, (11600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:19,561 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 459
[2023-11-29 04:20:19,562 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:20:19,563 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:20:19,563 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:20:19,569 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:20:19,569 INFO  L85        PathProgramCache]: Analyzing trace with hash 1636305080, now seen corresponding path program 1 times
[2023-11-29 04:20:19,579 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:20:19,580 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943044034]
[2023-11-29 04:20:19,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:19,581 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:20:20,300 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:20:22,662 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 04:20:22,663 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:20:22,663 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943044034]
[2023-11-29 04:20:22,664 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943044034] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:20:22,664 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:20:22,664 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:20:22,666 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14152016]
[2023-11-29 04:20:22,667 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:20:22,672 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:20:22,672 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:20:22,698 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:20:22,699 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:20:22,713 INFO  L87              Difference]: Start difference. First operand  has 6962 states, 6960 states have (on average 1.6666666666666667) internal successors, (11600), 6961 states have internal predecessors, (11600), 0 states have call successors, (0), 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 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:23,106 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:20:23,106 INFO  L93              Difference]: Finished difference Result 13710 states and 22846 transitions.
[2023-11-29 04:20:23,107 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:20:23,108 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 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 458
[2023-11-29 04:20:23,111 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:20:23,153 INFO  L225             Difference]: With dead ends: 13710
[2023-11-29 04:20:23,153 INFO  L226             Difference]: Without dead ends: 6962
[2023-11-29 04:20:23,165 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 04:20:23,168 INFO  L413           NwaCegarLoop]: 11593 mSDtfsCounter, 1 mSDsluCounter, 23181 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34774 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:20:23,169 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34774 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:20:23,195 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6962 states.
[2023-11-29 04:20:23,315 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6962 to 6962.
[2023-11-29 04:20:23,329 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6962 states, 6961 states have (on average 1.666139922424939) internal successors, (11598), 6961 states have internal predecessors, (11598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:23,350 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 11598 transitions.
[2023-11-29 04:20:23,351 INFO  L78                 Accepts]: Start accepts. Automaton has 6962 states and 11598 transitions. Word has length 458
[2023-11-29 04:20:23,352 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:20:23,353 INFO  L495      AbstractCegarLoop]: Abstraction has 6962 states and 11598 transitions.
[2023-11-29 04:20:23,353 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:23,353 INFO  L276                IsEmpty]: Start isEmpty. Operand 6962 states and 11598 transitions.
[2023-11-29 04:20:23,359 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 460
[2023-11-29 04:20:23,359 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:20:23,360 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:20:23,360 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 04:20:23,360 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:20:23,361 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:20:23,361 INFO  L85        PathProgramCache]: Analyzing trace with hash -812422400, now seen corresponding path program 1 times
[2023-11-29 04:20:23,361 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:20:23,361 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224681737]
[2023-11-29 04:20:23,362 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:23,362 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:20:23,616 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:20:24,375 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 04:20:24,375 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:20:24,376 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224681737]
[2023-11-29 04:20:24,376 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224681737] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:20:24,376 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:20:24,376 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:20:24,377 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719719925]
[2023-11-29 04:20:24,377 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:20:24,379 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:20:24,379 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:20:24,380 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:20:24,381 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:20:24,381 INFO  L87              Difference]: Start difference. First operand 6962 states and 11598 transitions. Second operand  has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:24,684 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:20:24,684 INFO  L93              Difference]: Finished difference Result 13713 states and 22844 transitions.
[2023-11-29 04:20:24,685 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:20:24,685 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 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 459
[2023-11-29 04:20:24,686 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:20:24,719 INFO  L225             Difference]: With dead ends: 13713
[2023-11-29 04:20:24,719 INFO  L226             Difference]: Without dead ends: 6965
[2023-11-29 04:20:24,726 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 04:20:24,727 INFO  L413           NwaCegarLoop]: 11593 mSDtfsCounter, 1 mSDsluCounter, 23179 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34772 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 04:20:24,728 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34772 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:20:24,738 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6965 states.
[2023-11-29 04:20:24,823 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6965 to 6964.
[2023-11-29 04:20:24,838 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6964 states, 6963 states have (on average 1.665948585379865) internal successors, (11600), 6963 states have internal predecessors, (11600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:24,857 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 11600 transitions.
[2023-11-29 04:20:24,857 INFO  L78                 Accepts]: Start accepts. Automaton has 6964 states and 11600 transitions. Word has length 459
[2023-11-29 04:20:24,858 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:20:24,858 INFO  L495      AbstractCegarLoop]: Abstraction has 6964 states and 11600 transitions.
[2023-11-29 04:20:24,858 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:24,859 INFO  L276                IsEmpty]: Start isEmpty. Operand 6964 states and 11600 transitions.
[2023-11-29 04:20:24,864 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 461
[2023-11-29 04:20:24,864 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:20:24,864 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:20:24,864 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 04:20:24,865 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:20:24,865 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:20:24,865 INFO  L85        PathProgramCache]: Analyzing trace with hash -2145680300, now seen corresponding path program 1 times
[2023-11-29 04:20:24,866 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:20:24,866 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274549467]
[2023-11-29 04:20:24,866 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:24,866 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:20:25,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:20:26,022 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 04:20:26,022 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:20:26,023 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274549467]
[2023-11-29 04:20:26,023 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274549467] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:20:26,023 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:20:26,023 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:20:26,024 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358730530]
[2023-11-29 04:20:26,024 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:20:26,025 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 04:20:26,025 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:20:26,026 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 04:20:26,026 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:20:26,027 INFO  L87              Difference]: Start difference. First operand 6964 states and 11600 transitions. Second operand  has 5 states, 5 states have (on average 92.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:26,729 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:20:26,729 INFO  L93              Difference]: Finished difference Result 20919 states and 34848 transitions.
[2023-11-29 04:20:26,730 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 04:20:26,730 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 92.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 460
[2023-11-29 04:20:26,731 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:20:26,801 INFO  L225             Difference]: With dead ends: 20919
[2023-11-29 04:20:26,801 INFO  L226             Difference]: Without dead ends: 14169
[2023-11-29 04:20:26,812 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 04:20:26,814 INFO  L413           NwaCegarLoop]: 12362 mSDtfsCounter, 45611 mSDsluCounter, 23180 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45611 SdHoareTripleChecker+Valid, 35542 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:20:26,814 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45611 Valid, 35542 Invalid, 16 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:20:26,836 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14169 states.
[2023-11-29 04:20:27,006 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14169 to 7428.
[2023-11-29 04:20:27,018 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7428 states, 7427 states have (on average 1.6658139221758448) internal successors, (12372), 7427 states have internal predecessors, (12372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:27,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 12372 transitions.
[2023-11-29 04:20:27,033 INFO  L78                 Accepts]: Start accepts. Automaton has 7428 states and 12372 transitions. Word has length 460
[2023-11-29 04:20:27,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:20:27,034 INFO  L495      AbstractCegarLoop]: Abstraction has 7428 states and 12372 transitions.
[2023-11-29 04:20:27,035 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 92.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:27,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 7428 states and 12372 transitions.
[2023-11-29 04:20:27,285 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4958
[2023-11-29 04:20:27,286 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:20:27,288 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:20:27,289 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 04:20:27,289 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:20:27,290 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:20:27,292 INFO  L85        PathProgramCache]: Analyzing trace with hash 319563325, now seen corresponding path program 1 times
[2023-11-29 04:20:27,292 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:20:27,292 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759456435]
[2023-11-29 04:20:27,292 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:27,293 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:20:28,021 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:20:28,023 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101890581]
[2023-11-29 04:20:28,025 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:28,025 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:20:28,025 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:20:28,037 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:20:28,045 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 04:20:39,545 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:20:39,842 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41778 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:20:40,015 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:20:40,628 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked.
[2023-11-29 04:20:40,628 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:20:40,629 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:20:40,629 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759456435]
[2023-11-29 04:20:40,629 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:20:40,629 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101890581]
[2023-11-29 04:20:40,629 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101890581] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:20:40,629 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:20:40,631 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:20:40,631 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810567644]
[2023-11-29 04:20:40,631 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:20:40,636 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:20:40,637 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:20:40,640 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:20:40,640 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:20:40,643 INFO  L87              Difference]: Start difference. First operand 7428 states and 12372 transitions. Second operand  has 7 states, 7 states have (on average 664.2857142857143) internal successors, (4650), 7 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:41,258 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:20:41,258 INFO  L93              Difference]: Finished difference Result 20925 states and 34854 transitions.
[2023-11-29 04:20:41,259 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:20:41,260 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 664.2857142857143) internal successors, (4650), 7 states have internal predecessors, (4650), 0 states have call successors, (0), 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 4957
[2023-11-29 04:20:41,272 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:20:41,289 INFO  L225             Difference]: With dead ends: 20925
[2023-11-29 04:20:41,289 INFO  L226             Difference]: Without dead ends: 14175
[2023-11-29 04:20:41,298 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4966 GetRequests, 4954 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:20:41,299 INFO  L413           NwaCegarLoop]: 12360 mSDtfsCounter, 33152 mSDsluCounter, 48655 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33152 SdHoareTripleChecker+Valid, 61015 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 04:20:41,300 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33152 Valid, 61015 Invalid, 47 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 04:20:41,316 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14175 states.
[2023-11-29 04:20:41,428 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14175 to 7428.
[2023-11-29 04:20:41,437 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7428 states, 7427 states have (on average 1.6658139221758448) internal successors, (12372), 7427 states have internal predecessors, (12372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:41,445 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 12372 transitions.
[2023-11-29 04:20:41,446 INFO  L78                 Accepts]: Start accepts. Automaton has 7428 states and 12372 transitions. Word has length 4957
[2023-11-29 04:20:41,452 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:20:41,452 INFO  L495      AbstractCegarLoop]: Abstraction has 7428 states and 12372 transitions.
[2023-11-29 04:20:41,453 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 664.2857142857143) internal successors, (4650), 7 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:41,453 INFO  L276                IsEmpty]: Start isEmpty. Operand 7428 states and 12372 transitions.
[2023-11-29 04:20:41,563 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4959
[2023-11-29 04:20:41,563 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:20:41,567 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:20:41,702 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 04:20:41,767 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:20:41,768 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:20:41,768 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:20:41,770 INFO  L85        PathProgramCache]: Analyzing trace with hash 1205824671, now seen corresponding path program 1 times
[2023-11-29 04:20:41,771 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:20:41,771 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509840624]
[2023-11-29 04:20:41,772 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:41,772 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:20:42,702 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:20:42,703 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079348229]
[2023-11-29 04:20:42,704 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:42,704 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:20:42,704 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:20:42,705 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:20:42,708 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 04:20:54,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:20:54,577 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41781 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:20:54,691 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:20:55,050 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked.
[2023-11-29 04:20:55,050 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:20:55,050 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:20:55,050 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509840624]
[2023-11-29 04:20:55,050 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:20:55,050 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079348229]
[2023-11-29 04:20:55,050 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079348229] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:20:55,050 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:20:55,052 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:20:55,052 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48990459]
[2023-11-29 04:20:55,052 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:20:55,057 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:20:55,057 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:20:55,061 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:20:55,061 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:20:55,062 INFO  L87              Difference]: Start difference. First operand 7428 states and 12372 transitions. Second operand  has 7 states, 7 states have (on average 664.7142857142857) internal successors, (4653), 7 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:55,675 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:20:55,675 INFO  L93              Difference]: Finished difference Result 20927 states and 34856 transitions.
[2023-11-29 04:20:55,675 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:20:55,676 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 664.7142857142857) internal successors, (4653), 7 states have internal predecessors, (4653), 0 states have call successors, (0), 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 4958
[2023-11-29 04:20:55,685 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:20:55,713 INFO  L225             Difference]: With dead ends: 20927
[2023-11-29 04:20:55,714 INFO  L226             Difference]: Without dead ends: 14174
[2023-11-29 04:20:55,724 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4967 GetRequests, 4955 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:20:55,725 INFO  L413           NwaCegarLoop]: 12355 mSDtfsCounter, 33151 mSDsluCounter, 48639 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33151 SdHoareTripleChecker+Valid, 60994 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 04:20:55,725 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33151 Valid, 60994 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 04:20:55,743 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14174 states.
[2023-11-29 04:20:55,882 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14174 to 7430.
[2023-11-29 04:20:55,893 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7430 states, 7429 states have (on average 1.6656346749226005) internal successors, (12374), 7429 states have internal predecessors, (12374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:55,905 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7430 states to 7430 states and 12374 transitions.
[2023-11-29 04:20:55,906 INFO  L78                 Accepts]: Start accepts. Automaton has 7430 states and 12374 transitions. Word has length 4958
[2023-11-29 04:20:55,914 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:20:55,914 INFO  L495      AbstractCegarLoop]: Abstraction has 7430 states and 12374 transitions.
[2023-11-29 04:20:55,916 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 664.7142857142857) internal successors, (4653), 7 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:20:55,916 INFO  L276                IsEmpty]: Start isEmpty. Operand 7430 states and 12374 transitions.
[2023-11-29 04:20:56,140 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4960
[2023-11-29 04:20:56,140 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:20:56,142 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:20:56,279 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 04:20:56,343 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:20:56,343 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:20:56,344 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:20:56,345 INFO  L85        PathProgramCache]: Analyzing trace with hash -1472941289, now seen corresponding path program 1 times
[2023-11-29 04:20:56,346 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:20:56,346 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521366352]
[2023-11-29 04:20:56,346 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:56,347 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:20:57,010 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:20:57,011 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730479067]
[2023-11-29 04:20:57,012 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:57,012 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:20:57,012 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:20:57,013 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:20:57,019 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 04:21:08,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:21:08,786 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41784 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:21:08,910 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:21:09,230 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked.
[2023-11-29 04:21:09,230 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:21:09,231 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:21:09,231 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521366352]
[2023-11-29 04:21:09,231 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:21:09,231 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730479067]
[2023-11-29 04:21:09,231 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [730479067] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:21:09,231 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:21:09,233 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:21:09,233 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742528777]
[2023-11-29 04:21:09,233 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:21:09,239 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:21:09,239 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:21:09,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:21:09,243 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:21:09,244 INFO  L87              Difference]: Start difference. First operand 7430 states and 12374 transitions. Second operand  has 7 states, 7 states have (on average 665.1428571428571) internal successors, (4656), 7 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:09,756 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:21:09,756 INFO  L93              Difference]: Finished difference Result 20933 states and 34862 transitions.
[2023-11-29 04:21:09,756 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:21:09,758 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 665.1428571428571) internal successors, (4656), 7 states have internal predecessors, (4656), 0 states have call successors, (0), 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 4959
[2023-11-29 04:21:09,765 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:21:09,778 INFO  L225             Difference]: With dead ends: 20933
[2023-11-29 04:21:09,778 INFO  L226             Difference]: Without dead ends: 14175
[2023-11-29 04:21:09,787 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4968 GetRequests, 4956 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:21:09,788 INFO  L413           NwaCegarLoop]: 12350 mSDtfsCounter, 33150 mSDsluCounter, 48624 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33150 SdHoareTripleChecker+Valid, 60974 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:21:09,788 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33150 Valid, 60974 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:21:09,801 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14175 states.
[2023-11-29 04:21:09,891 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14175 to 7432.
[2023-11-29 04:21:09,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7432 states, 7431 states have (on average 1.6654555241555646) internal successors, (12376), 7431 states have internal predecessors, (12376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:09,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 12376 transitions.
[2023-11-29 04:21:09,908 INFO  L78                 Accepts]: Start accepts. Automaton has 7432 states and 12376 transitions. Word has length 4959
[2023-11-29 04:21:09,912 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:21:09,912 INFO  L495      AbstractCegarLoop]: Abstraction has 7432 states and 12376 transitions.
[2023-11-29 04:21:09,913 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 665.1428571428571) internal successors, (4656), 7 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:09,913 INFO  L276                IsEmpty]: Start isEmpty. Operand 7432 states and 12376 transitions.
[2023-11-29 04:21:10,140 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4961
[2023-11-29 04:21:10,140 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:21:10,143 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:21:10,288 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 04:21:10,356 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:21:10,357 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:21:10,357 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:21:10,359 INFO  L85        PathProgramCache]: Analyzing trace with hash 1123450053, now seen corresponding path program 1 times
[2023-11-29 04:21:10,359 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:21:10,359 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489468046]
[2023-11-29 04:21:10,360 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:21:10,360 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:21:11,045 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:21:11,045 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357618191]
[2023-11-29 04:21:11,046 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:21:11,047 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:21:11,047 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:21:11,048 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:21:11,049 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 04:21:22,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:21:22,452 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41787 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:21:22,579 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:21:22,909 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked.
[2023-11-29 04:21:22,909 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:21:22,909 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:21:22,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489468046]
[2023-11-29 04:21:22,910 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:21:22,910 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357618191]
[2023-11-29 04:21:22,910 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357618191] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:21:22,910 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:21:22,911 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:21:22,911 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408459560]
[2023-11-29 04:21:22,912 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:21:22,918 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:21:22,919 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:21:22,924 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:21:22,924 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:21:22,926 INFO  L87              Difference]: Start difference. First operand 7432 states and 12376 transitions. Second operand  has 7 states, 7 states have (on average 665.5714285714286) internal successors, (4659), 7 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:23,529 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:21:23,529 INFO  L93              Difference]: Finished difference Result 20939 states and 34868 transitions.
[2023-11-29 04:21:23,529 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:21:23,530 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 665.5714285714286) internal successors, (4659), 7 states have internal predecessors, (4659), 0 states have call successors, (0), 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 4960
[2023-11-29 04:21:23,536 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:21:23,567 INFO  L225             Difference]: With dead ends: 20939
[2023-11-29 04:21:23,567 INFO  L226             Difference]: Without dead ends: 14176
[2023-11-29 04:21:23,575 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4969 GetRequests, 4957 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:21:23,576 INFO  L413           NwaCegarLoop]: 12345 mSDtfsCounter, 33149 mSDsluCounter, 48609 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33149 SdHoareTripleChecker+Valid, 60954 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 04:21:23,576 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33149 Valid, 60954 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 04:21:23,589 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14176 states.
[2023-11-29 04:21:23,680 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14176 to 7434.
[2023-11-29 04:21:23,688 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7434 states, 7433 states have (on average 1.6652764697968518) internal successors, (12378), 7433 states have internal predecessors, (12378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:23,698 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7434 states to 7434 states and 12378 transitions.
[2023-11-29 04:21:23,698 INFO  L78                 Accepts]: Start accepts. Automaton has 7434 states and 12378 transitions. Word has length 4960
[2023-11-29 04:21:23,702 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:21:23,702 INFO  L495      AbstractCegarLoop]: Abstraction has 7434 states and 12378 transitions.
[2023-11-29 04:21:23,703 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 665.5714285714286) internal successors, (4659), 7 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:23,703 INFO  L276                IsEmpty]: Start isEmpty. Operand 7434 states and 12378 transitions.
[2023-11-29 04:21:23,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4962
[2023-11-29 04:21:23,921 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:21:23,924 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:21:24,052 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 04:21:24,124 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:21:24,125 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:21:24,125 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:21:24,128 INFO  L85        PathProgramCache]: Analyzing trace with hash -902688397, now seen corresponding path program 1 times
[2023-11-29 04:21:24,128 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:21:24,128 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704258591]
[2023-11-29 04:21:24,129 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:21:24,129 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:21:24,796 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:21:24,796 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483893564]
[2023-11-29 04:21:24,797 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:21:24,797 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:21:24,797 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:21:24,798 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:21:24,799 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 04:21:35,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:21:35,557 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41791 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:21:35,653 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:21:36,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked.
[2023-11-29 04:21:36,073 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:21:36,073 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:21:36,073 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704258591]
[2023-11-29 04:21:36,073 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:21:36,073 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483893564]
[2023-11-29 04:21:36,074 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483893564] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:21:36,074 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:21:36,075 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:21:36,075 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023763753]
[2023-11-29 04:21:36,075 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:21:36,081 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:21:36,081 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:21:36,087 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:21:36,087 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:21:36,088 INFO  L87              Difference]: Start difference. First operand 7434 states and 12378 transitions. Second operand  has 7 states, 7 states have (on average 666.0) internal successors, (4662), 7 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:36,592 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:21:36,593 INFO  L93              Difference]: Finished difference Result 20945 states and 34874 transitions.
[2023-11-29 04:21:36,593 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:21:36,594 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 666.0) internal successors, (4662), 7 states have internal predecessors, (4662), 0 states have call successors, (0), 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 4961
[2023-11-29 04:21:36,599 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:21:36,609 INFO  L225             Difference]: With dead ends: 20945
[2023-11-29 04:21:36,610 INFO  L226             Difference]: Without dead ends: 14177
[2023-11-29 04:21:36,617 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4970 GetRequests, 4958 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:21:36,618 INFO  L413           NwaCegarLoop]: 12340 mSDtfsCounter, 33148 mSDsluCounter, 48594 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33148 SdHoareTripleChecker+Valid, 60934 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:21:36,618 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33148 Valid, 60934 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:21:36,630 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14177 states.
[2023-11-29 04:21:36,726 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14177 to 7436.
[2023-11-29 04:21:36,733 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7436 states, 7435 states have (on average 1.6650975117686617) internal successors, (12380), 7435 states have internal predecessors, (12380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:36,741 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7436 states to 7436 states and 12380 transitions.
[2023-11-29 04:21:36,741 INFO  L78                 Accepts]: Start accepts. Automaton has 7436 states and 12380 transitions. Word has length 4961
[2023-11-29 04:21:36,744 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:21:36,745 INFO  L495      AbstractCegarLoop]: Abstraction has 7436 states and 12380 transitions.
[2023-11-29 04:21:36,746 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 666.0) internal successors, (4662), 7 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:36,746 INFO  L276                IsEmpty]: Start isEmpty. Operand 7436 states and 12380 transitions.
[2023-11-29 04:21:36,853 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4963
[2023-11-29 04:21:36,854 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:21:36,856 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 04:21:36,980 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 04:21:37,058 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:21:37,059 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:21:37,059 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:21:37,061 INFO  L85        PathProgramCache]: Analyzing trace with hash 273396333, now seen corresponding path program 1 times
[2023-11-29 04:21:37,061 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:21:37,061 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727374554]
[2023-11-29 04:21:37,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:21:37,062 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:21:37,758 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:21:37,758 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539789026]
[2023-11-29 04:21:37,759 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:21:37,759 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:21:37,759 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:21:37,760 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:21:37,761 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 04:21:48,972 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:21:49,245 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41794 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:21:49,337 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:21:49,588 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked.
[2023-11-29 04:21:49,588 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:21:49,588 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:21:49,588 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727374554]
[2023-11-29 04:21:49,588 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:21:49,588 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539789026]
[2023-11-29 04:21:49,588 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [539789026] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:21:49,588 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:21:49,590 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:21:49,590 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286122003]
[2023-11-29 04:21:49,590 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:21:49,594 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:21:49,594 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:21:49,598 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:21:49,598 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:21:49,599 INFO  L87              Difference]: Start difference. First operand 7436 states and 12380 transitions. Second operand  has 7 states, 7 states have (on average 666.4285714285714) internal successors, (4665), 7 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:50,145 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:21:50,146 INFO  L93              Difference]: Finished difference Result 20951 states and 34880 transitions.
[2023-11-29 04:21:50,146 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:21:50,147 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 666.4285714285714) internal successors, (4665), 7 states have internal predecessors, (4665), 0 states have call successors, (0), 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 4962
[2023-11-29 04:21:50,151 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:21:50,163 INFO  L225             Difference]: With dead ends: 20951
[2023-11-29 04:21:50,163 INFO  L226             Difference]: Without dead ends: 14178
[2023-11-29 04:21:50,171 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4971 GetRequests, 4959 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:21:50,172 INFO  L413           NwaCegarLoop]: 12335 mSDtfsCounter, 33147 mSDsluCounter, 48579 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33147 SdHoareTripleChecker+Valid, 60914 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:21:50,172 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33147 Valid, 60914 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:21:50,189 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14178 states.
[2023-11-29 04:21:50,310 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14178 to 7438.
[2023-11-29 04:21:50,317 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7438 states, 7437 states have (on average 1.6649186499932769) internal successors, (12382), 7437 states have internal predecessors, (12382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:50,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7438 states to 7438 states and 12382 transitions.
[2023-11-29 04:21:50,330 INFO  L78                 Accepts]: Start accepts. Automaton has 7438 states and 12382 transitions. Word has length 4962
[2023-11-29 04:21:50,334 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:21:50,334 INFO  L495      AbstractCegarLoop]: Abstraction has 7438 states and 12382 transitions.
[2023-11-29 04:21:50,335 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 666.4285714285714) internal successors, (4665), 7 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:21:50,335 INFO  L276                IsEmpty]: Start isEmpty. Operand 7438 states and 12382 transitions.
[2023-11-29 04:21:50,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4964
[2023-11-29 04:21:50,516 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:21:50,518 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 04:21:50,645 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 04:21:50,719 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-29 04:21:50,719 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:21:50,719 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:21:50,721 INFO  L85        PathProgramCache]: Analyzing trace with hash 559405645, now seen corresponding path program 1 times
[2023-11-29 04:21:50,722 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:21:50,722 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744004408]
[2023-11-29 04:21:50,723 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:21:50,723 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:21:51,353 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:21:51,353 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077289339]
[2023-11-29 04:21:51,354 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:21:51,354 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:21:51,354 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:21:51,355 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:21:51,357 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 04:22:02,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:22:03,125 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41797 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:22:03,217 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:22:03,445 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked.
[2023-11-29 04:22:03,445 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:22:03,445 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:22:03,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744004408]
[2023-11-29 04:22:03,445 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:22:03,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077289339]
[2023-11-29 04:22:03,445 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077289339] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:22:03,445 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:22:03,446 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:22:03,446 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333441808]
[2023-11-29 04:22:03,446 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:22:03,449 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:22:03,450 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:22:03,453 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:22:03,453 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:22:03,454 INFO  L87              Difference]: Start difference. First operand 7438 states and 12382 transitions. Second operand  has 7 states, 7 states have (on average 666.8571428571429) internal successors, (4668), 7 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:04,098 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:22:04,098 INFO  L93              Difference]: Finished difference Result 20957 states and 34886 transitions.
[2023-11-29 04:22:04,099 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:22:04,100 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 666.8571428571429) internal successors, (4668), 7 states have internal predecessors, (4668), 0 states have call successors, (0), 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 4963
[2023-11-29 04:22:04,103 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:22:04,114 INFO  L225             Difference]: With dead ends: 20957
[2023-11-29 04:22:04,114 INFO  L226             Difference]: Without dead ends: 14179
[2023-11-29 04:22:04,120 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4972 GetRequests, 4960 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:22:04,120 INFO  L413           NwaCegarLoop]: 12330 mSDtfsCounter, 33146 mSDsluCounter, 48564 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33146 SdHoareTripleChecker+Valid, 60894 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:22:04,120 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33146 Valid, 60894 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:22:04,130 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14179 states.
[2023-11-29 04:22:04,219 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14179 to 7440.
[2023-11-29 04:22:04,227 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7440 states, 7439 states have (on average 1.6647398843930636) internal successors, (12384), 7439 states have internal predecessors, (12384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:04,239 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7440 states to 7440 states and 12384 transitions.
[2023-11-29 04:22:04,239 INFO  L78                 Accepts]: Start accepts. Automaton has 7440 states and 12384 transitions. Word has length 4963
[2023-11-29 04:22:04,243 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:22:04,243 INFO  L495      AbstractCegarLoop]: Abstraction has 7440 states and 12384 transitions.
[2023-11-29 04:22:04,244 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 666.8571428571429) internal successors, (4668), 7 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:04,244 INFO  L276                IsEmpty]: Start isEmpty. Operand 7440 states and 12384 transitions.
[2023-11-29 04:22:04,353 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4965
[2023-11-29 04:22:04,353 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:22:04,355 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:04,471 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 04:22:04,556 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 04:22:04,556 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:22:04,556 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:22:04,558 INFO  L85        PathProgramCache]: Analyzing trace with hash -1722259821, now seen corresponding path program 1 times
[2023-11-29 04:22:04,558 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:22:04,558 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464751416]
[2023-11-29 04:22:04,558 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:04,558 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:22:05,262 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:22:05,262 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989521434]
[2023-11-29 04:22:05,263 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:05,263 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:22:05,263 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:22:05,264 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:22:05,265 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 04:22:16,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:22:16,531 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41800 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:22:16,618 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:22:16,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked.
[2023-11-29 04:22:16,846 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:22:16,846 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:22:16,847 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464751416]
[2023-11-29 04:22:16,847 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:22:16,847 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989521434]
[2023-11-29 04:22:16,847 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [989521434] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:22:16,847 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:22:16,848 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:22:16,849 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496050973]
[2023-11-29 04:22:16,849 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:22:16,852 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:22:16,852 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:22:16,857 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:22:16,857 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:22:16,858 INFO  L87              Difference]: Start difference. First operand 7440 states and 12384 transitions. Second operand  has 7 states, 7 states have (on average 667.2857142857143) internal successors, (4671), 7 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:17,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:22:17,447 INFO  L93              Difference]: Finished difference Result 20963 states and 34892 transitions.
[2023-11-29 04:22:17,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:22:17,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 667.2857142857143) internal successors, (4671), 7 states have internal predecessors, (4671), 0 states have call successors, (0), 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 4964
[2023-11-29 04:22:17,453 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:22:17,464 INFO  L225             Difference]: With dead ends: 20963
[2023-11-29 04:22:17,464 INFO  L226             Difference]: Without dead ends: 14180
[2023-11-29 04:22:17,469 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4973 GetRequests, 4961 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:22:17,470 INFO  L413           NwaCegarLoop]: 12325 mSDtfsCounter, 33145 mSDsluCounter, 48549 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33145 SdHoareTripleChecker+Valid, 60874 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:22:17,470 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33145 Valid, 60874 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:22:17,480 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14180 states.
[2023-11-29 04:22:17,555 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14180 to 7442.
[2023-11-29 04:22:17,563 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7442 states, 7441 states have (on average 1.6645612148904718) internal successors, (12386), 7441 states have internal predecessors, (12386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:17,573 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7442 states to 7442 states and 12386 transitions.
[2023-11-29 04:22:17,574 INFO  L78                 Accepts]: Start accepts. Automaton has 7442 states and 12386 transitions. Word has length 4964
[2023-11-29 04:22:17,577 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:22:17,577 INFO  L495      AbstractCegarLoop]: Abstraction has 7442 states and 12386 transitions.
[2023-11-29 04:22:17,578 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 667.2857142857143) internal successors, (4671), 7 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:17,578 INFO  L276                IsEmpty]: Start isEmpty. Operand 7442 states and 12386 transitions.
[2023-11-29 04:22:17,743 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4966
[2023-11-29 04:22:17,743 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:22:17,746 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:17,866 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 04:22:17,948 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 04:22:17,949 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:22:17,949 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:22:17,950 INFO  L85        PathProgramCache]: Analyzing trace with hash 906592681, now seen corresponding path program 1 times
[2023-11-29 04:22:17,950 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:22:17,951 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81191717]
[2023-11-29 04:22:17,951 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:17,951 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:22:18,579 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:22:18,579 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709297483]
[2023-11-29 04:22:18,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:18,580 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:22:18,580 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:22:18,581 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:22:18,582 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 04:22:29,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:22:29,557 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41804 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:22:29,641 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:22:29,887 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked.
[2023-11-29 04:22:29,887 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:22:29,887 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:22:29,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81191717]
[2023-11-29 04:22:29,887 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:22:29,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709297483]
[2023-11-29 04:22:29,887 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709297483] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:22:29,887 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:22:29,889 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:22:29,889 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170825103]
[2023-11-29 04:22:29,889 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:22:29,892 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:22:29,893 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:22:29,896 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:22:29,896 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:22:29,897 INFO  L87              Difference]: Start difference. First operand 7442 states and 12386 transitions. Second operand  has 7 states, 7 states have (on average 667.7142857142857) internal successors, (4674), 7 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:30,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:22:30,378 INFO  L93              Difference]: Finished difference Result 20969 states and 34898 transitions.
[2023-11-29 04:22:30,379 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:22:30,380 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 667.7142857142857) internal successors, (4674), 7 states have internal predecessors, (4674), 0 states have call successors, (0), 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 4965
[2023-11-29 04:22:30,384 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:22:30,394 INFO  L225             Difference]: With dead ends: 20969
[2023-11-29 04:22:30,395 INFO  L226             Difference]: Without dead ends: 14181
[2023-11-29 04:22:30,400 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4974 GetRequests, 4962 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:22:30,400 INFO  L413           NwaCegarLoop]: 12320 mSDtfsCounter, 33144 mSDsluCounter, 48534 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33144 SdHoareTripleChecker+Valid, 60854 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:22:30,401 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33144 Valid, 60854 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:22:30,411 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14181 states.
[2023-11-29 04:22:30,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14181 to 7444.
[2023-11-29 04:22:30,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7444 states, 7443 states have (on average 1.6643826414080345) internal successors, (12388), 7443 states have internal predecessors, (12388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:30,619 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7444 states to 7444 states and 12388 transitions.
[2023-11-29 04:22:30,619 INFO  L78                 Accepts]: Start accepts. Automaton has 7444 states and 12388 transitions. Word has length 4965
[2023-11-29 04:22:30,621 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:22:30,621 INFO  L495      AbstractCegarLoop]: Abstraction has 7444 states and 12388 transitions.
[2023-11-29 04:22:30,622 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 667.7142857142857) internal successors, (4674), 7 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:30,622 INFO  L276                IsEmpty]: Start isEmpty. Operand 7444 states and 12388 transitions.
[2023-11-29 04:22:30,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4967
[2023-11-29 04:22:30,723 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:22:30,725 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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[2023-11-29 04:22:30,837 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-11-29 04:22:30,926 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-29 04:22:30,926 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:22:30,926 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:22:30,928 INFO  L85        PathProgramCache]: Analyzing trace with hash -635056837, now seen corresponding path program 1 times
[2023-11-29 04:22:30,928 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:22:30,928 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577516092]
[2023-11-29 04:22:30,928 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:30,928 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:22:31,519 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:22:31,519 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658811868]
[2023-11-29 04:22:31,520 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:31,520 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:22:31,520 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:22:31,521 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:22:31,522 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 04:22:42,091 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:22:42,341 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41807 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:22:42,435 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:22:42,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked.
[2023-11-29 04:22:42,819 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:22:42,819 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:22:42,819 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577516092]
[2023-11-29 04:22:42,819 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:22:42,820 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658811868]
[2023-11-29 04:22:42,820 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [658811868] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:22:42,820 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:22:42,821 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:22:42,821 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465751125]
[2023-11-29 04:22:42,821 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:22:42,824 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:22:42,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:22:42,828 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:22:42,828 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:22:42,829 INFO  L87              Difference]: Start difference. First operand 7444 states and 12388 transitions. Second operand  has 7 states, 7 states have (on average 668.1428571428571) internal successors, (4677), 7 states have internal predecessors, (4677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:43,294 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:22:43,294 INFO  L93              Difference]: Finished difference Result 20975 states and 34904 transitions.
[2023-11-29 04:22:43,294 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:22:43,296 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 668.1428571428571) internal successors, (4677), 7 states have internal predecessors, (4677), 0 states have call successors, (0), 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 4966
[2023-11-29 04:22:43,299 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:22:43,308 INFO  L225             Difference]: With dead ends: 20975
[2023-11-29 04:22:43,309 INFO  L226             Difference]: Without dead ends: 14182
[2023-11-29 04:22:43,314 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4975 GetRequests, 4963 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:22:43,314 INFO  L413           NwaCegarLoop]: 12315 mSDtfsCounter, 33143 mSDsluCounter, 48519 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33143 SdHoareTripleChecker+Valid, 60834 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:22:43,315 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33143 Valid, 60834 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:22:43,325 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14182 states.
[2023-11-29 04:22:43,390 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14182 to 7446.
[2023-11-29 04:22:43,396 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7446 states, 7445 states have (on average 1.664204163868368) internal successors, (12390), 7445 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:43,403 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7446 states to 7446 states and 12390 transitions.
[2023-11-29 04:22:43,403 INFO  L78                 Accepts]: Start accepts. Automaton has 7446 states and 12390 transitions. Word has length 4966
[2023-11-29 04:22:43,406 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:22:43,406 INFO  L495      AbstractCegarLoop]: Abstraction has 7446 states and 12390 transitions.
[2023-11-29 04:22:43,407 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 668.1428571428571) internal successors, (4677), 7 states have internal predecessors, (4677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:43,407 INFO  L276                IsEmpty]: Start isEmpty. Operand 7446 states and 12390 transitions.
[2023-11-29 04:22:43,508 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4968
[2023-11-29 04:22:43,508 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:22:43,510 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:22:43,625 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 04:22:43,711 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 04:22:43,711 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:22:43,711 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:22:43,714 INFO  L85        PathProgramCache]: Analyzing trace with hash -434043261, now seen corresponding path program 1 times
[2023-11-29 04:22:43,714 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:22:43,714 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631542968]
[2023-11-29 04:22:43,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:43,715 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:22:44,406 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:22:44,406 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681381635]
[2023-11-29 04:22:44,407 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:44,407 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:22:44,407 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:22:44,408 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:22:44,409 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 04:22:55,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:22:55,655 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41810 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:22:55,740 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:22:55,973 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2023-11-29 04:22:55,973 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:22:55,973 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:22:55,974 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631542968]
[2023-11-29 04:22:55,974 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:22:55,974 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681381635]
[2023-11-29 04:22:55,974 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [681381635] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:22:55,974 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:22:55,975 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:22:55,976 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92071851]
[2023-11-29 04:22:55,976 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:22:55,980 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:22:55,980 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:22:55,985 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:22:55,985 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:22:55,986 INFO  L87              Difference]: Start difference. First operand 7446 states and 12390 transitions. Second operand  has 7 states, 7 states have (on average 668.5714285714286) internal successors, (4680), 7 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:56,445 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:22:56,445 INFO  L93              Difference]: Finished difference Result 20981 states and 34910 transitions.
[2023-11-29 04:22:56,445 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:22:56,446 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 668.5714285714286) internal successors, (4680), 7 states have internal predecessors, (4680), 0 states have call successors, (0), 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 4967
[2023-11-29 04:22:56,449 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:22:56,459 INFO  L225             Difference]: With dead ends: 20981
[2023-11-29 04:22:56,459 INFO  L226             Difference]: Without dead ends: 14183
[2023-11-29 04:22:56,464 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4976 GetRequests, 4964 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:22:56,464 INFO  L413           NwaCegarLoop]: 12310 mSDtfsCounter, 33142 mSDsluCounter, 48504 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33142 SdHoareTripleChecker+Valid, 60814 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:22:56,464 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33142 Valid, 60814 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:22:56,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14183 states.
[2023-11-29 04:22:56,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14183 to 7448.
[2023-11-29 04:22:56,567 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7448 states, 7447 states have (on average 1.6640257821941722) internal successors, (12392), 7447 states have internal predecessors, (12392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:56,577 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7448 states to 7448 states and 12392 transitions.
[2023-11-29 04:22:56,578 INFO  L78                 Accepts]: Start accepts. Automaton has 7448 states and 12392 transitions. Word has length 4967
[2023-11-29 04:22:56,581 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:22:56,581 INFO  L495      AbstractCegarLoop]: Abstraction has 7448 states and 12392 transitions.
[2023-11-29 04:22:56,582 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 668.5714285714286) internal successors, (4680), 7 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:22:56,582 INFO  L276                IsEmpty]: Start isEmpty. Operand 7448 states and 12392 transitions.
[2023-11-29 04:22:56,772 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4969
[2023-11-29 04:22:56,772 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:22:56,774 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:56,889 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 04:22:56,975 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 04:22:56,975 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:22:56,975 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:22:56,977 INFO  L85        PathProgramCache]: Analyzing trace with hash 1119069537, now seen corresponding path program 1 times
[2023-11-29 04:22:56,977 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:22:56,977 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663502375]
[2023-11-29 04:22:56,978 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:56,978 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:22:57,573 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:22:57,573 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942907061]
[2023-11-29 04:22:57,574 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:57,574 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:22:57,574 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:22:57,575 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:22:57,576 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 04:23:08,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:23:08,559 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41813 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:23:08,681 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:23:08,909 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked.
[2023-11-29 04:23:08,909 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:23:08,909 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:23:08,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663502375]
[2023-11-29 04:23:08,909 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:23:08,910 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942907061]
[2023-11-29 04:23:08,910 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [942907061] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:23:08,910 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:23:08,911 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:23:08,911 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055319664]
[2023-11-29 04:23:08,911 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:23:08,914 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:23:08,914 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:23:08,917 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:23:08,917 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:23:08,918 INFO  L87              Difference]: Start difference. First operand 7448 states and 12392 transitions. Second operand  has 7 states, 7 states have (on average 669.0) internal successors, (4683), 7 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:09,389 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:23:09,389 INFO  L93              Difference]: Finished difference Result 20987 states and 34916 transitions.
[2023-11-29 04:23:09,389 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:23:09,391 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 669.0) internal successors, (4683), 7 states have internal predecessors, (4683), 0 states have call successors, (0), 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 4968
[2023-11-29 04:23:09,504 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:23:09,514 INFO  L225             Difference]: With dead ends: 20987
[2023-11-29 04:23:09,514 INFO  L226             Difference]: Without dead ends: 14184
[2023-11-29 04:23:09,517 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4977 GetRequests, 4965 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:23:09,517 INFO  L413           NwaCegarLoop]: 12305 mSDtfsCounter, 33141 mSDsluCounter, 48489 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33141 SdHoareTripleChecker+Valid, 60794 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:23:09,517 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33141 Valid, 60794 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:23:09,527 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14184 states.
[2023-11-29 04:23:09,584 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14184 to 7450.
[2023-11-29 04:23:09,590 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7450 states, 7449 states have (on average 1.6638474963082293) internal successors, (12394), 7449 states have internal predecessors, (12394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:09,597 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7450 states to 7450 states and 12394 transitions.
[2023-11-29 04:23:09,597 INFO  L78                 Accepts]: Start accepts. Automaton has 7450 states and 12394 transitions. Word has length 4968
[2023-11-29 04:23:09,600 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:23:09,600 INFO  L495      AbstractCegarLoop]: Abstraction has 7450 states and 12394 transitions.
[2023-11-29 04:23:09,601 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 669.0) internal successors, (4683), 7 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:09,601 INFO  L276                IsEmpty]: Start isEmpty. Operand 7450 states and 12394 transitions.
[2023-11-29 04:23:09,701 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4970
[2023-11-29 04:23:09,701 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:23:09,702 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 04:23:09,819 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 04:23:09,903 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 04:23:09,903 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:23:09,903 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:23:09,904 INFO  L85        PathProgramCache]: Analyzing trace with hash 1336932063, now seen corresponding path program 1 times
[2023-11-29 04:23:09,904 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:23:09,904 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854187485]
[2023-11-29 04:23:09,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:23:09,905 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:23:10,493 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:23:10,494 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151930350]
[2023-11-29 04:23:10,494 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:23:10,494 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:23:10,495 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:23:10,495 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:23:10,496 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 04:23:21,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:23:21,802 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41817 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:23:21,887 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:23:22,116 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked.
[2023-11-29 04:23:22,117 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:23:22,117 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:23:22,117 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854187485]
[2023-11-29 04:23:22,117 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:23:22,117 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151930350]
[2023-11-29 04:23:22,117 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151930350] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:23:22,117 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:23:22,119 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:23:22,119 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109677496]
[2023-11-29 04:23:22,119 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:23:22,122 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:23:22,122 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:23:22,125 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:23:22,126 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:23:22,127 INFO  L87              Difference]: Start difference. First operand 7450 states and 12394 transitions. Second operand  has 7 states, 7 states have (on average 669.4285714285714) internal successors, (4686), 7 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:22,751 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:23:22,751 INFO  L93              Difference]: Finished difference Result 20993 states and 34922 transitions.
[2023-11-29 04:23:22,751 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:23:22,752 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 669.4285714285714) internal successors, (4686), 7 states have internal predecessors, (4686), 0 states have call successors, (0), 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 4969
[2023-11-29 04:23:22,755 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:23:22,764 INFO  L225             Difference]: With dead ends: 20993
[2023-11-29 04:23:22,764 INFO  L226             Difference]: Without dead ends: 14185
[2023-11-29 04:23:22,768 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4978 GetRequests, 4966 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:23:22,768 INFO  L413           NwaCegarLoop]: 12300 mSDtfsCounter, 33140 mSDsluCounter, 48474 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33140 SdHoareTripleChecker+Valid, 60774 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:23:22,768 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33140 Valid, 60774 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:23:22,778 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14185 states.
[2023-11-29 04:23:22,845 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14185 to 7452.
[2023-11-29 04:23:22,851 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7452 states, 7451 states have (on average 1.663669306133405) internal successors, (12396), 7451 states have internal predecessors, (12396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:22,859 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 12396 transitions.
[2023-11-29 04:23:22,859 INFO  L78                 Accepts]: Start accepts. Automaton has 7452 states and 12396 transitions. Word has length 4969
[2023-11-29 04:23:22,862 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:23:22,862 INFO  L495      AbstractCegarLoop]: Abstraction has 7452 states and 12396 transitions.
[2023-11-29 04:23:22,862 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 669.4285714285714) internal successors, (4686), 7 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:22,863 INFO  L276                IsEmpty]: Start isEmpty. Operand 7452 states and 12396 transitions.
[2023-11-29 04:23:22,963 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4971
[2023-11-29 04:23:22,963 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:23:22,964 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:23,087 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 04:23:23,165 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 04:23:23,165 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:23:23,165 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:23:23,166 INFO  L85        PathProgramCache]: Analyzing trace with hash -1917240055, now seen corresponding path program 1 times
[2023-11-29 04:23:23,166 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:23:23,166 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912582639]
[2023-11-29 04:23:23,167 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:23:23,167 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:23:23,787 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:23:23,788 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118474060]
[2023-11-29 04:23:23,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:23:23,789 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:23:23,789 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:23:23,790 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:23:23,791 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 04:23:34,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:23:35,032 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41820 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:23:35,120 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:23:35,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked.
[2023-11-29 04:23:35,374 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:23:35,374 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:23:35,374 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912582639]
[2023-11-29 04:23:35,374 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:23:35,374 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118474060]
[2023-11-29 04:23:35,374 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118474060] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:23:35,374 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:23:35,375 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:23:35,375 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606992612]
[2023-11-29 04:23:35,375 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:23:35,378 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:23:35,378 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:23:35,381 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:23:35,381 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:23:35,382 INFO  L87              Difference]: Start difference. First operand 7452 states and 12396 transitions. Second operand  has 7 states, 7 states have (on average 669.8571428571429) internal successors, (4689), 7 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:35,861 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:23:35,861 INFO  L93              Difference]: Finished difference Result 20999 states and 34928 transitions.
[2023-11-29 04:23:35,861 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:23:35,862 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 669.8571428571429) internal successors, (4689), 7 states have internal predecessors, (4689), 0 states have call successors, (0), 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 4970
[2023-11-29 04:23:35,866 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:23:35,876 INFO  L225             Difference]: With dead ends: 20999
[2023-11-29 04:23:35,876 INFO  L226             Difference]: Without dead ends: 14186
[2023-11-29 04:23:35,882 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4979 GetRequests, 4967 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:23:35,882 INFO  L413           NwaCegarLoop]: 12295 mSDtfsCounter, 33139 mSDsluCounter, 48459 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33139 SdHoareTripleChecker+Valid, 60754 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:23:35,883 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33139 Valid, 60754 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:23:35,894 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14186 states.
[2023-11-29 04:23:36,075 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14186 to 7454.
[2023-11-29 04:23:36,082 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7454 states, 7453 states have (on average 1.6634912115926472) internal successors, (12398), 7453 states have internal predecessors, (12398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:36,093 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7454 states to 7454 states and 12398 transitions.
[2023-11-29 04:23:36,093 INFO  L78                 Accepts]: Start accepts. Automaton has 7454 states and 12398 transitions. Word has length 4970
[2023-11-29 04:23:36,095 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:23:36,096 INFO  L495      AbstractCegarLoop]: Abstraction has 7454 states and 12398 transitions.
[2023-11-29 04:23:36,096 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 669.8571428571429) internal successors, (4689), 7 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:36,096 INFO  L276                IsEmpty]: Start isEmpty. Operand 7454 states and 12398 transitions.
[2023-11-29 04:23:36,202 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4972
[2023-11-29 04:23:36,202 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:23:36,203 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:23:36,327 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 04:23:36,404 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 04:23:36,404 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:23:36,404 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:23:36,405 INFO  L85        PathProgramCache]: Analyzing trace with hash -1985103943, now seen corresponding path program 1 times
[2023-11-29 04:23:36,405 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:23:36,405 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173896780]
[2023-11-29 04:23:36,406 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:23:36,407 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:23:37,196 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:23:37,197 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072915045]
[2023-11-29 04:23:37,197 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:23:37,198 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:23:37,198 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:23:37,198 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:23:37,200 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 04:23:48,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:23:48,329 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41823 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:23:48,414 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:23:48,659 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked.
[2023-11-29 04:23:48,659 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:23:48,659 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:23:48,659 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173896780]
[2023-11-29 04:23:48,659 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:23:48,660 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072915045]
[2023-11-29 04:23:48,660 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072915045] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:23:48,660 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:23:48,661 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:23:48,661 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716620285]
[2023-11-29 04:23:48,661 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:23:48,663 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:23:48,663 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:23:48,666 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:23:48,667 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:23:48,668 INFO  L87              Difference]: Start difference. First operand 7454 states and 12398 transitions. Second operand  has 7 states, 7 states have (on average 670.2857142857143) internal successors, (4692), 7 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:49,156 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:23:49,157 INFO  L93              Difference]: Finished difference Result 21005 states and 34934 transitions.
[2023-11-29 04:23:49,157 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:23:49,158 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 670.2857142857143) internal successors, (4692), 7 states have internal predecessors, (4692), 0 states have call successors, (0), 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 4971
[2023-11-29 04:23:49,161 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:23:49,171 INFO  L225             Difference]: With dead ends: 21005
[2023-11-29 04:23:49,171 INFO  L226             Difference]: Without dead ends: 14187
[2023-11-29 04:23:49,177 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4980 GetRequests, 4968 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:23:49,177 INFO  L413           NwaCegarLoop]: 12290 mSDtfsCounter, 33138 mSDsluCounter, 48444 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33138 SdHoareTripleChecker+Valid, 60734 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:23:49,178 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33138 Valid, 60734 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:23:49,190 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14187 states.
[2023-11-29 04:23:49,258 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14187 to 7456.
[2023-11-29 04:23:49,264 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7456 states, 7455 states have (on average 1.6633132126089873) internal successors, (12400), 7455 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:49,272 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 12400 transitions.
[2023-11-29 04:23:49,272 INFO  L78                 Accepts]: Start accepts. Automaton has 7456 states and 12400 transitions. Word has length 4971
[2023-11-29 04:23:49,275 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:23:49,275 INFO  L495      AbstractCegarLoop]: Abstraction has 7456 states and 12400 transitions.
[2023-11-29 04:23:49,276 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 670.2857142857143) internal successors, (4692), 7 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:23:49,276 INFO  L276                IsEmpty]: Start isEmpty. Operand 7456 states and 12400 transitions.
[2023-11-29 04:23:49,468 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4973
[2023-11-29 04:23:49,469 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:23:49,470 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:23:49,594 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 04:23:49,670 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 04:23:49,670 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:23:49,671 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:23:49,672 INFO  L85        PathProgramCache]: Analyzing trace with hash 1699985711, now seen corresponding path program 1 times
[2023-11-29 04:23:49,672 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:23:49,672 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858774415]
[2023-11-29 04:23:49,673 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:23:49,673 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:23:50,448 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:23:50,449 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184841907]
[2023-11-29 04:23:50,449 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:23:50,450 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:23:50,450 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:23:50,451 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:23:50,451 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 04:24:01,414 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:24:01,698 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41826 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:24:01,967 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:24:02,189 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked.
[2023-11-29 04:24:02,190 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:24:02,190 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:24:02,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858774415]
[2023-11-29 04:24:02,190 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:24:02,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184841907]
[2023-11-29 04:24:02,190 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [184841907] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:24:02,190 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:24:02,192 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:24:02,192 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732044115]
[2023-11-29 04:24:02,192 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:24:02,194 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:24:02,194 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:24:02,196 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:24:02,197 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:24:02,198 INFO  L87              Difference]: Start difference. First operand 7456 states and 12400 transitions. Second operand  has 7 states, 7 states have (on average 670.7142857142857) internal successors, (4695), 7 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:02,700 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:24:02,700 INFO  L93              Difference]: Finished difference Result 21011 states and 34940 transitions.
[2023-11-29 04:24:02,701 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:24:02,701 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 670.7142857142857) internal successors, (4695), 7 states have internal predecessors, (4695), 0 states have call successors, (0), 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 4972
[2023-11-29 04:24:02,705 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:24:02,715 INFO  L225             Difference]: With dead ends: 21011
[2023-11-29 04:24:02,716 INFO  L226             Difference]: Without dead ends: 14188
[2023-11-29 04:24:02,721 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4981 GetRequests, 4969 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:24:02,722 INFO  L413           NwaCegarLoop]: 12285 mSDtfsCounter, 33137 mSDsluCounter, 48429 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33137 SdHoareTripleChecker+Valid, 60714 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:24:02,722 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33137 Valid, 60714 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:24:02,733 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14188 states.
[2023-11-29 04:24:02,801 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14188 to 7458.
[2023-11-29 04:24:02,807 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7458 states, 7457 states have (on average 1.6631353091055385) internal successors, (12402), 7457 states have internal predecessors, (12402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:02,815 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 12402 transitions.
[2023-11-29 04:24:02,816 INFO  L78                 Accepts]: Start accepts. Automaton has 7458 states and 12402 transitions. Word has length 4972
[2023-11-29 04:24:02,818 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:24:02,819 INFO  L495      AbstractCegarLoop]: Abstraction has 7458 states and 12402 transitions.
[2023-11-29 04:24:02,820 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 670.7142857142857) internal successors, (4695), 7 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:02,820 INFO  L276                IsEmpty]: Start isEmpty. Operand 7458 states and 12402 transitions.
[2023-11-29 04:24:02,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4974
[2023-11-29 04:24:02,929 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:24:02,930 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 04:24:03,055 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 04:24:03,131 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:03,131 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:24:03,131 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:24:03,133 INFO  L85        PathProgramCache]: Analyzing trace with hash 1770189077, now seen corresponding path program 1 times
[2023-11-29 04:24:03,133 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:24:03,133 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097856911]
[2023-11-29 04:24:03,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:03,133 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:24:03,971 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:24:03,972 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819931356]
[2023-11-29 04:24:03,973 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:03,973 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:03,973 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:24:03,974 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:24:03,976 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 04:24:14,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:24:14,643 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41830 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:24:14,719 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:24:14,937 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2023-11-29 04:24:14,937 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:24:14,937 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:24:14,938 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097856911]
[2023-11-29 04:24:14,938 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:24:14,938 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819931356]
[2023-11-29 04:24:14,938 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [819931356] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:24:14,938 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:24:14,939 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:24:14,939 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010963479]
[2023-11-29 04:24:14,939 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:24:14,941 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:24:14,941 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:24:14,943 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:24:14,943 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:24:14,944 INFO  L87              Difference]: Start difference. First operand 7458 states and 12402 transitions. Second operand  has 7 states, 7 states have (on average 671.1428571428571) internal successors, (4698), 7 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:15,497 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:24:15,497 INFO  L93              Difference]: Finished difference Result 21017 states and 34946 transitions.
[2023-11-29 04:24:15,497 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:24:15,498 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 671.1428571428571) internal successors, (4698), 7 states have internal predecessors, (4698), 0 states have call successors, (0), 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 4973
[2023-11-29 04:24:15,501 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:24:15,511 INFO  L225             Difference]: With dead ends: 21017
[2023-11-29 04:24:15,511 INFO  L226             Difference]: Without dead ends: 14189
[2023-11-29 04:24:15,516 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4982 GetRequests, 4970 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:24:15,516 INFO  L413           NwaCegarLoop]: 12280 mSDtfsCounter, 33136 mSDsluCounter, 48414 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33136 SdHoareTripleChecker+Valid, 60694 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 04:24:15,517 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33136 Valid, 60694 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 04:24:15,528 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14189 states.
[2023-11-29 04:24:15,589 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14189 to 7460.
[2023-11-29 04:24:15,595 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7460 states, 7459 states have (on average 1.6629575010054967) internal successors, (12404), 7459 states have internal predecessors, (12404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:15,602 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 12404 transitions.
[2023-11-29 04:24:15,602 INFO  L78                 Accepts]: Start accepts. Automaton has 7460 states and 12404 transitions. Word has length 4973
[2023-11-29 04:24:15,604 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:24:15,605 INFO  L495      AbstractCegarLoop]: Abstraction has 7460 states and 12404 transitions.
[2023-11-29 04:24:15,605 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 671.1428571428571) internal successors, (4698), 7 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:15,605 INFO  L276                IsEmpty]: Start isEmpty. Operand 7460 states and 12404 transitions.
[2023-11-29 04:24:15,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4975
[2023-11-29 04:24:15,705 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:24:15,706 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 04:24:15,816 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 04:24:15,906 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:15,907 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:24:15,907 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:24:15,908 INFO  L85        PathProgramCache]: Analyzing trace with hash 345080279, now seen corresponding path program 1 times
[2023-11-29 04:24:15,908 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:24:15,908 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888340403]
[2023-11-29 04:24:15,909 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:15,909 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:24:16,528 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:24:16,528 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739723906]
[2023-11-29 04:24:16,529 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:16,529 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:16,530 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:24:16,530 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:24:16,531 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 04:24:27,187 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:24:27,430 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41833 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:24:27,506 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:24:27,720 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked.
[2023-11-29 04:24:27,721 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:24:27,721 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:24:27,721 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888340403]
[2023-11-29 04:24:27,721 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:24:27,721 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739723906]
[2023-11-29 04:24:27,721 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [739723906] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:24:27,721 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:24:27,722 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:24:27,722 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974215743]
[2023-11-29 04:24:27,722 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:24:27,724 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:24:27,724 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:24:27,726 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:24:27,726 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:24:27,727 INFO  L87              Difference]: Start difference. First operand 7460 states and 12404 transitions. Second operand  has 7 states, 7 states have (on average 671.5714285714286) internal successors, (4701), 7 states have internal predecessors, (4701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:28,204 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:24:28,204 INFO  L93              Difference]: Finished difference Result 21023 states and 34952 transitions.
[2023-11-29 04:24:28,204 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:24:28,206 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 671.5714285714286) internal successors, (4701), 7 states have internal predecessors, (4701), 0 states have call successors, (0), 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 4974
[2023-11-29 04:24:28,209 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:24:28,221 INFO  L225             Difference]: With dead ends: 21023
[2023-11-29 04:24:28,221 INFO  L226             Difference]: Without dead ends: 14190
[2023-11-29 04:24:28,227 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4983 GetRequests, 4971 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:24:28,227 INFO  L413           NwaCegarLoop]: 12275 mSDtfsCounter, 33135 mSDsluCounter, 48399 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33135 SdHoareTripleChecker+Valid, 60674 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:24:28,227 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33135 Valid, 60674 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:24:28,237 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14190 states.
[2023-11-29 04:24:28,304 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14190 to 7462.
[2023-11-29 04:24:28,310 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7462 states, 7461 states have (on average 1.6627797882321405) internal successors, (12406), 7461 states have internal predecessors, (12406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:28,318 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 12406 transitions.
[2023-11-29 04:24:28,318 INFO  L78                 Accepts]: Start accepts. Automaton has 7462 states and 12406 transitions. Word has length 4974
[2023-11-29 04:24:28,320 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:24:28,321 INFO  L495      AbstractCegarLoop]: Abstraction has 7462 states and 12406 transitions.
[2023-11-29 04:24:28,322 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 671.5714285714286) internal successors, (4701), 7 states have internal predecessors, (4701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:28,322 INFO  L276                IsEmpty]: Start isEmpty. Operand 7462 states and 12406 transitions.
[2023-11-29 04:24:28,524 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4976
[2023-11-29 04:24:28,525 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:24:28,526 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2023-11-29 04:24:28,637 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2023-11-29 04:24:28,726 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:28,726 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:24:28,726 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:24:28,727 INFO  L85        PathProgramCache]: Analyzing trace with hash -1738838545, now seen corresponding path program 1 times
[2023-11-29 04:24:28,727 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:24:28,727 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185180103]
[2023-11-29 04:24:28,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:28,728 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:24:29,405 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:24:29,406 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191424396]
[2023-11-29 04:24:29,407 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:29,407 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:29,407 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:24:29,408 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:24:29,410 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 04:24:40,132 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:24:40,388 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41836 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:24:40,488 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:24:40,881 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2023-11-29 04:24:40,882 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:24:40,882 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:24:40,882 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185180103]
[2023-11-29 04:24:40,882 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:24:40,882 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191424396]
[2023-11-29 04:24:40,882 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [191424396] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:24:40,882 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:24:40,884 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:24:40,884 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515283354]
[2023-11-29 04:24:40,884 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:24:40,887 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:24:40,887 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:24:40,889 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:24:40,889 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:24:40,890 INFO  L87              Difference]: Start difference. First operand 7462 states and 12406 transitions. Second operand  has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:41,361 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:24:41,362 INFO  L93              Difference]: Finished difference Result 21029 states and 34958 transitions.
[2023-11-29 04:24:41,362 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:24:41,363 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 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 4975
[2023-11-29 04:24:41,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:24:41,377 INFO  L225             Difference]: With dead ends: 21029
[2023-11-29 04:24:41,377 INFO  L226             Difference]: Without dead ends: 14191
[2023-11-29 04:24:41,382 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4984 GetRequests, 4972 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:24:41,382 INFO  L413           NwaCegarLoop]: 12270 mSDtfsCounter, 33134 mSDsluCounter, 48384 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33134 SdHoareTripleChecker+Valid, 60654 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:24:41,383 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33134 Valid, 60654 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:24:41,393 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14191 states.
[2023-11-29 04:24:41,453 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14191 to 7464.
[2023-11-29 04:24:41,459 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7464 states, 7463 states have (on average 1.6626021707088303) internal successors, (12408), 7463 states have internal predecessors, (12408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:41,466 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7464 states to 7464 states and 12408 transitions.
[2023-11-29 04:24:41,466 INFO  L78                 Accepts]: Start accepts. Automaton has 7464 states and 12408 transitions. Word has length 4975
[2023-11-29 04:24:41,469 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:24:41,469 INFO  L495      AbstractCegarLoop]: Abstraction has 7464 states and 12408 transitions.
[2023-11-29 04:24:41,469 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:41,469 INFO  L276                IsEmpty]: Start isEmpty. Operand 7464 states and 12408 transitions.
[2023-11-29 04:24:41,569 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4977
[2023-11-29 04:24:41,569 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:24:41,570 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:24:41,679 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 04:24:41,770 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:41,771 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:24:41,771 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:24:41,772 INFO  L85        PathProgramCache]: Analyzing trace with hash -2000412163, now seen corresponding path program 1 times
[2023-11-29 04:24:41,772 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:24:41,772 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892576650]
[2023-11-29 04:24:41,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:41,773 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:24:42,419 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:24:42,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288469953]
[2023-11-29 04:24:42,420 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:42,420 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:42,420 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:24:42,421 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:24:42,422 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 04:24:52,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:24:53,189 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41839 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:24:53,265 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:24:53,482 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2023-11-29 04:24:53,482 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:24:53,482 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:24:53,483 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892576650]
[2023-11-29 04:24:53,483 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:24:53,483 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288469953]
[2023-11-29 04:24:53,483 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [288469953] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:24:53,483 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:24:53,484 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:24:53,484 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964675498]
[2023-11-29 04:24:53,485 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:24:53,487 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:24:53,487 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:24:53,490 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:24:53,490 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:24:53,491 INFO  L87              Difference]: Start difference. First operand 7464 states and 12408 transitions. Second operand  has 7 states, 7 states have (on average 672.4285714285714) internal successors, (4707), 7 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:53,969 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:24:53,969 INFO  L93              Difference]: Finished difference Result 21035 states and 34964 transitions.
[2023-11-29 04:24:53,969 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:24:53,970 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 672.4285714285714) internal successors, (4707), 7 states have internal predecessors, (4707), 0 states have call successors, (0), 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 4976
[2023-11-29 04:24:53,974 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:24:53,984 INFO  L225             Difference]: With dead ends: 21035
[2023-11-29 04:24:53,984 INFO  L226             Difference]: Without dead ends: 14192
[2023-11-29 04:24:53,989 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4985 GetRequests, 4973 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:24:53,989 INFO  L413           NwaCegarLoop]: 12265 mSDtfsCounter, 33133 mSDsluCounter, 48369 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33133 SdHoareTripleChecker+Valid, 60634 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:24:53,989 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33133 Valid, 60634 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:24:53,999 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14192 states.
[2023-11-29 04:24:54,061 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14192 to 7466.
[2023-11-29 04:24:54,066 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7466 states, 7465 states have (on average 1.6624246483590086) internal successors, (12410), 7465 states have internal predecessors, (12410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:54,073 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7466 states to 7466 states and 12410 transitions.
[2023-11-29 04:24:54,074 INFO  L78                 Accepts]: Start accepts. Automaton has 7466 states and 12410 transitions. Word has length 4976
[2023-11-29 04:24:54,076 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:24:54,076 INFO  L495      AbstractCegarLoop]: Abstraction has 7466 states and 12410 transitions.
[2023-11-29 04:24:54,077 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 672.4285714285714) internal successors, (4707), 7 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:24:54,077 INFO  L276                IsEmpty]: Start isEmpty. Operand 7466 states and 12410 transitions.
[2023-11-29 04:24:54,250 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4978
[2023-11-29 04:24:54,250 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:24:54,251 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:24:54,361 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 04:24:54,451 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:54,451 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:24:54,452 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:24:54,453 INFO  L85        PathProgramCache]: Analyzing trace with hash -1893732277, now seen corresponding path program 1 times
[2023-11-29 04:24:54,454 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:24:54,454 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884844675]
[2023-11-29 04:24:54,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:54,454 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:24:55,039 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:24:55,039 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880534620]
[2023-11-29 04:24:55,040 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:55,040 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:55,040 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:24:55,041 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:24:55,042 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 04:25:05,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:25:05,937 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41843 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:25:06,012 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:25:06,236 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked.
[2023-11-29 04:25:06,236 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:25:06,236 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:25:06,236 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884844675]
[2023-11-29 04:25:06,236 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:25:06,236 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880534620]
[2023-11-29 04:25:06,237 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880534620] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:25:06,237 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:25:06,238 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:25:06,238 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180291488]
[2023-11-29 04:25:06,238 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:25:06,241 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:25:06,241 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:25:06,244 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:25:06,244 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:25:06,245 INFO  L87              Difference]: Start difference. First operand 7466 states and 12410 transitions. Second operand  has 7 states, 7 states have (on average 672.8571428571429) internal successors, (4710), 7 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:06,722 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:25:06,722 INFO  L93              Difference]: Finished difference Result 21041 states and 34970 transitions.
[2023-11-29 04:25:06,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:25:06,723 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 672.8571428571429) internal successors, (4710), 7 states have internal predecessors, (4710), 0 states have call successors, (0), 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 4977
[2023-11-29 04:25:06,726 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:25:06,736 INFO  L225             Difference]: With dead ends: 21041
[2023-11-29 04:25:06,736 INFO  L226             Difference]: Without dead ends: 14193
[2023-11-29 04:25:06,741 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4986 GetRequests, 4974 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:25:06,742 INFO  L413           NwaCegarLoop]: 12260 mSDtfsCounter, 33132 mSDsluCounter, 48354 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33132 SdHoareTripleChecker+Valid, 60614 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:25:06,742 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33132 Valid, 60614 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:25:06,756 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14193 states.
[2023-11-29 04:25:06,818 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14193 to 7468.
[2023-11-29 04:25:06,824 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7468 states, 7467 states have (on average 1.6622472211062007) internal successors, (12412), 7467 states have internal predecessors, (12412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:06,831 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7468 states to 7468 states and 12412 transitions.
[2023-11-29 04:25:06,831 INFO  L78                 Accepts]: Start accepts. Automaton has 7468 states and 12412 transitions. Word has length 4977
[2023-11-29 04:25:06,833 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:25:06,833 INFO  L495      AbstractCegarLoop]: Abstraction has 7468 states and 12412 transitions.
[2023-11-29 04:25:06,834 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 672.8571428571429) internal successors, (4710), 7 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:06,834 INFO  L276                IsEmpty]: Start isEmpty. Operand 7468 states and 12412 transitions.
[2023-11-29 04:25:06,934 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4979
[2023-11-29 04:25:06,934 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:25:06,935 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 04:25:07,046 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2023-11-29 04:25:07,136 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:25:07,136 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:25:07,136 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:25:07,138 INFO  L85        PathProgramCache]: Analyzing trace with hash 964303781, now seen corresponding path program 1 times
[2023-11-29 04:25:07,138 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:25:07,138 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779510792]
[2023-11-29 04:25:07,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:25:07,139 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:25:07,871 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:25:07,872 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987005789]
[2023-11-29 04:25:07,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:25:07,873 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:25:07,873 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:25:07,873 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:25:07,874 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 04:25:18,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:25:18,408 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41846 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:25:18,485 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:25:18,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked.
[2023-11-29 04:25:18,724 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:25:18,724 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:25:18,724 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779510792]
[2023-11-29 04:25:18,724 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:25:18,724 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987005789]
[2023-11-29 04:25:18,724 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [987005789] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:25:18,725 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:25:18,726 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:25:18,726 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037125988]
[2023-11-29 04:25:18,726 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:25:18,729 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:25:18,729 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:25:18,733 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:25:18,733 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:25:18,734 INFO  L87              Difference]: Start difference. First operand 7468 states and 12412 transitions. Second operand  has 7 states, 7 states have (on average 673.2857142857143) internal successors, (4713), 7 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:19,270 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:25:19,270 INFO  L93              Difference]: Finished difference Result 21047 states and 34976 transitions.
[2023-11-29 04:25:19,270 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:25:19,271 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 673.2857142857143) internal successors, (4713), 7 states have internal predecessors, (4713), 0 states have call successors, (0), 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 4978
[2023-11-29 04:25:19,274 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:25:19,285 INFO  L225             Difference]: With dead ends: 21047
[2023-11-29 04:25:19,285 INFO  L226             Difference]: Without dead ends: 14194
[2023-11-29 04:25:19,290 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4987 GetRequests, 4975 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:25:19,290 INFO  L413           NwaCegarLoop]: 12255 mSDtfsCounter, 33131 mSDsluCounter, 48339 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33131 SdHoareTripleChecker+Valid, 60594 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:25:19,291 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33131 Valid, 60594 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:25:19,302 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14194 states.
[2023-11-29 04:25:19,363 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14194 to 7470.
[2023-11-29 04:25:19,370 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7470 states, 7469 states have (on average 1.6620698888740126) internal successors, (12414), 7469 states have internal predecessors, (12414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:19,377 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7470 states to 7470 states and 12414 transitions.
[2023-11-29 04:25:19,377 INFO  L78                 Accepts]: Start accepts. Automaton has 7470 states and 12414 transitions. Word has length 4978
[2023-11-29 04:25:19,379 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:25:19,379 INFO  L495      AbstractCegarLoop]: Abstraction has 7470 states and 12414 transitions.
[2023-11-29 04:25:19,380 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 673.2857142857143) internal successors, (4713), 7 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:19,380 INFO  L276                IsEmpty]: Start isEmpty. Operand 7470 states and 12414 transitions.
[2023-11-29 04:25:19,571 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4980
[2023-11-29 04:25:19,571 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:25:19,572 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 04:25:19,681 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-11-29 04:25:19,773 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:25:19,773 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:25:19,773 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:25:19,774 INFO  L85        PathProgramCache]: Analyzing trace with hash -137909979, now seen corresponding path program 1 times
[2023-11-29 04:25:19,775 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:25:19,775 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742714596]
[2023-11-29 04:25:19,775 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:25:19,775 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:25:20,484 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:25:20,485 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285206007]
[2023-11-29 04:25:20,486 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:25:20,486 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:25:20,486 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:25:20,487 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:25:20,489 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 04:25:31,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:25:31,414 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41849 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:25:31,522 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:25:31,769 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-11-29 04:25:31,770 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:25:31,770 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:25:31,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742714596]
[2023-11-29 04:25:31,770 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:25:31,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285206007]
[2023-11-29 04:25:31,770 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285206007] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:25:31,770 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:25:31,771 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:25:31,771 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930364597]
[2023-11-29 04:25:31,771 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:25:31,775 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:25:31,775 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:25:31,779 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:25:31,779 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:25:31,780 INFO  L87              Difference]: Start difference. First operand 7470 states and 12414 transitions. Second operand  has 7 states, 7 states have (on average 673.7142857142857) internal successors, (4716), 7 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:32,424 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:25:32,425 INFO  L93              Difference]: Finished difference Result 21053 states and 34982 transitions.
[2023-11-29 04:25:32,425 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:25:32,426 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 673.7142857142857) internal successors, (4716), 7 states have internal predecessors, (4716), 0 states have call successors, (0), 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 4979
[2023-11-29 04:25:32,431 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:25:32,443 INFO  L225             Difference]: With dead ends: 21053
[2023-11-29 04:25:32,443 INFO  L226             Difference]: Without dead ends: 14195
[2023-11-29 04:25:32,448 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4988 GetRequests, 4976 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:25:32,449 INFO  L413           NwaCegarLoop]: 12250 mSDtfsCounter, 33130 mSDsluCounter, 48324 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33130 SdHoareTripleChecker+Valid, 60574 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 04:25:32,449 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33130 Valid, 60574 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 04:25:32,461 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14195 states.
[2023-11-29 04:25:32,549 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14195 to 7472.
[2023-11-29 04:25:32,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7472 states, 7471 states have (on average 1.661892651586133) internal successors, (12416), 7471 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:32,566 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7472 states to 7472 states and 12416 transitions.
[2023-11-29 04:25:32,566 INFO  L78                 Accepts]: Start accepts. Automaton has 7472 states and 12416 transitions. Word has length 4979
[2023-11-29 04:25:32,569 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:25:32,569 INFO  L495      AbstractCegarLoop]: Abstraction has 7472 states and 12416 transitions.
[2023-11-29 04:25:32,570 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 673.7142857142857) internal successors, (4716), 7 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:32,570 INFO  L276                IsEmpty]: Start isEmpty. Operand 7472 states and 12416 transitions.
[2023-11-29 04:25:32,806 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4981
[2023-11-29 04:25:32,806 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:25:32,807 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 04:25:32,921 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2023-11-29 04:25:33,008 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:25:33,008 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:25:33,008 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:25:33,009 INFO  L85        PathProgramCache]: Analyzing trace with hash 1976590283, now seen corresponding path program 1 times
[2023-11-29 04:25:33,009 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:25:33,009 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608129127]
[2023-11-29 04:25:33,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:25:33,010 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:25:33,814 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:25:33,815 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63007652]
[2023-11-29 04:25:33,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:25:33,816 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:25:33,816 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:25:33,817 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:25:33,817 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-29 04:25:45,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:25:45,256 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41852 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:25:45,332 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:25:45,551 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked.
[2023-11-29 04:25:45,551 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:25:45,551 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:25:45,551 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608129127]
[2023-11-29 04:25:45,551 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:25:45,551 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63007652]
[2023-11-29 04:25:45,551 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [63007652] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:25:45,551 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:25:45,553 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:25:45,553 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555273332]
[2023-11-29 04:25:45,553 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:25:45,555 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:25:45,555 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:25:45,558 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:25:45,558 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:25:45,559 INFO  L87              Difference]: Start difference. First operand 7472 states and 12416 transitions. Second operand  has 7 states, 7 states have (on average 674.1428571428571) internal successors, (4719), 7 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:46,052 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:25:46,053 INFO  L93              Difference]: Finished difference Result 21059 states and 34988 transitions.
[2023-11-29 04:25:46,053 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:25:46,054 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.1428571428571) internal successors, (4719), 7 states have internal predecessors, (4719), 0 states have call successors, (0), 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 4980
[2023-11-29 04:25:46,058 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:25:46,068 INFO  L225             Difference]: With dead ends: 21059
[2023-11-29 04:25:46,068 INFO  L226             Difference]: Without dead ends: 14196
[2023-11-29 04:25:46,072 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4989 GetRequests, 4977 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:25:46,073 INFO  L413           NwaCegarLoop]: 12245 mSDtfsCounter, 33129 mSDsluCounter, 48309 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33129 SdHoareTripleChecker+Valid, 60554 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:25:46,073 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33129 Valid, 60554 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:25:46,082 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14196 states.
[2023-11-29 04:25:46,143 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14196 to 7474.
[2023-11-29 04:25:46,149 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7474 states, 7473 states have (on average 1.661715509166332) internal successors, (12418), 7473 states have internal predecessors, (12418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:46,156 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7474 states to 7474 states and 12418 transitions.
[2023-11-29 04:25:46,156 INFO  L78                 Accepts]: Start accepts. Automaton has 7474 states and 12418 transitions. Word has length 4980
[2023-11-29 04:25:46,158 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:25:46,158 INFO  L495      AbstractCegarLoop]: Abstraction has 7474 states and 12418 transitions.
[2023-11-29 04:25:46,159 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.1428571428571) internal successors, (4719), 7 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:46,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 7474 states and 12418 transitions.
[2023-11-29 04:25:46,389 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4982
[2023-11-29 04:25:46,389 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:25:46,390 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:25:46,499 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2023-11-29 04:25:46,590 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:25:46,590 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:25:46,591 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:25:46,591 INFO  L85        PathProgramCache]: Analyzing trace with hash -446401407, now seen corresponding path program 1 times
[2023-11-29 04:25:46,591 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:25:46,592 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821465552]
[2023-11-29 04:25:46,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:25:46,592 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:25:47,176 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:25:47,176 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118395311]
[2023-11-29 04:25:47,177 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:25:47,177 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:25:47,178 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:25:47,178 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:25:47,179 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-11-29 04:25:57,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:25:58,013 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41856 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:25:58,089 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:25:58,318 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked.
[2023-11-29 04:25:58,318 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:25:58,318 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:25:58,318 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821465552]
[2023-11-29 04:25:58,319 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:25:58,319 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118395311]
[2023-11-29 04:25:58,319 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [118395311] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:25:58,319 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:25:58,320 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:25:58,320 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410725213]
[2023-11-29 04:25:58,320 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:25:58,323 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:25:58,323 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:25:58,326 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:25:58,326 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:25:58,327 INFO  L87              Difference]: Start difference. First operand 7474 states and 12418 transitions. Second operand  has 7 states, 7 states have (on average 674.5714285714286) internal successors, (4722), 7 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:58,794 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:25:58,794 INFO  L93              Difference]: Finished difference Result 21065 states and 34994 transitions.
[2023-11-29 04:25:58,794 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:25:58,795 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.5714285714286) internal successors, (4722), 7 states have internal predecessors, (4722), 0 states have call successors, (0), 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 4981
[2023-11-29 04:25:58,798 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:25:58,808 INFO  L225             Difference]: With dead ends: 21065
[2023-11-29 04:25:58,808 INFO  L226             Difference]: Without dead ends: 14197
[2023-11-29 04:25:58,813 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4990 GetRequests, 4978 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:25:58,814 INFO  L413           NwaCegarLoop]: 12240 mSDtfsCounter, 33128 mSDsluCounter, 48294 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33128 SdHoareTripleChecker+Valid, 60534 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:25:58,814 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33128 Valid, 60534 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:25:58,824 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14197 states.
[2023-11-29 04:25:58,884 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14197 to 7476.
[2023-11-29 04:25:58,890 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7476 states, 7475 states have (on average 1.6615384615384616) internal successors, (12420), 7475 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:58,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7476 states to 7476 states and 12420 transitions.
[2023-11-29 04:25:58,897 INFO  L78                 Accepts]: Start accepts. Automaton has 7476 states and 12420 transitions. Word has length 4981
[2023-11-29 04:25:58,900 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:25:58,900 INFO  L495      AbstractCegarLoop]: Abstraction has 7476 states and 12420 transitions.
[2023-11-29 04:25:58,901 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.5714285714286) internal successors, (4722), 7 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:25:58,901 INFO  L276                IsEmpty]: Start isEmpty. Operand 7476 states and 12420 transitions.
[2023-11-29 04:25:59,001 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4983
[2023-11-29 04:25:59,001 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:25:59,002 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:25:59,111 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-11-29 04:25:59,202 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:25:59,202 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:25:59,203 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:25:59,203 INFO  L85        PathProgramCache]: Analyzing trace with hash -2004972941, now seen corresponding path program 1 times
[2023-11-29 04:25:59,203 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:25:59,203 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242192622]
[2023-11-29 04:25:59,204 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:25:59,204 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:25:59,795 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:25:59,795 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539142601]
[2023-11-29 04:25:59,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:25:59,796 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:25:59,796 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:25:59,797 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:25:59,798 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-11-29 04:26:10,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:26:10,331 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41859 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:26:10,405 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:26:10,614 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked.
[2023-11-29 04:26:10,614 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:26:10,614 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:26:10,614 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242192622]
[2023-11-29 04:26:10,614 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:26:10,614 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539142601]
[2023-11-29 04:26:10,614 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539142601] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:26:10,614 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:26:10,616 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:26:10,616 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816583254]
[2023-11-29 04:26:10,616 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:26:10,618 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:26:10,618 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:26:10,620 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:26:10,620 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:26:10,621 INFO  L87              Difference]: Start difference. First operand 7476 states and 12420 transitions. Second operand  has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:11,113 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:26:11,113 INFO  L93              Difference]: Finished difference Result 21071 states and 35000 transitions.
[2023-11-29 04:26:11,113 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:26:11,115 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 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 4982
[2023-11-29 04:26:11,118 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:26:11,130 INFO  L225             Difference]: With dead ends: 21071
[2023-11-29 04:26:11,130 INFO  L226             Difference]: Without dead ends: 14198
[2023-11-29 04:26:11,136 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4991 GetRequests, 4979 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:26:11,136 INFO  L413           NwaCegarLoop]: 12235 mSDtfsCounter, 33127 mSDsluCounter, 48279 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33127 SdHoareTripleChecker+Valid, 60514 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:26:11,136 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33127 Valid, 60514 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:26:11,147 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14198 states.
[2023-11-29 04:26:11,208 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14198 to 7478.
[2023-11-29 04:26:11,213 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7478 states, 7477 states have (on average 1.6613615086264544) internal successors, (12422), 7477 states have internal predecessors, (12422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:11,221 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7478 states to 7478 states and 12422 transitions.
[2023-11-29 04:26:11,221 INFO  L78                 Accepts]: Start accepts. Automaton has 7478 states and 12422 transitions. Word has length 4982
[2023-11-29 04:26:11,223 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:26:11,223 INFO  L495      AbstractCegarLoop]: Abstraction has 7478 states and 12422 transitions.
[2023-11-29 04:26:11,224 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:11,224 INFO  L276                IsEmpty]: Start isEmpty. Operand 7478 states and 12422 transitions.
[2023-11-29 04:26:11,437 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4984
[2023-11-29 04:26:11,437 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:26:11,438 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 04:26:11,546 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-11-29 04:26:11,638 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-11-29 04:26:11,638 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:26:11,638 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:26:11,639 INFO  L85        PathProgramCache]: Analyzing trace with hash 1188030811, now seen corresponding path program 1 times
[2023-11-29 04:26:11,639 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:26:11,639 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203338385]
[2023-11-29 04:26:11,640 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:26:11,640 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:26:12,224 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:26:12,225 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916573276]
[2023-11-29 04:26:12,226 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:26:12,226 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:26:12,226 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:26:12,226 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:26:12,228 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-11-29 04:26:22,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:26:22,695 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41862 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:26:22,770 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:26:22,980 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked.
[2023-11-29 04:26:22,980 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:26:22,980 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:26:22,980 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203338385]
[2023-11-29 04:26:22,981 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:26:22,981 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916573276]
[2023-11-29 04:26:22,981 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [916573276] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:26:22,981 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:26:22,982 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:26:22,982 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511462878]
[2023-11-29 04:26:22,982 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:26:22,984 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:26:22,984 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:26:22,986 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:26:22,986 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:26:22,987 INFO  L87              Difference]: Start difference. First operand 7478 states and 12422 transitions. Second operand  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:23,447 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:26:23,448 INFO  L93              Difference]: Finished difference Result 21077 states and 35006 transitions.
[2023-11-29 04:26:23,448 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:26:23,449 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4983
[2023-11-29 04:26:23,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:26:23,462 INFO  L225             Difference]: With dead ends: 21077
[2023-11-29 04:26:23,462 INFO  L226             Difference]: Without dead ends: 14199
[2023-11-29 04:26:23,466 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4992 GetRequests, 4980 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:26:23,467 INFO  L413           NwaCegarLoop]: 12230 mSDtfsCounter, 33126 mSDsluCounter, 48264 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33126 SdHoareTripleChecker+Valid, 60494 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:26:23,467 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33126 Valid, 60494 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:26:23,477 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14199 states.
[2023-11-29 04:26:23,538 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14199 to 7480.
[2023-11-29 04:26:23,544 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7480 states, 7479 states have (on average 1.6611846503543255) internal successors, (12424), 7479 states have internal predecessors, (12424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:23,551 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7480 states to 7480 states and 12424 transitions.
[2023-11-29 04:26:23,551 INFO  L78                 Accepts]: Start accepts. Automaton has 7480 states and 12424 transitions. Word has length 4983
[2023-11-29 04:26:23,553 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:26:23,553 INFO  L495      AbstractCegarLoop]: Abstraction has 7480 states and 12424 transitions.
[2023-11-29 04:26:23,554 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:23,554 INFO  L276                IsEmpty]: Start isEmpty. Operand 7480 states and 12424 transitions.
[2023-11-29 04:26:23,654 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4985
[2023-11-29 04:26:23,654 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:26:23,655 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2023-11-29 04:26:23,764 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-11-29 04:26:23,855 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:26:23,856 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:26:23,856 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:26:23,856 INFO  L85        PathProgramCache]: Analyzing trace with hash 377746073, now seen corresponding path program 1 times
[2023-11-29 04:26:23,856 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:26:23,856 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253800938]
[2023-11-29 04:26:23,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:26:23,857 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:26:24,510 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:26:24,510 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91603067]
[2023-11-29 04:26:24,511 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:26:24,511 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:26:24,511 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:26:24,512 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:26:24,513 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-11-29 04:26:34,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:26:34,515 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41865 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:26:34,590 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:26:34,804 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked.
[2023-11-29 04:26:34,804 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:26:34,804 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:26:34,804 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253800938]
[2023-11-29 04:26:34,804 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:26:34,804 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91603067]
[2023-11-29 04:26:34,804 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [91603067] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:26:34,804 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:26:34,806 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:26:34,806 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552805020]
[2023-11-29 04:26:34,806 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:26:34,808 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:26:34,808 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:26:34,810 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:26:34,810 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:26:34,811 INFO  L87              Difference]: Start difference. First operand 7480 states and 12424 transitions. Second operand  has 7 states, 7 states have (on average 675.8571428571429) internal successors, (4731), 7 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:35,282 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:26:35,282 INFO  L93              Difference]: Finished difference Result 21083 states and 35012 transitions.
[2023-11-29 04:26:35,282 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:26:35,284 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.8571428571429) internal successors, (4731), 7 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4984
[2023-11-29 04:26:35,287 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:26:35,297 INFO  L225             Difference]: With dead ends: 21083
[2023-11-29 04:26:35,297 INFO  L226             Difference]: Without dead ends: 14200
[2023-11-29 04:26:35,302 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4993 GetRequests, 4981 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:26:35,302 INFO  L413           NwaCegarLoop]: 12225 mSDtfsCounter, 33125 mSDsluCounter, 48249 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33125 SdHoareTripleChecker+Valid, 60474 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:26:35,302 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33125 Valid, 60474 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:26:35,312 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14200 states.
[2023-11-29 04:26:35,373 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14200 to 7482.
[2023-11-29 04:26:35,378 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7482 states, 7481 states have (on average 1.6610078866461704) internal successors, (12426), 7481 states have internal predecessors, (12426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:35,386 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7482 states to 7482 states and 12426 transitions.
[2023-11-29 04:26:35,386 INFO  L78                 Accepts]: Start accepts. Automaton has 7482 states and 12426 transitions. Word has length 4984
[2023-11-29 04:26:35,388 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:26:35,388 INFO  L495      AbstractCegarLoop]: Abstraction has 7482 states and 12426 transitions.
[2023-11-29 04:26:35,389 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.8571428571429) internal successors, (4731), 7 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:35,389 INFO  L276                IsEmpty]: Start isEmpty. Operand 7482 states and 12426 transitions.
[2023-11-29 04:26:35,489 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4986
[2023-11-29 04:26:35,489 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:26:35,489 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 04:26:35,599 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2023-11-29 04:26:35,690 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:26:35,690 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:26:35,690 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:26:35,691 INFO  L85        PathProgramCache]: Analyzing trace with hash 174980535, now seen corresponding path program 1 times
[2023-11-29 04:26:35,691 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:26:35,691 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526654700]
[2023-11-29 04:26:35,691 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:26:35,691 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:26:36,275 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:26:36,275 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419426726]
[2023-11-29 04:26:36,276 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:26:36,276 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:26:36,276 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:26:36,277 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:26:36,277 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-11-29 04:26:46,873 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:26:47,116 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41869 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:26:47,192 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:26:47,402 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked.
[2023-11-29 04:26:47,402 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:26:47,402 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:26:47,402 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526654700]
[2023-11-29 04:26:47,402 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:26:47,402 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419426726]
[2023-11-29 04:26:47,402 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419426726] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:26:47,402 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:26:47,404 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:26:47,404 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123568222]
[2023-11-29 04:26:47,404 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:26:47,406 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:26:47,406 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:26:47,408 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:26:47,408 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:26:47,409 INFO  L87              Difference]: Start difference. First operand 7482 states and 12426 transitions. Second operand  has 7 states, 7 states have (on average 676.2857142857143) internal successors, (4734), 7 states have internal predecessors, (4734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:47,876 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:26:47,877 INFO  L93              Difference]: Finished difference Result 21089 states and 35018 transitions.
[2023-11-29 04:26:47,877 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:26:47,878 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 676.2857142857143) internal successors, (4734), 7 states have internal predecessors, (4734), 0 states have call successors, (0), 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 4985
[2023-11-29 04:26:47,881 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:26:47,891 INFO  L225             Difference]: With dead ends: 21089
[2023-11-29 04:26:47,891 INFO  L226             Difference]: Without dead ends: 14201
[2023-11-29 04:26:47,896 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4994 GetRequests, 4982 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:26:47,896 INFO  L413           NwaCegarLoop]: 12220 mSDtfsCounter, 33124 mSDsluCounter, 48234 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33124 SdHoareTripleChecker+Valid, 60454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:26:47,896 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33124 Valid, 60454 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:26:47,906 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14201 states.
[2023-11-29 04:26:47,968 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14201 to 7484.
[2023-11-29 04:26:47,973 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7484 states, 7483 states have (on average 1.660831217426166) internal successors, (12428), 7483 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:47,981 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7484 states to 7484 states and 12428 transitions.
[2023-11-29 04:26:47,981 INFO  L78                 Accepts]: Start accepts. Automaton has 7484 states and 12428 transitions. Word has length 4985
[2023-11-29 04:26:47,983 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:26:47,983 INFO  L495      AbstractCegarLoop]: Abstraction has 7484 states and 12428 transitions.
[2023-11-29 04:26:47,984 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 676.2857142857143) internal successors, (4734), 7 states have internal predecessors, (4734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:26:47,984 INFO  L276                IsEmpty]: Start isEmpty. Operand 7484 states and 12428 transitions.
[2023-11-29 04:26:48,217 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4987
[2023-11-29 04:26:48,217 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:26:48,217 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 04:26:48,327 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0
[2023-11-29 04:26:48,418 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31
[2023-11-29 04:26:48,418 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:26:48,419 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:26:48,419 INFO  L85        PathProgramCache]: Analyzing trace with hash 787107393, now seen corresponding path program 1 times
[2023-11-29 04:26:48,419 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:26:48,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726113068]
[2023-11-29 04:26:48,420 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:26:48,420 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:26:49,009 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:26:49,009 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558280051]
[2023-11-29 04:26:49,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:26:49,010 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:26:49,010 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:26:49,011 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:26:49,012 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-11-29 04:26:59,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:26:59,511 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41872 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:26:59,586 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:26:59,792 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked.
[2023-11-29 04:26:59,792 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:26:59,793 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:26:59,793 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726113068]
[2023-11-29 04:26:59,793 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:26:59,793 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558280051]
[2023-11-29 04:26:59,793 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558280051] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:26:59,793 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:26:59,794 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:26:59,795 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381985614]
[2023-11-29 04:26:59,795 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:26:59,797 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:26:59,797 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:26:59,799 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:26:59,799 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:26:59,799 INFO  L87              Difference]: Start difference. First operand 7484 states and 12428 transitions. Second operand  has 7 states, 7 states have (on average 676.7142857142857) internal successors, (4737), 7 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:00,251 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:27:00,251 INFO  L93              Difference]: Finished difference Result 21095 states and 35024 transitions.
[2023-11-29 04:27:00,251 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:27:00,252 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 676.7142857142857) internal successors, (4737), 7 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4986
[2023-11-29 04:27:00,255 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:27:00,265 INFO  L225             Difference]: With dead ends: 21095
[2023-11-29 04:27:00,265 INFO  L226             Difference]: Without dead ends: 14202
[2023-11-29 04:27:00,269 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4995 GetRequests, 4983 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:27:00,270 INFO  L413           NwaCegarLoop]: 12215 mSDtfsCounter, 33123 mSDsluCounter, 48219 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33123 SdHoareTripleChecker+Valid, 60434 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:27:00,270 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33123 Valid, 60434 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:27:00,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14202 states.
[2023-11-29 04:27:00,341 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14202 to 7486.
[2023-11-29 04:27:00,347 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7486 states, 7485 states have (on average 1.6606546426185704) internal successors, (12430), 7485 states have internal predecessors, (12430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:00,354 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7486 states to 7486 states and 12430 transitions.
[2023-11-29 04:27:00,354 INFO  L78                 Accepts]: Start accepts. Automaton has 7486 states and 12430 transitions. Word has length 4986
[2023-11-29 04:27:00,356 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:27:00,356 INFO  L495      AbstractCegarLoop]: Abstraction has 7486 states and 12430 transitions.
[2023-11-29 04:27:00,357 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 676.7142857142857) internal successors, (4737), 7 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:00,357 INFO  L276                IsEmpty]: Start isEmpty. Operand 7486 states and 12430 transitions.
[2023-11-29 04:27:00,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4988
[2023-11-29 04:27:00,457 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:27:00,458 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 04:27:00,566 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-11-29 04:27:00,658 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32
[2023-11-29 04:27:00,658 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:27:00,659 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:27:00,659 INFO  L85        PathProgramCache]: Analyzing trace with hash 1032957585, now seen corresponding path program 1 times
[2023-11-29 04:27:00,659 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:27:00,659 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785874984]
[2023-11-29 04:27:00,660 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:27:00,660 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:27:01,242 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:27:01,243 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960525829]
[2023-11-29 04:27:01,243 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:27:01,244 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:27:01,244 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:27:01,244 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:27:01,245 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-11-29 04:27:11,844 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:27:12,081 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41875 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:27:12,154 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:27:12,375 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked.
[2023-11-29 04:27:12,376 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:27:12,376 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:27:12,376 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785874984]
[2023-11-29 04:27:12,376 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:27:12,376 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960525829]
[2023-11-29 04:27:12,376 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [960525829] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:27:12,376 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:27:12,377 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:27:12,377 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847189070]
[2023-11-29 04:27:12,377 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:27:12,380 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:27:12,380 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:27:12,382 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:27:12,382 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:27:12,383 INFO  L87              Difference]: Start difference. First operand 7486 states and 12430 transitions. Second operand  has 7 states, 7 states have (on average 677.1428571428571) internal successors, (4740), 7 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:12,845 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:27:12,845 INFO  L93              Difference]: Finished difference Result 21101 states and 35030 transitions.
[2023-11-29 04:27:12,845 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:27:12,846 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 677.1428571428571) internal successors, (4740), 7 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4987
[2023-11-29 04:27:12,849 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:27:12,860 INFO  L225             Difference]: With dead ends: 21101
[2023-11-29 04:27:12,860 INFO  L226             Difference]: Without dead ends: 14203
[2023-11-29 04:27:12,865 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4996 GetRequests, 4984 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:27:12,865 INFO  L413           NwaCegarLoop]: 12210 mSDtfsCounter, 33122 mSDsluCounter, 48204 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33122 SdHoareTripleChecker+Valid, 60414 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:27:12,865 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33122 Valid, 60414 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:27:12,875 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14203 states.
[2023-11-29 04:27:12,936 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14203 to 7488.
[2023-11-29 04:27:12,941 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7488 states, 7487 states have (on average 1.6604781621477227) internal successors, (12432), 7487 states have internal predecessors, (12432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:12,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 12432 transitions.
[2023-11-29 04:27:12,949 INFO  L78                 Accepts]: Start accepts. Automaton has 7488 states and 12432 transitions. Word has length 4987
[2023-11-29 04:27:12,951 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:27:12,951 INFO  L495      AbstractCegarLoop]: Abstraction has 7488 states and 12432 transitions.
[2023-11-29 04:27:12,952 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 677.1428571428571) internal successors, (4740), 7 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:12,952 INFO  L276                IsEmpty]: Start isEmpty. Operand 7488 states and 12432 transitions.
[2023-11-29 04:27:13,162 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4989
[2023-11-29 04:27:13,163 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:27:13,163 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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]
[2023-11-29 04:27:13,272 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0
[2023-11-29 04:27:13,364 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2023-11-29 04:27:13,364 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:27:13,365 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:27:13,365 INFO  L85        PathProgramCache]: Analyzing trace with hash 1445616231, now seen corresponding path program 1 times
[2023-11-29 04:27:13,365 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:27:13,365 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552824714]
[2023-11-29 04:27:13,367 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:27:13,367 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:27:13,951 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:27:13,951 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77069219]
[2023-11-29 04:27:13,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:27:13,952 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:27:13,952 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:27:13,953 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:27:13,953 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-11-29 04:27:24,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:27:24,711 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41878 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:27:24,789 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:27:25,001 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked.
[2023-11-29 04:27:25,001 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:27:25,001 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:27:25,001 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552824714]
[2023-11-29 04:27:25,002 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:27:25,002 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77069219]
[2023-11-29 04:27:25,002 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [77069219] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:27:25,002 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:27:25,003 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:27:25,003 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600112141]
[2023-11-29 04:27:25,003 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:27:25,006 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:27:25,006 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:27:25,007 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:27:25,007 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:27:25,008 INFO  L87              Difference]: Start difference. First operand 7488 states and 12432 transitions. Second operand  has 7 states, 7 states have (on average 677.5714285714286) internal successors, (4743), 7 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:25,504 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:27:25,504 INFO  L93              Difference]: Finished difference Result 21107 states and 35036 transitions.
[2023-11-29 04:27:25,504 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:27:25,505 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 677.5714285714286) internal successors, (4743), 7 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4988
[2023-11-29 04:27:25,509 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:27:25,518 INFO  L225             Difference]: With dead ends: 21107
[2023-11-29 04:27:25,518 INFO  L226             Difference]: Without dead ends: 14204
[2023-11-29 04:27:25,523 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4997 GetRequests, 4985 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:27:25,524 INFO  L413           NwaCegarLoop]: 12205 mSDtfsCounter, 33121 mSDsluCounter, 48189 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33121 SdHoareTripleChecker+Valid, 60394 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:27:25,524 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33121 Valid, 60394 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:27:25,534 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14204 states.
[2023-11-29 04:27:25,595 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14204 to 7490.
[2023-11-29 04:27:25,601 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7490 states, 7489 states have (on average 1.6603017759380425) internal successors, (12434), 7489 states have internal predecessors, (12434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:25,608 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7490 states to 7490 states and 12434 transitions.
[2023-11-29 04:27:25,608 INFO  L78                 Accepts]: Start accepts. Automaton has 7490 states and 12434 transitions. Word has length 4988
[2023-11-29 04:27:25,610 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:27:25,610 INFO  L495      AbstractCegarLoop]: Abstraction has 7490 states and 12434 transitions.
[2023-11-29 04:27:25,611 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 677.5714285714286) internal successors, (4743), 7 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:25,611 INFO  L276                IsEmpty]: Start isEmpty. Operand 7490 states and 12434 transitions.
[2023-11-29 04:27:25,711 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4990
[2023-11-29 04:27:25,711 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:27:25,713 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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]
[2023-11-29 04:27:25,823 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2023-11-29 04:27:25,913 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2023-11-29 04:27:25,914 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:27:25,914 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:27:25,914 INFO  L85        PathProgramCache]: Analyzing trace with hash 1973029869, now seen corresponding path program 1 times
[2023-11-29 04:27:25,915 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:27:25,915 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148106414]
[2023-11-29 04:27:25,915 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:27:25,915 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:27:26,498 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:27:26,498 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999148135]
[2023-11-29 04:27:26,499 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:27:26,499 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:27:26,499 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:27:26,500 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:27:26,501 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-11-29 04:27:37,088 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:27:37,333 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41882 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:27:37,408 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:27:37,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked.
[2023-11-29 04:27:37,626 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:27:37,626 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:27:37,626 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148106414]
[2023-11-29 04:27:37,626 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:27:37,626 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999148135]
[2023-11-29 04:27:37,626 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [999148135] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:27:37,626 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:27:37,628 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:27:37,628 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273440011]
[2023-11-29 04:27:37,628 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:27:37,630 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:27:37,630 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:27:37,632 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:27:37,632 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:27:37,633 INFO  L87              Difference]: Start difference. First operand 7490 states and 12434 transitions. Second operand  has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:38,111 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:27:38,111 INFO  L93              Difference]: Finished difference Result 21113 states and 35042 transitions.
[2023-11-29 04:27:38,112 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:27:38,113 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4989
[2023-11-29 04:27:38,116 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:27:38,126 INFO  L225             Difference]: With dead ends: 21113
[2023-11-29 04:27:38,126 INFO  L226             Difference]: Without dead ends: 14205
[2023-11-29 04:27:38,131 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4998 GetRequests, 4986 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:27:38,131 INFO  L413           NwaCegarLoop]: 12200 mSDtfsCounter, 33120 mSDsluCounter, 48174 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33120 SdHoareTripleChecker+Valid, 60374 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:27:38,131 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33120 Valid, 60374 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:27:38,142 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14205 states.
[2023-11-29 04:27:38,202 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14205 to 7492.
[2023-11-29 04:27:38,208 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7492 states, 7491 states have (on average 1.6601254839140303) internal successors, (12436), 7491 states have internal predecessors, (12436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:38,215 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7492 states to 7492 states and 12436 transitions.
[2023-11-29 04:27:38,215 INFO  L78                 Accepts]: Start accepts. Automaton has 7492 states and 12436 transitions. Word has length 4989
[2023-11-29 04:27:38,217 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:27:38,217 INFO  L495      AbstractCegarLoop]: Abstraction has 7492 states and 12436 transitions.
[2023-11-29 04:27:38,218 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:38,218 INFO  L276                IsEmpty]: Start isEmpty. Operand 7492 states and 12436 transitions.
[2023-11-29 04:27:38,429 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4991
[2023-11-29 04:27:38,429 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:27:38,430 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:27:38,538 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0
[2023-11-29 04:27:38,630 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2023-11-29 04:27:38,630 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:27:38,631 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:27:38,631 INFO  L85        PathProgramCache]: Analyzing trace with hash -615979249, now seen corresponding path program 1 times
[2023-11-29 04:27:38,631 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:27:38,631 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093492156]
[2023-11-29 04:27:38,632 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:27:38,632 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:27:39,223 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:27:39,223 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903082729]
[2023-11-29 04:27:39,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:27:39,224 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:27:39,225 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:27:39,225 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:27:39,228 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-11-29 04:27:49,366 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:27:49,612 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41885 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:27:49,687 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:27:49,911 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2023-11-29 04:27:49,911 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:27:49,912 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:27:49,912 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093492156]
[2023-11-29 04:27:49,912 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:27:49,912 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903082729]
[2023-11-29 04:27:49,912 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903082729] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:27:49,912 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:27:49,913 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:27:49,913 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377602776]
[2023-11-29 04:27:49,914 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:27:49,916 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:27:49,916 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:27:49,919 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:27:49,919 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:27:49,920 INFO  L87              Difference]: Start difference. First operand 7492 states and 12436 transitions. Second operand  has 7 states, 7 states have (on average 678.4285714285714) internal successors, (4749), 7 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:50,388 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:27:50,388 INFO  L93              Difference]: Finished difference Result 21119 states and 35048 transitions.
[2023-11-29 04:27:50,389 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:27:50,390 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.4285714285714) internal successors, (4749), 7 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4990
[2023-11-29 04:27:50,393 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:27:50,403 INFO  L225             Difference]: With dead ends: 21119
[2023-11-29 04:27:50,403 INFO  L226             Difference]: Without dead ends: 14206
[2023-11-29 04:27:50,408 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4999 GetRequests, 4987 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:27:50,409 INFO  L413           NwaCegarLoop]: 12195 mSDtfsCounter, 33119 mSDsluCounter, 48159 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33119 SdHoareTripleChecker+Valid, 60354 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:27:50,409 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33119 Valid, 60354 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:27:50,419 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14206 states.
[2023-11-29 04:27:50,480 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14206 to 7494.
[2023-11-29 04:27:50,486 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7494 states, 7493 states have (on average 1.659949286000267) internal successors, (12438), 7493 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:50,493 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 12438 transitions.
[2023-11-29 04:27:50,493 INFO  L78                 Accepts]: Start accepts. Automaton has 7494 states and 12438 transitions. Word has length 4990
[2023-11-29 04:27:50,495 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:27:50,495 INFO  L495      AbstractCegarLoop]: Abstraction has 7494 states and 12438 transitions.
[2023-11-29 04:27:50,496 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.4285714285714) internal successors, (4749), 7 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:27:50,496 INFO  L276                IsEmpty]: Start isEmpty. Operand 7494 states and 12438 transitions.
[2023-11-29 04:27:50,596 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4992
[2023-11-29 04:27:50,596 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:27:50,597 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 04:27:50,705 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0
[2023-11-29 04:27:50,797 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2023-11-29 04:27:50,798 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:27:50,798 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:27:50,799 INFO  L85        PathProgramCache]: Analyzing trace with hash 225081543, now seen corresponding path program 1 times
[2023-11-29 04:27:50,799 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:27:50,799 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105230941]
[2023-11-29 04:27:50,799 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:27:50,799 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:27:51,384 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:27:51,384 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266387442]
[2023-11-29 04:27:51,385 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:27:51,385 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:27:51,385 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:27:51,386 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:27:51,386 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-11-29 04:28:01,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:28:02,219 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41888 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:28:02,294 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:28:02,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked.
[2023-11-29 04:28:02,505 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:28:02,505 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:28:02,505 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105230941]
[2023-11-29 04:28:02,505 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:28:02,505 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266387442]
[2023-11-29 04:28:02,505 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [266387442] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:28:02,505 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:28:02,507 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:28:02,507 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296710062]
[2023-11-29 04:28:02,507 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:28:02,509 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:28:02,509 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:28:02,511 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:28:02,511 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:28:02,512 INFO  L87              Difference]: Start difference. First operand 7494 states and 12438 transitions. Second operand  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:02,980 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:28:02,980 INFO  L93              Difference]: Finished difference Result 21125 states and 35054 transitions.
[2023-11-29 04:28:02,981 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:28:02,982 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4991
[2023-11-29 04:28:02,985 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:28:02,995 INFO  L225             Difference]: With dead ends: 21125
[2023-11-29 04:28:02,995 INFO  L226             Difference]: Without dead ends: 14207
[2023-11-29 04:28:03,000 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5000 GetRequests, 4988 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:28:03,000 INFO  L413           NwaCegarLoop]: 12190 mSDtfsCounter, 33118 mSDsluCounter, 48144 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33118 SdHoareTripleChecker+Valid, 60334 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:28:03,000 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33118 Valid, 60334 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:28:03,011 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14207 states.
[2023-11-29 04:28:03,072 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14207 to 7496.
[2023-11-29 04:28:03,078 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7496 states, 7495 states have (on average 1.6597731821214143) internal successors, (12440), 7495 states have internal predecessors, (12440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:03,085 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 12440 transitions.
[2023-11-29 04:28:03,085 INFO  L78                 Accepts]: Start accepts. Automaton has 7496 states and 12440 transitions. Word has length 4991
[2023-11-29 04:28:03,087 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:28:03,087 INFO  L495      AbstractCegarLoop]: Abstraction has 7496 states and 12440 transitions.
[2023-11-29 04:28:03,088 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:03,088 INFO  L276                IsEmpty]: Start isEmpty. Operand 7496 states and 12440 transitions.
[2023-11-29 04:28:03,188 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4993
[2023-11-29 04:28:03,188 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:28:03,189 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 04:28:03,298 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2023-11-29 04:28:03,390 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-11-29 04:28:03,390 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:28:03,390 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:28:03,391 INFO  L85        PathProgramCache]: Analyzing trace with hash 21960501, now seen corresponding path program 1 times
[2023-11-29 04:28:03,391 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:28:03,391 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829604491]
[2023-11-29 04:28:03,391 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:03,391 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:28:03,975 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:28:03,975 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888859147]
[2023-11-29 04:28:03,976 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:03,976 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:28:03,976 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:28:03,976 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:28:03,977 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-11-29 04:28:14,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:28:14,714 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41891 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:28:14,790 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:28:15,007 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked.
[2023-11-29 04:28:15,008 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:28:15,008 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:28:15,008 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829604491]
[2023-11-29 04:28:15,008 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:28:15,008 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888859147]
[2023-11-29 04:28:15,008 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888859147] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:28:15,008 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:28:15,010 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:28:15,010 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217566335]
[2023-11-29 04:28:15,010 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:28:15,012 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:28:15,012 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:28:15,015 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:28:15,015 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:28:15,016 INFO  L87              Difference]: Start difference. First operand 7496 states and 12440 transitions. Second operand  has 7 states, 7 states have (on average 679.2857142857143) internal successors, (4755), 7 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:15,613 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:28:15,613 INFO  L93              Difference]: Finished difference Result 21131 states and 35060 transitions.
[2023-11-29 04:28:15,613 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:28:15,614 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.2857142857143) internal successors, (4755), 7 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4992
[2023-11-29 04:28:15,617 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:28:15,624 INFO  L225             Difference]: With dead ends: 21131
[2023-11-29 04:28:15,624 INFO  L226             Difference]: Without dead ends: 14208
[2023-11-29 04:28:15,627 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5001 GetRequests, 4989 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:28:15,628 INFO  L413           NwaCegarLoop]: 12185 mSDtfsCounter, 33117 mSDsluCounter, 48129 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33117 SdHoareTripleChecker+Valid, 60314 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:28:15,628 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33117 Valid, 60314 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:28:15,636 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14208 states.
[2023-11-29 04:28:15,693 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14208 to 7498.
[2023-11-29 04:28:15,698 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7498 states, 7497 states have (on average 1.6595971722022143) internal successors, (12442), 7497 states have internal predecessors, (12442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:15,705 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7498 states to 7498 states and 12442 transitions.
[2023-11-29 04:28:15,706 INFO  L78                 Accepts]: Start accepts. Automaton has 7498 states and 12442 transitions. Word has length 4992
[2023-11-29 04:28:15,708 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:28:15,708 INFO  L495      AbstractCegarLoop]: Abstraction has 7498 states and 12442 transitions.
[2023-11-29 04:28:15,709 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.2857142857143) internal successors, (4755), 7 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:15,709 INFO  L276                IsEmpty]: Start isEmpty. Operand 7498 states and 12442 transitions.
[2023-11-29 04:28:15,809 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4994
[2023-11-29 04:28:15,809 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:28:15,810 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:28:15,920 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0
[2023-11-29 04:28:16,010 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2023-11-29 04:28:16,010 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:28:16,011 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:28:16,011 INFO  L85        PathProgramCache]: Analyzing trace with hash -679076061, now seen corresponding path program 1 times
[2023-11-29 04:28:16,011 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:28:16,011 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954930329]
[2023-11-29 04:28:16,012 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:16,012 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:28:16,593 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:28:16,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174416486]
[2023-11-29 04:28:16,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:16,594 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:28:16,594 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:28:16,595 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:28:16,596 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-11-29 04:28:26,937 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:28:27,188 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41895 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:28:27,264 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:28:27,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked.
[2023-11-29 04:28:27,469 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:28:27,469 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:28:27,470 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954930329]
[2023-11-29 04:28:27,470 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:28:27,470 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174416486]
[2023-11-29 04:28:27,470 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174416486] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:28:27,470 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:28:27,471 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:28:27,471 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714119396]
[2023-11-29 04:28:27,472 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:28:27,474 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:28:27,474 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:28:27,475 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:28:27,476 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:28:27,476 INFO  L87              Difference]: Start difference. First operand 7498 states and 12442 transitions. Second operand  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:27,948 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:28:27,948 INFO  L93              Difference]: Finished difference Result 21137 states and 35066 transitions.
[2023-11-29 04:28:27,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:28:27,949 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4993
[2023-11-29 04:28:27,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:28:27,962 INFO  L225             Difference]: With dead ends: 21137
[2023-11-29 04:28:27,962 INFO  L226             Difference]: Without dead ends: 14209
[2023-11-29 04:28:27,967 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5002 GetRequests, 4990 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:28:27,967 INFO  L413           NwaCegarLoop]: 12180 mSDtfsCounter, 33116 mSDsluCounter, 48114 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33116 SdHoareTripleChecker+Valid, 60294 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:28:27,968 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33116 Valid, 60294 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:28:27,977 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14209 states.
[2023-11-29 04:28:28,038 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14209 to 7500.
[2023-11-29 04:28:28,044 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7500 states, 7499 states have (on average 1.659421256167489) internal successors, (12444), 7499 states have internal predecessors, (12444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:28,051 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7500 states to 7500 states and 12444 transitions.
[2023-11-29 04:28:28,051 INFO  L78                 Accepts]: Start accepts. Automaton has 7500 states and 12444 transitions. Word has length 4993
[2023-11-29 04:28:28,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:28:28,054 INFO  L495      AbstractCegarLoop]: Abstraction has 7500 states and 12444 transitions.
[2023-11-29 04:28:28,054 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:28,054 INFO  L276                IsEmpty]: Start isEmpty. Operand 7500 states and 12444 transitions.
[2023-11-29 04:28:28,154 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4995
[2023-11-29 04:28:28,155 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:28:28,155 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:28:28,264 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2023-11-29 04:28:28,356 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-11-29 04:28:28,356 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:28:28,356 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:28:28,357 INFO  L85        PathProgramCache]: Analyzing trace with hash -1654270755, now seen corresponding path program 1 times
[2023-11-29 04:28:28,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:28:28,357 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361227318]
[2023-11-29 04:28:28,358 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:28,358 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:28:29,087 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:28:29,088 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116264501]
[2023-11-29 04:28:29,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:29,089 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:28:29,089 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:28:29,090 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:28:29,092 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-11-29 04:28:39,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:28:39,440 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41898 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:28:39,516 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:28:39,732 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked.
[2023-11-29 04:28:39,732 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:28:39,732 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:28:39,732 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361227318]
[2023-11-29 04:28:39,733 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:28:39,733 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116264501]
[2023-11-29 04:28:39,733 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [116264501] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:28:39,733 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:28:39,734 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:28:39,734 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284741060]
[2023-11-29 04:28:39,734 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:28:39,737 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:28:39,737 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:28:39,738 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:28:39,739 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:28:39,739 INFO  L87              Difference]: Start difference. First operand 7500 states and 12444 transitions. Second operand  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:40,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:28:40,215 INFO  L93              Difference]: Finished difference Result 21143 states and 35072 transitions.
[2023-11-29 04:28:40,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:28:40,216 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4994
[2023-11-29 04:28:40,219 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:28:40,229 INFO  L225             Difference]: With dead ends: 21143
[2023-11-29 04:28:40,229 INFO  L226             Difference]: Without dead ends: 14210
[2023-11-29 04:28:40,234 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5003 GetRequests, 4991 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:28:40,235 INFO  L413           NwaCegarLoop]: 12175 mSDtfsCounter, 33115 mSDsluCounter, 48099 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33115 SdHoareTripleChecker+Valid, 60274 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:28:40,235 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33115 Valid, 60274 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:28:40,245 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14210 states.
[2023-11-29 04:28:40,306 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14210 to 7502.
[2023-11-29 04:28:40,312 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7502 states, 7501 states have (on average 1.659245433942141) internal successors, (12446), 7501 states have internal predecessors, (12446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:40,319 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7502 states to 7502 states and 12446 transitions.
[2023-11-29 04:28:40,319 INFO  L78                 Accepts]: Start accepts. Automaton has 7502 states and 12446 transitions. Word has length 4994
[2023-11-29 04:28:40,322 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:28:40,322 INFO  L495      AbstractCegarLoop]: Abstraction has 7502 states and 12446 transitions.
[2023-11-29 04:28:40,323 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:40,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 7502 states and 12446 transitions.
[2023-11-29 04:28:40,557 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4996
[2023-11-29 04:28:40,557 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:28:40,558 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:28:40,667 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0
[2023-11-29 04:28:40,758 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:28:40,759 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:28:40,759 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:28:40,760 INFO  L85        PathProgramCache]: Analyzing trace with hash -1057503235, now seen corresponding path program 1 times
[2023-11-29 04:28:40,760 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:28:40,760 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066407925]
[2023-11-29 04:28:40,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:40,760 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:28:41,346 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:28:41,346 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072510159]
[2023-11-29 04:28:41,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:41,347 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:28:41,348 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:28:41,348 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:28:41,349 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-11-29 04:28:51,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:28:51,732 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41901 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:28:51,807 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:28:52,018 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked.
[2023-11-29 04:28:52,018 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:28:52,018 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:28:52,018 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066407925]
[2023-11-29 04:28:52,018 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:28:52,019 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072510159]
[2023-11-29 04:28:52,019 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072510159] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:28:52,019 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:28:52,020 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:28:52,020 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074240694]
[2023-11-29 04:28:52,020 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:28:52,022 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:28:52,022 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:28:52,024 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:28:52,024 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:28:52,025 INFO  L87              Difference]: Start difference. First operand 7502 states and 12446 transitions. Second operand  has 7 states, 7 states have (on average 680.5714285714286) internal successors, (4764), 7 states have internal predecessors, (4764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:52,481 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:28:52,481 INFO  L93              Difference]: Finished difference Result 21149 states and 35078 transitions.
[2023-11-29 04:28:52,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:28:52,482 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 680.5714285714286) internal successors, (4764), 7 states have internal predecessors, (4764), 0 states have call successors, (0), 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 4995
[2023-11-29 04:28:52,485 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:28:52,495 INFO  L225             Difference]: With dead ends: 21149
[2023-11-29 04:28:52,495 INFO  L226             Difference]: Without dead ends: 14211
[2023-11-29 04:28:52,500 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5004 GetRequests, 4992 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:28:52,500 INFO  L413           NwaCegarLoop]: 12170 mSDtfsCounter, 33114 mSDsluCounter, 48084 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33114 SdHoareTripleChecker+Valid, 60254 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:28:52,501 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33114 Valid, 60254 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:28:52,511 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14211 states.
[2023-11-29 04:28:52,728 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14211 to 7504.
[2023-11-29 04:28:52,734 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7504 states, 7503 states have (on average 1.659069705451153) internal successors, (12448), 7503 states have internal predecessors, (12448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:52,741 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7504 states to 7504 states and 12448 transitions.
[2023-11-29 04:28:52,741 INFO  L78                 Accepts]: Start accepts. Automaton has 7504 states and 12448 transitions. Word has length 4995
[2023-11-29 04:28:52,744 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:28:52,744 INFO  L495      AbstractCegarLoop]: Abstraction has 7504 states and 12448 transitions.
[2023-11-29 04:28:52,744 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 680.5714285714286) internal successors, (4764), 7 states have internal predecessors, (4764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:28:52,744 INFO  L276                IsEmpty]: Start isEmpty. Operand 7504 states and 12448 transitions.
[2023-11-29 04:28:52,845 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4997
[2023-11-29 04:28:52,845 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:28:52,846 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:28:52,954 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2023-11-29 04:28:53,046 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:28:53,046 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:28:53,046 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:28:53,047 INFO  L85        PathProgramCache]: Analyzing trace with hash -1514297085, now seen corresponding path program 1 times
[2023-11-29 04:28:53,047 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:28:53,047 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888845169]
[2023-11-29 04:28:53,047 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:53,048 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:28:53,636 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:28:53,636 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652918449]
[2023-11-29 04:28:53,637 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:53,637 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:28:53,637 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:28:53,638 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:28:53,639 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-11-29 04:29:04,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:29:04,318 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41904 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:29:04,392 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:29:04,601 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked.
[2023-11-29 04:29:04,601 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:29:04,601 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:29:04,601 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888845169]
[2023-11-29 04:29:04,601 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:29:04,601 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652918449]
[2023-11-29 04:29:04,601 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [652918449] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:29:04,602 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:29:04,603 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:29:04,603 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196622996]
[2023-11-29 04:29:04,603 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:29:04,605 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:29:04,605 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:29:04,607 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:29:04,607 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:29:04,608 INFO  L87              Difference]: Start difference. First operand 7504 states and 12448 transitions. Second operand  has 7 states, 7 states have (on average 681.0) internal successors, (4767), 7 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:05,180 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:29:05,180 INFO  L93              Difference]: Finished difference Result 21155 states and 35084 transitions.
[2023-11-29 04:29:05,181 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:29:05,182 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 681.0) internal successors, (4767), 7 states have internal predecessors, (4767), 0 states have call successors, (0), 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 4996
[2023-11-29 04:29:05,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:29:05,194 INFO  L225             Difference]: With dead ends: 21155
[2023-11-29 04:29:05,194 INFO  L226             Difference]: Without dead ends: 14212
[2023-11-29 04:29:05,199 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5005 GetRequests, 4993 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:29:05,199 INFO  L413           NwaCegarLoop]: 12165 mSDtfsCounter, 33113 mSDsluCounter, 48069 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33113 SdHoareTripleChecker+Valid, 60234 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:29:05,199 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33113 Valid, 60234 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:29:05,209 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14212 states.
[2023-11-29 04:29:05,270 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14212 to 7506.
[2023-11-29 04:29:05,276 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7506 states, 7505 states have (on average 1.658894070619587) internal successors, (12450), 7505 states have internal predecessors, (12450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:05,283 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7506 states to 7506 states and 12450 transitions.
[2023-11-29 04:29:05,283 INFO  L78                 Accepts]: Start accepts. Automaton has 7506 states and 12450 transitions. Word has length 4996
[2023-11-29 04:29:05,286 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:29:05,286 INFO  L495      AbstractCegarLoop]: Abstraction has 7506 states and 12450 transitions.
[2023-11-29 04:29:05,287 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 681.0) internal successors, (4767), 7 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:05,287 INFO  L276                IsEmpty]: Start isEmpty. Operand 7506 states and 12450 transitions.
[2023-11-29 04:29:05,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4998
[2023-11-29 04:29:05,388 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:29:05,388 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-11-29 04:29:05,496 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0
[2023-11-29 04:29:05,589 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:29:05,589 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:29:05,589 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:29:05,590 INFO  L85        PathProgramCache]: Analyzing trace with hash 2047850329, now seen corresponding path program 1 times
[2023-11-29 04:29:05,590 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:29:05,590 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053735104]
[2023-11-29 04:29:05,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:29:05,591 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:29:06,179 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:29:06,179 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103669829]
[2023-11-29 04:29:06,180 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:29:06,180 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:29:06,180 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:29:06,181 INFO  L229       MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:29:06,181 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2023-11-29 04:29:16,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:29:16,733 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41908 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:29:16,809 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:29:17,027 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked.
[2023-11-29 04:29:17,027 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:29:17,027 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:29:17,027 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053735104]
[2023-11-29 04:29:17,027 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:29:17,027 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103669829]
[2023-11-29 04:29:17,027 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [103669829] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:29:17,027 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:29:17,029 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:29:17,029 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108237642]
[2023-11-29 04:29:17,029 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:29:17,031 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:29:17,031 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:29:17,032 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:29:17,033 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:29:17,033 INFO  L87              Difference]: Start difference. First operand 7506 states and 12450 transitions. Second operand  has 7 states, 7 states have (on average 681.4285714285714) internal successors, (4770), 7 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:17,583 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:29:17,583 INFO  L93              Difference]: Finished difference Result 21161 states and 35090 transitions.
[2023-11-29 04:29:17,583 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:29:17,584 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 681.4285714285714) internal successors, (4770), 7 states have internal predecessors, (4770), 0 states have call successors, (0), 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 4997
[2023-11-29 04:29:17,587 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:29:17,596 INFO  L225             Difference]: With dead ends: 21161
[2023-11-29 04:29:17,596 INFO  L226             Difference]: Without dead ends: 14213
[2023-11-29 04:29:17,599 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5006 GetRequests, 4994 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:29:17,599 INFO  L413           NwaCegarLoop]: 12160 mSDtfsCounter, 33112 mSDsluCounter, 48054 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33112 SdHoareTripleChecker+Valid, 60214 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:29:17,600 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33112 Valid, 60214 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:29:17,609 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14213 states.
[2023-11-29 04:29:17,667 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14213 to 7508.
[2023-11-29 04:29:17,673 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7508 states, 7507 states have (on average 1.6587185293725857) internal successors, (12452), 7507 states have internal predecessors, (12452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:17,680 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7508 states to 7508 states and 12452 transitions.
[2023-11-29 04:29:17,680 INFO  L78                 Accepts]: Start accepts. Automaton has 7508 states and 12452 transitions. Word has length 4997
[2023-11-29 04:29:17,682 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:29:17,683 INFO  L495      AbstractCegarLoop]: Abstraction has 7508 states and 12452 transitions.
[2023-11-29 04:29:17,683 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 681.4285714285714) internal successors, (4770), 7 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:17,683 INFO  L276                IsEmpty]: Start isEmpty. Operand 7508 states and 12452 transitions.
[2023-11-29 04:29:17,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4999
[2023-11-29 04:29:17,784 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:29:17,785 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:17,893 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0
[2023-11-29 04:29:17,985 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:29:17,985 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:29:17,986 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:29:17,986 INFO  L85        PathProgramCache]: Analyzing trace with hash -968058965, now seen corresponding path program 1 times
[2023-11-29 04:29:17,986 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:29:17,986 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163838586]
[2023-11-29 04:29:17,987 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:29:17,987 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:29:18,573 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:29:18,574 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867946932]
[2023-11-29 04:29:18,574 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:29:18,574 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:29:18,575 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:29:18,575 INFO  L229       MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:29:18,576 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2023-11-29 04:29:29,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:29:29,353 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41911 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:29:29,428 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:29:29,643 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked.
[2023-11-29 04:29:29,644 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:29:29,644 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:29:29,644 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163838586]
[2023-11-29 04:29:29,644 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:29:29,644 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867946932]
[2023-11-29 04:29:29,644 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [867946932] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:29:29,644 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:29:29,645 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:29:29,645 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442893064]
[2023-11-29 04:29:29,645 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:29:29,647 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:29:29,647 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:29:29,649 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:29:29,649 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:29:29,650 INFO  L87              Difference]: Start difference. First operand 7508 states and 12452 transitions. Second operand  has 7 states, 7 states have (on average 681.8571428571429) internal successors, (4773), 7 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:30,218 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:29:30,218 INFO  L93              Difference]: Finished difference Result 21167 states and 35096 transitions.
[2023-11-29 04:29:30,219 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:29:30,220 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 681.8571428571429) internal successors, (4773), 7 states have internal predecessors, (4773), 0 states have call successors, (0), 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 4998
[2023-11-29 04:29:30,223 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:29:30,232 INFO  L225             Difference]: With dead ends: 21167
[2023-11-29 04:29:30,233 INFO  L226             Difference]: Without dead ends: 14214
[2023-11-29 04:29:30,236 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5007 GetRequests, 4995 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:29:30,236 INFO  L413           NwaCegarLoop]: 12155 mSDtfsCounter, 33111 mSDsluCounter, 48039 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33111 SdHoareTripleChecker+Valid, 60194 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:29:30,237 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33111 Valid, 60194 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:29:30,246 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14214 states.
[2023-11-29 04:29:30,304 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14214 to 7510.
[2023-11-29 04:29:30,310 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7510 states, 7509 states have (on average 1.6585430816353708) internal successors, (12454), 7509 states have internal predecessors, (12454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:30,317 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7510 states to 7510 states and 12454 transitions.
[2023-11-29 04:29:30,317 INFO  L78                 Accepts]: Start accepts. Automaton has 7510 states and 12454 transitions. Word has length 4998
[2023-11-29 04:29:30,320 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:29:30,320 INFO  L495      AbstractCegarLoop]: Abstraction has 7510 states and 12454 transitions.
[2023-11-29 04:29:30,320 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 681.8571428571429) internal successors, (4773), 7 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:30,320 INFO  L276                IsEmpty]: Start isEmpty. Operand 7510 states and 12454 transitions.
[2023-11-29 04:29:30,421 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5000
[2023-11-29 04:29:30,421 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:29:30,422 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:29:30,530 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0
[2023-11-29 04:29:30,622 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:29:30,622 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:29:30,623 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:29:30,623 INFO  L85        PathProgramCache]: Analyzing trace with hash -1676207053, now seen corresponding path program 1 times
[2023-11-29 04:29:30,623 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:29:30,623 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847987266]
[2023-11-29 04:29:30,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:29:30,624 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:29:31,218 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:29:31,218 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768420858]
[2023-11-29 04:29:31,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:29:31,219 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:29:31,219 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:29:31,220 INFO  L229       MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:29:31,221 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2023-11-29 04:29:41,569 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:29:41,823 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41914 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:29:41,898 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:29:42,111 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked.
[2023-11-29 04:29:42,111 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:29:42,111 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:29:42,111 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847987266]
[2023-11-29 04:29:42,111 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:29:42,111 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768420858]
[2023-11-29 04:29:42,112 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768420858] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:29:42,112 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:29:42,113 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:29:42,113 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163364537]
[2023-11-29 04:29:42,113 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:29:42,116 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:29:42,116 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:29:42,118 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:29:42,118 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:29:42,118 INFO  L87              Difference]: Start difference. First operand 7510 states and 12454 transitions. Second operand  has 7 states, 7 states have (on average 682.2857142857143) internal successors, (4776), 7 states have internal predecessors, (4776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:42,722 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:29:42,722 INFO  L93              Difference]: Finished difference Result 21173 states and 35102 transitions.
[2023-11-29 04:29:42,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:29:42,723 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 682.2857142857143) internal successors, (4776), 7 states have internal predecessors, (4776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4999
[2023-11-29 04:29:42,726 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:29:42,734 INFO  L225             Difference]: With dead ends: 21173
[2023-11-29 04:29:42,734 INFO  L226             Difference]: Without dead ends: 14215
[2023-11-29 04:29:42,738 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5008 GetRequests, 4996 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:29:42,738 INFO  L413           NwaCegarLoop]: 12150 mSDtfsCounter, 33110 mSDsluCounter, 48024 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33110 SdHoareTripleChecker+Valid, 60174 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:29:42,739 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33110 Valid, 60174 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:29:42,748 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14215 states.
[2023-11-29 04:29:42,806 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14215 to 7512.
[2023-11-29 04:29:42,811 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7512 states, 7511 states have (on average 1.6583677273332447) internal successors, (12456), 7511 states have internal predecessors, (12456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:42,818 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7512 states to 7512 states and 12456 transitions.
[2023-11-29 04:29:42,819 INFO  L78                 Accepts]: Start accepts. Automaton has 7512 states and 12456 transitions. Word has length 4999
[2023-11-29 04:29:42,821 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:29:42,821 INFO  L495      AbstractCegarLoop]: Abstraction has 7512 states and 12456 transitions.
[2023-11-29 04:29:42,822 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 682.2857142857143) internal successors, (4776), 7 states have internal predecessors, (4776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:42,822 INFO  L276                IsEmpty]: Start isEmpty. Operand 7512 states and 12456 transitions.
[2023-11-29 04:29:42,922 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5001
[2023-11-29 04:29:42,922 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:29:42,923 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:29:43,031 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0
[2023-11-29 04:29:43,123 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:29:43,124 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:29:43,124 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:29:43,124 INFO  L85        PathProgramCache]: Analyzing trace with hash 1921093585, now seen corresponding path program 1 times
[2023-11-29 04:29:43,124 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:29:43,125 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738695984]
[2023-11-29 04:29:43,125 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:29:43,125 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:29:43,710 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:29:43,711 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606543274]
[2023-11-29 04:29:43,711 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:29:43,711 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:29:43,712 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:29:43,712 INFO  L229       MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:29:43,713 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2023-11-29 04:29:54,139 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:29:54,387 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41917 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:29:54,462 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:29:54,681 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2023-11-29 04:29:54,681 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:29:54,682 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:29:54,682 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738695984]
[2023-11-29 04:29:54,682 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:29:54,682 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606543274]
[2023-11-29 04:29:54,682 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606543274] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:29:54,682 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:29:54,683 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:29:54,684 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869799776]
[2023-11-29 04:29:54,684 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:29:54,686 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:29:54,686 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:29:54,689 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:29:54,689 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:29:54,689 INFO  L87              Difference]: Start difference. First operand 7512 states and 12456 transitions. Second operand  has 7 states, 7 states have (on average 682.7142857142857) internal successors, (4779), 7 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:55,309 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:29:55,309 INFO  L93              Difference]: Finished difference Result 21179 states and 35108 transitions.
[2023-11-29 04:29:55,309 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:29:55,310 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 682.7142857142857) internal successors, (4779), 7 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5000
[2023-11-29 04:29:55,313 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:29:55,322 INFO  L225             Difference]: With dead ends: 21179
[2023-11-29 04:29:55,322 INFO  L226             Difference]: Without dead ends: 14216
[2023-11-29 04:29:55,325 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5009 GetRequests, 4997 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:29:55,325 INFO  L413           NwaCegarLoop]: 12145 mSDtfsCounter, 33109 mSDsluCounter, 48009 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33109 SdHoareTripleChecker+Valid, 60154 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:29:55,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33109 Valid, 60154 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:29:55,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14216 states.
[2023-11-29 04:29:55,392 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14216 to 7514.
[2023-11-29 04:29:55,398 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7514 states, 7513 states have (on average 1.658192466391588) internal successors, (12458), 7513 states have internal predecessors, (12458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:55,405 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 12458 transitions.
[2023-11-29 04:29:55,405 INFO  L78                 Accepts]: Start accepts. Automaton has 7514 states and 12458 transitions. Word has length 5000
[2023-11-29 04:29:55,407 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:29:55,407 INFO  L495      AbstractCegarLoop]: Abstraction has 7514 states and 12458 transitions.
[2023-11-29 04:29:55,408 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 682.7142857142857) internal successors, (4779), 7 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:29:55,408 INFO  L276                IsEmpty]: Start isEmpty. Operand 7514 states and 12458 transitions.
[2023-11-29 04:29:55,508 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5002
[2023-11-29 04:29:55,509 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:29:55,509 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:29:55,618 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0
[2023-11-29 04:29:55,710 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:29:55,710 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:29:55,710 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:29:55,711 INFO  L85        PathProgramCache]: Analyzing trace with hash -1605086065, now seen corresponding path program 1 times
[2023-11-29 04:29:55,711 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:29:55,712 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870925946]
[2023-11-29 04:29:55,712 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:29:55,712 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:29:56,301 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:29:56,302 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661196758]
[2023-11-29 04:29:56,302 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:29:56,303 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:29:56,303 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:29:56,303 INFO  L229       MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:29:56,304 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2023-11-29 04:30:06,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:30:06,678 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41921 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:30:06,756 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:30:06,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2023-11-29 04:30:06,968 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:30:06,968 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:30:06,968 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870925946]
[2023-11-29 04:30:06,968 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:30:06,968 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661196758]
[2023-11-29 04:30:06,969 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [661196758] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:30:06,969 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:30:06,970 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:30:06,970 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26192097]
[2023-11-29 04:30:06,970 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:30:06,973 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:30:06,973 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:30:06,974 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:30:06,975 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:30:06,975 INFO  L87              Difference]: Start difference. First operand 7514 states and 12458 transitions. Second operand  has 7 states, 7 states have (on average 683.1428571428571) internal successors, (4782), 7 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:07,608 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:30:07,608 INFO  L93              Difference]: Finished difference Result 21185 states and 35114 transitions.
[2023-11-29 04:30:07,608 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:30:07,609 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 683.1428571428571) internal successors, (4782), 7 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5001
[2023-11-29 04:30:07,612 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:30:07,620 INFO  L225             Difference]: With dead ends: 21185
[2023-11-29 04:30:07,620 INFO  L226             Difference]: Without dead ends: 14217
[2023-11-29 04:30:07,623 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5010 GetRequests, 4998 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:30:07,624 INFO  L413           NwaCegarLoop]: 12140 mSDtfsCounter, 33108 mSDsluCounter, 47994 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33108 SdHoareTripleChecker+Valid, 60134 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:30:07,624 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33108 Valid, 60134 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:30:07,633 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14217 states.
[2023-11-29 04:30:07,691 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14217 to 7516.
[2023-11-29 04:30:07,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7516 states, 7515 states have (on average 1.6580172987358617) internal successors, (12460), 7515 states have internal predecessors, (12460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:07,704 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7516 states to 7516 states and 12460 transitions.
[2023-11-29 04:30:07,704 INFO  L78                 Accepts]: Start accepts. Automaton has 7516 states and 12460 transitions. Word has length 5001
[2023-11-29 04:30:07,706 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:30:07,706 INFO  L495      AbstractCegarLoop]: Abstraction has 7516 states and 12460 transitions.
[2023-11-29 04:30:07,707 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 683.1428571428571) internal successors, (4782), 7 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:07,707 INFO  L276                IsEmpty]: Start isEmpty. Operand 7516 states and 12460 transitions.
[2023-11-29 04:30:07,807 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5003
[2023-11-29 04:30:07,808 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:30:07,808 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:30:07,917 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0
[2023-11-29 04:30:08,009 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47
[2023-11-29 04:30:08,009 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:30:08,009 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:30:08,010 INFO  L85        PathProgramCache]: Analyzing trace with hash -934760583, now seen corresponding path program 1 times
[2023-11-29 04:30:08,010 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:30:08,010 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560426684]
[2023-11-29 04:30:08,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:30:08,010 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:30:08,595 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:30:08,595 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407014568]
[2023-11-29 04:30:08,596 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:30:08,596 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:30:08,596 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:30:08,597 INFO  L229       MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:30:08,597 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2023-11-29 04:30:18,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:30:19,228 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41924 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:30:19,300 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:30:19,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked.
[2023-11-29 04:30:19,518 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:30:19,518 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:30:19,518 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560426684]
[2023-11-29 04:30:19,518 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:30:19,518 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407014568]
[2023-11-29 04:30:19,518 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407014568] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:30:19,518 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:30:19,520 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:30:19,520 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344779392]
[2023-11-29 04:30:19,520 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:30:19,522 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:30:19,522 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:30:19,525 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:30:19,525 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:30:19,526 INFO  L87              Difference]: Start difference. First operand 7516 states and 12460 transitions. Second operand  has 7 states, 7 states have (on average 683.5714285714286) internal successors, (4785), 7 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:20,000 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:30:20,000 INFO  L93              Difference]: Finished difference Result 21191 states and 35120 transitions.
[2023-11-29 04:30:20,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:30:20,001 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 683.5714285714286) internal successors, (4785), 7 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5002
[2023-11-29 04:30:20,005 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:30:20,015 INFO  L225             Difference]: With dead ends: 21191
[2023-11-29 04:30:20,015 INFO  L226             Difference]: Without dead ends: 14218
[2023-11-29 04:30:20,020 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5011 GetRequests, 4999 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:30:20,021 INFO  L413           NwaCegarLoop]: 12135 mSDtfsCounter, 33107 mSDsluCounter, 47979 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33107 SdHoareTripleChecker+Valid, 60114 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:30:20,021 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33107 Valid, 60114 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:30:20,031 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14218 states.
[2023-11-29 04:30:20,094 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14218 to 7518.
[2023-11-29 04:30:20,100 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7518 states, 7517 states have (on average 1.6578422242916058) internal successors, (12462), 7517 states have internal predecessors, (12462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:20,107 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7518 states to 7518 states and 12462 transitions.
[2023-11-29 04:30:20,107 INFO  L78                 Accepts]: Start accepts. Automaton has 7518 states and 12462 transitions. Word has length 5002
[2023-11-29 04:30:20,109 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:30:20,109 INFO  L495      AbstractCegarLoop]: Abstraction has 7518 states and 12462 transitions.
[2023-11-29 04:30:20,110 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 683.5714285714286) internal successors, (4785), 7 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:20,110 INFO  L276                IsEmpty]: Start isEmpty. Operand 7518 states and 12462 transitions.
[2023-11-29 04:30:20,211 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5004
[2023-11-29 04:30:20,211 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:30:20,212 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:20,320 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0
[2023-11-29 04:30:20,412 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:30:20,412 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:30:20,413 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:30:20,413 INFO  L85        PathProgramCache]: Analyzing trace with hash 2078668137, now seen corresponding path program 1 times
[2023-11-29 04:30:20,413 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:30:20,413 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012427395]
[2023-11-29 04:30:20,414 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:30:20,414 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:30:21,148 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:30:21,148 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341411983]
[2023-11-29 04:30:21,149 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:30:21,149 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:30:21,149 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:30:21,150 INFO  L229       MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:30:21,151 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2023-11-29 04:30:31,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:30:31,600 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41927 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:30:31,677 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:30:31,889 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked.
[2023-11-29 04:30:31,889 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:30:31,889 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:30:31,889 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012427395]
[2023-11-29 04:30:31,889 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:30:31,889 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341411983]
[2023-11-29 04:30:31,889 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [341411983] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:30:31,890 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:30:31,891 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:30:31,891 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481481049]
[2023-11-29 04:30:31,891 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:30:31,893 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:30:31,893 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:30:31,895 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:30:31,895 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:30:31,895 INFO  L87              Difference]: Start difference. First operand 7518 states and 12462 transitions. Second operand  has 7 states, 7 states have (on average 684.0) internal successors, (4788), 7 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:32,368 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:30:32,368 INFO  L93              Difference]: Finished difference Result 21197 states and 35126 transitions.
[2023-11-29 04:30:32,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:30:32,370 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 684.0) internal successors, (4788), 7 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5003
[2023-11-29 04:30:32,373 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:30:32,383 INFO  L225             Difference]: With dead ends: 21197
[2023-11-29 04:30:32,383 INFO  L226             Difference]: Without dead ends: 14219
[2023-11-29 04:30:32,388 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5012 GetRequests, 5000 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:30:32,388 INFO  L413           NwaCegarLoop]: 12130 mSDtfsCounter, 33106 mSDsluCounter, 47964 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33106 SdHoareTripleChecker+Valid, 60094 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:30:32,388 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33106 Valid, 60094 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:30:32,398 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14219 states.
[2023-11-29 04:30:32,462 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14219 to 7520.
[2023-11-29 04:30:32,467 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7520 states, 7519 states have (on average 1.6576672429844395) internal successors, (12464), 7519 states have internal predecessors, (12464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:32,475 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 12464 transitions.
[2023-11-29 04:30:32,475 INFO  L78                 Accepts]: Start accepts. Automaton has 7520 states and 12464 transitions. Word has length 5003
[2023-11-29 04:30:32,477 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:30:32,477 INFO  L495      AbstractCegarLoop]: Abstraction has 7520 states and 12464 transitions.
[2023-11-29 04:30:32,478 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 684.0) internal successors, (4788), 7 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:32,478 INFO  L276                IsEmpty]: Start isEmpty. Operand 7520 states and 12464 transitions.
[2023-11-29 04:30:32,579 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5005
[2023-11-29 04:30:32,579 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:30:32,580 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:32,689 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0
[2023-11-29 04:30:32,780 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:30:32,780 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:30:32,781 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:30:32,781 INFO  L85        PathProgramCache]: Analyzing trace with hash 400968607, now seen corresponding path program 1 times
[2023-11-29 04:30:32,781 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:30:32,781 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206453258]
[2023-11-29 04:30:32,782 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:30:32,782 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:30:33,375 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:30:33,375 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743402023]
[2023-11-29 04:30:33,376 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:30:33,376 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:30:33,376 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:30:33,376 INFO  L229       MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:30:33,377 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2023-11-29 04:30:44,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:30:44,326 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41930 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:30:44,401 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:30:44,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked.
[2023-11-29 04:30:44,627 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:30:44,627 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:30:44,627 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206453258]
[2023-11-29 04:30:44,627 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:30:44,627 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743402023]
[2023-11-29 04:30:44,627 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [743402023] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:30:44,627 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:30:44,629 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:30:44,629 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460801199]
[2023-11-29 04:30:44,629 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:30:44,631 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:30:44,631 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:30:44,634 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:30:44,634 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:30:44,635 INFO  L87              Difference]: Start difference. First operand 7520 states and 12464 transitions. Second operand  has 7 states, 7 states have (on average 684.4285714285714) internal successors, (4791), 7 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:45,118 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:30:45,118 INFO  L93              Difference]: Finished difference Result 21203 states and 35132 transitions.
[2023-11-29 04:30:45,118 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:30:45,119 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 684.4285714285714) internal successors, (4791), 7 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5004
[2023-11-29 04:30:45,123 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:30:45,132 INFO  L225             Difference]: With dead ends: 21203
[2023-11-29 04:30:45,132 INFO  L226             Difference]: Without dead ends: 14220
[2023-11-29 04:30:45,137 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5013 GetRequests, 5001 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:30:45,137 INFO  L413           NwaCegarLoop]: 12125 mSDtfsCounter, 33105 mSDsluCounter, 47949 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33105 SdHoareTripleChecker+Valid, 60074 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:30:45,137 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33105 Valid, 60074 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:30:45,147 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14220 states.
[2023-11-29 04:30:45,210 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14220 to 7522.
[2023-11-29 04:30:45,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7522 states, 7521 states have (on average 1.657492354740061) internal successors, (12466), 7521 states have internal predecessors, (12466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:45,222 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7522 states to 7522 states and 12466 transitions.
[2023-11-29 04:30:45,223 INFO  L78                 Accepts]: Start accepts. Automaton has 7522 states and 12466 transitions. Word has length 5004
[2023-11-29 04:30:45,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:30:45,225 INFO  L495      AbstractCegarLoop]: Abstraction has 7522 states and 12466 transitions.
[2023-11-29 04:30:45,226 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 684.4285714285714) internal successors, (4791), 7 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:45,226 INFO  L276                IsEmpty]: Start isEmpty. Operand 7522 states and 12466 transitions.
[2023-11-29 04:30:45,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5006
[2023-11-29 04:30:45,327 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:30:45,328 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:30:45,435 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0
[2023-11-29 04:30:45,528 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:30:45,528 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:30:45,528 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:30:45,529 INFO  L85        PathProgramCache]: Analyzing trace with hash -424577339, now seen corresponding path program 1 times
[2023-11-29 04:30:45,529 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:30:45,529 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830294228]
[2023-11-29 04:30:45,529 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:30:45,529 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:30:46,116 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:30:46,116 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129997035]
[2023-11-29 04:30:46,117 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:30:46,117 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:30:46,117 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:30:46,118 INFO  L229       MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:30:46,119 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2023-11-29 04:30:57,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:30:57,260 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41934 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:30:57,339 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:30:57,548 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked.
[2023-11-29 04:30:57,548 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:30:57,548 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:30:57,548 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830294228]
[2023-11-29 04:30:57,548 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:30:57,548 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129997035]
[2023-11-29 04:30:57,548 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [129997035] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:30:57,548 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:30:57,549 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:30:57,549 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711090925]
[2023-11-29 04:30:57,549 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:30:57,551 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:30:57,551 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:30:57,553 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:30:57,553 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:30:57,554 INFO  L87              Difference]: Start difference. First operand 7522 states and 12466 transitions. Second operand  has 7 states, 7 states have (on average 684.8571428571429) internal successors, (4794), 7 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:58,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:30:58,032 INFO  L93              Difference]: Finished difference Result 21209 states and 35138 transitions.
[2023-11-29 04:30:58,033 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:30:58,034 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 684.8571428571429) internal successors, (4794), 7 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5005
[2023-11-29 04:30:58,037 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:30:58,047 INFO  L225             Difference]: With dead ends: 21209
[2023-11-29 04:30:58,047 INFO  L226             Difference]: Without dead ends: 14221
[2023-11-29 04:30:58,052 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5014 GetRequests, 5002 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:30:58,053 INFO  L413           NwaCegarLoop]: 12120 mSDtfsCounter, 33104 mSDsluCounter, 47934 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33104 SdHoareTripleChecker+Valid, 60054 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:30:58,053 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33104 Valid, 60054 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:30:58,066 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14221 states.
[2023-11-29 04:30:58,139 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14221 to 7524.
[2023-11-29 04:30:58,144 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7524 states, 7523 states have (on average 1.6573175594842484) internal successors, (12468), 7523 states have internal predecessors, (12468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:58,151 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 12468 transitions.
[2023-11-29 04:30:58,152 INFO  L78                 Accepts]: Start accepts. Automaton has 7524 states and 12468 transitions. Word has length 5005
[2023-11-29 04:30:58,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:30:58,154 INFO  L495      AbstractCegarLoop]: Abstraction has 7524 states and 12468 transitions.
[2023-11-29 04:30:58,155 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 684.8571428571429) internal successors, (4794), 7 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:30:58,155 INFO  L276                IsEmpty]: Start isEmpty. Operand 7524 states and 12468 transitions.
[2023-11-29 04:30:58,362 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5007
[2023-11-29 04:30:58,362 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:30:58,363 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:30:58,472 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0
[2023-11-29 04:30:58,564 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:30:58,564 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:30:58,564 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:30:58,565 INFO  L85        PathProgramCache]: Analyzing trace with hash 384146503, now seen corresponding path program 1 times
[2023-11-29 04:30:58,565 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:30:58,565 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192666160]
[2023-11-29 04:30:58,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:30:58,566 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:30:59,156 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:30:59,156 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307091052]
[2023-11-29 04:30:59,157 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:30:59,157 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:30:59,157 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:30:59,158 INFO  L229       MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:30:59,158 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2023-11-29 04:31:09,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:09,861 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41937 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:31:09,937 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:31:10,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked.
[2023-11-29 04:31:10,156 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:31:10,156 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:10,156 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192666160]
[2023-11-29 04:31:10,156 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:31:10,156 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307091052]
[2023-11-29 04:31:10,157 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307091052] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:10,157 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:10,158 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:31:10,158 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036779952]
[2023-11-29 04:31:10,158 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:10,160 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:31:10,160 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:10,162 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:31:10,162 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:31:10,163 INFO  L87              Difference]: Start difference. First operand 7524 states and 12468 transitions. Second operand  has 7 states, 7 states have (on average 685.2857142857143) internal successors, (4797), 7 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:10,641 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:10,641 INFO  L93              Difference]: Finished difference Result 21215 states and 35144 transitions.
[2023-11-29 04:31:10,641 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:31:10,643 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 685.2857142857143) internal successors, (4797), 7 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5006
[2023-11-29 04:31:10,646 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:10,656 INFO  L225             Difference]: With dead ends: 21215
[2023-11-29 04:31:10,656 INFO  L226             Difference]: Without dead ends: 14222
[2023-11-29 04:31:10,661 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5015 GetRequests, 5003 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:31:10,661 INFO  L413           NwaCegarLoop]: 12115 mSDtfsCounter, 33103 mSDsluCounter, 47919 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33103 SdHoareTripleChecker+Valid, 60034 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:10,661 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33103 Valid, 60034 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:31:10,671 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14222 states.
[2023-11-29 04:31:10,734 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14222 to 7526.
[2023-11-29 04:31:10,739 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7526 states, 7525 states have (on average 1.6571428571428573) internal successors, (12470), 7525 states have internal predecessors, (12470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:10,747 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7526 states to 7526 states and 12470 transitions.
[2023-11-29 04:31:10,747 INFO  L78                 Accepts]: Start accepts. Automaton has 7526 states and 12470 transitions. Word has length 5006
[2023-11-29 04:31:10,749 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:10,749 INFO  L495      AbstractCegarLoop]: Abstraction has 7526 states and 12470 transitions.
[2023-11-29 04:31:10,750 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 685.2857142857143) internal successors, (4797), 7 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:10,750 INFO  L276                IsEmpty]: Start isEmpty. Operand 7526 states and 12470 transitions.
[2023-11-29 04:31:10,851 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5008
[2023-11-29 04:31:10,851 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:10,852 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:31:10,961 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2023-11-29 04:31:11,052 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52
[2023-11-29 04:31:11,052 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:11,053 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:11,053 INFO  L85        PathProgramCache]: Analyzing trace with hash 918672287, now seen corresponding path program 1 times
[2023-11-29 04:31:11,053 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:11,053 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437876518]
[2023-11-29 04:31:11,054 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:11,054 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:11,739 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:31:11,739 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569200299]
[2023-11-29 04:31:11,740 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:11,740 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:11,740 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:31:11,741 INFO  L229       MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:31:11,742 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2023-11-29 04:31:22,211 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:22,462 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41940 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:31:22,537 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:31:22,754 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked.
[2023-11-29 04:31:22,754 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:31:22,754 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:22,754 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437876518]
[2023-11-29 04:31:22,754 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:31:22,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569200299]
[2023-11-29 04:31:22,755 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [569200299] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:22,755 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:22,756 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:31:22,756 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981666534]
[2023-11-29 04:31:22,756 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:22,759 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:31:22,759 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:22,761 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:31:22,761 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:31:22,762 INFO  L87              Difference]: Start difference. First operand 7526 states and 12470 transitions. Second operand  has 7 states, 7 states have (on average 685.7142857142857) internal successors, (4800), 7 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:23,236 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:23,236 INFO  L93              Difference]: Finished difference Result 21221 states and 35150 transitions.
[2023-11-29 04:31:23,237 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:31:23,238 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 685.7142857142857) internal successors, (4800), 7 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5007
[2023-11-29 04:31:23,241 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:23,252 INFO  L225             Difference]: With dead ends: 21221
[2023-11-29 04:31:23,252 INFO  L226             Difference]: Without dead ends: 14223
[2023-11-29 04:31:23,256 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5016 GetRequests, 5004 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:31:23,257 INFO  L413           NwaCegarLoop]: 12110 mSDtfsCounter, 33102 mSDsluCounter, 47904 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33102 SdHoareTripleChecker+Valid, 60014 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:23,257 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33102 Valid, 60014 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:31:23,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14223 states.
[2023-11-29 04:31:23,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14223 to 7528.
[2023-11-29 04:31:23,334 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7528 states, 7527 states have (on average 1.6569682476418228) internal successors, (12472), 7527 states have internal predecessors, (12472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:23,342 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 12472 transitions.
[2023-11-29 04:31:23,342 INFO  L78                 Accepts]: Start accepts. Automaton has 7528 states and 12472 transitions. Word has length 5007
[2023-11-29 04:31:23,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:23,344 INFO  L495      AbstractCegarLoop]: Abstraction has 7528 states and 12472 transitions.
[2023-11-29 04:31:23,345 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 685.7142857142857) internal successors, (4800), 7 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:23,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 7528 states and 12472 transitions.
[2023-11-29 04:31:23,446 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5009
[2023-11-29 04:31:23,446 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:23,447 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:31:23,555 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0
[2023-11-29 04:31:23,647 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53
[2023-11-29 04:31:23,647 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:23,647 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:23,648 INFO  L85        PathProgramCache]: Analyzing trace with hash -1485349779, now seen corresponding path program 1 times
[2023-11-29 04:31:23,648 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:23,648 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675918334]
[2023-11-29 04:31:23,649 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:23,649 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:24,233 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:31:24,233 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157524122]
[2023-11-29 04:31:24,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:24,234 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:24,234 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:31:24,235 INFO  L229       MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:31:24,236 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process
[2023-11-29 04:31:34,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:34,994 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41943 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:31:35,070 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:31:35,293 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked.
[2023-11-29 04:31:35,293 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:31:35,293 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:35,293 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675918334]
[2023-11-29 04:31:35,293 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:31:35,293 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157524122]
[2023-11-29 04:31:35,293 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [157524122] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:35,293 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:35,295 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:31:35,295 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558294344]
[2023-11-29 04:31:35,295 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:35,297 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:31:35,297 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:35,299 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:31:35,299 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:31:35,300 INFO  L87              Difference]: Start difference. First operand 7528 states and 12472 transitions. Second operand  has 7 states, 7 states have (on average 686.1428571428571) internal successors, (4803), 7 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:35,770 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:35,770 INFO  L93              Difference]: Finished difference Result 21227 states and 35156 transitions.
[2023-11-29 04:31:35,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:31:35,771 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 686.1428571428571) internal successors, (4803), 7 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5008
[2023-11-29 04:31:35,775 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:35,785 INFO  L225             Difference]: With dead ends: 21227
[2023-11-29 04:31:35,785 INFO  L226             Difference]: Without dead ends: 14224
[2023-11-29 04:31:35,790 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5017 GetRequests, 5005 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:31:35,790 INFO  L413           NwaCegarLoop]: 12105 mSDtfsCounter, 33101 mSDsluCounter, 47889 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33101 SdHoareTripleChecker+Valid, 59994 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:35,791 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33101 Valid, 59994 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:31:35,802 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14224 states.
[2023-11-29 04:31:35,864 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14224 to 7530.
[2023-11-29 04:31:35,869 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7530 states, 7529 states have (on average 1.656793730907159) internal successors, (12474), 7529 states have internal predecessors, (12474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:35,877 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 12474 transitions.
[2023-11-29 04:31:35,877 INFO  L78                 Accepts]: Start accepts. Automaton has 7530 states and 12474 transitions. Word has length 5008
[2023-11-29 04:31:35,879 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:35,879 INFO  L495      AbstractCegarLoop]: Abstraction has 7530 states and 12474 transitions.
[2023-11-29 04:31:35,880 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 686.1428571428571) internal successors, (4803), 7 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:35,880 INFO  L276                IsEmpty]: Start isEmpty. Operand 7530 states and 12474 transitions.
[2023-11-29 04:31:35,981 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5010
[2023-11-29 04:31:35,981 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:35,982 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:31:36,090 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0
[2023-11-29 04:31:36,182 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54
[2023-11-29 04:31:36,183 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:36,183 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:36,183 INFO  L85        PathProgramCache]: Analyzing trace with hash -1564172805, now seen corresponding path program 1 times
[2023-11-29 04:31:36,183 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:36,183 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060527477]
[2023-11-29 04:31:36,184 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:36,184 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:36,772 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:31:36,772 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463533672]
[2023-11-29 04:31:36,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:36,773 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:36,773 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:31:36,773 INFO  L229       MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:31:36,774 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2023-11-29 04:31:47,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:47,478 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41947 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:31:47,554 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:31:47,762 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked.
[2023-11-29 04:31:47,762 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:31:47,762 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:47,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060527477]
[2023-11-29 04:31:47,762 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:31:47,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463533672]
[2023-11-29 04:31:47,763 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [463533672] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:47,763 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:47,764 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:31:47,764 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064417011]
[2023-11-29 04:31:47,764 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:47,766 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:31:47,766 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:47,767 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:31:47,768 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:31:47,768 INFO  L87              Difference]: Start difference. First operand 7530 states and 12474 transitions. Second operand  has 7 states, 7 states have (on average 686.5714285714286) internal successors, (4806), 7 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:48,223 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:48,224 INFO  L93              Difference]: Finished difference Result 21233 states and 35162 transitions.
[2023-11-29 04:31:48,224 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:31:48,225 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 686.5714285714286) internal successors, (4806), 7 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5009
[2023-11-29 04:31:48,228 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:48,238 INFO  L225             Difference]: With dead ends: 21233
[2023-11-29 04:31:48,238 INFO  L226             Difference]: Without dead ends: 14225
[2023-11-29 04:31:48,242 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5018 GetRequests, 5006 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:31:48,243 INFO  L413           NwaCegarLoop]: 12100 mSDtfsCounter, 33100 mSDsluCounter, 47874 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33100 SdHoareTripleChecker+Valid, 59974 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:48,243 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33100 Valid, 59974 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:31:48,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14225 states.
[2023-11-29 04:31:48,332 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14225 to 7532.
[2023-11-29 04:31:48,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7532 states, 7531 states have (on average 1.6566193068649582) internal successors, (12476), 7531 states have internal predecessors, (12476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:48,345 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 12476 transitions.
[2023-11-29 04:31:48,345 INFO  L78                 Accepts]: Start accepts. Automaton has 7532 states and 12476 transitions. Word has length 5009
[2023-11-29 04:31:48,348 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:48,348 INFO  L495      AbstractCegarLoop]: Abstraction has 7532 states and 12476 transitions.
[2023-11-29 04:31:48,348 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 686.5714285714286) internal successors, (4806), 7 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:48,349 INFO  L276                IsEmpty]: Start isEmpty. Operand 7532 states and 12476 transitions.
[2023-11-29 04:31:48,584 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5011
[2023-11-29 04:31:48,584 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:48,585 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:31:48,695 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0
[2023-11-29 04:31:48,785 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55
[2023-11-29 04:31:48,785 INFO  L420      AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:48,786 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:48,786 INFO  L85        PathProgramCache]: Analyzing trace with hash 116317717, now seen corresponding path program 1 times
[2023-11-29 04:31:48,786 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:48,786 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747143936]
[2023-11-29 04:31:48,787 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:48,787 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:49,373 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:31:49,373 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541655829]
[2023-11-29 04:31:49,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:49,374 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:49,374 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:31:49,374 INFO  L229       MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:31:49,375 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process
[2023-11-29 04:32:00,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:00,281 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41950 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:32:00,357 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:32:00,577 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked.
[2023-11-29 04:32:00,577 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:32:00,577 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:32:00,577 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747143936]
[2023-11-29 04:32:00,577 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:32:00,577 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541655829]
[2023-11-29 04:32:00,577 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [541655829] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:32:00,577 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:32:00,579 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:32:00,579 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268300721]
[2023-11-29 04:32:00,579 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:32:00,581 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:32:00,581 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:32:00,583 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:32:00,583 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:32:00,584 INFO  L87              Difference]: Start difference. First operand 7532 states and 12476 transitions. Second operand  has 7 states, 7 states have (on average 687.0) internal successors, (4809), 7 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:01,065 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:32:01,065 INFO  L93              Difference]: Finished difference Result 21239 states and 35168 transitions.
[2023-11-29 04:32:01,066 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:32:01,067 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 687.0) internal successors, (4809), 7 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5010
[2023-11-29 04:32:01,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:32:01,080 INFO  L225             Difference]: With dead ends: 21239
[2023-11-29 04:32:01,080 INFO  L226             Difference]: Without dead ends: 14226
[2023-11-29 04:32:01,085 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5019 GetRequests, 5007 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:32:01,085 INFO  L413           NwaCegarLoop]: 12095 mSDtfsCounter, 33099 mSDsluCounter, 47859 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33099 SdHoareTripleChecker+Valid, 59954 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:32:01,085 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33099 Valid, 59954 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:32:01,095 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14226 states.
[2023-11-29 04:32:01,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14226 to 7534.
[2023-11-29 04:32:01,165 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7534 states, 7533 states have (on average 1.6564449754413912) internal successors, (12478), 7533 states have internal predecessors, (12478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:01,173 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7534 states to 7534 states and 12478 transitions.
[2023-11-29 04:32:01,173 INFO  L78                 Accepts]: Start accepts. Automaton has 7534 states and 12478 transitions. Word has length 5010
[2023-11-29 04:32:01,175 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:32:01,175 INFO  L495      AbstractCegarLoop]: Abstraction has 7534 states and 12478 transitions.
[2023-11-29 04:32:01,176 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 687.0) internal successors, (4809), 7 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:01,176 INFO  L276                IsEmpty]: Start isEmpty. Operand 7534 states and 12478 transitions.
[2023-11-29 04:32:01,383 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5012
[2023-11-29 04:32:01,384 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:32:01,384 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:32:01,492 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0
[2023-11-29 04:32:01,585 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56
[2023-11-29 04:32:01,585 INFO  L420      AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:32:01,585 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:32:01,586 INFO  L85        PathProgramCache]: Analyzing trace with hash -62376235, now seen corresponding path program 1 times
[2023-11-29 04:32:01,586 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:32:01,586 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642875768]
[2023-11-29 04:32:01,586 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:01,586 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:32:02,200 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:32:02,200 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908889369]
[2023-11-29 04:32:02,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:02,201 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:02,201 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:32:02,202 INFO  L229       MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:32:02,203 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2023-11-29 04:32:12,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:12,830 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41953 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:32:12,905 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:32:13,127 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked.
[2023-11-29 04:32:13,127 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:32:13,127 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:32:13,127 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642875768]
[2023-11-29 04:32:13,127 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:32:13,127 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908889369]
[2023-11-29 04:32:13,127 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [908889369] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:32:13,127 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:32:13,129 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:32:13,129 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207945711]
[2023-11-29 04:32:13,129 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:32:13,132 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:32:13,132 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:32:13,134 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:32:13,134 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:32:13,134 INFO  L87              Difference]: Start difference. First operand 7534 states and 12478 transitions. Second operand  has 7 states, 7 states have (on average 687.4285714285714) internal successors, (4812), 7 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:13,703 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:32:13,703 INFO  L93              Difference]: Finished difference Result 21245 states and 35174 transitions.
[2023-11-29 04:32:13,704 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:32:13,705 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 687.4285714285714) internal successors, (4812), 7 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5011
[2023-11-29 04:32:13,708 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:32:13,718 INFO  L225             Difference]: With dead ends: 21245
[2023-11-29 04:32:13,718 INFO  L226             Difference]: Without dead ends: 14227
[2023-11-29 04:32:13,723 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5020 GetRequests, 5008 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:32:13,723 INFO  L413           NwaCegarLoop]: 12090 mSDtfsCounter, 33098 mSDsluCounter, 47844 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33098 SdHoareTripleChecker+Valid, 59934 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:32:13,723 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33098 Valid, 59934 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:32:13,734 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14227 states.
[2023-11-29 04:32:13,800 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14227 to 7536.
[2023-11-29 04:32:13,806 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7536 states, 7535 states have (on average 1.6562707365627074) internal successors, (12480), 7535 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:13,813 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7536 states to 7536 states and 12480 transitions.
[2023-11-29 04:32:13,813 INFO  L78                 Accepts]: Start accepts. Automaton has 7536 states and 12480 transitions. Word has length 5011
[2023-11-29 04:32:13,816 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:32:13,816 INFO  L495      AbstractCegarLoop]: Abstraction has 7536 states and 12480 transitions.
[2023-11-29 04:32:13,817 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 687.4285714285714) internal successors, (4812), 7 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:13,817 INFO  L276                IsEmpty]: Start isEmpty. Operand 7536 states and 12480 transitions.
[2023-11-29 04:32:13,918 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5013
[2023-11-29 04:32:13,918 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:32:13,919 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:32:14,034 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0
[2023-11-29 04:32:14,119 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57
[2023-11-29 04:32:14,120 INFO  L420      AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:32:14,120 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:32:14,121 INFO  L85        PathProgramCache]: Analyzing trace with hash 1946174011, now seen corresponding path program 1 times
[2023-11-29 04:32:14,121 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:32:14,121 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031159916]
[2023-11-29 04:32:14,122 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:14,122 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:32:14,810 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:32:14,810 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872797152]
[2023-11-29 04:32:14,811 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:14,811 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:14,811 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:32:14,812 INFO  L229       MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:32:14,814 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2023-11-29 04:32:26,145 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:26,453 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41956 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:32:26,537 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:32:26,770 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked.
[2023-11-29 04:32:26,770 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:32:26,770 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:32:26,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031159916]
[2023-11-29 04:32:26,770 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:32:26,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872797152]
[2023-11-29 04:32:26,770 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872797152] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:32:26,770 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:32:26,772 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:32:26,772 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990112715]
[2023-11-29 04:32:26,772 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:32:26,774 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:32:26,774 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:32:26,777 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:32:26,777 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:32:26,778 INFO  L87              Difference]: Start difference. First operand 7536 states and 12480 transitions. Second operand  has 7 states, 7 states have (on average 687.8571428571429) internal successors, (4815), 7 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:27,402 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:32:27,402 INFO  L93              Difference]: Finished difference Result 21251 states and 35180 transitions.
[2023-11-29 04:32:27,403 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:32:27,404 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 687.8571428571429) internal successors, (4815), 7 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5012
[2023-11-29 04:32:27,407 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:32:27,417 INFO  L225             Difference]: With dead ends: 21251
[2023-11-29 04:32:27,417 INFO  L226             Difference]: Without dead ends: 14228
[2023-11-29 04:32:27,421 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5021 GetRequests, 5009 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:32:27,422 INFO  L413           NwaCegarLoop]: 12085 mSDtfsCounter, 33097 mSDsluCounter, 47829 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33097 SdHoareTripleChecker+Valid, 59914 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 04:32:27,422 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33097 Valid, 59914 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 04:32:27,432 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14228 states.
[2023-11-29 04:32:27,496 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14228 to 7538.
[2023-11-29 04:32:27,501 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7538 states, 7537 states have (on average 1.6560965901552342) internal successors, (12482), 7537 states have internal predecessors, (12482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:27,509 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7538 states to 7538 states and 12482 transitions.
[2023-11-29 04:32:27,509 INFO  L78                 Accepts]: Start accepts. Automaton has 7538 states and 12482 transitions. Word has length 5012
[2023-11-29 04:32:27,511 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:32:27,511 INFO  L495      AbstractCegarLoop]: Abstraction has 7538 states and 12482 transitions.
[2023-11-29 04:32:27,512 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 687.8571428571429) internal successors, (4815), 7 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:27,512 INFO  L276                IsEmpty]: Start isEmpty. Operand 7538 states and 12482 transitions.
[2023-11-29 04:32:27,613 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5014
[2023-11-29 04:32:27,613 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:32:27,613 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 04:32:27,728 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0
[2023-11-29 04:32:27,814 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58
[2023-11-29 04:32:27,814 INFO  L420      AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:32:27,814 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:32:27,815 INFO  L85        PathProgramCache]: Analyzing trace with hash 1131104817, now seen corresponding path program 1 times
[2023-11-29 04:32:27,815 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:32:27,815 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562701220]
[2023-11-29 04:32:27,815 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:27,815 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:32:28,402 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:32:28,403 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73476392]
[2023-11-29 04:32:28,403 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:28,404 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:28,404 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:32:28,404 INFO  L229       MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:32:28,405 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process
[2023-11-29 04:32:39,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:40,219 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41960 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 04:32:40,300 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:32:40,542 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked.
[2023-11-29 04:32:40,542 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:32:40,542 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:32:40,542 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562701220]
[2023-11-29 04:32:40,542 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:32:40,542 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73476392]
[2023-11-29 04:32:40,542 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [73476392] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:32:40,542 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:32:40,543 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:32:40,543 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139423664]
[2023-11-29 04:32:40,543 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:32:40,545 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:32:40,545 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:32:40,547 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:32:40,547 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:32:40,548 INFO  L87              Difference]: Start difference. First operand 7538 states and 12482 transitions. Second operand  has 7 states, 7 states have (on average 688.2857142857143) internal successors, (4818), 7 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:41,056 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:32:41,056 INFO  L93              Difference]: Finished difference Result 21257 states and 35186 transitions.
[2023-11-29 04:32:41,056 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 04:32:41,057 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 688.2857142857143) internal successors, (4818), 7 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5013
[2023-11-29 04:32:41,060 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:32:41,071 INFO  L225             Difference]: With dead ends: 21257
[2023-11-29 04:32:41,071 INFO  L226             Difference]: Without dead ends: 14229
[2023-11-29 04:32:41,076 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5022 GetRequests, 5010 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:32:41,077 INFO  L413           NwaCegarLoop]: 12080 mSDtfsCounter, 33096 mSDsluCounter, 47814 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33096 SdHoareTripleChecker+Valid, 59894 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:32:41,077 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33096 Valid, 59894 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:32:41,088 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14229 states.
[2023-11-29 04:32:41,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14229 to 7540.
[2023-11-29 04:32:41,166 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7540 states, 7539 states have (on average 1.6559225361453773) internal successors, (12484), 7539 states have internal predecessors, (12484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:41,174 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7540 states to 7540 states and 12484 transitions.
[2023-11-29 04:32:41,174 INFO  L78                 Accepts]: Start accepts. Automaton has 7540 states and 12484 transitions. Word has length 5013
[2023-11-29 04:32:41,176 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:32:41,176 INFO  L495      AbstractCegarLoop]: Abstraction has 7540 states and 12484 transitions.
[2023-11-29 04:32:41,177 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 688.2857142857143) internal successors, (4818), 7 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:41,177 INFO  L276                IsEmpty]: Start isEmpty. Operand 7540 states and 12484 transitions.
[2023-11-29 04:32:41,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5015
[2023-11-29 04:32:41,279 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:32:41,280 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:41,403 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0
[2023-11-29 04:32:41,480 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2023-11-29 04:32:41,480 INFO  L420      AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:32:41,480 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:32:41,482 INFO  L85        PathProgramCache]: Analyzing trace with hash -1368394525, now seen corresponding path program 1 times
[2023-11-29 04:32:41,482 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:32:41,482 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768877841]
[2023-11-29 04:32:41,483 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:41,483 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:32:42,246 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:32:42,246 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464945899]
[2023-11-29 04:32:42,247 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:42,247 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:42,247 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:32:42,248 INFO  L229       MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:32:42,248 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4153f0-8b20-43ce-a2fd-0081b20e30ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2023-11-29 04:32:53,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:53,384 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41963 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 04:32:53,466 INFO  L285         TraceCheckSpWp]: Computing forward predicates...