./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version e7bb482b
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 59a51494e44542a55e0efd5b7238524ccc4e20c79b0ec6f03f7167fd13a5d201
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 22:40:36,700 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 22:40:36,774 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 22:40:36,780 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 22:40:36,781 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 22:40:36,808 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 22:40:36,809 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 22:40:36,810 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 22:40:36,811 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 22:40:36,811 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 22:40:36,812 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 22:40:36,813 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 22:40:36,813 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 22:40:36,814 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 22:40:36,814 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 22:40:36,815 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 22:40:36,815 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 22:40:36,816 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 22:40:36,816 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 22:40:36,817 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 22:40:36,817 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 22:40:36,818 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 22:40:36,819 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 22:40:36,819 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 22:40:36,820 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 22:40:36,820 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:40:36,821 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 22:40:36,821 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 22:40:36,821 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 22:40:36,822 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 22:40:36,822 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 22:40:36,823 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 22:40:36,823 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 22:40:36,823 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 22:40:36,824 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 22:40:36,824 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 22:40:36,824 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_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/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_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
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 -> 59a51494e44542a55e0efd5b7238524ccc4e20c79b0ec6f03f7167fd13a5d201
[2023-11-06 22:40:37,084 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 22:40:37,107 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 22:40:37,110 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 22:40:37,112 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 22:40:37,113 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 22:40:37,114 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c
[2023-11-06 22:40:40,394 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 22:40:40,866 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 22:40:40,867 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c
[2023-11-06 22:40:40,897 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/data/1ec988d0b/b86abb5a1ada43eb88c7f58ec5c2d41e/FLAGcbd42a88c
[2023-11-06 22:40:40,913 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/data/1ec988d0b/b86abb5a1ada43eb88c7f58ec5c2d41e
[2023-11-06 22:40:40,916 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 22:40:40,918 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 22:40:40,919 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 22:40:40,920 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 22:40:40,931 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 22:40:40,932 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:40" (1/1) ...
[2023-11-06 22:40:40,934 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7449862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:40, skipping insertion in model container
[2023-11-06 22:40:40,934 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:40" (1/1) ...
[2023-11-06 22:40:41,096 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 22:40:41,434 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_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c[1177,1190]
[2023-11-06 22:40:42,509 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:40:42,520 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 22:40:42,532 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_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c[1177,1190]
[2023-11-06 22:40:43,204 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:40:43,234 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 22:40:43,251 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43 WrapperNode
[2023-11-06 22:40:43,251 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 22:40:43,252 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 22:40:43,253 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 22:40:43,253 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 22:40:43,261 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:43,630 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:47,180 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28653
[2023-11-06 22:40:47,180 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 22:40:47,181 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 22:40:47,181 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 22:40:47,182 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 22:40:47,192 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:47,192 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:48,186 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:48,186 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:49,417 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:49,569 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:49,733 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:49,835 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:50,275 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 22:40:50,276 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 22:40:50,276 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 22:40:50,276 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 22:40:50,277 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ...
[2023-11-06 22:40:50,286 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:40:50,301 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:40:50,322 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 22:40:50,351 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 22:40:50,361 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 22:40:50,362 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 22:40:50,363 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 22:40:50,363 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 22:40:51,977 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 22:40:51,979 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 22:41:10,240 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 22:41:10,282 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 22:41:10,282 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 22:41:10,290 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:10 BoogieIcfgContainer
[2023-11-06 22:41:10,290 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 22:41:10,293 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 22:41:10,293 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 22:41:10,297 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 22:41:10,297 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:40:40" (1/3) ...
[2023-11-06 22:41:10,298 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d58bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:10, skipping insertion in model container
[2023-11-06 22:41:10,298 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (2/3) ...
[2023-11-06 22:41:10,299 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d58bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:10, skipping insertion in model container
[2023-11-06 22:41:10,299 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:10" (3/3) ...
[2023-11-06 22:41:10,300 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.4.prop1-back-serstep.c
[2023-11-06 22:41:10,320 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 22:41:10,321 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 22:41:10,522 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 22:41:10,531 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=LoopsAndPotentialCycles, 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;@3b7640f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 22:41:10,532 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 22:41:10,557 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6593 states, 6591 states have (on average 1.6700045516613564) internal successors, (11007), 6592 states have internal predecessors, (11007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:10,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 700
[2023-11-06 22:41:10,621 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:10,623 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 22:41:10,624 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:10,631 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:10,632 INFO  L85        PathProgramCache]: Analyzing trace with hash -107567264, now seen corresponding path program 1 times
[2023-11-06 22:41:10,642 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:10,643 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901021078]
[2023-11-06 22:41:10,644 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:10,644 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:11,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:15,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:15,209 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:15,210 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901021078]
[2023-11-06 22:41:15,210 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901021078] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:15,211 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:15,211 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:41:15,212 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363059110]
[2023-11-06 22:41:15,213 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:15,222 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:41:15,223 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:15,263 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:41:15,264 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:15,284 INFO  L87              Difference]: Start difference. First operand  has 6593 states, 6591 states have (on average 1.6700045516613564) internal successors, (11007), 6592 states have internal predecessors, (11007), 0 states have call successors, (0), 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 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:15,747 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:15,747 INFO  L93              Difference]: Finished difference Result 12960 states and 21642 transitions.
[2023-11-06 22:41:15,748 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:41:15,750 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 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 699
[2023-11-06 22:41:15,757 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:15,820 INFO  L225             Difference]: With dead ends: 12960
[2023-11-06 22:41:15,821 INFO  L226             Difference]: Without dead ends: 6591
[2023-11-06 22:41:15,839 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
[2023-11-06 22:41:15,844 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 1 mSDsluCounter, 21992 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32991 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:41:15,845 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32991 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:41:15,878 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6591 states.
[2023-11-06 22:41:16,046 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6591.
[2023-11-06 22:41:16,063 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6591 states, 6590 states have (on average 1.6696509863429438) internal successors, (11003), 6590 states have internal predecessors, (11003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:16,089 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 11003 transitions.
[2023-11-06 22:41:16,090 INFO  L78                 Accepts]: Start accepts. Automaton has 6591 states and 11003 transitions. Word has length 699
[2023-11-06 22:41:16,093 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:16,094 INFO  L495      AbstractCegarLoop]: Abstraction has 6591 states and 11003 transitions.
[2023-11-06 22:41:16,095 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:16,095 INFO  L276                IsEmpty]: Start isEmpty. Operand 6591 states and 11003 transitions.
[2023-11-06 22:41:16,114 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 701
[2023-11-06 22:41:16,114 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:16,115 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 22:41:16,115 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 22:41:16,116 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:16,117 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:16,118 INFO  L85        PathProgramCache]: Analyzing trace with hash 962111224, now seen corresponding path program 1 times
[2023-11-06 22:41:16,118 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:16,118 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187396692]
[2023-11-06 22:41:16,118 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:16,119 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:16,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:18,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:18,172 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:18,175 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187396692]
[2023-11-06 22:41:18,175 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187396692] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:18,176 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:18,176 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:41:18,177 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138118191]
[2023-11-06 22:41:18,177 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:18,180 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:41:18,180 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:18,182 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:41:18,182 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:18,183 INFO  L87              Difference]: Start difference. First operand 6591 states and 11003 transitions. Second operand  has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:18,515 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:18,516 INFO  L93              Difference]: Finished difference Result 12961 states and 21638 transitions.
[2023-11-06 22:41:18,516 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:41:18,517 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 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 700
[2023-11-06 22:41:18,519 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:18,553 INFO  L225             Difference]: With dead ends: 12961
[2023-11-06 22:41:18,554 INFO  L226             Difference]: Without dead ends: 6594
[2023-11-06 22:41:18,562 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
[2023-11-06 22:41:18,563 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 1 mSDsluCounter, 21989 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32988 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:41:18,564 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32988 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:41:18,579 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6594 states.
[2023-11-06 22:41:18,690 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6594 to 6593.
[2023-11-06 22:41:18,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6593 states, 6592 states have (on average 1.6694478155339805) internal successors, (11005), 6592 states have internal predecessors, (11005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:18,733 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6593 states to 6593 states and 11005 transitions.
[2023-11-06 22:41:18,733 INFO  L78                 Accepts]: Start accepts. Automaton has 6593 states and 11005 transitions. Word has length 700
[2023-11-06 22:41:18,735 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:18,735 INFO  L495      AbstractCegarLoop]: Abstraction has 6593 states and 11005 transitions.
[2023-11-06 22:41:18,736 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:18,736 INFO  L276                IsEmpty]: Start isEmpty. Operand 6593 states and 11005 transitions.
[2023-11-06 22:41:18,754 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 702
[2023-11-06 22:41:18,755 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:18,755 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 22:41:18,756 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 22:41:18,756 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:18,756 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:18,757 INFO  L85        PathProgramCache]: Analyzing trace with hash 1325255932, now seen corresponding path program 1 times
[2023-11-06 22:41:18,757 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:18,757 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746669964]
[2023-11-06 22:41:18,757 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:18,758 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:19,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:20,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:20,892 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:20,892 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746669964]
[2023-11-06 22:41:20,892 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746669964] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:20,892 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:20,893 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:41:20,893 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916336843]
[2023-11-06 22:41:20,893 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:20,894 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:41:20,895 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:20,896 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:41:20,896 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:41:20,897 INFO  L87              Difference]: Start difference. First operand 6593 states and 11005 transitions. Second operand  has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:21,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:21,579 INFO  L93              Difference]: Finished difference Result 20137 states and 33616 transitions.
[2023-11-06 22:41:21,579 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:41:21,580 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 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 701
[2023-11-06 22:41:21,581 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:21,665 INFO  L225             Difference]: With dead ends: 20137
[2023-11-06 22:41:21,665 INFO  L226             Difference]: Without dead ends: 13768
[2023-11-06 22:41:21,679 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-06 22:41:21,683 INFO  L413           NwaCegarLoop]: 12353 mSDtfsCounter, 43527 mSDsluCounter, 21991 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43527 SdHoareTripleChecker+Valid, 34344 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:41:21,684 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43527 Valid, 34344 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:41:21,710 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13768 states.
[2023-11-06 22:41:21,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13768 to 7408.
[2023-11-06 22:41:21,906 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7408 states, 7407 states have (on average 1.6689617928986094) internal successors, (12362), 7407 states have internal predecessors, (12362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:21,938 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7408 states to 7408 states and 12362 transitions.
[2023-11-06 22:41:21,939 INFO  L78                 Accepts]: Start accepts. Automaton has 7408 states and 12362 transitions. Word has length 701
[2023-11-06 22:41:21,940 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:21,941 INFO  L495      AbstractCegarLoop]: Abstraction has 7408 states and 12362 transitions.
[2023-11-06 22:41:21,942 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:21,946 INFO  L276                IsEmpty]: Start isEmpty. Operand 7408 states and 12362 transitions.
[2023-11-06 22:41:22,671 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:41:22,672 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:22,675 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:41:22,676 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 22:41:22,677 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:22,679 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:22,681 INFO  L85        PathProgramCache]: Analyzing trace with hash 1511154118, now seen corresponding path program 1 times
[2023-11-06 22:41:22,682 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:22,689 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461135427]
[2023-11-06 22:41:22,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:22,691 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:23,416 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:41:23,417 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784864183]
[2023-11-06 22:41:23,418 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:23,419 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:23,419 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:41:23,423 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:41:23,465 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 22:41:30,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:30,408 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21297 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:41:30,725 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:41:30,988 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:30,988 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:41:30,988 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:30,989 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461135427]
[2023-11-06 22:41:30,989 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:41:30,989 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784864183]
[2023-11-06 22:41:30,989 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784864183] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:30,990 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:30,991 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:41:30,994 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46425886]
[2023-11-06 22:41:30,994 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:31,001 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:41:31,002 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:31,010 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:41:31,010 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:31,013 INFO  L87              Difference]: Start difference. First operand 7408 states and 12362 transitions. Second operand  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:31,342 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:31,342 INFO  L93              Difference]: Finished difference Result 13787 states and 23011 transitions.
[2023-11-06 22:41:31,343 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:41:31,346 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 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 4824
[2023-11-06 22:41:31,348 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:31,363 INFO  L225             Difference]: With dead ends: 13787
[2023-11-06 22:41:31,363 INFO  L226             Difference]: Without dead ends: 7418
[2023-11-06 22:41:31,372 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4821 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:31,380 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 12 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32985 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:41:31,382 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32985 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:41:31,401 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7418 states.
[2023-11-06 22:41:31,535 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7418 to 7410.
[2023-11-06 22:41:31,548 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7410 states, 7409 states have (on average 1.6687812120394114) internal successors, (12364), 7409 states have internal predecessors, (12364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:31,568 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7410 states to 7410 states and 12364 transitions.
[2023-11-06 22:41:31,568 INFO  L78                 Accepts]: Start accepts. Automaton has 7410 states and 12364 transitions. Word has length 4824
[2023-11-06 22:41:31,572 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:31,572 INFO  L495      AbstractCegarLoop]: Abstraction has 7410 states and 12364 transitions.
[2023-11-06 22:41:31,575 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:31,575 INFO  L276                IsEmpty]: Start isEmpty. Operand 7410 states and 12364 transitions.
[2023-11-06 22:41:31,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:41:31,816 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:31,820 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:41:31,899 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-06 22:41:32,034 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:32,035 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:32,035 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:32,037 INFO  L85        PathProgramCache]: Analyzing trace with hash -1915630060, now seen corresponding path program 1 times
[2023-11-06 22:41:32,038 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:32,038 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579270453]
[2023-11-06 22:41:32,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:32,039 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:32,737 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:41:32,737 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459957275]
[2023-11-06 22:41:32,739 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:32,739 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:32,739 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:41:32,740 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:41:32,763 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-06 22:41:39,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:39,621 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21298 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:41:39,792 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:41:40,053 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:40,054 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:41:40,054 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:40,054 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579270453]
[2023-11-06 22:41:40,054 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:41:40,055 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459957275]
[2023-11-06 22:41:40,055 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [459957275] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:40,055 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:40,057 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:41:40,057 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092544162]
[2023-11-06 22:41:40,057 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:40,066 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:41:40,066 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:40,075 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:41:40,075 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:40,078 INFO  L87              Difference]: Start difference. First operand 7410 states and 12364 transitions. Second operand  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:40,493 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:40,493 INFO  L93              Difference]: Finished difference Result 13790 states and 23013 transitions.
[2023-11-06 22:41:40,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:41:40,497 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 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 4824
[2023-11-06 22:41:40,500 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:40,514 INFO  L225             Difference]: With dead ends: 13790
[2023-11-06 22:41:40,515 INFO  L226             Difference]: Without dead ends: 7419
[2023-11-06 22:41:40,522 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4821 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:40,523 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 12 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32985 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
[2023-11-06 22:41:40,523 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32985 Invalid, 16 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:41:40,535 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7419 states.
[2023-11-06 22:41:40,641 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7419 to 7411.
[2023-11-06 22:41:40,652 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7411 states, 7410 states have (on average 1.6686909581646423) internal successors, (12365), 7410 states have internal predecessors, (12365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:40,672 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 12365 transitions.
[2023-11-06 22:41:40,672 INFO  L78                 Accepts]: Start accepts. Automaton has 7411 states and 12365 transitions. Word has length 4824
[2023-11-06 22:41:40,675 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:40,675 INFO  L495      AbstractCegarLoop]: Abstraction has 7411 states and 12365 transitions.
[2023-11-06 22:41:40,676 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:40,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 7411 states and 12365 transitions.
[2023-11-06 22:41:40,880 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:41:40,880 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:40,882 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:41:40,943 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-06 22:41:41,083 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:41,083 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:41,084 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:41,085 INFO  L85        PathProgramCache]: Analyzing trace with hash -237150878, now seen corresponding path program 1 times
[2023-11-06 22:41:41,085 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:41,086 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533773241]
[2023-11-06 22:41:41,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:41,087 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:41,682 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:41:41,683 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785405805]
[2023-11-06 22:41:41,684 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:41,685 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:41,685 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:41:41,686 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:41:41,707 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-06 22:41:48,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:48,296 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21299 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:41:48,379 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:41:48,621 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:48,621 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:41:48,621 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:48,622 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533773241]
[2023-11-06 22:41:48,622 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:41:48,622 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785405805]
[2023-11-06 22:41:48,622 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [785405805] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:48,622 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:48,624 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:41:48,624 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895986456]
[2023-11-06 22:41:48,624 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:48,631 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:41:48,631 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:48,638 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:41:48,638 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:48,640 INFO  L87              Difference]: Start difference. First operand 7411 states and 12365 transitions. Second operand  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:48,944 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:48,944 INFO  L93              Difference]: Finished difference Result 13792 states and 23015 transitions.
[2023-11-06 22:41:48,945 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:41:48,947 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 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 4824
[2023-11-06 22:41:48,950 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:48,965 INFO  L225             Difference]: With dead ends: 13792
[2023-11-06 22:41:48,965 INFO  L226             Difference]: Without dead ends: 7420
[2023-11-06 22:41:48,973 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4821 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:48,974 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 12 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32985 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:41:48,975 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32985 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:41:48,989 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7420 states.
[2023-11-06 22:41:49,109 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 7412.
[2023-11-06 22:41:49,121 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7412 states, 7411 states have (on average 1.6686007286466065) internal successors, (12366), 7411 states have internal predecessors, (12366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:49,153 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 12366 transitions.
[2023-11-06 22:41:49,153 INFO  L78                 Accepts]: Start accepts. Automaton has 7412 states and 12366 transitions. Word has length 4824
[2023-11-06 22:41:49,156 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:49,156 INFO  L495      AbstractCegarLoop]: Abstraction has 7412 states and 12366 transitions.
[2023-11-06 22:41:49,158 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:49,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 7412 states and 12366 transitions.
[2023-11-06 22:41:49,402 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:41:49,403 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:49,406 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:41:49,493 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-06 22:41:49,627 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:49,627 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:49,628 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:49,629 INFO  L85        PathProgramCache]: Analyzing trace with hash 152000176, now seen corresponding path program 1 times
[2023-11-06 22:41:49,630 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:49,630 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783493550]
[2023-11-06 22:41:49,630 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:49,631 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:50,127 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:41:50,127 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681001778]
[2023-11-06 22:41:50,129 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:50,129 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:50,130 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:41:50,131 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:41:50,132 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-06 22:41:56,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:56,706 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21300 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:41:56,772 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:41:56,925 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:56,926 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:41:56,926 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:56,926 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783493550]
[2023-11-06 22:41:56,926 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:41:56,926 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681001778]
[2023-11-06 22:41:56,927 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681001778] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:56,927 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:56,928 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:41:56,929 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278310675]
[2023-11-06 22:41:56,929 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:56,935 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:41:56,936 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:56,942 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:41:56,943 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:56,945 INFO  L87              Difference]: Start difference. First operand 7412 states and 12366 transitions. Second operand  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:57,200 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:57,200 INFO  L93              Difference]: Finished difference Result 13794 states and 23017 transitions.
[2023-11-06 22:41:57,201 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:41:57,203 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 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 4824
[2023-11-06 22:41:57,206 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:57,220 INFO  L225             Difference]: With dead ends: 13794
[2023-11-06 22:41:57,220 INFO  L226             Difference]: Without dead ends: 7421
[2023-11-06 22:41:57,228 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4821 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:57,229 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 12 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32985 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:41:57,230 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32985 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:41:57,242 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7421 states.
[2023-11-06 22:41:57,465 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7421 to 7413.
[2023-11-06 22:41:57,477 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7413 states, 7412 states have (on average 1.6685105234754452) internal successors, (12367), 7412 states have internal predecessors, (12367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:57,497 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 12367 transitions.
[2023-11-06 22:41:57,497 INFO  L78                 Accepts]: Start accepts. Automaton has 7413 states and 12367 transitions. Word has length 4824
[2023-11-06 22:41:57,500 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:57,501 INFO  L495      AbstractCegarLoop]: Abstraction has 7413 states and 12367 transitions.
[2023-11-06 22:41:57,502 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:41:57,502 INFO  L276                IsEmpty]: Start isEmpty. Operand 7413 states and 12367 transitions.
[2023-11-06 22:41:57,666 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:41:57,667 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:57,670 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:41:57,743 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-06 22:41:57,895 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-11-06 22:41:57,895 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:57,895 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:57,897 INFO  L85        PathProgramCache]: Analyzing trace with hash -1679537666, now seen corresponding path program 1 times
[2023-11-06 22:41:57,897 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:57,897 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429696844]
[2023-11-06 22:41:57,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:57,898 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:58,395 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:41:58,396 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216860093]
[2023-11-06 22:41:58,397 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:58,397 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:58,398 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:41:58,399 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:41:58,419 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-06 22:42:04,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:42:04,887 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21301 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:42:05,137 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:42:05,295 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:42:05,295 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:42:05,296 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:42:05,296 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429696844]
[2023-11-06 22:42:05,296 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:42:05,296 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216860093]
[2023-11-06 22:42:05,296 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [216860093] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:42:05,296 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:42:05,298 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:42:05,298 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889996278]
[2023-11-06 22:42:05,299 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:42:05,305 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:42:05,305 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:42:05,312 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:42:05,312 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:05,315 INFO  L87              Difference]: Start difference. First operand 7413 states and 12367 transitions. Second operand  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:05,537 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:42:05,538 INFO  L93              Difference]: Finished difference Result 13796 states and 23019 transitions.
[2023-11-06 22:42:05,538 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:42:05,540 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 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 4824
[2023-11-06 22:42:05,544 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:42:05,558 INFO  L225             Difference]: With dead ends: 13796
[2023-11-06 22:42:05,558 INFO  L226             Difference]: Without dead ends: 7422
[2023-11-06 22:42:05,566 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4821 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:05,568 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 12 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32985 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:42:05,568 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32985 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:42:05,580 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7422 states.
[2023-11-06 22:42:05,679 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7422 to 7414.
[2023-11-06 22:42:05,688 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7414 states, 7413 states have (on average 1.6684203426413058) internal successors, (12368), 7413 states have internal predecessors, (12368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:05,705 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7414 states to 7414 states and 12368 transitions.
[2023-11-06 22:42:05,705 INFO  L78                 Accepts]: Start accepts. Automaton has 7414 states and 12368 transitions. Word has length 4824
[2023-11-06 22:42:05,708 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:42:05,708 INFO  L495      AbstractCegarLoop]: Abstraction has 7414 states and 12368 transitions.
[2023-11-06 22:42:05,710 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:05,711 INFO  L276                IsEmpty]: Start isEmpty. Operand 7414 states and 12368 transitions.
[2023-11-06 22:42:05,920 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:42:05,920 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:42:05,924 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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[2023-11-06 22:42:05,995 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-06 22:42:06,139 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2023-11-06 22:42:06,139 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:42:06,140 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:42:06,141 INFO  L85        PathProgramCache]: Analyzing trace with hash -1997367988, now seen corresponding path program 1 times
[2023-11-06 22:42:06,141 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:42:06,141 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746375299]
[2023-11-06 22:42:06,143 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:06,143 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:42:06,639 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:42:06,639 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43215867]
[2023-11-06 22:42:06,640 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:06,641 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:42:06,641 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:42:06,643 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:42:06,667 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-06 22:42:13,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:42:13,133 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21302 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:42:13,189 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:42:13,343 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:42:13,343 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:42:13,343 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:42:13,343 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746375299]
[2023-11-06 22:42:13,344 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:42:13,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43215867]
[2023-11-06 22:42:13,344 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [43215867] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:42:13,344 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:42:13,346 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:42:13,346 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999070688]
[2023-11-06 22:42:13,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:42:13,351 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:42:13,351 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:42:13,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:42:13,358 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:13,360 INFO  L87              Difference]: Start difference. First operand 7414 states and 12368 transitions. Second operand  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:13,572 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:42:13,572 INFO  L93              Difference]: Finished difference Result 13798 states and 23021 transitions.
[2023-11-06 22:42:13,573 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:42:13,575 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 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 4824
[2023-11-06 22:42:13,578 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:42:13,589 INFO  L225             Difference]: With dead ends: 13798
[2023-11-06 22:42:13,590 INFO  L226             Difference]: Without dead ends: 7423
[2023-11-06 22:42:13,597 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4821 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:13,599 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 12 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32985 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:42:13,600 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32985 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:42:13,611 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7423 states.
[2023-11-06 22:42:13,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 7415.
[2023-11-06 22:42:13,710 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7415 states, 7414 states have (on average 1.6683301861343405) internal successors, (12369), 7414 states have internal predecessors, (12369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:13,726 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7415 states to 7415 states and 12369 transitions.
[2023-11-06 22:42:13,726 INFO  L78                 Accepts]: Start accepts. Automaton has 7415 states and 12369 transitions. Word has length 4824
[2023-11-06 22:42:13,729 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:42:13,729 INFO  L495      AbstractCegarLoop]: Abstraction has 7415 states and 12369 transitions.
[2023-11-06 22:42:13,730 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:13,731 INFO  L276                IsEmpty]: Start isEmpty. Operand 7415 states and 12369 transitions.
[2023-11-06 22:42:14,117 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:42:14,118 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:42:14,122 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:42:14,193 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-06 22:42:14,335 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-06 22:42:14,335 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:42:14,336 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:42:14,337 INFO  L85        PathProgramCache]: Analyzing trace with hash -54622566, now seen corresponding path program 1 times
[2023-11-06 22:42:14,338 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:42:14,338 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668325198]
[2023-11-06 22:42:14,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:14,338 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:42:14,842 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:42:14,843 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034348868]
[2023-11-06 22:42:14,844 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:14,844 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:42:14,845 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:42:14,846 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:42:14,867 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-06 22:42:21,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:42:21,451 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21303 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:42:21,510 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:42:21,650 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:42:21,650 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:42:21,650 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:42:21,650 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668325198]
[2023-11-06 22:42:21,650 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:42:21,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034348868]
[2023-11-06 22:42:21,651 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034348868] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:42:21,651 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:42:21,652 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:42:21,653 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122480437]
[2023-11-06 22:42:21,653 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:42:21,658 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:42:21,658 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:42:21,664 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:42:21,664 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:21,666 INFO  L87              Difference]: Start difference. First operand 7415 states and 12369 transitions. Second operand  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:21,862 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:42:21,862 INFO  L93              Difference]: Finished difference Result 13800 states and 23023 transitions.
[2023-11-06 22:42:21,863 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:42:21,864 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 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 4824
[2023-11-06 22:42:21,869 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:42:21,896 INFO  L225             Difference]: With dead ends: 13800
[2023-11-06 22:42:21,897 INFO  L226             Difference]: Without dead ends: 7424
[2023-11-06 22:42:21,907 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4821 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:21,907 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 12 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32985 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:42:21,909 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32985 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:42:21,921 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7424 states.
[2023-11-06 22:42:22,141 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7424 to 7416.
[2023-11-06 22:42:22,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7416 states, 7415 states have (on average 1.6682400539447066) internal successors, (12370), 7415 states have internal predecessors, (12370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:22,162 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7416 states to 7416 states and 12370 transitions.
[2023-11-06 22:42:22,163 INFO  L78                 Accepts]: Start accepts. Automaton has 7416 states and 12370 transitions. Word has length 4824
[2023-11-06 22:42:22,166 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:42:22,166 INFO  L495      AbstractCegarLoop]: Abstraction has 7416 states and 12370 transitions.
[2023-11-06 22:42:22,167 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:22,167 INFO  L276                IsEmpty]: Start isEmpty. Operand 7416 states and 12370 transitions.
[2023-11-06 22:42:22,309 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:42:22,310 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:42:22,312 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:42:22,373 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-11-06 22:42:22,513 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-06 22:42:22,513 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:42:22,514 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:42:22,516 INFO  L85        PathProgramCache]: Analyzing trace with hash -428558104, now seen corresponding path program 1 times
[2023-11-06 22:42:22,516 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:42:22,516 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891125688]
[2023-11-06 22:42:22,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:22,517 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:42:23,033 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:42:23,033 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311563012]
[2023-11-06 22:42:23,034 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:23,034 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:42:23,034 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:42:23,035 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:42:23,037 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-06 22:42:29,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:42:29,494 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21304 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:42:29,551 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:42:29,673 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:42:29,673 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:42:29,673 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:42:29,674 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891125688]
[2023-11-06 22:42:29,674 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:42:29,674 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311563012]
[2023-11-06 22:42:29,674 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [311563012] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:42:29,674 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:42:29,676 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:42:29,676 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494879679]
[2023-11-06 22:42:29,676 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:42:29,681 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:42:29,682 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:42:29,687 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:42:29,687 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:29,689 INFO  L87              Difference]: Start difference. First operand 7416 states and 12370 transitions. Second operand  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:29,868 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:42:29,868 INFO  L93              Difference]: Finished difference Result 13802 states and 23025 transitions.
[2023-11-06 22:42:29,871 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:42:29,873 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 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 4824
[2023-11-06 22:42:29,875 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:42:29,889 INFO  L225             Difference]: With dead ends: 13802
[2023-11-06 22:42:29,890 INFO  L226             Difference]: Without dead ends: 7425
[2023-11-06 22:42:29,896 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4821 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:29,897 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 12 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32985 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:42:29,897 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32985 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:42:29,909 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7425 states.
[2023-11-06 22:42:30,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 7417.
[2023-11-06 22:42:30,123 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7417 states, 7416 states have (on average 1.6681499460625675) internal successors, (12371), 7416 states have internal predecessors, (12371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:30,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7417 states to 7417 states and 12371 transitions.
[2023-11-06 22:42:30,138 INFO  L78                 Accepts]: Start accepts. Automaton has 7417 states and 12371 transitions. Word has length 4824
[2023-11-06 22:42:30,141 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:42:30,141 INFO  L495      AbstractCegarLoop]: Abstraction has 7417 states and 12371 transitions.
[2023-11-06 22:42:30,143 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:30,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 7417 states and 12371 transitions.
[2023-11-06 22:42:30,296 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:42:30,297 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:42:30,300 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:42:30,363 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-06 22:42:30,515 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:42:30,515 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:42:30,516 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:42:30,518 INFO  L85        PathProgramCache]: Analyzing trace with hash -1504380362, now seen corresponding path program 1 times
[2023-11-06 22:42:30,518 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:42:30,518 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838533542]
[2023-11-06 22:42:30,519 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:30,519 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:42:31,023 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:42:31,023 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093587920]
[2023-11-06 22:42:31,025 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:31,025 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:42:31,026 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:42:31,027 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:42:31,051 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-06 22:42:37,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:42:37,356 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21305 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:42:37,414 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:42:37,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:42:37,736 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:42:37,736 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:42:37,736 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838533542]
[2023-11-06 22:42:37,736 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:42:37,736 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093587920]
[2023-11-06 22:42:37,736 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093587920] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:42:37,737 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:42:37,738 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:42:37,739 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201783137]
[2023-11-06 22:42:37,739 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:42:37,744 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:42:37,744 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:42:37,752 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:42:37,752 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:37,754 INFO  L87              Difference]: Start difference. First operand 7417 states and 12371 transitions. Second operand  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:37,970 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:42:37,970 INFO  L93              Difference]: Finished difference Result 13804 states and 23027 transitions.
[2023-11-06 22:42:37,971 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:42:37,972 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 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 4824
[2023-11-06 22:42:37,976 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:42:37,988 INFO  L225             Difference]: With dead ends: 13804
[2023-11-06 22:42:37,988 INFO  L226             Difference]: Without dead ends: 7426
[2023-11-06 22:42:37,996 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4821 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:37,997 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 12 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32985 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:42:37,997 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32985 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:42:38,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7426 states.
[2023-11-06 22:42:38,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 7418.
[2023-11-06 22:42:38,127 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7418 states, 7417 states have (on average 1.668059862478091) internal successors, (12372), 7417 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)
[2023-11-06 22:42:38,145 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7418 states to 7418 states and 12372 transitions.
[2023-11-06 22:42:38,145 INFO  L78                 Accepts]: Start accepts. Automaton has 7418 states and 12372 transitions. Word has length 4824
[2023-11-06 22:42:38,149 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:42:38,150 INFO  L495      AbstractCegarLoop]: Abstraction has 7418 states and 12372 transitions.
[2023-11-06 22:42:38,151 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:38,152 INFO  L276                IsEmpty]: Start isEmpty. Operand 7418 states and 12372 transitions.
[2023-11-06 22:42:38,451 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:42:38,452 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:42:38,455 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:42:38,533 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-11-06 22:42:38,679 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:42:38,679 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:42:38,680 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:42:38,682 INFO  L85        PathProgramCache]: Analyzing trace with hash -554742140, now seen corresponding path program 1 times
[2023-11-06 22:42:38,682 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:42:38,682 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314446943]
[2023-11-06 22:42:38,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:38,684 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:42:39,127 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:42:39,127 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894851458]
[2023-11-06 22:42:39,128 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:39,129 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:42:39,129 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:42:39,130 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:42:39,147 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-06 22:42:45,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:42:45,720 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21306 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:42:45,805 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:42:45,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:42:45,952 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:42:45,952 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:42:45,952 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314446943]
[2023-11-06 22:42:45,953 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:42:45,953 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894851458]
[2023-11-06 22:42:45,953 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [894851458] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:42:45,953 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:42:45,955 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:42:45,955 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804112075]
[2023-11-06 22:42:45,955 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:42:45,961 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:42:45,961 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:42:45,966 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:42:45,967 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:45,968 INFO  L87              Difference]: Start difference. First operand 7418 states and 12372 transitions. Second operand  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:46,165 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:42:46,166 INFO  L93              Difference]: Finished difference Result 13806 states and 23029 transitions.
[2023-11-06 22:42:46,166 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:42:46,167 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 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 4824
[2023-11-06 22:42:46,171 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:42:46,181 INFO  L225             Difference]: With dead ends: 13806
[2023-11-06 22:42:46,181 INFO  L226             Difference]: Without dead ends: 7427
[2023-11-06 22:42:46,188 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4821 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:42:46,189 INFO  L413           NwaCegarLoop]: 10999 mSDtfsCounter, 12 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32985 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:42:46,189 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32985 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:42:46,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7427 states.
[2023-11-06 22:42:46,293 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7427 to 7419.
[2023-11-06 22:42:46,302 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7419 states, 7418 states have (on average 1.6679698031814505) internal successors, (12373), 7418 states have internal predecessors, (12373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:46,315 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7419 states to 7419 states and 12373 transitions.
[2023-11-06 22:42:46,315 INFO  L78                 Accepts]: Start accepts. Automaton has 7419 states and 12373 transitions. Word has length 4824
[2023-11-06 22:42:46,318 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:42:46,319 INFO  L495      AbstractCegarLoop]: Abstraction has 7419 states and 12373 transitions.
[2023-11-06 22:42:46,320 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:42:46,320 INFO  L276                IsEmpty]: Start isEmpty. Operand 7419 states and 12373 transitions.
[2023-11-06 22:42:46,575 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4825
[2023-11-06 22:42:46,576 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:42:46,579 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:42:46,653 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-11-06 22:42:46,803 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-06 22:42:46,803 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:42:46,804 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:42:46,805 INFO  L85        PathProgramCache]: Analyzing trace with hash 1610722770, now seen corresponding path program 1 times
[2023-11-06 22:42:46,805 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:42:46,806 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248751979]
[2023-11-06 22:42:46,807 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:46,807 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:42:47,344 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:42:47,344 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539871010]
[2023-11-06 22:42:47,345 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:47,346 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:42:47,346 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:42:47,347 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:42:47,363 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-06 22:42:53,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:42:53,764 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21307 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 22:42:53,851 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:42:54,908 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 6 proven. 529 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-11-06 22:42:54,908 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:42:55,249 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked.
[2023-11-06 22:42:55,249 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:42:55,249 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248751979]
[2023-11-06 22:42:55,249 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:42:55,250 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539871010]
[2023-11-06 22:42:55,250 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [539871010] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 22:42:55,250 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 22:42:55,253 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 22:42:55,253 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059300876]
[2023-11-06 22:42:55,254 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:42:55,259 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:42:55,259 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:42:55,264 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:42:55,265 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 22:42:55,266 INFO  L87              Difference]: Start difference. First operand 7419 states and 12373 transitions. Second operand  has 5 states, 5 states have (on average 856.6) internal successors, (4283), 5 states have internal predecessors, (4283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:04,808 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:43:04,808 INFO  L93              Difference]: Finished difference Result 26010 states and 43212 transitions.
[2023-11-06 22:43:04,809 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:43:04,809 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 856.6) internal successors, (4283), 5 states have internal predecessors, (4283), 0 states have call successors, (0), 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 4824
[2023-11-06 22:43:04,814 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:43:04,826 INFO  L225             Difference]: With dead ends: 26010
[2023-11-06 22:43:04,827 INFO  L226             Difference]: Without dead ends: 13795
[2023-11-06 22:43:04,837 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9647 GetRequests, 9638 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 22:43:04,837 INFO  L413           NwaCegarLoop]: 18653 mSDtfsCounter, 28622 mSDsluCounter, 17815 mSDsCounter, 0 mSdLazyCounter, 8249 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28622 SdHoareTripleChecker+Valid, 36468 SdHoareTripleChecker+Invalid, 8789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 8249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time
[2023-11-06 22:43:04,838 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28622 Valid, 36468 Invalid, 8789 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [540 Valid, 8249 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time]
[2023-11-06 22:43:04,853 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13795 states.
[2023-11-06 22:43:04,958 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13795 to 7419.
[2023-11-06 22:43:04,965 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7419 states, 7418 states have (on average 1.6679698031814505) internal successors, (12373), 7418 states have internal predecessors, (12373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:04,978 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7419 states to 7419 states and 12373 transitions.
[2023-11-06 22:43:04,979 INFO  L78                 Accepts]: Start accepts. Automaton has 7419 states and 12373 transitions. Word has length 4824
[2023-11-06 22:43:04,983 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:43:04,983 INFO  L495      AbstractCegarLoop]: Abstraction has 7419 states and 12373 transitions.
[2023-11-06 22:43:04,984 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 856.6) internal successors, (4283), 5 states have internal predecessors, (4283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:04,985 INFO  L276                IsEmpty]: Start isEmpty. Operand 7419 states and 12373 transitions.
[2023-11-06 22:43:05,193 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4826
[2023-11-06 22:43:05,193 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:43:05,196 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:43:05,268 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-11-06 22:43:05,411 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:43:05,411 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:43:05,412 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:43:05,415 INFO  L85        PathProgramCache]: Analyzing trace with hash -1717904054, now seen corresponding path program 1 times
[2023-11-06 22:43:05,415 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:43:05,415 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132267464]
[2023-11-06 22:43:05,416 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:43:05,416 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:43:05,899 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:43:05,899 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242259483]
[2023-11-06 22:43:05,900 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:43:05,901 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:43:05,901 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:43:05,903 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:43:05,927 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-06 22:43:12,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:43:12,198 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21310 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 22:43:12,262 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:43:13,333 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 8 proven. 529 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2023-11-06 22:43:13,334 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:43:13,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked.
[2023-11-06 22:43:13,478 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:43:13,478 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132267464]
[2023-11-06 22:43:13,479 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:43:13,479 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242259483]
[2023-11-06 22:43:13,479 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [242259483] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 22:43:13,479 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 22:43:13,482 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 22:43:13,482 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091912235]
[2023-11-06 22:43:13,482 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:43:13,487 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:43:13,487 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:43:13,492 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:43:13,493 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 22:43:13,494 INFO  L87              Difference]: Start difference. First operand 7419 states and 12373 transitions. Second operand  has 5 states, 5 states have (on average 857.2) internal successors, (4286), 5 states have internal predecessors, (4286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:23,708 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:43:23,709 INFO  L93              Difference]: Finished difference Result 26014 states and 43216 transitions.
[2023-11-06 22:43:23,709 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:43:23,710 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 857.2) internal successors, (4286), 5 states have internal predecessors, (4286), 0 states have call successors, (0), 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 4825
[2023-11-06 22:43:23,715 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:43:23,730 INFO  L225             Difference]: With dead ends: 26014
[2023-11-06 22:43:23,730 INFO  L226             Difference]: Without dead ends: 13794
[2023-11-06 22:43:23,738 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9649 GetRequests, 9640 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 22:43:23,738 INFO  L413           NwaCegarLoop]: 18645 mSDtfsCounter, 19615 mSDsluCounter, 27025 mSDsCounter, 0 mSdLazyCounter, 11385 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19615 SdHoareTripleChecker+Valid, 45670 SdHoareTripleChecker+Invalid, 11925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 11385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time
[2023-11-06 22:43:23,739 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19615 Valid, 45670 Invalid, 11925 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [540 Valid, 11385 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time]
[2023-11-06 22:43:23,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13794 states.
[2023-11-06 22:43:23,871 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13794 to 7421.
[2023-11-06 22:43:23,878 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7421 states, 7420 states have (on average 1.667789757412399) internal successors, (12375), 7420 states have internal predecessors, (12375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:23,891 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 12375 transitions.
[2023-11-06 22:43:23,892 INFO  L78                 Accepts]: Start accepts. Automaton has 7421 states and 12375 transitions. Word has length 4825
[2023-11-06 22:43:23,897 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:43:23,898 INFO  L495      AbstractCegarLoop]: Abstraction has 7421 states and 12375 transitions.
[2023-11-06 22:43:23,899 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 857.2) internal successors, (4286), 5 states have internal predecessors, (4286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:23,899 INFO  L276                IsEmpty]: Start isEmpty. Operand 7421 states and 12375 transitions.
[2023-11-06 22:43:24,102 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4827
[2023-11-06 22:43:24,102 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:43:24,106 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:43:24,169 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-06 22:43:24,327 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:43:24,327 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:43:24,328 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:43:24,329 INFO  L85        PathProgramCache]: Analyzing trace with hash -1914217108, now seen corresponding path program 1 times
[2023-11-06 22:43:24,329 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:43:24,329 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267955371]
[2023-11-06 22:43:24,330 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:43:24,330 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:43:24,715 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:43:24,715 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637268499]
[2023-11-06 22:43:24,716 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:43:24,717 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:43:24,717 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:43:24,718 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:43:24,747 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-06 22:43:30,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:43:30,955 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21313 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 22:43:31,019 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:43:32,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 10 proven. 529 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-11-06 22:43:32,062 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:43:32,205 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked.
[2023-11-06 22:43:32,205 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:43:32,206 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267955371]
[2023-11-06 22:43:32,206 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:43:32,206 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637268499]
[2023-11-06 22:43:32,206 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [637268499] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 22:43:32,206 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 22:43:32,209 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 22:43:32,209 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930237262]
[2023-11-06 22:43:32,210 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:43:32,214 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:43:32,215 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:43:32,219 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:43:32,220 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 22:43:32,221 INFO  L87              Difference]: Start difference. First operand 7421 states and 12375 transitions. Second operand  has 5 states, 5 states have (on average 857.8) internal successors, (4289), 5 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:41,024 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:43:41,024 INFO  L93              Difference]: Finished difference Result 26022 states and 43224 transitions.
[2023-11-06 22:43:41,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:43:41,026 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 857.8) internal successors, (4289), 5 states have internal predecessors, (4289), 0 states have call successors, (0), 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 4826
[2023-11-06 22:43:41,031 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:43:41,042 INFO  L225             Difference]: With dead ends: 26022
[2023-11-06 22:43:41,042 INFO  L226             Difference]: Without dead ends: 13795
[2023-11-06 22:43:41,048 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9651 GetRequests, 9642 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 22:43:41,049 INFO  L413           NwaCegarLoop]: 18637 mSDtfsCounter, 28603 mSDsluCounter, 17806 mSDsCounter, 0 mSdLazyCounter, 8249 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28603 SdHoareTripleChecker+Valid, 36443 SdHoareTripleChecker+Invalid, 8789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 8249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2023-11-06 22:43:41,049 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28603 Valid, 36443 Invalid, 8789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [540 Valid, 8249 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2023-11-06 22:43:41,063 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13795 states.
[2023-11-06 22:43:41,155 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13795 to 7423.
[2023-11-06 22:43:41,162 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7423 states, 7422 states have (on average 1.6676098086769064) internal successors, (12377), 7422 states have internal predecessors, (12377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:41,174 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7423 states to 7423 states and 12377 transitions.
[2023-11-06 22:43:41,175 INFO  L78                 Accepts]: Start accepts. Automaton has 7423 states and 12377 transitions. Word has length 4826
[2023-11-06 22:43:41,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:43:41,180 INFO  L495      AbstractCegarLoop]: Abstraction has 7423 states and 12377 transitions.
[2023-11-06 22:43:41,181 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 857.8) internal successors, (4289), 5 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:41,181 INFO  L276                IsEmpty]: Start isEmpty. Operand 7423 states and 12377 transitions.
[2023-11-06 22:43:41,310 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4828
[2023-11-06 22:43:41,310 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:43:41,312 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:43:41,375 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-11-06 22:43:41,539 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-06 22:43:41,539 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:43:41,540 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:43:41,541 INFO  L85        PathProgramCache]: Analyzing trace with hash 328802992, now seen corresponding path program 1 times
[2023-11-06 22:43:41,541 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:43:41,541 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044488875]
[2023-11-06 22:43:41,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:43:41,542 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:43:42,076 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:43:42,076 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032963361]
[2023-11-06 22:43:42,077 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:43:42,078 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:43:42,078 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:43:42,079 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:43:42,109 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-06 22:43:48,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:43:48,150 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21316 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 22:43:48,209 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:43:49,196 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 12 proven. 529 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-11-06 22:43:49,196 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:43:49,321 INFO  L134       CoverageAnalysis]: Checked inductivity of 548 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked.
[2023-11-06 22:43:49,322 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:43:49,322 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044488875]
[2023-11-06 22:43:49,322 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:43:49,322 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032963361]
[2023-11-06 22:43:49,322 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032963361] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 22:43:49,322 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 22:43:49,325 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-06 22:43:49,325 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951339901]
[2023-11-06 22:43:49,325 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:43:49,328 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:43:49,329 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:43:49,332 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:43:49,333 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-06 22:43:49,334 INFO  L87              Difference]: Start difference. First operand 7423 states and 12377 transitions. Second operand  has 5 states, 5 states have (on average 858.4) internal successors, (4292), 5 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:59,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:43:59,469 INFO  L93              Difference]: Finished difference Result 26030 states and 43232 transitions.
[2023-11-06 22:43:59,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:43:59,470 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 858.4) internal successors, (4292), 5 states have internal predecessors, (4292), 0 states have call successors, (0), 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 4827
[2023-11-06 22:43:59,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:43:59,490 INFO  L225             Difference]: With dead ends: 26030
[2023-11-06 22:43:59,490 INFO  L226             Difference]: Without dead ends: 13796
[2023-11-06 22:43:59,496 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9653 GetRequests, 9644 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-06 22:43:59,496 INFO  L413           NwaCegarLoop]: 18629 mSDtfsCounter, 19603 mSDsluCounter, 27005 mSDsCounter, 0 mSdLazyCounter, 11385 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19603 SdHoareTripleChecker+Valid, 45634 SdHoareTripleChecker+Invalid, 11925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 11385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2023-11-06 22:43:59,496 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19603 Valid, 45634 Invalid, 11925 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [540 Valid, 11385 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time]
[2023-11-06 22:43:59,508 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13796 states.
[2023-11-06 22:43:59,602 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13796 to 7425.
[2023-11-06 22:43:59,609 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7425 states, 7424 states have (on average 1.6674299568965518) internal successors, (12379), 7424 states have internal predecessors, (12379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:59,622 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7425 states to 7425 states and 12379 transitions.
[2023-11-06 22:43:59,623 INFO  L78                 Accepts]: Start accepts. Automaton has 7425 states and 12379 transitions. Word has length 4827
[2023-11-06 22:43:59,627 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:43:59,627 INFO  L495      AbstractCegarLoop]: Abstraction has 7425 states and 12379 transitions.
[2023-11-06 22:43:59,628 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 858.4) internal successors, (4292), 5 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 22:43:59,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 7425 states and 12379 transitions.
[2023-11-06 22:43:59,780 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4829
[2023-11-06 22:43:59,780 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:43:59,782 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-06 22:43:59,859 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-11-06 22:44:00,003 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-06 22:44:00,003 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:44:00,004 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:44:00,005 INFO  L85        PathProgramCache]: Analyzing trace with hash 233057928, now seen corresponding path program 1 times
[2023-11-06 22:44:00,005 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:44:00,005 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091484035]
[2023-11-06 22:44:00,006 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:44:00,006 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:44:00,434 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:44:00,434 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203384862]
[2023-11-06 22:44:00,435 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:44:00,436 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:44:00,436 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:44:00,439 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:44:00,469 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdde855d-cbc2-4bfb-bd77-afa92a595b5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process