./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash df3f8d98fc56200249500c20837fbd03a7acc9d2584bf0ff8aa29f2b9e250a63
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 06:09:18,865 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 06:09:18,929 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 06:09:18,933 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 06:09:18,934 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 06:09:18,957 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 06:09:18,958 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 06:09:18,959 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 06:09:18,959 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 06:09:18,960 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 06:09:18,960 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 06:09:18,961 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 06:09:18,961 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 06:09:18,962 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 06:09:18,962 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 06:09:18,963 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 06:09:18,964 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 06:09:18,964 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 06:09:18,964 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 06:09:18,965 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 06:09:18,965 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 06:09:18,966 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 06:09:18,966 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 06:09:18,967 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 06:09:18,967 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 06:09:18,968 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 06:09:18,968 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 06:09:18,969 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 06:09:18,969 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 06:09:18,970 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 06:09:18,970 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 06:09:18,970 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 06:09:18,971 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 06:09:18,971 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 06:09:18,972 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 06:09:18,972 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 06:09:18,972 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 06:09:18,972 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 06:09:18,973 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 06:09:18,973 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_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df3f8d98fc56200249500c20837fbd03a7acc9d2584bf0ff8aa29f2b9e250a63
[2023-11-29 06:09:19,181 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 06:09:19,203 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 06:09:19,206 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 06:09:19,207 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 06:09:19,207 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 06:09:19,209 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-back-serstep.c
[2023-11-29 06:09:21,980 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 06:09:22,379 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 06:09:22,379 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-back-serstep.c
[2023-11-29 06:09:22,409 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/data/adb8629e1/5bff5280c4c948bb8b285a5773832ce5/FLAG53d3ffb1d
[2023-11-29 06:09:22,423 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/data/adb8629e1/5bff5280c4c948bb8b285a5773832ce5
[2023-11-29 06:09:22,426 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 06:09:22,427 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 06:09:22,429 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 06:09:22,429 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 06:09:22,433 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 06:09:22,434 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:09:22" (1/1) ...
[2023-11-29 06:09:22,435 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c43d9ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:22, skipping insertion in model container
[2023-11-29 06:09:22,435 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:09:22" (1/1) ...
[2023-11-29 06:09:22,552 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 06:09:22,787 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_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-back-serstep.c[1177,1190]
[2023-11-29 06:09:23,573 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 06:09:23,581 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 06:09:23,590 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_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-back-serstep.c[1177,1190]
[2023-11-29 06:09:24,155 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 06:09:24,166 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 06:09:24,166 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24 WrapperNode
[2023-11-29 06:09:24,166 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 06:09:24,167 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 06:09:24,167 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 06:09:24,167 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 06:09:24,173 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:24,397 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:26,339 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31026
[2023-11-29 06:09:26,340 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 06:09:26,341 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 06:09:26,341 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 06:09:26,341 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 06:09:26,350 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:26,350 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:26,730 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:27,086 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 06:09:27,086 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:27,086 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:27,698 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:27,829 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:27,972 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:28,068 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:28,467 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 06:09:28,468 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 06:09:28,468 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 06:09:28,468 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 06:09:28,468 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (1/1) ...
[2023-11-29 06:09:28,475 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 06:09:28,486 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:09:28,497 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 06:09:28,499 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 06:09:28,526 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 06:09:28,527 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 06:09:28,527 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 06:09:28,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 06:09:29,861 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 06:09:29,864 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 06:09:44,928 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 06:09:45,295 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 06:09:45,295 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 06:09:45,299 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:09:45 BoogieIcfgContainer
[2023-11-29 06:09:45,299 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 06:09:45,302 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 06:09:45,302 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 06:09:45,305 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 06:09:45,306 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:09:22" (1/3) ...
[2023-11-29 06:09:45,306 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20091543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:09:45, skipping insertion in model container
[2023-11-29 06:09:45,306 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:24" (2/3) ...
[2023-11-29 06:09:45,307 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20091543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:09:45, skipping insertion in model container
[2023-11-29 06:09:45,307 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:09:45" (3/3) ...
[2023-11-29 06:09:45,308 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.6.prop1-back-serstep.c
[2023-11-29 06:09:45,326 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 06:09:45,326 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 06:09:45,476 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 06:09:45,483 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18271c1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 06:09:45,483 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 06:09:45,508 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 7103 states, 7101 states have (on average 1.6700464723278412) internal successors, (11859), 7102 states have internal predecessors, (11859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:09:45,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 739
[2023-11-29 06:09:45,559 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:09:45,560 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:09:45,561 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:09:45,565 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:09:45,566 INFO  L85        PathProgramCache]: Analyzing trace with hash -780027306, now seen corresponding path program 1 times
[2023-11-29 06:09:45,575 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:09:45,576 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231898283]
[2023-11-29 06:09:45,576 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:09:45,576 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:09:46,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:09:48,582 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:09:48,583 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:09:48,583 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231898283]
[2023-11-29 06:09:48,584 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231898283] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:09:48,584 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:09:48,585 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:09:48,586 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493693729]
[2023-11-29 06:09:48,586 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:09:48,592 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:09:48,592 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:09:48,616 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:09:48,617 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:09:48,630 INFO  L87              Difference]: Start difference. First operand  has 7103 states, 7101 states have (on average 1.6700464723278412) internal successors, (11859), 7102 states have internal predecessors, (11859), 0 states have call successors, (0), 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 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:09:48,939 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:09:48,940 INFO  L93              Difference]: Finished difference Result 13971 states and 23329 transitions.
[2023-11-29 06:09:48,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:09:48,942 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 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 738
[2023-11-29 06:09:48,946 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:09:48,988 INFO  L225             Difference]: With dead ends: 13971
[2023-11-29 06:09:48,988 INFO  L226             Difference]: Without dead ends: 7103
[2023-11-29 06:09:49,001 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:09:49,004 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 1 mSDsluCounter, 23699 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35551 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:09:49,005 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35551 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:09:49,028 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7103 states.
[2023-11-29 06:09:49,145 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7103 to 7103.
[2023-11-29 06:09:49,158 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7103 states, 7102 states have (on average 1.6695297099408617) internal successors, (11857), 7102 states have internal predecessors, (11857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:09:49,178 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 11857 transitions.
[2023-11-29 06:09:49,179 INFO  L78                 Accepts]: Start accepts. Automaton has 7103 states and 11857 transitions. Word has length 738
[2023-11-29 06:09:49,180 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:09:49,181 INFO  L495      AbstractCegarLoop]: Abstraction has 7103 states and 11857 transitions.
[2023-11-29 06:09:49,181 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:09:49,181 INFO  L276                IsEmpty]: Start isEmpty. Operand 7103 states and 11857 transitions.
[2023-11-29 06:09:49,193 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 740
[2023-11-29 06:09:49,193 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:09:49,193 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:09:49,194 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 06:09:49,194 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:09:49,194 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:09:49,195 INFO  L85        PathProgramCache]: Analyzing trace with hash 1590686642, now seen corresponding path program 1 times
[2023-11-29 06:09:49,195 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:09:49,195 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438394303]
[2023-11-29 06:09:49,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:09:49,196 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:09:49,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:09:50,643 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:09:50,644 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:09:50,644 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438394303]
[2023-11-29 06:09:50,644 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438394303] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:09:50,644 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:09:50,645 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:09:50,645 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804663742]
[2023-11-29 06:09:50,645 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:09:50,648 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:09:50,648 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:09:50,649 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:09:50,650 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:09:50,650 INFO  L87              Difference]: Start difference. First operand 7103 states and 11857 transitions. Second operand  has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:09:50,968 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:09:50,968 INFO  L93              Difference]: Finished difference Result 13974 states and 23327 transitions.
[2023-11-29 06:09:50,969 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:09:50,970 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 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 739
[2023-11-29 06:09:50,971 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:09:51,008 INFO  L225             Difference]: With dead ends: 13974
[2023-11-29 06:09:51,008 INFO  L226             Difference]: Without dead ends: 7106
[2023-11-29 06:09:51,017 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:09:51,018 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 1 mSDsluCounter, 23697 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35549 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:09:51,019 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35549 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:09:51,033 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7106 states.
[2023-11-29 06:09:51,144 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 7105.
[2023-11-29 06:09:51,158 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7105 states, 7104 states have (on average 1.6693412162162162) internal successors, (11859), 7104 states have internal predecessors, (11859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:09:51,187 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 11859 transitions.
[2023-11-29 06:09:51,187 INFO  L78                 Accepts]: Start accepts. Automaton has 7105 states and 11859 transitions. Word has length 739
[2023-11-29 06:09:51,188 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:09:51,188 INFO  L495      AbstractCegarLoop]: Abstraction has 7105 states and 11859 transitions.
[2023-11-29 06:09:51,189 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:09:51,190 INFO  L276                IsEmpty]: Start isEmpty. Operand 7105 states and 11859 transitions.
[2023-11-29 06:09:51,196 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 741
[2023-11-29 06:09:51,197 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:09:51,197 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:09:51,197 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 06:09:51,198 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:09:51,198 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:09:51,199 INFO  L85        PathProgramCache]: Analyzing trace with hash -663742350, now seen corresponding path program 1 times
[2023-11-29 06:09:51,199 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:09:51,199 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903183157]
[2023-11-29 06:09:51,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:09:51,200 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:09:51,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:09:53,006 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:09:53,006 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:09:53,006 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903183157]
[2023-11-29 06:09:53,006 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903183157] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:09:53,007 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:09:53,007 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:09:53,007 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285677135]
[2023-11-29 06:09:53,007 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:09:53,008 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:09:53,009 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:09:53,010 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:09:53,010 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 06:09:53,011 INFO  L87              Difference]: Start difference. First operand 7105 states and 11859 transitions. Second operand  has 5 states, 5 states have (on average 148.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:09:53,725 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:09:53,725 INFO  L93              Difference]: Finished difference Result 21699 states and 36220 transitions.
[2023-11-29 06:09:53,725 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:09:53,726 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 148.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 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 740
[2023-11-29 06:09:53,728 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:09:53,799 INFO  L225             Difference]: With dead ends: 21699
[2023-11-29 06:09:53,799 INFO  L226             Difference]: Without dead ends: 14829
[2023-11-29 06:09:53,812 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:09:53,814 INFO  L413           NwaCegarLoop]: 13286 mSDtfsCounter, 46927 mSDsluCounter, 23698 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46927 SdHoareTripleChecker+Valid, 36984 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:09:53,814 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46927 Valid, 36984 Invalid, 16 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:09:53,840 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14829 states.
[2023-11-29 06:09:54,068 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14829 to 7968.
[2023-11-29 06:09:54,083 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7968 states, 7967 states have (on average 1.6688841471068157) internal successors, (13296), 7967 states have internal predecessors, (13296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:09:54,105 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7968 states to 7968 states and 13296 transitions.
[2023-11-29 06:09:54,105 INFO  L78                 Accepts]: Start accepts. Automaton has 7968 states and 13296 transitions. Word has length 740
[2023-11-29 06:09:54,107 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:09:54,107 INFO  L495      AbstractCegarLoop]: Abstraction has 7968 states and 13296 transitions.
[2023-11-29 06:09:54,108 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 148.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:09:54,108 INFO  L276                IsEmpty]: Start isEmpty. Operand 7968 states and 13296 transitions.
[2023-11-29 06:09:54,407 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5198
[2023-11-29 06:09:54,407 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:09:54,412 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:09:54,412 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 06:09:54,412 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:09:54,413 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:09:54,415 INFO  L85        PathProgramCache]: Analyzing trace with hash -1550008497, now seen corresponding path program 1 times
[2023-11-29 06:09:54,415 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:09:54,416 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071930539]
[2023-11-29 06:09:54,417 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:09:54,417 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:09:55,192 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:09:55,192 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675608324]
[2023-11-29 06:09:55,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:09:55,194 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:09:55,195 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:09:55,198 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:09:55,205 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 06:10:01,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:10:01,331 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23113 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:10:01,469 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:10:01,703 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:10:01,703 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:10:01,703 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:10:01,704 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071930539]
[2023-11-29 06:10:01,704 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:10:01,704 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675608324]
[2023-11-29 06:10:01,704 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [675608324] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:10:01,704 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:10:01,706 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:10:01,706 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920378154]
[2023-11-29 06:10:01,706 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:10:01,714 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:10:01,715 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:10:01,720 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:10:01,720 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:01,722 INFO  L87              Difference]: Start difference. First operand 7968 states and 13296 transitions. Second operand  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:01,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:10:01,991 INFO  L93              Difference]: Finished difference Result 14848 states and 24780 transitions.
[2023-11-29 06:10:01,991 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:10:01,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 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 5197
[2023-11-29 06:10:01,995 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:10:02,005 INFO  L225             Difference]: With dead ends: 14848
[2023-11-29 06:10:02,005 INFO  L226             Difference]: Without dead ends: 7978
[2023-11-29 06:10:02,013 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5196 GetRequests, 5194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:02,014 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 12 mSDsluCounter, 23694 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35546 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:10:02,014 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35546 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:10:02,030 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7978 states.
[2023-11-29 06:10:02,163 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 7970.
[2023-11-29 06:10:02,180 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7970 states, 7969 states have (on average 1.6687162755678253) internal successors, (13298), 7969 states have internal predecessors, (13298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:02,200 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7970 states to 7970 states and 13298 transitions.
[2023-11-29 06:10:02,200 INFO  L78                 Accepts]: Start accepts. Automaton has 7970 states and 13298 transitions. Word has length 5197
[2023-11-29 06:10:02,203 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:10:02,203 INFO  L495      AbstractCegarLoop]: Abstraction has 7970 states and 13298 transitions.
[2023-11-29 06:10:02,207 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:02,207 INFO  L276                IsEmpty]: Start isEmpty. Operand 7970 states and 13298 transitions.
[2023-11-29 06:10:02,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5198
[2023-11-29 06:10:02,503 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:10:02,505 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:10:02,563 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 06:10:02,706 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:02,706 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:10:02,707 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:10:02,710 INFO  L85        PathProgramCache]: Analyzing trace with hash -1272420323, now seen corresponding path program 1 times
[2023-11-29 06:10:02,710 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:10:02,710 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650940891]
[2023-11-29 06:10:02,711 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:02,712 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:10:03,339 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:10:03,339 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837540895]
[2023-11-29 06:10:03,340 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:03,340 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:03,341 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:10:03,341 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:10:03,343 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 06:10:08,770 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:10:08,905 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23114 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:10:08,978 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:10:09,141 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:10:09,142 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:10:09,142 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:10:09,142 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650940891]
[2023-11-29 06:10:09,142 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:10:09,143 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837540895]
[2023-11-29 06:10:09,143 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837540895] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:10:09,143 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:10:09,144 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:10:09,145 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401211692]
[2023-11-29 06:10:09,145 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:10:09,151 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:10:09,151 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:10:09,157 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:10:09,157 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:09,159 INFO  L87              Difference]: Start difference. First operand 7970 states and 13298 transitions. Second operand  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:09,438 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:10:09,438 INFO  L93              Difference]: Finished difference Result 14851 states and 24782 transitions.
[2023-11-29 06:10:09,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:10:09,440 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 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 5197
[2023-11-29 06:10:09,442 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:10:09,450 INFO  L225             Difference]: With dead ends: 14851
[2023-11-29 06:10:09,450 INFO  L226             Difference]: Without dead ends: 7979
[2023-11-29 06:10:09,455 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5196 GetRequests, 5194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:09,456 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 12 mSDsluCounter, 23694 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35546 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:10:09,457 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35546 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:10:09,464 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7979 states.
[2023-11-29 06:10:09,532 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 7971.
[2023-11-29 06:10:09,542 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7971 states, 7970 states have (on average 1.6686323713927227) internal successors, (13299), 7970 states have internal predecessors, (13299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:09,550 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7971 states to 7971 states and 13299 transitions.
[2023-11-29 06:10:09,551 INFO  L78                 Accepts]: Start accepts. Automaton has 7971 states and 13299 transitions. Word has length 5197
[2023-11-29 06:10:09,553 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:10:09,553 INFO  L495      AbstractCegarLoop]: Abstraction has 7971 states and 13299 transitions.
[2023-11-29 06:10:09,554 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:09,554 INFO  L276                IsEmpty]: Start isEmpty. Operand 7971 states and 13299 transitions.
[2023-11-29 06:10:09,669 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5198
[2023-11-29 06:10:09,669 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:10:09,672 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:10:09,730 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 06:10:09,873 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:09,873 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:10:09,873 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:10:09,875 INFO  L85        PathProgramCache]: Analyzing trace with hash 1842825707, now seen corresponding path program 1 times
[2023-11-29 06:10:09,876 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:10:09,876 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252103760]
[2023-11-29 06:10:09,877 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:09,877 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:10:10,388 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:10:10,388 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651773508]
[2023-11-29 06:10:10,389 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:10,389 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:10,390 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:10:10,390 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:10:10,398 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 06:10:15,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:10:15,596 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23115 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:10:15,661 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:10:15,774 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:10:15,774 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:10:15,774 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:10:15,774 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252103760]
[2023-11-29 06:10:15,774 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:10:15,775 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651773508]
[2023-11-29 06:10:15,775 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [651773508] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:10:15,775 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:10:15,776 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:10:15,777 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874016783]
[2023-11-29 06:10:15,777 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:10:15,783 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:10:15,783 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:10:15,787 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:10:15,787 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:15,789 INFO  L87              Difference]: Start difference. First operand 7971 states and 13299 transitions. Second operand  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:15,959 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:10:15,959 INFO  L93              Difference]: Finished difference Result 14853 states and 24784 transitions.
[2023-11-29 06:10:15,960 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:10:15,961 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 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 5197
[2023-11-29 06:10:15,963 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:10:15,972 INFO  L225             Difference]: With dead ends: 14853
[2023-11-29 06:10:15,972 INFO  L226             Difference]: Without dead ends: 7980
[2023-11-29 06:10:15,978 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5196 GetRequests, 5194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:15,979 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 12 mSDsluCounter, 23694 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35546 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:10:15,980 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35546 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:10:15,988 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7980 states.
[2023-11-29 06:10:16,055 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 7972.
[2023-11-29 06:10:16,063 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7972 states, 7971 states have (on average 1.6685484882699786) internal successors, (13300), 7971 states have internal predecessors, (13300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:16,072 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7972 states to 7972 states and 13300 transitions.
[2023-11-29 06:10:16,072 INFO  L78                 Accepts]: Start accepts. Automaton has 7972 states and 13300 transitions. Word has length 5197
[2023-11-29 06:10:16,074 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:10:16,074 INFO  L495      AbstractCegarLoop]: Abstraction has 7972 states and 13300 transitions.
[2023-11-29 06:10:16,076 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:16,076 INFO  L276                IsEmpty]: Start isEmpty. Operand 7972 states and 13300 transitions.
[2023-11-29 06:10:16,190 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5198
[2023-11-29 06:10:16,191 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:10:16,193 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:10:16,251 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 06:10:16,394 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:16,394 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:10:16,394 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:10:16,396 INFO  L85        PathProgramCache]: Analyzing trace with hash 168950457, now seen corresponding path program 1 times
[2023-11-29 06:10:16,396 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:10:16,396 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609202731]
[2023-11-29 06:10:16,397 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:16,397 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:10:16,792 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:10:16,792 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398706946]
[2023-11-29 06:10:16,793 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:16,793 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:16,793 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:10:16,794 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:10:16,795 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 06:10:21,935 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:10:22,074 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23116 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:10:22,133 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:10:22,276 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:10:22,276 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:10:22,277 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:10:22,277 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609202731]
[2023-11-29 06:10:22,277 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:10:22,277 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398706946]
[2023-11-29 06:10:22,277 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398706946] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:10:22,277 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:10:22,279 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:10:22,279 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476290985]
[2023-11-29 06:10:22,279 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:10:22,284 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:10:22,285 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:10:22,290 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:10:22,290 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:22,292 INFO  L87              Difference]: Start difference. First operand 7972 states and 13300 transitions. Second operand  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:22,482 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:10:22,482 INFO  L93              Difference]: Finished difference Result 14855 states and 24786 transitions.
[2023-11-29 06:10:22,483 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:10:22,484 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 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 5197
[2023-11-29 06:10:22,486 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:10:22,499 INFO  L225             Difference]: With dead ends: 14855
[2023-11-29 06:10:22,499 INFO  L226             Difference]: Without dead ends: 7981
[2023-11-29 06:10:22,507 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5196 GetRequests, 5194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:22,508 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 12 mSDsluCounter, 23694 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35546 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:10:22,508 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35546 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:10:22,519 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7981 states.
[2023-11-29 06:10:22,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7981 to 7973.
[2023-11-29 06:10:22,619 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7973 states, 7972 states have (on average 1.668464626191671) internal successors, (13301), 7972 states have internal predecessors, (13301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:22,631 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7973 states to 7973 states and 13301 transitions.
[2023-11-29 06:10:22,631 INFO  L78                 Accepts]: Start accepts. Automaton has 7973 states and 13301 transitions. Word has length 5197
[2023-11-29 06:10:22,633 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:10:22,634 INFO  L495      AbstractCegarLoop]: Abstraction has 7973 states and 13301 transitions.
[2023-11-29 06:10:22,635 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:22,636 INFO  L276                IsEmpty]: Start isEmpty. Operand 7973 states and 13301 transitions.
[2023-11-29 06:10:22,819 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5198
[2023-11-29 06:10:22,819 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:10:22,823 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:10:22,882 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 06:10:23,026 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:23,026 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:10:23,026 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:10:23,028 INFO  L85        PathProgramCache]: Analyzing trace with hash -932086137, now seen corresponding path program 1 times
[2023-11-29 06:10:23,028 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:10:23,028 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146738845]
[2023-11-29 06:10:23,028 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:23,028 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:10:23,426 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:10:23,426 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853833388]
[2023-11-29 06:10:23,427 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:23,427 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:23,427 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:10:23,428 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:10:23,429 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 06:10:28,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:10:28,630 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23117 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:10:28,714 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:10:28,842 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:10:28,842 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:10:28,843 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:10:28,843 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146738845]
[2023-11-29 06:10:28,843 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:10:28,843 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853833388]
[2023-11-29 06:10:28,843 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [853833388] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:10:28,844 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:10:28,845 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:10:28,845 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953860892]
[2023-11-29 06:10:28,845 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:10:28,851 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:10:28,851 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:10:28,857 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:10:28,857 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:28,858 INFO  L87              Difference]: Start difference. First operand 7973 states and 13301 transitions. Second operand  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:29,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:10:29,037 INFO  L93              Difference]: Finished difference Result 14857 states and 24788 transitions.
[2023-11-29 06:10:29,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:10:29,038 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 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 5197
[2023-11-29 06:10:29,041 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:10:29,047 INFO  L225             Difference]: With dead ends: 14857
[2023-11-29 06:10:29,047 INFO  L226             Difference]: Without dead ends: 7982
[2023-11-29 06:10:29,053 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5196 GetRequests, 5194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:29,054 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 12 mSDsluCounter, 23694 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35546 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:10:29,054 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35546 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:10:29,062 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7982 states.
[2023-11-29 06:10:29,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7982 to 7974.
[2023-11-29 06:10:29,143 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7974 states, 7973 states have (on average 1.6683807851498809) internal successors, (13302), 7973 states have internal predecessors, (13302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:29,151 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7974 states to 7974 states and 13302 transitions.
[2023-11-29 06:10:29,151 INFO  L78                 Accepts]: Start accepts. Automaton has 7974 states and 13302 transitions. Word has length 5197
[2023-11-29 06:10:29,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:10:29,154 INFO  L495      AbstractCegarLoop]: Abstraction has 7974 states and 13302 transitions.
[2023-11-29 06:10:29,155 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:29,155 INFO  L276                IsEmpty]: Start isEmpty. Operand 7974 states and 13302 transitions.
[2023-11-29 06:10:29,266 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5198
[2023-11-29 06:10:29,266 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:10:29,269 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:10:29,329 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 06:10:29,469 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:29,470 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:10:29,470 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:10:29,472 INFO  L85        PathProgramCache]: Analyzing trace with hash 137606485, now seen corresponding path program 1 times
[2023-11-29 06:10:29,472 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:10:29,472 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664270969]
[2023-11-29 06:10:29,473 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:29,473 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:10:29,856 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:10:29,856 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354188004]
[2023-11-29 06:10:29,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:29,857 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:29,857 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:10:29,858 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:10:29,860 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 06:10:34,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:10:35,027 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23118 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:10:35,085 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:10:35,175 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:10:35,175 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:10:35,175 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:10:35,175 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664270969]
[2023-11-29 06:10:35,175 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:10:35,175 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354188004]
[2023-11-29 06:10:35,175 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354188004] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:10:35,176 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:10:35,176 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:10:35,176 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055489406]
[2023-11-29 06:10:35,177 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:10:35,180 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:10:35,180 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:10:35,183 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:10:35,184 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:35,185 INFO  L87              Difference]: Start difference. First operand 7974 states and 13302 transitions. Second operand  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:35,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:10:35,343 INFO  L93              Difference]: Finished difference Result 14859 states and 24790 transitions.
[2023-11-29 06:10:35,344 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:10:35,345 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 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 5197
[2023-11-29 06:10:35,347 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:10:35,352 INFO  L225             Difference]: With dead ends: 14859
[2023-11-29 06:10:35,353 INFO  L226             Difference]: Without dead ends: 7983
[2023-11-29 06:10:35,358 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5196 GetRequests, 5194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:35,358 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 12 mSDsluCounter, 23694 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35546 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:10:35,359 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35546 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:10:35,366 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7983 states.
[2023-11-29 06:10:35,440 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7983 to 7975.
[2023-11-29 06:10:35,448 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7975 states, 7974 states have (on average 1.6682969651366943) internal successors, (13303), 7974 states have internal predecessors, (13303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:35,460 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7975 states to 7975 states and 13303 transitions.
[2023-11-29 06:10:35,460 INFO  L78                 Accepts]: Start accepts. Automaton has 7975 states and 13303 transitions. Word has length 5197
[2023-11-29 06:10:35,462 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:10:35,463 INFO  L495      AbstractCegarLoop]: Abstraction has 7975 states and 13303 transitions.
[2023-11-29 06:10:35,464 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:35,464 INFO  L276                IsEmpty]: Start isEmpty. Operand 7975 states and 13303 transitions.
[2023-11-29 06:10:35,649 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5198
[2023-11-29 06:10:35,649 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:10:35,652 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:10:35,707 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 06:10:35,853 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-29 06:10:35,853 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:10:35,853 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:10:35,856 INFO  L85        PathProgramCache]: Analyzing trace with hash 734909219, now seen corresponding path program 1 times
[2023-11-29 06:10:35,857 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:10:35,857 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049133770]
[2023-11-29 06:10:35,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:35,857 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:10:36,230 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:10:36,230 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243522472]
[2023-11-29 06:10:36,232 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:36,232 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:36,232 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:10:36,233 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:10:36,234 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 06:10:41,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:10:41,157 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23119 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:10:41,217 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:10:41,304 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:10:41,304 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:10:41,304 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:10:41,304 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049133770]
[2023-11-29 06:10:41,304 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:10:41,304 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243522472]
[2023-11-29 06:10:41,305 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [243522472] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:10:41,305 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:10:41,306 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:10:41,306 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315787493]
[2023-11-29 06:10:41,306 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:10:41,310 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:10:41,311 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:10:41,314 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:10:41,314 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:41,315 INFO  L87              Difference]: Start difference. First operand 7975 states and 13303 transitions. Second operand  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:41,524 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:10:41,524 INFO  L93              Difference]: Finished difference Result 14861 states and 24792 transitions.
[2023-11-29 06:10:41,525 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:10:41,526 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 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 5197
[2023-11-29 06:10:41,529 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:10:41,535 INFO  L225             Difference]: With dead ends: 14861
[2023-11-29 06:10:41,535 INFO  L226             Difference]: Without dead ends: 7984
[2023-11-29 06:10:41,540 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5196 GetRequests, 5194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:41,540 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 12 mSDsluCounter, 23694 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35546 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:10:41,541 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35546 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:10:41,550 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7984 states.
[2023-11-29 06:10:41,627 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7984 to 7976.
[2023-11-29 06:10:41,635 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7976 states, 7975 states have (on average 1.6682131661442006) internal successors, (13304), 7975 states have internal predecessors, (13304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:41,646 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 13304 transitions.
[2023-11-29 06:10:41,646 INFO  L78                 Accepts]: Start accepts. Automaton has 7976 states and 13304 transitions. Word has length 5197
[2023-11-29 06:10:41,649 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:10:41,649 INFO  L495      AbstractCegarLoop]: Abstraction has 7976 states and 13304 transitions.
[2023-11-29 06:10:41,650 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:41,651 INFO  L276                IsEmpty]: Start isEmpty. Operand 7976 states and 13304 transitions.
[2023-11-29 06:10:41,783 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5198
[2023-11-29 06:10:41,783 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:10:41,785 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:10:41,847 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 06:10:41,986 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 06:10:41,986 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:10:41,987 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:10:41,990 INFO  L85        PathProgramCache]: Analyzing trace with hash -1797144591, now seen corresponding path program 1 times
[2023-11-29 06:10:41,990 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:10:41,990 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510710054]
[2023-11-29 06:10:41,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:41,990 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:10:42,375 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:10:42,375 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834197971]
[2023-11-29 06:10:42,376 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:42,377 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:42,377 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:10:42,378 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:10:42,379 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 06:10:47,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:10:47,426 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23120 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:10:47,486 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:10:47,572 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:10:47,572 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:10:47,572 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:10:47,573 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510710054]
[2023-11-29 06:10:47,573 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:10:47,573 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834197971]
[2023-11-29 06:10:47,573 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [834197971] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:10:47,573 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:10:47,574 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:10:47,574 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131893409]
[2023-11-29 06:10:47,574 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:10:47,578 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:10:47,578 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:10:47,581 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:10:47,582 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:47,583 INFO  L87              Difference]: Start difference. First operand 7976 states and 13304 transitions. Second operand  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:47,751 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:10:47,752 INFO  L93              Difference]: Finished difference Result 14863 states and 24794 transitions.
[2023-11-29 06:10:47,752 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:10:47,753 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 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 5197
[2023-11-29 06:10:47,755 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:10:47,761 INFO  L225             Difference]: With dead ends: 14863
[2023-11-29 06:10:47,761 INFO  L226             Difference]: Without dead ends: 7985
[2023-11-29 06:10:47,764 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5196 GetRequests, 5194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:47,765 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 12 mSDsluCounter, 23694 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35546 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:10:47,765 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35546 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:10:47,772 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7985 states.
[2023-11-29 06:10:47,823 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7985 to 7977.
[2023-11-29 06:10:47,829 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7977 states, 7976 states have (on average 1.6681293881644934) internal successors, (13305), 7976 states have internal predecessors, (13305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:47,837 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7977 states to 7977 states and 13305 transitions.
[2023-11-29 06:10:47,838 INFO  L78                 Accepts]: Start accepts. Automaton has 7977 states and 13305 transitions. Word has length 5197
[2023-11-29 06:10:47,840 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:10:47,840 INFO  L495      AbstractCegarLoop]: Abstraction has 7977 states and 13305 transitions.
[2023-11-29 06:10:47,841 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:47,841 INFO  L276                IsEmpty]: Start isEmpty. Operand 7977 states and 13305 transitions.
[2023-11-29 06:10:47,948 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5198
[2023-11-29 06:10:47,948 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:10:47,951 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:10:48,005 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 06:10:48,152 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 06:10:48,153 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:10:48,153 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:10:48,154 INFO  L85        PathProgramCache]: Analyzing trace with hash -204439617, now seen corresponding path program 1 times
[2023-11-29 06:10:48,154 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:10:48,155 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896991391]
[2023-11-29 06:10:48,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:48,155 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:10:48,519 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:10:48,519 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667956293]
[2023-11-29 06:10:48,520 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:48,520 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:48,521 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:10:48,521 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:10:48,522 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 06:10:53,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:10:53,812 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23121 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:10:53,872 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:10:53,977 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:10:53,977 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:10:53,977 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:10:53,977 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896991391]
[2023-11-29 06:10:53,977 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:10:53,977 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667956293]
[2023-11-29 06:10:53,977 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667956293] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:10:53,978 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:10:53,978 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:10:53,979 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453153207]
[2023-11-29 06:10:53,979 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:10:53,982 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:10:53,982 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:10:53,986 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:10:53,986 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:53,987 INFO  L87              Difference]: Start difference. First operand 7977 states and 13305 transitions. Second operand  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:54,136 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:10:54,136 INFO  L93              Difference]: Finished difference Result 14865 states and 24796 transitions.
[2023-11-29 06:10:54,137 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:10:54,138 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 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 5197
[2023-11-29 06:10:54,140 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:10:54,146 INFO  L225             Difference]: With dead ends: 14865
[2023-11-29 06:10:54,146 INFO  L226             Difference]: Without dead ends: 7986
[2023-11-29 06:10:54,150 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5196 GetRequests, 5194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:10:54,151 INFO  L413           NwaCegarLoop]: 11852 mSDtfsCounter, 12 mSDsluCounter, 23694 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35546 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:10:54,151 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35546 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:10:54,158 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7986 states.
[2023-11-29 06:10:54,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7986 to 7978.
[2023-11-29 06:10:54,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.6680456311896703) internal successors, (13306), 7977 states have internal predecessors, (13306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:54,223 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13306 transitions.
[2023-11-29 06:10:54,224 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13306 transitions. Word has length 5197
[2023-11-29 06:10:54,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:10:54,225 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13306 transitions.
[2023-11-29 06:10:54,226 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1299.25) internal successors, (5197), 4 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:10:54,226 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13306 transitions.
[2023-11-29 06:10:54,415 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5198
[2023-11-29 06:10:54,415 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:10:54,417 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:10:54,477 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 06:10:54,630 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:54,631 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:10:54,631 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:10:54,634 INFO  L85        PathProgramCache]: Analyzing trace with hash 845859981, now seen corresponding path program 1 times
[2023-11-29 06:10:54,634 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:10:54,634 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629953099]
[2023-11-29 06:10:54,635 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:54,635 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:10:55,005 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:10:55,005 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670052393]
[2023-11-29 06:10:55,006 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:10:55,006 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:10:55,006 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:10:55,007 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:10:55,008 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 06:11:00,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:11:00,318 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23122 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:11:00,401 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:11:00,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked.
[2023-11-29 06:11:00,724 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:11:00,724 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:11:00,724 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629953099]
[2023-11-29 06:11:00,724 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:11:00,724 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670052393]
[2023-11-29 06:11:00,725 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670052393] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:11:00,725 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:11:00,726 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:11:00,726 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731224221]
[2023-11-29 06:11:00,726 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:11:00,732 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:11:00,732 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:11:00,737 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:11:00,737 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:11:00,739 INFO  L87              Difference]: Start difference. First operand 7978 states and 13306 transitions. Second operand  has 7 states, 7 states have (on average 660.5714285714286) internal successors, (4624), 7 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:01,304 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:11:01,304 INFO  L93              Difference]: Finished difference Result 21735 states and 36256 transitions.
[2023-11-29 06:11:01,304 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:11:01,305 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 660.5714285714286) internal successors, (4624), 7 states have internal predecessors, (4624), 0 states have call successors, (0), 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 5197
[2023-11-29 06:11:01,309 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:11:01,319 INFO  L225             Difference]: With dead ends: 21735
[2023-11-29 06:11:01,319 INFO  L226             Difference]: Without dead ends: 14855
[2023-11-29 06:11:01,324 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5206 GetRequests, 5194 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:11:01,325 INFO  L413           NwaCegarLoop]: 13284 mSDtfsCounter, 33180 mSDsluCounter, 51686 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33180 SdHoareTripleChecker+Valid, 64970 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:11:01,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33180 Valid, 64970 Invalid, 47 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:11:01,337 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14855 states.
[2023-11-29 06:11:01,412 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14855 to 7978.
[2023-11-29 06:11:01,419 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.6680456311896703) internal successors, (13306), 7977 states have internal predecessors, (13306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:01,427 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13306 transitions.
[2023-11-29 06:11:01,427 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13306 transitions. Word has length 5197
[2023-11-29 06:11:01,430 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:11:01,430 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13306 transitions.
[2023-11-29 06:11:01,431 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 660.5714285714286) internal successors, (4624), 7 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:01,431 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13306 transitions.
[2023-11-29 06:11:01,538 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5199
[2023-11-29 06:11:01,538 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:11:01,540 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:11:01,599 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 06:11:01,741 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:01,741 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:11:01,741 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:11:01,743 INFO  L85        PathProgramCache]: Analyzing trace with hash 341153503, now seen corresponding path program 1 times
[2023-11-29 06:11:01,743 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:11:01,743 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477466236]
[2023-11-29 06:11:01,743 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:01,744 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:11:02,155 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:11:02,155 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314889378]
[2023-11-29 06:11:02,156 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:02,156 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:02,156 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:11:02,157 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:11:02,158 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 06:11:07,265 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:11:07,406 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23125 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:11:07,480 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:11:07,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked.
[2023-11-29 06:11:07,746 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:11:07,746 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:11:07,746 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477466236]
[2023-11-29 06:11:07,746 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:11:07,746 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314889378]
[2023-11-29 06:11:07,746 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314889378] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:11:07,747 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:11:07,748 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:11:07,748 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480140601]
[2023-11-29 06:11:07,748 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:11:07,752 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:11:07,753 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:11:07,756 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:11:07,756 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:11:07,757 INFO  L87              Difference]: Start difference. First operand 7978 states and 13306 transitions. Second operand  has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:08,179 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:11:08,180 INFO  L93              Difference]: Finished difference Result 21737 states and 36258 transitions.
[2023-11-29 06:11:08,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:11:08,181 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 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 5198
[2023-11-29 06:11:08,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:11:08,197 INFO  L225             Difference]: With dead ends: 21737
[2023-11-29 06:11:08,197 INFO  L226             Difference]: Without dead ends: 14854
[2023-11-29 06:11:08,202 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5207 GetRequests, 5195 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:11:08,203 INFO  L413           NwaCegarLoop]: 13279 mSDtfsCounter, 33179 mSDsluCounter, 51670 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33179 SdHoareTripleChecker+Valid, 64949 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:11:08,203 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33179 Valid, 64949 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:11:08,214 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14854 states.
[2023-11-29 06:11:08,316 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14854 to 7980.
[2023-11-29 06:11:08,322 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7980 states, 7979 states have (on average 1.6678781802230855) internal successors, (13308), 7979 states have internal predecessors, (13308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:08,331 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7980 states to 7980 states and 13308 transitions.
[2023-11-29 06:11:08,331 INFO  L78                 Accepts]: Start accepts. Automaton has 7980 states and 13308 transitions. Word has length 5198
[2023-11-29 06:11:08,334 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:11:08,334 INFO  L495      AbstractCegarLoop]: Abstraction has 7980 states and 13308 transitions.
[2023-11-29 06:11:08,335 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:08,335 INFO  L276                IsEmpty]: Start isEmpty. Operand 7980 states and 13308 transitions.
[2023-11-29 06:11:08,441 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5200
[2023-11-29 06:11:08,442 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:11:08,444 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:11:08,502 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 06:11:08,644 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 06:11:08,644 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:11:08,645 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:11:08,646 INFO  L85        PathProgramCache]: Analyzing trace with hash 1787025255, now seen corresponding path program 1 times
[2023-11-29 06:11:08,646 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:11:08,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896227630]
[2023-11-29 06:11:08,647 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:08,647 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:11:09,099 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:11:09,099 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012614427]
[2023-11-29 06:11:09,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:09,100 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:09,101 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:11:09,101 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:11:09,103 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 06:11:14,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:11:14,254 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23128 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:11:14,322 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:11:14,567 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked.
[2023-11-29 06:11:14,567 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:11:14,567 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:11:14,567 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896227630]
[2023-11-29 06:11:14,567 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:11:14,567 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012614427]
[2023-11-29 06:11:14,568 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012614427] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:11:14,568 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:11:14,568 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:11:14,569 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705334651]
[2023-11-29 06:11:14,569 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:11:14,573 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:11:14,573 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:11:14,578 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:11:14,578 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:11:14,579 INFO  L87              Difference]: Start difference. First operand 7980 states and 13308 transitions. Second operand  has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:15,006 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:11:15,006 INFO  L93              Difference]: Finished difference Result 21743 states and 36264 transitions.
[2023-11-29 06:11:15,006 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:11:15,007 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 0 states have call successors, (0), 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 5199
[2023-11-29 06:11:15,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:11:15,024 INFO  L225             Difference]: With dead ends: 21743
[2023-11-29 06:11:15,024 INFO  L226             Difference]: Without dead ends: 14855
[2023-11-29 06:11:15,029 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5208 GetRequests, 5196 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:11:15,029 INFO  L413           NwaCegarLoop]: 13274 mSDtfsCounter, 33178 mSDsluCounter, 51655 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33178 SdHoareTripleChecker+Valid, 64929 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:11:15,029 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33178 Valid, 64929 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:11:15,040 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14855 states.
[2023-11-29 06:11:15,114 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14855 to 7982.
[2023-11-29 06:11:15,121 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7982 states, 7981 states have (on average 1.6677108131813057) internal successors, (13310), 7981 states have internal predecessors, (13310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:15,129 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7982 states to 7982 states and 13310 transitions.
[2023-11-29 06:11:15,129 INFO  L78                 Accepts]: Start accepts. Automaton has 7982 states and 13310 transitions. Word has length 5199
[2023-11-29 06:11:15,131 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:11:15,132 INFO  L495      AbstractCegarLoop]: Abstraction has 7982 states and 13310 transitions.
[2023-11-29 06:11:15,133 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:15,133 INFO  L276                IsEmpty]: Start isEmpty. Operand 7982 states and 13310 transitions.
[2023-11-29 06:11:15,239 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5201
[2023-11-29 06:11:15,239 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:11:15,240 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:11:15,298 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 06:11:15,440 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 06:11:15,441 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:11:15,441 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:11:15,442 INFO  L85        PathProgramCache]: Analyzing trace with hash -896800507, now seen corresponding path program 1 times
[2023-11-29 06:11:15,442 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:11:15,442 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138287199]
[2023-11-29 06:11:15,442 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:15,442 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:11:15,808 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:11:15,808 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712105138]
[2023-11-29 06:11:15,809 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:15,809 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:15,809 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:11:15,810 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:11:15,811 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 06:11:20,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:11:21,044 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23131 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:11:21,103 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:11:21,327 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked.
[2023-11-29 06:11:21,327 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:11:21,328 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:11:21,328 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138287199]
[2023-11-29 06:11:21,328 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:11:21,328 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712105138]
[2023-11-29 06:11:21,328 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712105138] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:11:21,328 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:11:21,329 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:11:21,329 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315044024]
[2023-11-29 06:11:21,329 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:11:21,331 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:11:21,331 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:11:21,334 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:11:21,334 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:11:21,335 INFO  L87              Difference]: Start difference. First operand 7982 states and 13310 transitions. Second operand  has 7 states, 7 states have (on average 661.8571428571429) internal successors, (4633), 7 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:21,758 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:11:21,758 INFO  L93              Difference]: Finished difference Result 21749 states and 36270 transitions.
[2023-11-29 06:11:21,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:11:21,759 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 661.8571428571429) internal successors, (4633), 7 states have internal predecessors, (4633), 0 states have call successors, (0), 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 5200
[2023-11-29 06:11:21,764 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:11:21,777 INFO  L225             Difference]: With dead ends: 21749
[2023-11-29 06:11:21,777 INFO  L226             Difference]: Without dead ends: 14856
[2023-11-29 06:11:21,782 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5209 GetRequests, 5197 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:11:21,783 INFO  L413           NwaCegarLoop]: 13269 mSDtfsCounter, 33177 mSDsluCounter, 51640 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33177 SdHoareTripleChecker+Valid, 64909 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:11:21,783 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33177 Valid, 64909 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:11:21,798 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14856 states.
[2023-11-29 06:11:21,889 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14856 to 7984.
[2023-11-29 06:11:21,895 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7984 states, 7983 states have (on average 1.6675435300012527) internal successors, (13312), 7983 states have internal predecessors, (13312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:21,903 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7984 states to 7984 states and 13312 transitions.
[2023-11-29 06:11:21,903 INFO  L78                 Accepts]: Start accepts. Automaton has 7984 states and 13312 transitions. Word has length 5200
[2023-11-29 06:11:21,906 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:11:21,906 INFO  L495      AbstractCegarLoop]: Abstraction has 7984 states and 13312 transitions.
[2023-11-29 06:11:21,907 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 661.8571428571429) internal successors, (4633), 7 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:21,907 INFO  L276                IsEmpty]: Start isEmpty. Operand 7984 states and 13312 transitions.
[2023-11-29 06:11:22,013 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5202
[2023-11-29 06:11:22,013 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:11:22,014 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:11:22,073 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-11-29 06:11:22,215 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 06:11:22,215 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:11:22,215 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:11:22,217 INFO  L85        PathProgramCache]: Analyzing trace with hash 894055363, now seen corresponding path program 1 times
[2023-11-29 06:11:22,217 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:11:22,217 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96697458]
[2023-11-29 06:11:22,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:22,218 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:11:22,580 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:11:22,580 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227038844]
[2023-11-29 06:11:22,581 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:22,581 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:22,581 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:11:22,582 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:11:22,583 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 06:11:27,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:11:28,006 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23135 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:11:28,064 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:11:28,277 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked.
[2023-11-29 06:11:28,277 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:11:28,278 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:11:28,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96697458]
[2023-11-29 06:11:28,278 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:11:28,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227038844]
[2023-11-29 06:11:28,278 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227038844] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:11:28,278 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:11:28,279 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:11:28,279 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71214161]
[2023-11-29 06:11:28,280 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:11:28,282 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:11:28,282 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:11:28,284 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:11:28,285 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:11:28,285 INFO  L87              Difference]: Start difference. First operand 7984 states and 13312 transitions. Second operand  has 7 states, 7 states have (on average 662.2857142857143) internal successors, (4636), 7 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:28,715 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:11:28,715 INFO  L93              Difference]: Finished difference Result 21755 states and 36276 transitions.
[2023-11-29 06:11:28,716 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:11:28,717 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 662.2857142857143) internal successors, (4636), 7 states have internal predecessors, (4636), 0 states have call successors, (0), 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 5201
[2023-11-29 06:11:28,721 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:11:28,733 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 06:11:28,733 INFO  L226             Difference]: Without dead ends: 14857
[2023-11-29 06:11:28,738 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5210 GetRequests, 5198 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:11:28,739 INFO  L413           NwaCegarLoop]: 13264 mSDtfsCounter, 33176 mSDsluCounter, 51625 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33176 SdHoareTripleChecker+Valid, 64889 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:11:28,739 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33176 Valid, 64889 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:11:28,750 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14857 states.
[2023-11-29 06:11:28,818 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14857 to 7986.
[2023-11-29 06:11:28,825 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7986 states, 7985 states have (on average 1.6673763306199123) internal successors, (13314), 7985 states have internal predecessors, (13314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:28,834 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7986 states to 7986 states and 13314 transitions.
[2023-11-29 06:11:28,834 INFO  L78                 Accepts]: Start accepts. Automaton has 7986 states and 13314 transitions. Word has length 5201
[2023-11-29 06:11:28,836 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:11:28,836 INFO  L495      AbstractCegarLoop]: Abstraction has 7986 states and 13314 transitions.
[2023-11-29 06:11:28,837 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 662.2857142857143) internal successors, (4636), 7 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:28,837 INFO  L276                IsEmpty]: Start isEmpty. Operand 7986 states and 13314 transitions.
[2023-11-29 06:11:28,945 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5203
[2023-11-29 06:11:28,945 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:11:28,946 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:11:29,004 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 06:11:29,146 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 06:11:29,147 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:11:29,147 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:11:29,148 INFO  L85        PathProgramCache]: Analyzing trace with hash 137879725, now seen corresponding path program 1 times
[2023-11-29 06:11:29,148 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:11:29,148 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852088044]
[2023-11-29 06:11:29,148 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:29,148 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:11:29,508 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:11:29,508 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886324647]
[2023-11-29 06:11:29,509 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:29,509 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:29,510 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:11:29,510 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:11:29,512 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 06:11:34,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:11:34,820 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23138 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:11:34,878 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:11:35,094 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked.
[2023-11-29 06:11:35,094 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:11:35,094 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:11:35,094 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852088044]
[2023-11-29 06:11:35,094 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:11:35,094 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886324647]
[2023-11-29 06:11:35,095 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [886324647] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:11:35,095 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:11:35,095 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:11:35,096 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879026609]
[2023-11-29 06:11:35,096 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:11:35,098 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:11:35,098 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:11:35,100 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:11:35,100 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:11:35,101 INFO  L87              Difference]: Start difference. First operand 7986 states and 13314 transitions. Second operand  has 7 states, 7 states have (on average 662.7142857142857) internal successors, (4639), 7 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:35,525 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:11:35,525 INFO  L93              Difference]: Finished difference Result 21761 states and 36282 transitions.
[2023-11-29 06:11:35,525 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:11:35,527 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 662.7142857142857) internal successors, (4639), 7 states have internal predecessors, (4639), 0 states have call successors, (0), 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 5202
[2023-11-29 06:11:35,530 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:11:35,548 INFO  L225             Difference]: With dead ends: 21761
[2023-11-29 06:11:35,548 INFO  L226             Difference]: Without dead ends: 14858
[2023-11-29 06:11:35,555 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5211 GetRequests, 5199 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:11:35,556 INFO  L413           NwaCegarLoop]: 13259 mSDtfsCounter, 33175 mSDsluCounter, 51610 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33175 SdHoareTripleChecker+Valid, 64869 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:11:35,556 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33175 Valid, 64869 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:11:35,571 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14858 states.
[2023-11-29 06:11:35,646 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14858 to 7988.
[2023-11-29 06:11:35,653 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7988 states, 7987 states have (on average 1.6672092149743334) internal successors, (13316), 7987 states have internal predecessors, (13316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:35,662 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7988 states to 7988 states and 13316 transitions.
[2023-11-29 06:11:35,662 INFO  L78                 Accepts]: Start accepts. Automaton has 7988 states and 13316 transitions. Word has length 5202
[2023-11-29 06:11:35,665 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:11:35,665 INFO  L495      AbstractCegarLoop]: Abstraction has 7988 states and 13316 transitions.
[2023-11-29 06:11:35,666 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 662.7142857142857) internal successors, (4639), 7 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:35,666 INFO  L276                IsEmpty]: Start isEmpty. Operand 7988 states and 13316 transitions.
[2023-11-29 06:11:35,773 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5204
[2023-11-29 06:11:35,773 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:11:35,774 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:11:35,834 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 06:11:35,974 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 06:11:35,975 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:11:35,975 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:11:35,976 INFO  L85        PathProgramCache]: Analyzing trace with hash 653359773, now seen corresponding path program 1 times
[2023-11-29 06:11:35,976 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:11:35,976 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314811210]
[2023-11-29 06:11:35,977 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:35,977 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:11:36,341 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:11:36,341 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489743999]
[2023-11-29 06:11:36,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:36,342 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:36,342 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:11:36,343 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:11:36,344 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 06:11:41,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:11:41,699 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23141 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:11:41,759 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:11:41,977 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked.
[2023-11-29 06:11:41,977 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:11:41,977 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:11:41,977 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314811210]
[2023-11-29 06:11:41,977 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:11:41,978 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489743999]
[2023-11-29 06:11:41,978 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489743999] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:11:41,978 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:11:41,979 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:11:41,979 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684253031]
[2023-11-29 06:11:41,979 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:11:41,981 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:11:41,981 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:11:41,984 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:11:41,984 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:11:41,985 INFO  L87              Difference]: Start difference. First operand 7988 states and 13316 transitions. Second operand  has 7 states, 7 states have (on average 663.1428571428571) internal successors, (4642), 7 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:42,404 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:11:42,404 INFO  L93              Difference]: Finished difference Result 21767 states and 36288 transitions.
[2023-11-29 06:11:42,404 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:11:42,405 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 663.1428571428571) internal successors, (4642), 7 states have internal predecessors, (4642), 0 states have call successors, (0), 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 5203
[2023-11-29 06:11:42,409 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:11:42,426 INFO  L225             Difference]: With dead ends: 21767
[2023-11-29 06:11:42,427 INFO  L226             Difference]: Without dead ends: 14859
[2023-11-29 06:11:42,432 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5212 GetRequests, 5200 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:11:42,433 INFO  L413           NwaCegarLoop]: 13254 mSDtfsCounter, 33174 mSDsluCounter, 51595 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33174 SdHoareTripleChecker+Valid, 64849 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:11:42,433 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33174 Valid, 64849 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:11:42,445 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14859 states.
[2023-11-29 06:11:42,516 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14859 to 7990.
[2023-11-29 06:11:42,523 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7990 states, 7989 states have (on average 1.6670421830016273) internal successors, (13318), 7989 states have internal predecessors, (13318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:42,531 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7990 states to 7990 states and 13318 transitions.
[2023-11-29 06:11:42,532 INFO  L78                 Accepts]: Start accepts. Automaton has 7990 states and 13318 transitions. Word has length 5203
[2023-11-29 06:11:42,534 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:11:42,534 INFO  L495      AbstractCegarLoop]: Abstraction has 7990 states and 13318 transitions.
[2023-11-29 06:11:42,535 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 663.1428571428571) internal successors, (4642), 7 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:42,535 INFO  L276                IsEmpty]: Start isEmpty. Operand 7990 states and 13318 transitions.
[2023-11-29 06:11:42,643 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5205
[2023-11-29 06:11:42,643 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:11:42,644 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:11:42,703 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-11-29 06:11:42,844 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:42,845 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:11:42,845 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:11:42,846 INFO  L85        PathProgramCache]: Analyzing trace with hash 1190319827, now seen corresponding path program 1 times
[2023-11-29 06:11:42,846 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:11:42,846 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281813582]
[2023-11-29 06:11:42,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:42,846 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:11:43,208 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:11:43,208 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7614995]
[2023-11-29 06:11:43,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:43,209 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:43,209 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:11:43,210 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:11:43,210 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 06:11:48,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:11:48,385 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23144 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:11:48,443 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:11:48,677 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked.
[2023-11-29 06:11:48,678 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:11:48,678 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:11:48,678 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281813582]
[2023-11-29 06:11:48,678 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:11:48,678 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7614995]
[2023-11-29 06:11:48,678 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [7614995] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:11:48,678 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:11:48,680 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:11:48,680 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488582339]
[2023-11-29 06:11:48,680 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:11:48,682 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:11:48,683 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:11:48,685 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:11:48,685 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:11:48,686 INFO  L87              Difference]: Start difference. First operand 7990 states and 13318 transitions. Second operand  has 7 states, 7 states have (on average 663.5714285714286) internal successors, (4645), 7 states have internal predecessors, (4645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:49,105 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:11:49,106 INFO  L93              Difference]: Finished difference Result 21773 states and 36294 transitions.
[2023-11-29 06:11:49,106 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:11:49,107 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 663.5714285714286) internal successors, (4645), 7 states have internal predecessors, (4645), 0 states have call successors, (0), 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 5204
[2023-11-29 06:11:49,111 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:11:49,124 INFO  L225             Difference]: With dead ends: 21773
[2023-11-29 06:11:49,124 INFO  L226             Difference]: Without dead ends: 14860
[2023-11-29 06:11:49,130 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5213 GetRequests, 5201 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:11:49,131 INFO  L413           NwaCegarLoop]: 13249 mSDtfsCounter, 33173 mSDsluCounter, 51580 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33173 SdHoareTripleChecker+Valid, 64829 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:11:49,131 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33173 Valid, 64829 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:11:49,142 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14860 states.
[2023-11-29 06:11:49,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14860 to 7992.
[2023-11-29 06:11:49,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7992 states, 7991 states have (on average 1.6668752346389688) internal successors, (13320), 7991 states have internal predecessors, (13320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:49,224 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7992 states to 7992 states and 13320 transitions.
[2023-11-29 06:11:49,224 INFO  L78                 Accepts]: Start accepts. Automaton has 7992 states and 13320 transitions. Word has length 5204
[2023-11-29 06:11:49,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:11:49,227 INFO  L495      AbstractCegarLoop]: Abstraction has 7992 states and 13320 transitions.
[2023-11-29 06:11:49,228 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 663.5714285714286) internal successors, (4645), 7 states have internal predecessors, (4645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:49,228 INFO  L276                IsEmpty]: Start isEmpty. Operand 7992 states and 13320 transitions.
[2023-11-29 06:11:49,334 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5206
[2023-11-29 06:11:49,334 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:11:49,336 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:11:49,396 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 06:11:49,536 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:49,537 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:11:49,537 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:11:49,538 INFO  L85        PathProgramCache]: Analyzing trace with hash 1002250233, now seen corresponding path program 1 times
[2023-11-29 06:11:49,538 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:11:49,538 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497378234]
[2023-11-29 06:11:49,538 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:49,539 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:11:49,899 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:11:49,899 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906231143]
[2023-11-29 06:11:49,900 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:49,900 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:49,900 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:11:49,901 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:11:49,903 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 06:11:55,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:11:55,253 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23148 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:11:55,309 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:11:55,529 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked.
[2023-11-29 06:11:55,529 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:11:55,530 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:11:55,530 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497378234]
[2023-11-29 06:11:55,530 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:11:55,530 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906231143]
[2023-11-29 06:11:55,530 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906231143] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:11:55,530 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:11:55,531 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:11:55,531 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754667225]
[2023-11-29 06:11:55,531 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:11:55,534 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:11:55,534 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:11:55,537 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:11:55,537 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:11:55,539 INFO  L87              Difference]: Start difference. First operand 7992 states and 13320 transitions. Second operand  has 7 states, 7 states have (on average 664.0) internal successors, (4648), 7 states have internal predecessors, (4648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:55,963 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:11:55,963 INFO  L93              Difference]: Finished difference Result 21779 states and 36300 transitions.
[2023-11-29 06:11:55,963 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:11:55,964 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 664.0) internal successors, (4648), 7 states have internal predecessors, (4648), 0 states have call successors, (0), 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 5205
[2023-11-29 06:11:55,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:11:55,978 INFO  L225             Difference]: With dead ends: 21779
[2023-11-29 06:11:55,978 INFO  L226             Difference]: Without dead ends: 14861
[2023-11-29 06:11:55,983 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5214 GetRequests, 5202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:11:55,984 INFO  L413           NwaCegarLoop]: 13244 mSDtfsCounter, 33172 mSDsluCounter, 51565 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33172 SdHoareTripleChecker+Valid, 64809 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:11:55,984 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33172 Valid, 64809 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:11:55,995 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14861 states.
[2023-11-29 06:11:56,064 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14861 to 7994.
[2023-11-29 06:11:56,071 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7994 states, 7993 states have (on average 1.6667083698235956) internal successors, (13322), 7993 states have internal predecessors, (13322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:56,079 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7994 states to 7994 states and 13322 transitions.
[2023-11-29 06:11:56,079 INFO  L78                 Accepts]: Start accepts. Automaton has 7994 states and 13322 transitions. Word has length 5205
[2023-11-29 06:11:56,081 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:11:56,082 INFO  L495      AbstractCegarLoop]: Abstraction has 7994 states and 13322 transitions.
[2023-11-29 06:11:56,082 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 664.0) internal successors, (4648), 7 states have internal predecessors, (4648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:11:56,082 INFO  L276                IsEmpty]: Start isEmpty. Operand 7994 states and 13322 transitions.
[2023-11-29 06:11:56,188 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5207
[2023-11-29 06:11:56,188 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:11:56,190 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1]
[2023-11-29 06:11:56,248 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 06:11:56,390 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:56,390 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:11:56,391 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:11:56,392 INFO  L85        PathProgramCache]: Analyzing trace with hash -1964638341, now seen corresponding path program 1 times
[2023-11-29 06:11:56,392 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:11:56,392 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438863090]
[2023-11-29 06:11:56,392 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:56,392 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:11:56,760 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:11:56,760 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698257622]
[2023-11-29 06:11:56,761 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:11:56,761 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:11:56,761 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:11:56,762 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:11:56,763 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 06:12:01,847 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:12:01,988 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23151 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:12:02,205 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:12:02,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked.
[2023-11-29 06:12:02,422 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:12:02,422 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:12:02,422 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438863090]
[2023-11-29 06:12:02,422 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:12:02,422 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698257622]
[2023-11-29 06:12:02,422 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698257622] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:12:02,422 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:12:02,424 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:12:02,424 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413965613]
[2023-11-29 06:12:02,424 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:12:02,426 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:12:02,427 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:12:02,429 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:12:02,429 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:12:02,430 INFO  L87              Difference]: Start difference. First operand 7994 states and 13322 transitions. Second operand  has 7 states, 7 states have (on average 664.4285714285714) internal successors, (4651), 7 states have internal predecessors, (4651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:02,867 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:12:02,867 INFO  L93              Difference]: Finished difference Result 21785 states and 36306 transitions.
[2023-11-29 06:12:02,867 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:12:02,869 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 664.4285714285714) internal successors, (4651), 7 states have internal predecessors, (4651), 0 states have call successors, (0), 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 5206
[2023-11-29 06:12:02,872 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:12:02,883 INFO  L225             Difference]: With dead ends: 21785
[2023-11-29 06:12:02,883 INFO  L226             Difference]: Without dead ends: 14862
[2023-11-29 06:12:02,888 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5215 GetRequests, 5203 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:12:02,889 INFO  L413           NwaCegarLoop]: 13239 mSDtfsCounter, 33171 mSDsluCounter, 51550 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33171 SdHoareTripleChecker+Valid, 64789 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:12:02,889 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33171 Valid, 64789 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:12:02,900 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14862 states.
[2023-11-29 06:12:02,967 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14862 to 7996.
[2023-11-29 06:12:02,973 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7996 states, 7995 states have (on average 1.666541588492808) internal successors, (13324), 7995 states have internal predecessors, (13324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:02,982 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 13324 transitions.
[2023-11-29 06:12:02,982 INFO  L78                 Accepts]: Start accepts. Automaton has 7996 states and 13324 transitions. Word has length 5206
[2023-11-29 06:12:02,985 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:12:02,985 INFO  L495      AbstractCegarLoop]: Abstraction has 7996 states and 13324 transitions.
[2023-11-29 06:12:02,986 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 664.4285714285714) internal successors, (4651), 7 states have internal predecessors, (4651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:02,986 INFO  L276                IsEmpty]: Start isEmpty. Operand 7996 states and 13324 transitions.
[2023-11-29 06:12:03,092 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5208
[2023-11-29 06:12:03,092 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:12:03,094 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:12:03,156 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2023-11-29 06:12:03,294 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:03,295 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:12:03,295 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:12:03,296 INFO  L85        PathProgramCache]: Analyzing trace with hash 1298604755, now seen corresponding path program 1 times
[2023-11-29 06:12:03,297 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:12:03,297 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293107217]
[2023-11-29 06:12:03,298 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:03,298 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:12:03,792 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:12:03,792 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237502322]
[2023-11-29 06:12:03,793 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:03,793 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:03,793 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:12:03,794 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:12:03,795 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 06:12:08,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:12:08,799 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23154 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:12:08,875 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:12:09,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked.
[2023-11-29 06:12:09,107 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:12:09,107 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:12:09,107 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293107217]
[2023-11-29 06:12:09,108 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:12:09,108 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237502322]
[2023-11-29 06:12:09,108 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237502322] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:12:09,108 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:12:09,109 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:12:09,109 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875340431]
[2023-11-29 06:12:09,109 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:12:09,113 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:12:09,113 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:12:09,117 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:12:09,117 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:12:09,118 INFO  L87              Difference]: Start difference. First operand 7996 states and 13324 transitions. Second operand  has 7 states, 7 states have (on average 664.8571428571429) internal successors, (4654), 7 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:09,542 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:12:09,542 INFO  L93              Difference]: Finished difference Result 21791 states and 36312 transitions.
[2023-11-29 06:12:09,542 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:12:09,543 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 664.8571428571429) internal successors, (4654), 7 states have internal predecessors, (4654), 0 states have call successors, (0), 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 5207
[2023-11-29 06:12:09,546 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:12:09,557 INFO  L225             Difference]: With dead ends: 21791
[2023-11-29 06:12:09,557 INFO  L226             Difference]: Without dead ends: 14863
[2023-11-29 06:12:09,563 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5216 GetRequests, 5204 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:12:09,563 INFO  L413           NwaCegarLoop]: 13234 mSDtfsCounter, 33170 mSDsluCounter, 51535 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33170 SdHoareTripleChecker+Valid, 64769 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:12:09,563 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33170 Valid, 64769 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:12:09,574 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14863 states.
[2023-11-29 06:12:09,641 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14863 to 7998.
[2023-11-29 06:12:09,647 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7998 states, 7997 states have (on average 1.666374890583969) internal successors, (13326), 7997 states have internal predecessors, (13326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:09,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7998 states to 7998 states and 13326 transitions.
[2023-11-29 06:12:09,656 INFO  L78                 Accepts]: Start accepts. Automaton has 7998 states and 13326 transitions. Word has length 5207
[2023-11-29 06:12:09,659 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:12:09,659 INFO  L495      AbstractCegarLoop]: Abstraction has 7998 states and 13326 transitions.
[2023-11-29 06:12:09,660 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 664.8571428571429) internal successors, (4654), 7 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:09,660 INFO  L276                IsEmpty]: Start isEmpty. Operand 7998 states and 13326 transitions.
[2023-11-29 06:12:09,766 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5209
[2023-11-29 06:12:09,767 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:12:09,768 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1]
[2023-11-29 06:12:09,838 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 06:12:09,969 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2023-11-29 06:12:09,969 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:12:09,969 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:12:09,971 INFO  L85        PathProgramCache]: Analyzing trace with hash -1003415135, now seen corresponding path program 1 times
[2023-11-29 06:12:09,971 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:12:09,971 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906904709]
[2023-11-29 06:12:09,971 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:09,972 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:12:10,332 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:12:10,332 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932914327]
[2023-11-29 06:12:10,333 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:10,333 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:10,334 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:12:10,334 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:12:10,335 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 06:12:15,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:12:15,432 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23157 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:12:15,490 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:12:15,715 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked.
[2023-11-29 06:12:15,716 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:12:15,716 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:12:15,716 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906904709]
[2023-11-29 06:12:15,716 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:12:15,716 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932914327]
[2023-11-29 06:12:15,716 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932914327] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:12:15,716 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:12:15,718 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:12:15,718 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576744666]
[2023-11-29 06:12:15,718 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:12:15,721 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:12:15,721 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:12:15,723 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:12:15,723 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:12:15,724 INFO  L87              Difference]: Start difference. First operand 7998 states and 13326 transitions. Second operand  has 7 states, 7 states have (on average 665.2857142857143) internal successors, (4657), 7 states have internal predecessors, (4657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:16,165 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:12:16,165 INFO  L93              Difference]: Finished difference Result 21797 states and 36318 transitions.
[2023-11-29 06:12:16,165 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:12:16,167 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 665.2857142857143) internal successors, (4657), 7 states have internal predecessors, (4657), 0 states have call successors, (0), 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 5208
[2023-11-29 06:12:16,170 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:12:16,182 INFO  L225             Difference]: With dead ends: 21797
[2023-11-29 06:12:16,182 INFO  L226             Difference]: Without dead ends: 14864
[2023-11-29 06:12:16,187 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5217 GetRequests, 5205 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:12:16,188 INFO  L413           NwaCegarLoop]: 13229 mSDtfsCounter, 33169 mSDsluCounter, 51520 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33169 SdHoareTripleChecker+Valid, 64749 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:12:16,188 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33169 Valid, 64749 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:12:16,198 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14864 states.
[2023-11-29 06:12:16,265 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14864 to 8000.
[2023-11-29 06:12:16,271 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8000 states, 7999 states have (on average 1.6662082760345043) internal successors, (13328), 7999 states have internal predecessors, (13328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:16,280 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8000 states to 8000 states and 13328 transitions.
[2023-11-29 06:12:16,280 INFO  L78                 Accepts]: Start accepts. Automaton has 8000 states and 13328 transitions. Word has length 5208
[2023-11-29 06:12:16,282 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:12:16,282 INFO  L495      AbstractCegarLoop]: Abstraction has 8000 states and 13328 transitions.
[2023-11-29 06:12:16,283 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 665.2857142857143) internal successors, (4657), 7 states have internal predecessors, (4657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:16,283 INFO  L276                IsEmpty]: Start isEmpty. Operand 8000 states and 13328 transitions.
[2023-11-29 06:12:16,390 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5210
[2023-11-29 06:12:16,390 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:12:16,391 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:12:16,449 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-11-29 06:12:16,591 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2023-11-29 06:12:16,592 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:12:16,592 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:12:16,593 INFO  L85        PathProgramCache]: Analyzing trace with hash -35581649, now seen corresponding path program 1 times
[2023-11-29 06:12:16,593 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:12:16,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193240710]
[2023-11-29 06:12:16,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:16,594 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:12:16,955 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:12:16,955 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413638133]
[2023-11-29 06:12:16,956 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:16,956 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:16,956 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:12:16,957 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:12:16,958 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 06:12:22,199 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:12:22,341 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23161 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:12:22,399 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:12:22,628 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked.
[2023-11-29 06:12:22,628 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:12:22,628 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:12:22,628 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193240710]
[2023-11-29 06:12:22,628 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:12:22,628 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413638133]
[2023-11-29 06:12:22,628 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413638133] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:12:22,629 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:12:22,630 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:12:22,630 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812162145]
[2023-11-29 06:12:22,630 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:12:22,632 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:12:22,632 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:12:22,635 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:12:22,635 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:12:22,636 INFO  L87              Difference]: Start difference. First operand 8000 states and 13328 transitions. Second operand  has 7 states, 7 states have (on average 665.7142857142857) internal successors, (4660), 7 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:23,054 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:12:23,054 INFO  L93              Difference]: Finished difference Result 21803 states and 36324 transitions.
[2023-11-29 06:12:23,055 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:12:23,056 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 665.7142857142857) internal successors, (4660), 7 states have internal predecessors, (4660), 0 states have call successors, (0), 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 5209
[2023-11-29 06:12:23,059 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:12:23,070 INFO  L225             Difference]: With dead ends: 21803
[2023-11-29 06:12:23,071 INFO  L226             Difference]: Without dead ends: 14865
[2023-11-29 06:12:23,076 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5218 GetRequests, 5206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:12:23,077 INFO  L413           NwaCegarLoop]: 13224 mSDtfsCounter, 33168 mSDsluCounter, 51505 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33168 SdHoareTripleChecker+Valid, 64729 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:12:23,077 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33168 Valid, 64729 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:12:23,088 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14865 states.
[2023-11-29 06:12:23,156 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14865 to 8002.
[2023-11-29 06:12:23,163 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8002 states, 8001 states have (on average 1.6660417447819023) internal successors, (13330), 8001 states have internal predecessors, (13330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:23,171 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8002 states to 8002 states and 13330 transitions.
[2023-11-29 06:12:23,171 INFO  L78                 Accepts]: Start accepts. Automaton has 8002 states and 13330 transitions. Word has length 5209
[2023-11-29 06:12:23,174 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:12:23,174 INFO  L495      AbstractCegarLoop]: Abstraction has 8002 states and 13330 transitions.
[2023-11-29 06:12:23,175 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 665.7142857142857) internal successors, (4660), 7 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:23,175 INFO  L276                IsEmpty]: Start isEmpty. Operand 8002 states and 13330 transitions.
[2023-11-29 06:12:23,282 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5211
[2023-11-29 06:12:23,282 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:12:23,283 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:12:23,341 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-11-29 06:12:23,483 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-11-29 06:12:23,484 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:12:23,484 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:12:23,484 INFO  L85        PathProgramCache]: Analyzing trace with hash -1515490487, now seen corresponding path program 1 times
[2023-11-29 06:12:23,484 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:12:23,484 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198288611]
[2023-11-29 06:12:23,485 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:23,485 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:12:23,847 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:12:23,847 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653365372]
[2023-11-29 06:12:23,848 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:23,848 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:23,848 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:12:23,849 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:12:23,850 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 06:12:28,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:12:29,025 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23164 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:12:29,084 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:12:29,313 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked.
[2023-11-29 06:12:29,313 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:12:29,314 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:12:29,314 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198288611]
[2023-11-29 06:12:29,314 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:12:29,314 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653365372]
[2023-11-29 06:12:29,314 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [653365372] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:12:29,314 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:12:29,315 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:12:29,315 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047900312]
[2023-11-29 06:12:29,315 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:12:29,318 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:12:29,318 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:12:29,321 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:12:29,321 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:12:29,322 INFO  L87              Difference]: Start difference. First operand 8002 states and 13330 transitions. Second operand  has 7 states, 7 states have (on average 666.1428571428571) internal successors, (4663), 7 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:29,738 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:12:29,738 INFO  L93              Difference]: Finished difference Result 21809 states and 36330 transitions.
[2023-11-29 06:12:29,738 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:12:29,740 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 666.1428571428571) internal successors, (4663), 7 states have internal predecessors, (4663), 0 states have call successors, (0), 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 5210
[2023-11-29 06:12:29,743 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:12:29,754 INFO  L225             Difference]: With dead ends: 21809
[2023-11-29 06:12:29,754 INFO  L226             Difference]: Without dead ends: 14866
[2023-11-29 06:12:29,759 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5219 GetRequests, 5207 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:12:29,760 INFO  L413           NwaCegarLoop]: 13219 mSDtfsCounter, 33167 mSDsluCounter, 51490 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33167 SdHoareTripleChecker+Valid, 64709 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:12:29,760 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33167 Valid, 64709 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:12:29,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14866 states.
[2023-11-29 06:12:29,839 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14866 to 8004.
[2023-11-29 06:12:29,846 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8004 states, 8003 states have (on average 1.6658752967637136) internal successors, (13332), 8003 states have internal predecessors, (13332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:29,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8004 states to 8004 states and 13332 transitions.
[2023-11-29 06:12:29,854 INFO  L78                 Accepts]: Start accepts. Automaton has 8004 states and 13332 transitions. Word has length 5210
[2023-11-29 06:12:29,857 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:12:29,857 INFO  L495      AbstractCegarLoop]: Abstraction has 8004 states and 13332 transitions.
[2023-11-29 06:12:29,858 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 666.1428571428571) internal successors, (4663), 7 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:29,858 INFO  L276                IsEmpty]: Start isEmpty. Operand 8004 states and 13332 transitions.
[2023-11-29 06:12:29,964 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5212
[2023-11-29 06:12:29,965 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:12:29,965 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:12:30,024 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2023-11-29 06:12:30,166 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-11-29 06:12:30,166 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:12:30,166 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:12:30,167 INFO  L85        PathProgramCache]: Analyzing trace with hash 1879199753, now seen corresponding path program 1 times
[2023-11-29 06:12:30,167 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:12:30,167 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565107844]
[2023-11-29 06:12:30,168 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:30,168 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:12:30,529 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:12:30,529 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166538087]
[2023-11-29 06:12:30,530 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:30,530 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:30,530 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:12:30,530 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:12:30,531 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-29 06:12:35,809 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:12:35,946 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23167 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:12:36,003 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:12:36,225 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked.
[2023-11-29 06:12:36,226 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:12:36,226 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:12:36,226 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565107844]
[2023-11-29 06:12:36,226 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:12:36,226 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166538087]
[2023-11-29 06:12:36,226 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166538087] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:12:36,226 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:12:36,227 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:12:36,228 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800884941]
[2023-11-29 06:12:36,228 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:12:36,230 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:12:36,230 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:12:36,233 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:12:36,233 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:12:36,234 INFO  L87              Difference]: Start difference. First operand 8004 states and 13332 transitions. Second operand  has 7 states, 7 states have (on average 666.5714285714286) internal successors, (4666), 7 states have internal predecessors, (4666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:36,657 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:12:36,657 INFO  L93              Difference]: Finished difference Result 21815 states and 36336 transitions.
[2023-11-29 06:12:36,658 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:12:36,659 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 666.5714285714286) internal successors, (4666), 7 states have internal predecessors, (4666), 0 states have call successors, (0), 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 5211
[2023-11-29 06:12:36,662 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:12:36,672 INFO  L225             Difference]: With dead ends: 21815
[2023-11-29 06:12:36,673 INFO  L226             Difference]: Without dead ends: 14867
[2023-11-29 06:12:36,678 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5220 GetRequests, 5208 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:12:36,678 INFO  L413           NwaCegarLoop]: 13214 mSDtfsCounter, 33166 mSDsluCounter, 51475 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33166 SdHoareTripleChecker+Valid, 64689 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:12:36,678 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33166 Valid, 64689 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:12:36,689 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14867 states.
[2023-11-29 06:12:36,756 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14867 to 8006.
[2023-11-29 06:12:36,762 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8006 states, 8005 states have (on average 1.6657089319175515) internal successors, (13334), 8005 states have internal predecessors, (13334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:36,771 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8006 states to 8006 states and 13334 transitions.
[2023-11-29 06:12:36,771 INFO  L78                 Accepts]: Start accepts. Automaton has 8006 states and 13334 transitions. Word has length 5211
[2023-11-29 06:12:36,773 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:12:36,773 INFO  L495      AbstractCegarLoop]: Abstraction has 8006 states and 13334 transitions.
[2023-11-29 06:12:36,774 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 666.5714285714286) internal successors, (4666), 7 states have internal predecessors, (4666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:36,774 INFO  L276                IsEmpty]: Start isEmpty. Operand 8006 states and 13334 transitions.
[2023-11-29 06:12:36,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5213
[2023-11-29 06:12:36,881 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:12:36,882 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:12:36,941 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2023-11-29 06:12:37,082 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2023-11-29 06:12:37,083 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:12:37,083 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:12:37,084 INFO  L85        PathProgramCache]: Analyzing trace with hash 1234317679, now seen corresponding path program 1 times
[2023-11-29 06:12:37,084 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:12:37,084 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935650250]
[2023-11-29 06:12:37,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:37,084 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:12:37,446 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:12:37,446 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281642725]
[2023-11-29 06:12:37,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:37,447 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:37,447 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:12:37,448 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:12:37,449 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-11-29 06:12:42,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:12:42,591 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23170 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:12:42,648 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:12:42,868 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2023-11-29 06:12:42,868 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:12:42,868 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:12:42,868 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935650250]
[2023-11-29 06:12:42,868 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:12:42,868 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281642725]
[2023-11-29 06:12:42,869 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [281642725] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:12:42,869 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:12:42,870 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:12:42,870 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187450905]
[2023-11-29 06:12:42,870 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:12:42,873 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:12:42,874 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:12:42,877 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:12:42,877 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:12:42,878 INFO  L87              Difference]: Start difference. First operand 8006 states and 13334 transitions. Second operand  has 7 states, 7 states have (on average 667.0) internal successors, (4669), 7 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:43,307 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:12:43,307 INFO  L93              Difference]: Finished difference Result 21821 states and 36342 transitions.
[2023-11-29 06:12:43,307 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:12:43,309 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 667.0) internal successors, (4669), 7 states have internal predecessors, (4669), 0 states have call successors, (0), 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 5212
[2023-11-29 06:12:43,312 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:12:43,323 INFO  L225             Difference]: With dead ends: 21821
[2023-11-29 06:12:43,323 INFO  L226             Difference]: Without dead ends: 14868
[2023-11-29 06:12:43,328 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5221 GetRequests, 5209 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:12:43,328 INFO  L413           NwaCegarLoop]: 13209 mSDtfsCounter, 33165 mSDsluCounter, 51460 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33165 SdHoareTripleChecker+Valid, 64669 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:12:43,329 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33165 Valid, 64669 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:12:43,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14868 states.
[2023-11-29 06:12:43,407 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14868 to 8008.
[2023-11-29 06:12:43,413 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8008 states, 8007 states have (on average 1.6655426501810915) internal successors, (13336), 8007 states have internal predecessors, (13336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:43,422 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8008 states to 8008 states and 13336 transitions.
[2023-11-29 06:12:43,422 INFO  L78                 Accepts]: Start accepts. Automaton has 8008 states and 13336 transitions. Word has length 5212
[2023-11-29 06:12:43,424 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:12:43,425 INFO  L495      AbstractCegarLoop]: Abstraction has 8008 states and 13336 transitions.
[2023-11-29 06:12:43,425 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 667.0) internal successors, (4669), 7 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:43,426 INFO  L276                IsEmpty]: Start isEmpty. Operand 8008 states and 13336 transitions.
[2023-11-29 06:12:43,532 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5214
[2023-11-29 06:12:43,532 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:12:43,533 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:12:43,592 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-11-29 06:12:43,734 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-11-29 06:12:43,734 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:12:43,734 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:12:43,735 INFO  L85        PathProgramCache]: Analyzing trace with hash 219383653, now seen corresponding path program 1 times
[2023-11-29 06:12:43,735 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:12:43,735 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529362404]
[2023-11-29 06:12:43,736 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:43,736 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:12:44,096 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:12:44,096 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745809636]
[2023-11-29 06:12:44,097 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:44,097 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:44,097 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:12:44,098 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:12:44,099 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-11-29 06:12:49,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:12:49,525 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23174 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:12:49,580 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:12:49,789 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked.
[2023-11-29 06:12:49,789 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:12:49,790 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:12:49,790 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529362404]
[2023-11-29 06:12:49,790 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:12:49,790 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745809636]
[2023-11-29 06:12:49,790 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745809636] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:12:49,790 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:12:49,791 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:12:49,791 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465037403]
[2023-11-29 06:12:49,791 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:12:49,794 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:12:49,794 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:12:49,796 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:12:49,797 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:12:49,797 INFO  L87              Difference]: Start difference. First operand 8008 states and 13336 transitions. Second operand  has 7 states, 7 states have (on average 667.4285714285714) internal successors, (4672), 7 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:50,204 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:12:50,204 INFO  L93              Difference]: Finished difference Result 21827 states and 36348 transitions.
[2023-11-29 06:12:50,204 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:12:50,205 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 667.4285714285714) internal successors, (4672), 7 states have internal predecessors, (4672), 0 states have call successors, (0), 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 5213
[2023-11-29 06:12:50,208 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:12:50,219 INFO  L225             Difference]: With dead ends: 21827
[2023-11-29 06:12:50,219 INFO  L226             Difference]: Without dead ends: 14869
[2023-11-29 06:12:50,224 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5222 GetRequests, 5210 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:12:50,225 INFO  L413           NwaCegarLoop]: 13204 mSDtfsCounter, 33164 mSDsluCounter, 51445 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33164 SdHoareTripleChecker+Valid, 64649 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:12:50,225 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33164 Valid, 64649 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:12:50,236 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14869 states.
[2023-11-29 06:12:50,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14869 to 8010.
[2023-11-29 06:12:50,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8010 states, 8009 states have (on average 1.6653764514920715) internal successors, (13338), 8009 states have internal predecessors, (13338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:50,318 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8010 states to 8010 states and 13338 transitions.
[2023-11-29 06:12:50,318 INFO  L78                 Accepts]: Start accepts. Automaton has 8010 states and 13338 transitions. Word has length 5213
[2023-11-29 06:12:50,321 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:12:50,321 INFO  L495      AbstractCegarLoop]: Abstraction has 8010 states and 13338 transitions.
[2023-11-29 06:12:50,322 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 667.4285714285714) internal successors, (4672), 7 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:50,322 INFO  L276                IsEmpty]: Start isEmpty. Operand 8010 states and 13338 transitions.
[2023-11-29 06:12:50,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5215
[2023-11-29 06:12:50,429 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:12:50,430 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:12:50,489 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-11-29 06:12:50,630 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-11-29 06:12:50,630 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:12:50,631 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:12:50,631 INFO  L85        PathProgramCache]: Analyzing trace with hash -485245929, now seen corresponding path program 1 times
[2023-11-29 06:12:50,631 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:12:50,631 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022694868]
[2023-11-29 06:12:50,633 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:50,633 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:12:50,992 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:12:50,992 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127673877]
[2023-11-29 06:12:50,993 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:50,993 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:50,993 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:12:50,994 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:12:50,995 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-11-29 06:12:55,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:12:56,022 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23177 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:12:56,079 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:12:56,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked.
[2023-11-29 06:12:56,303 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:12:56,303 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:12:56,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022694868]
[2023-11-29 06:12:56,303 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:12:56,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127673877]
[2023-11-29 06:12:56,303 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127673877] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:12:56,303 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:12:56,304 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:12:56,304 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379567888]
[2023-11-29 06:12:56,304 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:12:56,306 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:12:56,307 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:12:56,308 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:12:56,308 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:12:56,309 INFO  L87              Difference]: Start difference. First operand 8010 states and 13338 transitions. Second operand  has 7 states, 7 states have (on average 667.8571428571429) internal successors, (4675), 7 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:56,722 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:12:56,722 INFO  L93              Difference]: Finished difference Result 21833 states and 36354 transitions.
[2023-11-29 06:12:56,723 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:12:56,724 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 667.8571428571429) internal successors, (4675), 7 states have internal predecessors, (4675), 0 states have call successors, (0), 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 5214
[2023-11-29 06:12:56,727 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:12:56,738 INFO  L225             Difference]: With dead ends: 21833
[2023-11-29 06:12:56,738 INFO  L226             Difference]: Without dead ends: 14870
[2023-11-29 06:12:56,744 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5223 GetRequests, 5211 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:12:56,744 INFO  L413           NwaCegarLoop]: 13199 mSDtfsCounter, 33163 mSDsluCounter, 51430 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33163 SdHoareTripleChecker+Valid, 64629 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:12:56,744 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33163 Valid, 64629 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:12:56,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14870 states.
[2023-11-29 06:12:56,821 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14870 to 8012.
[2023-11-29 06:12:56,828 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8012 states, 8011 states have (on average 1.665210335788291) internal successors, (13340), 8011 states have internal predecessors, (13340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:56,837 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8012 states to 8012 states and 13340 transitions.
[2023-11-29 06:12:56,837 INFO  L78                 Accepts]: Start accepts. Automaton has 8012 states and 13340 transitions. Word has length 5214
[2023-11-29 06:12:56,839 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:12:56,839 INFO  L495      AbstractCegarLoop]: Abstraction has 8012 states and 13340 transitions.
[2023-11-29 06:12:56,840 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 667.8571428571429) internal successors, (4675), 7 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:12:56,840 INFO  L276                IsEmpty]: Start isEmpty. Operand 8012 states and 13340 transitions.
[2023-11-29 06:12:56,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5216
[2023-11-29 06:12:56,947 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:12:56,948 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:12:57,006 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-11-29 06:12:57,148 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:57,149 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:12:57,149 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:12:57,150 INFO  L85        PathProgramCache]: Analyzing trace with hash -1709145537, now seen corresponding path program 1 times
[2023-11-29 06:12:57,150 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:12:57,150 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281774338]
[2023-11-29 06:12:57,151 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:57,151 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:12:57,512 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:12:57,512 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392895634]
[2023-11-29 06:12:57,513 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:12:57,513 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:12:57,513 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:12:57,514 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:12:57,514 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-11-29 06:13:02,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:13:02,955 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23180 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:13:03,009 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:13:03,230 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked.
[2023-11-29 06:13:03,230 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:13:03,231 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:13:03,231 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281774338]
[2023-11-29 06:13:03,231 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:13:03,231 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392895634]
[2023-11-29 06:13:03,231 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [392895634] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:13:03,231 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:13:03,232 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:13:03,232 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910823008]
[2023-11-29 06:13:03,232 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:13:03,234 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:13:03,234 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:13:03,236 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:13:03,236 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:13:03,236 INFO  L87              Difference]: Start difference. First operand 8012 states and 13340 transitions. Second operand  has 8 states, 8 states have (on average 584.75) internal successors, (4678), 8 states have internal predecessors, (4678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:03,714 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:13:03,714 INFO  L93              Difference]: Finished difference Result 21839 states and 36360 transitions.
[2023-11-29 06:13:03,714 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:13:03,715 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 584.75) internal successors, (4678), 8 states have internal predecessors, (4678), 0 states have call successors, (0), 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 5215
[2023-11-29 06:13:03,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:13:03,730 INFO  L225             Difference]: With dead ends: 21839
[2023-11-29 06:13:03,731 INFO  L226             Difference]: Without dead ends: 14871
[2023-11-29 06:13:03,736 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5224 GetRequests, 5211 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 06:13:03,737 INFO  L413           NwaCegarLoop]: 13194 mSDtfsCounter, 33162 mSDsluCounter, 64606 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33162 SdHoareTripleChecker+Valid, 77800 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:13:03,737 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33162 Valid, 77800 Invalid, 59 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:13:03,748 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14871 states.
[2023-11-29 06:13:03,816 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14871 to 8014.
[2023-11-29 06:13:03,822 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8014 states, 8013 states have (on average 1.6650443030076125) internal successors, (13342), 8013 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:03,831 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8014 states to 8014 states and 13342 transitions.
[2023-11-29 06:13:03,831 INFO  L78                 Accepts]: Start accepts. Automaton has 8014 states and 13342 transitions. Word has length 5215
[2023-11-29 06:13:03,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:13:03,834 INFO  L495      AbstractCegarLoop]: Abstraction has 8014 states and 13342 transitions.
[2023-11-29 06:13:03,835 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 584.75) internal successors, (4678), 8 states have internal predecessors, (4678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:03,835 INFO  L276                IsEmpty]: Start isEmpty. Operand 8014 states and 13342 transitions.
[2023-11-29 06:13:03,942 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5217
[2023-11-29 06:13:03,942 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:13:03,943 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:13:04,001 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2023-11-29 06:13:04,143 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2023-11-29 06:13:04,144 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:13:04,144 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:13:04,144 INFO  L85        PathProgramCache]: Analyzing trace with hash -1079927235, now seen corresponding path program 1 times
[2023-11-29 06:13:04,144 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:13:04,144 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923568908]
[2023-11-29 06:13:04,145 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:04,145 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:13:04,510 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:13:04,511 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660727075]
[2023-11-29 06:13:04,511 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:04,512 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:04,512 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:13:04,512 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:13:04,513 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-11-29 06:13:09,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:13:09,838 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23183 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:13:09,895 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:13:10,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked.
[2023-11-29 06:13:10,105 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:13:10,105 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:13:10,105 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923568908]
[2023-11-29 06:13:10,105 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:13:10,105 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660727075]
[2023-11-29 06:13:10,105 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660727075] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:13:10,105 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:13:10,107 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:13:10,107 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108067524]
[2023-11-29 06:13:10,107 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:13:10,109 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:13:10,109 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:13:10,111 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:13:10,111 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:13:10,113 INFO  L87              Difference]: Start difference. First operand 8014 states and 13342 transitions. Second operand  has 7 states, 7 states have (on average 668.7142857142857) internal successors, (4681), 7 states have internal predecessors, (4681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:10,547 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:13:10,547 INFO  L93              Difference]: Finished difference Result 21845 states and 36366 transitions.
[2023-11-29 06:13:10,547 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:13:10,548 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 668.7142857142857) internal successors, (4681), 7 states have internal predecessors, (4681), 0 states have call successors, (0), 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 5216
[2023-11-29 06:13:10,551 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:13:10,562 INFO  L225             Difference]: With dead ends: 21845
[2023-11-29 06:13:10,562 INFO  L226             Difference]: Without dead ends: 14872
[2023-11-29 06:13:10,567 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5225 GetRequests, 5213 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:13:10,568 INFO  L413           NwaCegarLoop]: 13189 mSDtfsCounter, 33161 mSDsluCounter, 51400 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33161 SdHoareTripleChecker+Valid, 64589 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:13:10,568 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33161 Valid, 64589 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:13:10,579 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14872 states.
[2023-11-29 06:13:10,646 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14872 to 8016.
[2023-11-29 06:13:10,652 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8016 states, 8015 states have (on average 1.66487835308796) internal successors, (13344), 8015 states have internal predecessors, (13344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:10,661 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 13344 transitions.
[2023-11-29 06:13:10,661 INFO  L78                 Accepts]: Start accepts. Automaton has 8016 states and 13344 transitions. Word has length 5216
[2023-11-29 06:13:10,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:13:10,664 INFO  L495      AbstractCegarLoop]: Abstraction has 8016 states and 13344 transitions.
[2023-11-29 06:13:10,665 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 668.7142857142857) internal successors, (4681), 7 states have internal predecessors, (4681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:10,665 INFO  L276                IsEmpty]: Start isEmpty. Operand 8016 states and 13344 transitions.
[2023-11-29 06:13:10,771 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5218
[2023-11-29 06:13:10,772 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:13:10,772 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:13:10,832 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2023-11-29 06:13:10,973 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:10,973 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:13:10,974 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:13:10,974 INFO  L85        PathProgramCache]: Analyzing trace with hash 871498395, now seen corresponding path program 1 times
[2023-11-29 06:13:10,974 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:13:10,974 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441159667]
[2023-11-29 06:13:10,975 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:10,975 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:13:11,335 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:13:11,335 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947717182]
[2023-11-29 06:13:11,336 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:11,336 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:11,337 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:13:11,337 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:13:11,338 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-11-29 06:13:16,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:13:16,453 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23187 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:13:16,674 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:13:16,900 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked.
[2023-11-29 06:13:16,900 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:13:16,900 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:13:16,900 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441159667]
[2023-11-29 06:13:16,900 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:13:16,900 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947717182]
[2023-11-29 06:13:16,900 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [947717182] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:13:16,900 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:13:16,902 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:13:16,902 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606302363]
[2023-11-29 06:13:16,902 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:13:16,904 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:13:16,905 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:13:16,906 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:13:16,906 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:13:16,907 INFO  L87              Difference]: Start difference. First operand 8016 states and 13344 transitions. Second operand  has 7 states, 7 states have (on average 669.1428571428571) internal successors, (4684), 7 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:17,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:13:17,320 INFO  L93              Difference]: Finished difference Result 21851 states and 36372 transitions.
[2023-11-29 06:13:17,321 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:13:17,322 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 669.1428571428571) internal successors, (4684), 7 states have internal predecessors, (4684), 0 states have call successors, (0), 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 5217
[2023-11-29 06:13:17,325 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:13:17,336 INFO  L225             Difference]: With dead ends: 21851
[2023-11-29 06:13:17,336 INFO  L226             Difference]: Without dead ends: 14873
[2023-11-29 06:13:17,341 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5226 GetRequests, 5214 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:13:17,341 INFO  L413           NwaCegarLoop]: 13184 mSDtfsCounter, 33160 mSDsluCounter, 51385 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33160 SdHoareTripleChecker+Valid, 64569 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:13:17,341 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33160 Valid, 64569 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:13:17,352 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14873 states.
[2023-11-29 06:13:17,419 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14873 to 8018.
[2023-11-29 06:13:17,426 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8018 states, 8017 states have (on average 1.6647124859673195) internal successors, (13346), 8017 states have internal predecessors, (13346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:17,434 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 13346 transitions.
[2023-11-29 06:13:17,434 INFO  L78                 Accepts]: Start accepts. Automaton has 8018 states and 13346 transitions. Word has length 5217
[2023-11-29 06:13:17,437 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:13:17,437 INFO  L495      AbstractCegarLoop]: Abstraction has 8018 states and 13346 transitions.
[2023-11-29 06:13:17,438 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 669.1428571428571) internal successors, (4684), 7 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:17,438 INFO  L276                IsEmpty]: Start isEmpty. Operand 8018 states and 13346 transitions.
[2023-11-29 06:13:17,544 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5219
[2023-11-29 06:13:17,544 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:13:17,545 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:13:17,604 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-11-29 06:13:17,746 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32
[2023-11-29 06:13:17,746 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:13:17,746 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:13:17,747 INFO  L85        PathProgramCache]: Analyzing trace with hash 787110373, now seen corresponding path program 1 times
[2023-11-29 06:13:17,747 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:13:17,747 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670700128]
[2023-11-29 06:13:17,748 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:17,748 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:13:18,110 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:13:18,110 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796061829]
[2023-11-29 06:13:18,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:18,111 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:18,111 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:13:18,112 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:13:18,113 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-11-29 06:13:23,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:13:23,457 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23190 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:13:23,514 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:13:23,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked.
[2023-11-29 06:13:23,741 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:13:23,742 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:13:23,742 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670700128]
[2023-11-29 06:13:23,742 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:13:23,742 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796061829]
[2023-11-29 06:13:23,742 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796061829] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:13:23,742 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:13:23,743 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:13:23,743 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632156242]
[2023-11-29 06:13:23,743 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:13:23,746 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:13:23,746 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:13:23,748 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:13:23,748 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:13:23,749 INFO  L87              Difference]: Start difference. First operand 8018 states and 13346 transitions. Second operand  has 7 states, 7 states have (on average 669.8571428571429) internal successors, (4689), 7 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:24,173 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:13:24,173 INFO  L93              Difference]: Finished difference Result 21860 states and 36383 transitions.
[2023-11-29 06:13:24,174 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:13:24,175 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 669.8571428571429) internal successors, (4689), 7 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5218
[2023-11-29 06:13:24,179 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:13:24,189 INFO  L225             Difference]: With dead ends: 21860
[2023-11-29 06:13:24,189 INFO  L226             Difference]: Without dead ends: 14877
[2023-11-29 06:13:24,195 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5227 GetRequests, 5215 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:13:24,195 INFO  L413           NwaCegarLoop]: 13174 mSDtfsCounter, 33162 mSDsluCounter, 51355 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33162 SdHoareTripleChecker+Valid, 64529 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:13:24,196 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33162 Valid, 64529 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:13:24,207 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14877 states.
[2023-11-29 06:13:24,274 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14877 to 8023.
[2023-11-29 06:13:24,281 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8023 states, 8022 states have (on average 1.6645474943904264) internal successors, (13353), 8022 states have internal predecessors, (13353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:24,289 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8023 states to 8023 states and 13353 transitions.
[2023-11-29 06:13:24,290 INFO  L78                 Accepts]: Start accepts. Automaton has 8023 states and 13353 transitions. Word has length 5218
[2023-11-29 06:13:24,292 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:13:24,292 INFO  L495      AbstractCegarLoop]: Abstraction has 8023 states and 13353 transitions.
[2023-11-29 06:13:24,293 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 669.8571428571429) internal successors, (4689), 7 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:24,293 INFO  L276                IsEmpty]: Start isEmpty. Operand 8023 states and 13353 transitions.
[2023-11-29 06:13:24,399 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5220
[2023-11-29 06:13:24,400 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:13:24,401 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:13:24,459 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2023-11-29 06:13:24,601 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:24,601 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:13:24,602 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:13:24,602 INFO  L85        PathProgramCache]: Analyzing trace with hash -26965873, now seen corresponding path program 1 times
[2023-11-29 06:13:24,602 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:13:24,602 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981333770]
[2023-11-29 06:13:24,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:24,603 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:13:25,045 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:13:25,045 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334702133]
[2023-11-29 06:13:25,046 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:25,046 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:25,046 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:13:25,047 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:13:25,049 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-11-29 06:13:30,190 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:13:30,331 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23193 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:13:30,388 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:13:30,608 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked.
[2023-11-29 06:13:30,608 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:13:30,608 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:13:30,608 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981333770]
[2023-11-29 06:13:30,608 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:13:30,608 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334702133]
[2023-11-29 06:13:30,609 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334702133] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:13:30,609 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:13:30,610 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:13:30,610 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998928795]
[2023-11-29 06:13:30,610 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:13:30,612 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:13:30,612 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:13:30,614 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:13:30,614 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:13:30,615 INFO  L87              Difference]: Start difference. First operand 8023 states and 13353 transitions. Second operand  has 7 states, 7 states have (on average 670.5714285714286) internal successors, (4694), 7 states have internal predecessors, (4694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:31,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:13:31,032 INFO  L93              Difference]: Finished difference Result 21875 states and 36404 transitions.
[2023-11-29 06:13:31,032 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:13:31,033 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 670.5714285714286) internal successors, (4694), 7 states have internal predecessors, (4694), 0 states have call successors, (0), 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 5219
[2023-11-29 06:13:31,037 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:13:31,047 INFO  L225             Difference]: With dead ends: 21875
[2023-11-29 06:13:31,047 INFO  L226             Difference]: Without dead ends: 14881
[2023-11-29 06:13:31,053 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5228 GetRequests, 5216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:13:31,053 INFO  L413           NwaCegarLoop]: 13164 mSDtfsCounter, 33166 mSDsluCounter, 51325 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33166 SdHoareTripleChecker+Valid, 64489 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:13:31,053 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33166 Valid, 64489 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:13:31,064 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14881 states.
[2023-11-29 06:13:31,131 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14881 to 8028.
[2023-11-29 06:13:31,138 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8028 states, 8027 states have (on average 1.6643827083592875) internal successors, (13360), 8027 states have internal predecessors, (13360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:31,146 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8028 states to 8028 states and 13360 transitions.
[2023-11-29 06:13:31,147 INFO  L78                 Accepts]: Start accepts. Automaton has 8028 states and 13360 transitions. Word has length 5219
[2023-11-29 06:13:31,149 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:13:31,149 INFO  L495      AbstractCegarLoop]: Abstraction has 8028 states and 13360 transitions.
[2023-11-29 06:13:31,150 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 670.5714285714286) internal successors, (4694), 7 states have internal predecessors, (4694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:31,150 INFO  L276                IsEmpty]: Start isEmpty. Operand 8028 states and 13360 transitions.
[2023-11-29 06:13:31,257 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5221
[2023-11-29 06:13:31,257 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:13:31,258 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:13:31,316 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2023-11-29 06:13:31,458 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:31,458 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:13:31,459 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:13:31,459 INFO  L85        PathProgramCache]: Analyzing trace with hash 575824625, now seen corresponding path program 1 times
[2023-11-29 06:13:31,460 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:13:31,460 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936495600]
[2023-11-29 06:13:31,460 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:31,460 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:13:31,821 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:13:31,822 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920356821]
[2023-11-29 06:13:31,822 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:31,823 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:31,823 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:13:31,823 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:13:31,824 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-11-29 06:13:36,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:13:37,026 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23196 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:13:37,083 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:13:37,297 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked.
[2023-11-29 06:13:37,297 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:13:37,298 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:13:37,298 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936495600]
[2023-11-29 06:13:37,298 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:13:37,298 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920356821]
[2023-11-29 06:13:37,298 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920356821] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:13:37,298 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:13:37,299 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:13:37,299 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929692208]
[2023-11-29 06:13:37,299 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:13:37,302 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:13:37,302 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:13:37,305 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:13:37,305 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:13:37,306 INFO  L87              Difference]: Start difference. First operand 8028 states and 13360 transitions. Second operand  has 7 states, 7 states have (on average 671.2857142857143) internal successors, (4699), 7 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:37,730 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:13:37,731 INFO  L93              Difference]: Finished difference Result 21890 states and 36425 transitions.
[2023-11-29 06:13:37,731 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:13:37,732 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 671.2857142857143) internal successors, (4699), 7 states have internal predecessors, (4699), 0 states have call successors, (0), 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 5220
[2023-11-29 06:13:37,735 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:13:37,746 INFO  L225             Difference]: With dead ends: 21890
[2023-11-29 06:13:37,746 INFO  L226             Difference]: Without dead ends: 14885
[2023-11-29 06:13:37,751 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5229 GetRequests, 5217 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:13:37,752 INFO  L413           NwaCegarLoop]: 13154 mSDtfsCounter, 33170 mSDsluCounter, 51295 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33170 SdHoareTripleChecker+Valid, 64449 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:13:37,752 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33170 Valid, 64449 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:13:37,763 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14885 states.
[2023-11-29 06:13:37,830 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14885 to 8033.
[2023-11-29 06:13:37,836 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8033 states, 8032 states have (on average 1.6642181274900398) internal successors, (13367), 8032 states have internal predecessors, (13367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:37,845 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8033 states to 8033 states and 13367 transitions.
[2023-11-29 06:13:37,845 INFO  L78                 Accepts]: Start accepts. Automaton has 8033 states and 13367 transitions. Word has length 5220
[2023-11-29 06:13:37,848 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:13:37,848 INFO  L495      AbstractCegarLoop]: Abstraction has 8033 states and 13367 transitions.
[2023-11-29 06:13:37,849 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 671.2857142857143) internal successors, (4699), 7 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:37,849 INFO  L276                IsEmpty]: Start isEmpty. Operand 8033 states and 13367 transitions.
[2023-11-29 06:13:37,955 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5222
[2023-11-29 06:13:37,956 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:13:37,956 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:13:38,015 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2023-11-29 06:13:38,157 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2023-11-29 06:13:38,157 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:13:38,158 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:13:38,158 INFO  L85        PathProgramCache]: Analyzing trace with hash 545398915, now seen corresponding path program 1 times
[2023-11-29 06:13:38,158 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:13:38,158 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844455217]
[2023-11-29 06:13:38,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:38,159 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:13:38,617 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:13:38,617 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371836806]
[2023-11-29 06:13:38,618 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:38,618 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:38,618 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:13:38,619 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:13:38,620 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-11-29 06:13:43,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:13:43,700 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23199 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:13:43,757 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:13:43,970 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked.
[2023-11-29 06:13:43,970 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:13:43,970 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:13:43,970 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844455217]
[2023-11-29 06:13:43,970 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:13:43,970 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371836806]
[2023-11-29 06:13:43,970 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371836806] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:13:43,970 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:13:43,971 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:13:43,971 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221065994]
[2023-11-29 06:13:43,971 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:13:43,973 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:13:43,974 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:13:43,975 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:13:43,975 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:13:43,976 INFO  L87              Difference]: Start difference. First operand 8033 states and 13367 transitions. Second operand  has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:44,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:13:44,401 INFO  L93              Difference]: Finished difference Result 21905 states and 36446 transitions.
[2023-11-29 06:13:44,401 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:13:44,402 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5221
[2023-11-29 06:13:44,406 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:13:44,417 INFO  L225             Difference]: With dead ends: 21905
[2023-11-29 06:13:44,417 INFO  L226             Difference]: Without dead ends: 14889
[2023-11-29 06:13:44,423 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5230 GetRequests, 5218 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:13:44,423 INFO  L413           NwaCegarLoop]: 13144 mSDtfsCounter, 33174 mSDsluCounter, 51265 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33174 SdHoareTripleChecker+Valid, 64409 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:13:44,423 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33174 Valid, 64409 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:13:44,434 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14889 states.
[2023-11-29 06:13:44,502 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14889 to 8038.
[2023-11-29 06:13:44,509 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8038 states, 8037 states have (on average 1.664053751399776) internal successors, (13374), 8037 states have internal predecessors, (13374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:44,517 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8038 states to 8038 states and 13374 transitions.
[2023-11-29 06:13:44,518 INFO  L78                 Accepts]: Start accepts. Automaton has 8038 states and 13374 transitions. Word has length 5221
[2023-11-29 06:13:44,520 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:13:44,520 INFO  L495      AbstractCegarLoop]: Abstraction has 8038 states and 13374 transitions.
[2023-11-29 06:13:44,521 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:44,521 INFO  L276                IsEmpty]: Start isEmpty. Operand 8038 states and 13374 transitions.
[2023-11-29 06:13:44,628 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5223
[2023-11-29 06:13:44,628 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:13:44,629 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:13:44,688 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0
[2023-11-29 06:13:44,830 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2023-11-29 06:13:44,830 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:13:44,830 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:13:44,831 INFO  L85        PathProgramCache]: Analyzing trace with hash -540608003, now seen corresponding path program 1 times
[2023-11-29 06:13:44,831 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:13:44,831 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238939394]
[2023-11-29 06:13:44,832 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:44,832 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:13:45,192 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:13:45,192 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252551174]
[2023-11-29 06:13:45,193 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:45,193 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:45,193 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:13:45,193 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:13:45,194 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-11-29 06:13:50,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:13:50,205 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23202 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:13:50,262 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:13:50,486 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked.
[2023-11-29 06:13:50,486 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:13:50,486 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:13:50,487 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238939394]
[2023-11-29 06:13:50,487 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:13:50,487 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252551174]
[2023-11-29 06:13:50,487 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252551174] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:13:50,487 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:13:50,488 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:13:50,488 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092121951]
[2023-11-29 06:13:50,488 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:13:50,491 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:13:50,491 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:13:50,493 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:13:50,493 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:13:50,494 INFO  L87              Difference]: Start difference. First operand 8038 states and 13374 transitions. Second operand  has 7 states, 7 states have (on average 672.7142857142857) internal successors, (4709), 7 states have internal predecessors, (4709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:50,917 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:13:50,917 INFO  L93              Difference]: Finished difference Result 21920 states and 36467 transitions.
[2023-11-29 06:13:50,918 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:13:50,919 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 672.7142857142857) internal successors, (4709), 7 states have internal predecessors, (4709), 0 states have call successors, (0), 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 5222
[2023-11-29 06:13:50,922 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:13:50,933 INFO  L225             Difference]: With dead ends: 21920
[2023-11-29 06:13:50,933 INFO  L226             Difference]: Without dead ends: 14893
[2023-11-29 06:13:50,938 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5231 GetRequests, 5219 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:13:50,939 INFO  L413           NwaCegarLoop]: 13134 mSDtfsCounter, 33178 mSDsluCounter, 51235 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33178 SdHoareTripleChecker+Valid, 64369 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:13:50,939 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33178 Valid, 64369 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:13:50,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14893 states.
[2023-11-29 06:13:51,017 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14893 to 8043.
[2023-11-29 06:13:51,024 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8043 states, 8042 states have (on average 1.6638895797065407) internal successors, (13381), 8042 states have internal predecessors, (13381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:51,032 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8043 states to 8043 states and 13381 transitions.
[2023-11-29 06:13:51,032 INFO  L78                 Accepts]: Start accepts. Automaton has 8043 states and 13381 transitions. Word has length 5222
[2023-11-29 06:13:51,035 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:13:51,035 INFO  L495      AbstractCegarLoop]: Abstraction has 8043 states and 13381 transitions.
[2023-11-29 06:13:51,036 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 672.7142857142857) internal successors, (4709), 7 states have internal predecessors, (4709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:51,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 8043 states and 13381 transitions.
[2023-11-29 06:13:51,143 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5224
[2023-11-29 06:13:51,143 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:13:51,144 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:13:51,203 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2023-11-29 06:13:51,345 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:51,345 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:13:51,346 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:13:51,346 INFO  L85        PathProgramCache]: Analyzing trace with hash -869561737, now seen corresponding path program 1 times
[2023-11-29 06:13:51,346 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:13:51,346 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534886919]
[2023-11-29 06:13:51,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:51,347 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:13:51,710 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:13:51,710 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983125408]
[2023-11-29 06:13:51,712 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:51,712 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:51,712 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:13:51,713 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:13:51,714 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-11-29 06:13:57,046 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:13:57,187 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23205 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:13:57,244 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:13:57,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked.
[2023-11-29 06:13:57,459 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:13:57,459 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:13:57,459 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534886919]
[2023-11-29 06:13:57,459 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:13:57,459 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983125408]
[2023-11-29 06:13:57,459 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [983125408] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:13:57,459 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:13:57,460 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:13:57,460 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409518076]
[2023-11-29 06:13:57,460 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:13:57,462 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:13:57,462 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:13:57,464 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:13:57,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:13:57,465 INFO  L87              Difference]: Start difference. First operand 8043 states and 13381 transitions. Second operand  has 7 states, 7 states have (on average 673.4285714285714) internal successors, (4714), 7 states have internal predecessors, (4714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:57,887 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:13:57,887 INFO  L93              Difference]: Finished difference Result 21935 states and 36488 transitions.
[2023-11-29 06:13:57,887 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:13:57,888 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 673.4285714285714) internal successors, (4714), 7 states have internal predecessors, (4714), 0 states have call successors, (0), 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 5223
[2023-11-29 06:13:57,891 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:13:57,902 INFO  L225             Difference]: With dead ends: 21935
[2023-11-29 06:13:57,902 INFO  L226             Difference]: Without dead ends: 14897
[2023-11-29 06:13:57,907 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5232 GetRequests, 5220 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:13:57,908 INFO  L413           NwaCegarLoop]: 13124 mSDtfsCounter, 33182 mSDsluCounter, 51205 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33182 SdHoareTripleChecker+Valid, 64329 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:13:57,908 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33182 Valid, 64329 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:13:57,920 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14897 states.
[2023-11-29 06:13:57,988 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14897 to 8048.
[2023-11-29 06:13:57,994 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8048 states, 8047 states have (on average 1.6637256120293278) internal successors, (13388), 8047 states have internal predecessors, (13388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:58,003 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8048 states to 8048 states and 13388 transitions.
[2023-11-29 06:13:58,003 INFO  L78                 Accepts]: Start accepts. Automaton has 8048 states and 13388 transitions. Word has length 5223
[2023-11-29 06:13:58,006 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:13:58,006 INFO  L495      AbstractCegarLoop]: Abstraction has 8048 states and 13388 transitions.
[2023-11-29 06:13:58,007 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 673.4285714285714) internal successors, (4714), 7 states have internal predecessors, (4714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:13:58,007 INFO  L276                IsEmpty]: Start isEmpty. Operand 8048 states and 13388 transitions.
[2023-11-29 06:13:58,114 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5225
[2023-11-29 06:13:58,115 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:13:58,115 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:13:58,174 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0
[2023-11-29 06:13:58,316 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2023-11-29 06:13:58,316 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:13:58,316 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:13:58,317 INFO  L85        PathProgramCache]: Analyzing trace with hash -1907925239, now seen corresponding path program 1 times
[2023-11-29 06:13:58,317 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:13:58,317 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443364101]
[2023-11-29 06:13:58,317 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:58,318 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:13:58,682 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:13:58,682 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45620713]
[2023-11-29 06:13:58,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:13:58,683 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:13:58,683 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:13:58,684 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:13:58,685 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-11-29 06:14:03,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:14:03,887 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23208 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:14:03,944 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:14:04,162 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked.
[2023-11-29 06:14:04,163 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:14:04,163 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:14:04,163 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443364101]
[2023-11-29 06:14:04,163 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:14:04,163 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45620713]
[2023-11-29 06:14:04,163 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [45620713] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:14:04,163 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:14:04,164 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:14:04,165 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677308459]
[2023-11-29 06:14:04,165 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:14:04,167 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:14:04,167 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:14:04,169 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:14:04,169 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:14:04,170 INFO  L87              Difference]: Start difference. First operand 8048 states and 13388 transitions. Second operand  has 7 states, 7 states have (on average 674.1428571428571) internal successors, (4719), 7 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:14:04,594 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:14:04,594 INFO  L93              Difference]: Finished difference Result 21950 states and 36509 transitions.
[2023-11-29 06:14:04,594 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:14:04,595 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.1428571428571) internal successors, (4719), 7 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5224
[2023-11-29 06:14:04,598 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:14:04,609 INFO  L225             Difference]: With dead ends: 21950
[2023-11-29 06:14:04,609 INFO  L226             Difference]: Without dead ends: 14901
[2023-11-29 06:14:04,614 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5233 GetRequests, 5221 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:14:04,615 INFO  L413           NwaCegarLoop]: 13114 mSDtfsCounter, 33186 mSDsluCounter, 51175 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33186 SdHoareTripleChecker+Valid, 64289 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:14:04,615 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33186 Valid, 64289 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:14:04,626 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14901 states.
[2023-11-29 06:14:04,693 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14901 to 8053.
[2023-11-29 06:14:04,700 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8053 states, 8052 states have (on average 1.6635618479880776) internal successors, (13395), 8052 states have internal predecessors, (13395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:14:04,708 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 13395 transitions.
[2023-11-29 06:14:04,708 INFO  L78                 Accepts]: Start accepts. Automaton has 8053 states and 13395 transitions. Word has length 5224
[2023-11-29 06:14:04,711 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:14:04,711 INFO  L495      AbstractCegarLoop]: Abstraction has 8053 states and 13395 transitions.
[2023-11-29 06:14:04,712 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.1428571428571) internal successors, (4719), 7 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:14:04,712 INFO  L276                IsEmpty]: Start isEmpty. Operand 8053 states and 13395 transitions.
[2023-11-29 06:14:04,819 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5226
[2023-11-29 06:14:04,819 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:14:04,820 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:14:04,879 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2023-11-29 06:14:05,020 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-11-29 06:14:05,021 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:14:05,021 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:14:05,022 INFO  L85        PathProgramCache]: Analyzing trace with hash 1518437995, now seen corresponding path program 1 times
[2023-11-29 06:14:05,022 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:14:05,022 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634757822]
[2023-11-29 06:14:05,022 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:14:05,022 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:14:05,382 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:14:05,382 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743447677]
[2023-11-29 06:14:05,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:14:05,383 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:14:05,383 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:14:05,384 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:14:05,385 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-11-29 06:14:10,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:14:10,843 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23211 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:14:10,899 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:14:11,125 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked.
[2023-11-29 06:14:11,125 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:14:11,125 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:14:11,125 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634757822]
[2023-11-29 06:14:11,125 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:14:11,125 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743447677]
[2023-11-29 06:14:11,125 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743447677] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:14:11,126 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:14:11,126 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:14:11,126 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568742717]
[2023-11-29 06:14:11,126 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:14:11,128 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:14:11,129 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:14:11,130 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:14:11,130 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:14:11,131 INFO  L87              Difference]: Start difference. First operand 8053 states and 13395 transitions. Second operand  has 7 states, 7 states have (on average 674.8571428571429) internal successors, (4724), 7 states have internal predecessors, (4724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:14:11,560 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:14:11,560 INFO  L93              Difference]: Finished difference Result 21965 states and 36530 transitions.
[2023-11-29 06:14:11,561 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:14:11,562 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.8571428571429) internal successors, (4724), 7 states have internal predecessors, (4724), 0 states have call successors, (0), 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 5225
[2023-11-29 06:14:11,565 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:14:11,576 INFO  L225             Difference]: With dead ends: 21965
[2023-11-29 06:14:11,576 INFO  L226             Difference]: Without dead ends: 14905
[2023-11-29 06:14:11,581 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5234 GetRequests, 5222 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:14:11,582 INFO  L413           NwaCegarLoop]: 13104 mSDtfsCounter, 33190 mSDsluCounter, 51145 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33190 SdHoareTripleChecker+Valid, 64249 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:14:11,582 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33190 Valid, 64249 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:14:11,593 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14905 states.
[2023-11-29 06:14:11,660 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14905 to 8058.
[2023-11-29 06:14:11,667 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8058 states, 8057 states have (on average 1.6633982872036739) internal successors, (13402), 8057 states have internal predecessors, (13402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:14:11,675 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8058 states to 8058 states and 13402 transitions.
[2023-11-29 06:14:11,676 INFO  L78                 Accepts]: Start accepts. Automaton has 8058 states and 13402 transitions. Word has length 5225
[2023-11-29 06:14:11,678 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:14:11,678 INFO  L495      AbstractCegarLoop]: Abstraction has 8058 states and 13402 transitions.
[2023-11-29 06:14:11,679 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.8571428571429) internal successors, (4724), 7 states have internal predecessors, (4724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:14:11,679 INFO  L276                IsEmpty]: Start isEmpty. Operand 8058 states and 13402 transitions.
[2023-11-29 06:14:11,786 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5227
[2023-11-29 06:14:11,786 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:14:11,787 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:14:11,846 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0
[2023-11-29 06:14:11,988 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40
[2023-11-29 06:14:11,988 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:14:11,988 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:14:11,989 INFO  L85        PathProgramCache]: Analyzing trace with hash -1148005867, now seen corresponding path program 1 times
[2023-11-29 06:14:11,989 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:14:11,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878747187]
[2023-11-29 06:14:11,989 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:14:11,989 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:14:12,360 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:14:12,360 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863981670]
[2023-11-29 06:14:12,361 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:14:12,361 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:14:12,361 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:14:12,362 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:14:12,363 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-11-29 06:14:17,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:14:17,547 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23214 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:14:17,609 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:14:17,841 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked.
[2023-11-29 06:14:17,841 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:14:17,841 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:14:17,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878747187]
[2023-11-29 06:14:17,841 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:14:17,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863981670]
[2023-11-29 06:14:17,841 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [863981670] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:14:17,842 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:14:17,843 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:14:17,843 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669162923]
[2023-11-29 06:14:17,843 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:14:17,846 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:14:17,846 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:14:17,848 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:14:17,848 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:14:17,849 INFO  L87              Difference]: Start difference. First operand 8058 states and 13402 transitions. Second operand  has 7 states, 7 states have (on average 675.5714285714286) internal successors, (4729), 7 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:14:18,267 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:14:18,267 INFO  L93              Difference]: Finished difference Result 21980 states and 36551 transitions.
[2023-11-29 06:14:18,267 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:14:18,268 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.5714285714286) internal successors, (4729), 7 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5226
[2023-11-29 06:14:18,272 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:14:18,282 INFO  L225             Difference]: With dead ends: 21980
[2023-11-29 06:14:18,283 INFO  L226             Difference]: Without dead ends: 14909
[2023-11-29 06:14:18,288 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5235 GetRequests, 5223 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:14:18,288 INFO  L413           NwaCegarLoop]: 13094 mSDtfsCounter, 33194 mSDsluCounter, 51115 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33194 SdHoareTripleChecker+Valid, 64209 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:14:18,289 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33194 Valid, 64209 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:14:18,299 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14909 states.
[2023-11-29 06:14:18,367 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14909 to 8063.
[2023-11-29 06:14:18,374 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8063 states, 8062 states have (on average 1.663234929297941) internal successors, (13409), 8062 states have internal predecessors, (13409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:14:18,383 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8063 states to 8063 states and 13409 transitions.
[2023-11-29 06:14:18,383 INFO  L78                 Accepts]: Start accepts. Automaton has 8063 states and 13409 transitions. Word has length 5226
[2023-11-29 06:14:18,385 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:14:18,385 INFO  L495      AbstractCegarLoop]: Abstraction has 8063 states and 13409 transitions.
[2023-11-29 06:14:18,386 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.5714285714286) internal successors, (4729), 7 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:14:18,386 INFO  L276                IsEmpty]: Start isEmpty. Operand 8063 states and 13409 transitions.
[2023-11-29 06:14:18,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5228
[2023-11-29 06:14:18,493 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:14:18,494 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:14:18,553 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2023-11-29 06:14:18,695 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:14:18,695 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:14:18,695 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:14:18,696 INFO  L85        PathProgramCache]: Analyzing trace with hash -1343957921, now seen corresponding path program 1 times
[2023-11-29 06:14:18,696 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:14:18,696 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916471372]
[2023-11-29 06:14:18,696 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:14:18,696 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:14:19,227 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:14:19,228 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471995959]
[2023-11-29 06:14:19,228 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:14:19,229 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:14:19,229 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:14:19,229 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:14:19,230 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-11-29 06:14:24,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:14:24,442 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23217 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:14:24,499 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:14:24,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked.
[2023-11-29 06:14:24,722 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:14:24,722 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:14:24,722 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916471372]
[2023-11-29 06:14:24,722 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:14:24,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471995959]
[2023-11-29 06:14:24,723 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471995959] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:14:24,723 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:14:24,724 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:14:24,724 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912413517]
[2023-11-29 06:14:24,724 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:14:24,727 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:14:24,727 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL



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



[2023-11-29 06:17:57,253 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0
[2023-11-29 06:17:57,395 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:17:57,396 INFO  L420      AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:17:57,396 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:17:57,397 INFO  L85        PathProgramCache]: Analyzing trace with hash -1568674543, now seen corresponding path program 1 times
[2023-11-29 06:17:57,397 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:17:57,397 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605243911]
[2023-11-29 06:17:57,397 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:17:57,397 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:17:57,763 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:17:57,763 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849279194]
[2023-11-29 06:17:57,764 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:17:57,764 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:17:57,764 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:17:57,765 INFO  L229       MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:17:57,765 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process
[2023-11-29 06:18:02,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:18:02,857 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23320 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:18:02,912 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:18:03,127 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked.
[2023-11-29 06:18:03,127 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:18:03,127 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:18:03,127 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605243911]
[2023-11-29 06:18:03,127 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:18:03,127 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849279194]
[2023-11-29 06:18:03,127 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849279194] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:18:03,127 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:18:03,128 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:18:03,128 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724467609]
[2023-11-29 06:18:03,128 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:18:03,130 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:18:03,130 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:18:03,132 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:18:03,132 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:18:03,133 INFO  L87              Difference]: Start difference. First operand 8217 states and 13623 transitions. Second operand  has 7 states, 7 states have (on average 698.2857142857143) internal successors, (4888), 7 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:03,747 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:18:03,747 INFO  L93              Difference]: Finished difference Result 22454 states and 37209 transitions.
[2023-11-29 06:18:03,747 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:18:03,748 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 698.2857142857143) internal successors, (4888), 7 states have internal predecessors, (4888), 0 states have call successors, (0), 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 5259
[2023-11-29 06:18:03,751 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:18:03,759 INFO  L225             Difference]: With dead ends: 22454
[2023-11-29 06:18:03,759 INFO  L226             Difference]: Without dead ends: 15032
[2023-11-29 06:18:03,761 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5268 GetRequests, 5256 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:18:03,762 INFO  L413           NwaCegarLoop]: 12779 mSDtfsCounter, 33313 mSDsluCounter, 50170 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33313 SdHoareTripleChecker+Valid, 62949 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:18:03,762 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33313 Valid, 62949 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:18:03,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15032 states.
[2023-11-29 06:18:03,830 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15032 to 8219.
[2023-11-29 06:18:03,837 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8219 states, 8218 states have (on average 1.6579459722560235) internal successors, (13625), 8218 states have internal predecessors, (13625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:03,845 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8219 states to 8219 states and 13625 transitions.
[2023-11-29 06:18:03,845 INFO  L78                 Accepts]: Start accepts. Automaton has 8219 states and 13625 transitions. Word has length 5259
[2023-11-29 06:18:03,847 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:18:03,847 INFO  L495      AbstractCegarLoop]: Abstraction has 8219 states and 13625 transitions.
[2023-11-29 06:18:03,848 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 698.2857142857143) internal successors, (4888), 7 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:03,848 INFO  L276                IsEmpty]: Start isEmpty. Operand 8219 states and 13625 transitions.
[2023-11-29 06:18:03,956 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5261
[2023-11-29 06:18:03,956 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:18:03,957 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:18:04,016 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0
[2023-11-29 06:18:04,157 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:04,158 INFO  L420      AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:18:04,158 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:18:04,159 INFO  L85        PathProgramCache]: Analyzing trace with hash 1069660001, now seen corresponding path program 1 times
[2023-11-29 06:18:04,159 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:18:04,159 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577716916]
[2023-11-29 06:18:04,161 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:04,161 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:18:04,522 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:18:04,522 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411884572]
[2023-11-29 06:18:04,523 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:04,523 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:04,524 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:18:04,524 INFO  L229       MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:18:04,525 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process
[2023-11-29 06:18:09,940 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:18:10,075 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23323 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:18:10,150 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:18:10,367 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked.
[2023-11-29 06:18:10,367 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:18:10,367 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:18:10,367 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577716916]
[2023-11-29 06:18:10,368 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:18:10,368 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411884572]
[2023-11-29 06:18:10,368 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [411884572] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:18:10,368 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:18:10,369 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:18:10,369 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803430502]
[2023-11-29 06:18:10,369 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:18:10,371 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:18:10,371 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:18:10,372 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:18:10,373 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:18:10,373 INFO  L87              Difference]: Start difference. First operand 8219 states and 13625 transitions. Second operand  has 7 states, 7 states have (on average 699.0) internal successors, (4893), 7 states have internal predecessors, (4893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:10,778 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:18:10,778 INFO  L93              Difference]: Finished difference Result 22463 states and 37220 transitions.
[2023-11-29 06:18:10,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:18:10,780 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 699.0) internal successors, (4893), 7 states have internal predecessors, (4893), 0 states have call successors, (0), 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 5260
[2023-11-29 06:18:10,784 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:18:10,795 INFO  L225             Difference]: With dead ends: 22463
[2023-11-29 06:18:10,795 INFO  L226             Difference]: Without dead ends: 15036
[2023-11-29 06:18:10,800 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5269 GetRequests, 5257 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:18:10,801 INFO  L413           NwaCegarLoop]: 12769 mSDtfsCounter, 33315 mSDsluCounter, 50140 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33315 SdHoareTripleChecker+Valid, 62909 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:18:10,801 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33315 Valid, 62909 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:18:10,811 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15036 states.
[2023-11-29 06:18:10,880 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15036 to 8224.
[2023-11-29 06:18:10,887 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8224 states, 8223 states have (on average 1.6577891280554542) internal successors, (13632), 8223 states have internal predecessors, (13632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:10,896 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8224 states to 8224 states and 13632 transitions.
[2023-11-29 06:18:10,896 INFO  L78                 Accepts]: Start accepts. Automaton has 8224 states and 13632 transitions. Word has length 5260
[2023-11-29 06:18:10,898 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:18:10,898 INFO  L495      AbstractCegarLoop]: Abstraction has 8224 states and 13632 transitions.
[2023-11-29 06:18:10,899 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 699.0) internal successors, (4893), 7 states have internal predecessors, (4893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:10,899 INFO  L276                IsEmpty]: Start isEmpty. Operand 8224 states and 13632 transitions.
[2023-11-29 06:18:11,013 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5262
[2023-11-29 06:18:11,013 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:18:11,015 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:18:11,073 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0
[2023-11-29 06:18:11,215 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:11,216 INFO  L420      AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:18:11,216 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:18:11,217 INFO  L85        PathProgramCache]: Analyzing trace with hash -2024310713, now seen corresponding path program 1 times
[2023-11-29 06:18:11,217 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:18:11,217 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095821629]
[2023-11-29 06:18:11,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:11,218 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:18:11,580 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:18:11,580 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208394105]
[2023-11-29 06:18:11,581 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:11,581 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:11,581 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:18:11,582 INFO  L229       MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:18:11,583 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process
[2023-11-29 06:18:16,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:18:16,807 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23327 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:18:16,865 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:18:17,092 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked.
[2023-11-29 06:18:17,092 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:18:17,092 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:18:17,092 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095821629]
[2023-11-29 06:18:17,092 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:18:17,093 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208394105]
[2023-11-29 06:18:17,093 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208394105] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:18:17,093 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:18:17,094 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:18:17,094 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650829360]
[2023-11-29 06:18:17,094 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:18:17,097 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:18:17,097 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:18:17,099 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:18:17,100 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:18:17,100 INFO  L87              Difference]: Start difference. First operand 8224 states and 13632 transitions. Second operand  has 7 states, 7 states have (on average 699.7142857142857) internal successors, (4898), 7 states have internal predecessors, (4898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:17,522 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:18:17,522 INFO  L93              Difference]: Finished difference Result 22478 states and 37241 transitions.
[2023-11-29 06:18:17,522 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:18:17,523 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 699.7142857142857) internal successors, (4898), 7 states have internal predecessors, (4898), 0 states have call successors, (0), 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 5261
[2023-11-29 06:18:17,526 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:18:17,537 INFO  L225             Difference]: With dead ends: 22478
[2023-11-29 06:18:17,537 INFO  L226             Difference]: Without dead ends: 15040
[2023-11-29 06:18:17,543 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5270 GetRequests, 5258 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:18:17,543 INFO  L413           NwaCegarLoop]: 12759 mSDtfsCounter, 33319 mSDsluCounter, 50110 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33319 SdHoareTripleChecker+Valid, 62869 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:18:17,543 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33319 Valid, 62869 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:18:17,554 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15040 states.
[2023-11-29 06:18:17,628 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15040 to 8229.
[2023-11-29 06:18:17,635 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8229 states, 8228 states have (on average 1.6576324744773943) internal successors, (13639), 8228 states have internal predecessors, (13639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:17,643 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8229 states to 8229 states and 13639 transitions.
[2023-11-29 06:18:17,644 INFO  L78                 Accepts]: Start accepts. Automaton has 8229 states and 13639 transitions. Word has length 5261
[2023-11-29 06:18:17,646 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:18:17,646 INFO  L495      AbstractCegarLoop]: Abstraction has 8229 states and 13639 transitions.
[2023-11-29 06:18:17,647 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 699.7142857142857) internal successors, (4898), 7 states have internal predecessors, (4898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:17,647 INFO  L276                IsEmpty]: Start isEmpty. Operand 8229 states and 13639 transitions.
[2023-11-29 06:18:17,755 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5263
[2023-11-29 06:18:17,756 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:18:17,756 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:18:17,815 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0
[2023-11-29 06:18:17,957 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:17,957 INFO  L420      AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:18:17,957 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:18:17,958 INFO  L85        PathProgramCache]: Analyzing trace with hash -157009873, now seen corresponding path program 1 times
[2023-11-29 06:18:17,958 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:18:17,958 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639251779]
[2023-11-29 06:18:17,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:17,959 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:18:18,322 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:18:18,322 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067802237]
[2023-11-29 06:18:18,323 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:18,323 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:18,323 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:18:18,324 INFO  L229       MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:18:18,324 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process
[2023-11-29 06:18:23,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:18:23,743 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23330 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:18:23,798 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:18:24,013 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked.
[2023-11-29 06:18:24,014 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:18:24,014 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:18:24,014 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639251779]
[2023-11-29 06:18:24,014 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:18:24,014 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067802237]
[2023-11-29 06:18:24,014 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067802237] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:18:24,014 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:18:24,015 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:18:24,016 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088911173]
[2023-11-29 06:18:24,016 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:18:24,018 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:18:24,018 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:18:24,020 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:18:24,020 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:18:24,021 INFO  L87              Difference]: Start difference. First operand 8229 states and 13639 transitions. Second operand  has 7 states, 7 states have (on average 700.4285714285714) internal successors, (4903), 7 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:24,433 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:18:24,433 INFO  L93              Difference]: Finished difference Result 22493 states and 37262 transitions.
[2023-11-29 06:18:24,433 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:18:24,434 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 700.4285714285714) internal successors, (4903), 7 states have internal predecessors, (4903), 0 states have call successors, (0), 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 5262
[2023-11-29 06:18:24,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:18:24,449 INFO  L225             Difference]: With dead ends: 22493
[2023-11-29 06:18:24,449 INFO  L226             Difference]: Without dead ends: 15044
[2023-11-29 06:18:24,454 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5271 GetRequests, 5259 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:18:24,454 INFO  L413           NwaCegarLoop]: 12749 mSDtfsCounter, 33323 mSDsluCounter, 50080 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33323 SdHoareTripleChecker+Valid, 62829 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:18:24,454 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33323 Valid, 62829 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:18:24,465 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15044 states.
[2023-11-29 06:18:24,533 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15044 to 8234.
[2023-11-29 06:18:24,540 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8234 states, 8233 states have (on average 1.6574760111745415) internal successors, (13646), 8233 states have internal predecessors, (13646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:24,549 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8234 states to 8234 states and 13646 transitions.
[2023-11-29 06:18:24,549 INFO  L78                 Accepts]: Start accepts. Automaton has 8234 states and 13646 transitions. Word has length 5262
[2023-11-29 06:18:24,551 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:18:24,551 INFO  L495      AbstractCegarLoop]: Abstraction has 8234 states and 13646 transitions.
[2023-11-29 06:18:24,552 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 700.4285714285714) internal successors, (4903), 7 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:24,552 INFO  L276                IsEmpty]: Start isEmpty. Operand 8234 states and 13646 transitions.
[2023-11-29 06:18:24,661 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5264
[2023-11-29 06:18:24,661 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:18:24,662 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:18:24,721 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0
[2023-11-29 06:18:24,862 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:24,862 INFO  L420      AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:18:24,863 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:18:24,864 INFO  L85        PathProgramCache]: Analyzing trace with hash 2041457405, now seen corresponding path program 1 times
[2023-11-29 06:18:24,864 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:18:24,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338422019]
[2023-11-29 06:18:24,865 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:24,865 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:18:25,227 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:18:25,227 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894756454]
[2023-11-29 06:18:25,228 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:25,228 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:25,229 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:18:25,229 INFO  L229       MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:18:25,230 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process
[2023-11-29 06:18:30,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:18:30,514 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23334 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:18:30,571 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:18:30,781 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked.
[2023-11-29 06:18:30,781 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:18:30,781 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:18:30,781 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338422019]
[2023-11-29 06:18:30,781 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:18:30,781 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894756454]
[2023-11-29 06:18:30,782 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894756454] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:18:30,782 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:18:30,783 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:18:30,783 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144365322]
[2023-11-29 06:18:30,783 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:18:30,786 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:18:30,786 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:18:30,788 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:18:30,788 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:18:30,789 INFO  L87              Difference]: Start difference. First operand 8234 states and 13646 transitions. Second operand  has 7 states, 7 states have (on average 701.1428571428571) internal successors, (4908), 7 states have internal predecessors, (4908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:31,200 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:18:31,200 INFO  L93              Difference]: Finished difference Result 22508 states and 37283 transitions.
[2023-11-29 06:18:31,201 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:18:31,202 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 701.1428571428571) internal successors, (4908), 7 states have internal predecessors, (4908), 0 states have call successors, (0), 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 5263
[2023-11-29 06:18:31,205 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:18:31,216 INFO  L225             Difference]: With dead ends: 22508
[2023-11-29 06:18:31,216 INFO  L226             Difference]: Without dead ends: 15048
[2023-11-29 06:18:31,222 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5272 GetRequests, 5260 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:18:31,222 INFO  L413           NwaCegarLoop]: 12739 mSDtfsCounter, 33327 mSDsluCounter, 50050 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33327 SdHoareTripleChecker+Valid, 62789 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:18:31,222 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33327 Valid, 62789 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:18:31,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15048 states.
[2023-11-29 06:18:31,302 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15048 to 8239.
[2023-11-29 06:18:31,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8239 states, 8238 states have (on average 1.657319737800437) internal successors, (13653), 8238 states have internal predecessors, (13653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:31,317 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8239 states to 8239 states and 13653 transitions.
[2023-11-29 06:18:31,317 INFO  L78                 Accepts]: Start accepts. Automaton has 8239 states and 13653 transitions. Word has length 5263
[2023-11-29 06:18:31,320 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:18:31,320 INFO  L495      AbstractCegarLoop]: Abstraction has 8239 states and 13653 transitions.
[2023-11-29 06:18:31,321 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 701.1428571428571) internal successors, (4908), 7 states have internal predecessors, (4908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:31,321 INFO  L276                IsEmpty]: Start isEmpty. Operand 8239 states and 13653 transitions.
[2023-11-29 06:18:31,429 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5265
[2023-11-29 06:18:31,429 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:18:31,430 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:18:31,488 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0
[2023-11-29 06:18:31,631 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:31,631 INFO  L420      AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:18:31,631 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:18:31,632 INFO  L85        PathProgramCache]: Analyzing trace with hash -371082115, now seen corresponding path program 1 times
[2023-11-29 06:18:31,632 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:18:31,632 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178906668]
[2023-11-29 06:18:31,632 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:31,632 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:18:32,065 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:18:32,065 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292483536]
[2023-11-29 06:18:32,066 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:32,066 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:32,066 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:18:32,067 INFO  L229       MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:18:32,067 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process
[2023-11-29 06:18:37,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:18:37,216 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23337 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:18:37,273 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:18:37,502 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked.
[2023-11-29 06:18:37,503 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:18:37,503 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:18:37,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178906668]
[2023-11-29 06:18:37,503 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:18:37,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292483536]
[2023-11-29 06:18:37,503 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292483536] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:18:37,503 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:18:37,504 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:18:37,505 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376527407]
[2023-11-29 06:18:37,505 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:18:37,507 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:18:37,507 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:18:37,510 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:18:37,510 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:18:37,511 INFO  L87              Difference]: Start difference. First operand 8239 states and 13653 transitions. Second operand  has 7 states, 7 states have (on average 701.8571428571429) internal successors, (4913), 7 states have internal predecessors, (4913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:37,933 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:18:37,933 INFO  L93              Difference]: Finished difference Result 22523 states and 37304 transitions.
[2023-11-29 06:18:37,934 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:18:37,935 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 701.8571428571429) internal successors, (4913), 7 states have internal predecessors, (4913), 0 states have call successors, (0), 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 5264
[2023-11-29 06:18:37,938 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:18:37,949 INFO  L225             Difference]: With dead ends: 22523
[2023-11-29 06:18:37,949 INFO  L226             Difference]: Without dead ends: 15052
[2023-11-29 06:18:37,955 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5273 GetRequests, 5261 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:18:37,955 INFO  L413           NwaCegarLoop]: 12729 mSDtfsCounter, 33331 mSDsluCounter, 50020 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33331 SdHoareTripleChecker+Valid, 62749 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:18:37,955 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33331 Valid, 62749 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:18:37,966 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15052 states.
[2023-11-29 06:18:38,035 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15052 to 8244.
[2023-11-29 06:18:38,042 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8244 states, 8243 states have (on average 1.6571636540094625) internal successors, (13660), 8243 states have internal predecessors, (13660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:38,051 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8244 states to 8244 states and 13660 transitions.
[2023-11-29 06:18:38,051 INFO  L78                 Accepts]: Start accepts. Automaton has 8244 states and 13660 transitions. Word has length 5264
[2023-11-29 06:18:38,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:18:38,054 INFO  L495      AbstractCegarLoop]: Abstraction has 8244 states and 13660 transitions.
[2023-11-29 06:18:38,055 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 701.8571428571429) internal successors, (4913), 7 states have internal predecessors, (4913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:38,055 INFO  L276                IsEmpty]: Start isEmpty. Operand 8244 states and 13660 transitions.
[2023-11-29 06:18:38,163 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5266
[2023-11-29 06:18:38,163 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:18:38,164 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:18:38,225 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0
[2023-11-29 06:18:38,365 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:38,365 INFO  L420      AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:18:38,365 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:18:38,366 INFO  L85        PathProgramCache]: Analyzing trace with hash -1067981517, now seen corresponding path program 1 times
[2023-11-29 06:18:38,366 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:18:38,366 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369071830]
[2023-11-29 06:18:38,367 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:38,367 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:18:38,728 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:18:38,728 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483495010]
[2023-11-29 06:18:38,729 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:38,729 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:38,729 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:18:38,730 INFO  L229       MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:18:38,730 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process
[2023-11-29 06:18:43,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:18:44,054 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23341 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:18:44,111 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:18:44,338 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked.
[2023-11-29 06:18:44,338 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:18:44,338 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:18:44,338 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369071830]
[2023-11-29 06:18:44,338 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:18:44,338 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483495010]
[2023-11-29 06:18:44,338 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [483495010] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:18:44,339 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:18:44,340 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:18:44,340 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011552578]
[2023-11-29 06:18:44,340 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:18:44,343 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:18:44,343 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:18:44,345 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:18:44,345 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:18:44,346 INFO  L87              Difference]: Start difference. First operand 8244 states and 13660 transitions. Second operand  has 7 states, 7 states have (on average 702.5714285714286) internal successors, (4918), 7 states have internal predecessors, (4918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:44,754 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:18:44,754 INFO  L93              Difference]: Finished difference Result 22538 states and 37325 transitions.
[2023-11-29 06:18:44,755 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:18:44,756 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 702.5714285714286) internal successors, (4918), 7 states have internal predecessors, (4918), 0 states have call successors, (0), 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 5265
[2023-11-29 06:18:44,759 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:18:44,770 INFO  L225             Difference]: With dead ends: 22538
[2023-11-29 06:18:44,770 INFO  L226             Difference]: Without dead ends: 15056
[2023-11-29 06:18:44,776 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5274 GetRequests, 5262 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:18:44,776 INFO  L413           NwaCegarLoop]: 12719 mSDtfsCounter, 33335 mSDsluCounter, 49990 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33335 SdHoareTripleChecker+Valid, 62709 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:18:44,776 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33335 Valid, 62709 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:18:44,786 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15056 states.
[2023-11-29 06:18:44,856 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15056 to 8249.
[2023-11-29 06:18:44,863 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8249 states, 8248 states have (on average 1.657007759456838) internal successors, (13667), 8248 states have internal predecessors, (13667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:44,871 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8249 states to 8249 states and 13667 transitions.
[2023-11-29 06:18:44,871 INFO  L78                 Accepts]: Start accepts. Automaton has 8249 states and 13667 transitions. Word has length 5265
[2023-11-29 06:18:44,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:18:44,874 INFO  L495      AbstractCegarLoop]: Abstraction has 8249 states and 13667 transitions.
[2023-11-29 06:18:44,875 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 702.5714285714286) internal successors, (4918), 7 states have internal predecessors, (4918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:44,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 8249 states and 13667 transitions.
[2023-11-29 06:18:44,983 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5267
[2023-11-29 06:18:44,983 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:18:44,984 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:18:45,042 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0
[2023-11-29 06:18:45,184 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:45,185 INFO  L420      AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:18:45,185 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:18:45,186 INFO  L85        PathProgramCache]: Analyzing trace with hash 873768011, now seen corresponding path program 1 times
[2023-11-29 06:18:45,186 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:18:45,186 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054489332]
[2023-11-29 06:18:45,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:45,186 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:18:45,548 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:18:45,548 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489978981]
[2023-11-29 06:18:45,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:45,549 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:45,549 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:18:45,550 INFO  L229       MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:18:45,550 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process
[2023-11-29 06:18:50,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:18:50,902 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23344 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:18:50,960 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:18:51,187 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked.
[2023-11-29 06:18:51,187 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:18:51,187 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:18:51,187 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054489332]
[2023-11-29 06:18:51,187 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:18:51,187 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489978981]
[2023-11-29 06:18:51,187 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [489978981] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:18:51,187 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:18:51,189 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:18:51,189 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309592607]
[2023-11-29 06:18:51,189 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:18:51,192 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:18:51,192 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:18:51,194 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:18:51,194 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:18:51,195 INFO  L87              Difference]: Start difference. First operand 8249 states and 13667 transitions. Second operand  has 7 states, 7 states have (on average 703.2857142857143) internal successors, (4923), 7 states have internal predecessors, (4923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:51,624 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:18:51,624 INFO  L93              Difference]: Finished difference Result 22553 states and 37346 transitions.
[2023-11-29 06:18:51,625 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:18:51,626 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 703.2857142857143) internal successors, (4923), 7 states have internal predecessors, (4923), 0 states have call successors, (0), 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 5266
[2023-11-29 06:18:51,629 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:18:51,640 INFO  L225             Difference]: With dead ends: 22553
[2023-11-29 06:18:51,640 INFO  L226             Difference]: Without dead ends: 15060
[2023-11-29 06:18:51,646 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5275 GetRequests, 5263 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:18:51,646 INFO  L413           NwaCegarLoop]: 12709 mSDtfsCounter, 33339 mSDsluCounter, 49960 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33339 SdHoareTripleChecker+Valid, 62669 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:18:51,646 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33339 Valid, 62669 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:18:51,656 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15060 states.
[2023-11-29 06:18:51,725 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15060 to 8254.
[2023-11-29 06:18:51,732 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8254 states, 8253 states have (on average 1.6568520537986187) internal successors, (13674), 8253 states have internal predecessors, (13674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:51,740 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8254 states to 8254 states and 13674 transitions.
[2023-11-29 06:18:51,740 INFO  L78                 Accepts]: Start accepts. Automaton has 8254 states and 13674 transitions. Word has length 5266
[2023-11-29 06:18:51,743 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:18:51,743 INFO  L495      AbstractCegarLoop]: Abstraction has 8254 states and 13674 transitions.
[2023-11-29 06:18:51,744 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 703.2857142857143) internal successors, (4923), 7 states have internal predecessors, (4923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:51,744 INFO  L276                IsEmpty]: Start isEmpty. Operand 8254 states and 13674 transitions.
[2023-11-29 06:18:51,852 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5268
[2023-11-29 06:18:51,853 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:18:51,854 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:18:51,912 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0
[2023-11-29 06:18:52,054 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:52,054 INFO  L420      AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:18:52,054 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:18:52,055 INFO  L85        PathProgramCache]: Analyzing trace with hash -1879013655, now seen corresponding path program 1 times
[2023-11-29 06:18:52,055 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:18:52,055 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406430922]
[2023-11-29 06:18:52,056 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:52,056 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:18:52,420 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:18:52,420 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273959443]
[2023-11-29 06:18:52,421 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:52,421 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:52,421 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:18:52,422 INFO  L229       MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:18:52,425 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process
[2023-11-29 06:18:57,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:18:57,676 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23348 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:18:57,732 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:18:57,964 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2023-11-29 06:18:57,964 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:18:57,965 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:18:57,965 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406430922]
[2023-11-29 06:18:57,965 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:18:57,965 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273959443]
[2023-11-29 06:18:57,965 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [273959443] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:18:57,965 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:18:57,966 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:18:57,966 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626799119]
[2023-11-29 06:18:57,966 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:18:57,968 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:18:57,968 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:18:57,970 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:18:57,970 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:18:57,971 INFO  L87              Difference]: Start difference. First operand 8254 states and 13674 transitions. Second operand  has 7 states, 7 states have (on average 704.0) internal successors, (4928), 7 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:58,390 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:18:58,390 INFO  L93              Difference]: Finished difference Result 22568 states and 37367 transitions.
[2023-11-29 06:18:58,390 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:18:58,391 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 704.0) internal successors, (4928), 7 states have internal predecessors, (4928), 0 states have call successors, (0), 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 5267
[2023-11-29 06:18:58,395 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:18:58,405 INFO  L225             Difference]: With dead ends: 22568
[2023-11-29 06:18:58,406 INFO  L226             Difference]: Without dead ends: 15064
[2023-11-29 06:18:58,411 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5276 GetRequests, 5264 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:18:58,411 INFO  L413           NwaCegarLoop]: 12699 mSDtfsCounter, 33343 mSDsluCounter, 49930 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33343 SdHoareTripleChecker+Valid, 62629 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:18:58,412 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33343 Valid, 62629 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:18:58,422 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15064 states.
[2023-11-29 06:18:58,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15064 to 8259.
[2023-11-29 06:18:58,498 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8259 states, 8258 states have (on average 1.6566965366916928) internal successors, (13681), 8258 states have internal predecessors, (13681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:58,506 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8259 states to 8259 states and 13681 transitions.
[2023-11-29 06:18:58,506 INFO  L78                 Accepts]: Start accepts. Automaton has 8259 states and 13681 transitions. Word has length 5267
[2023-11-29 06:18:58,509 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:18:58,509 INFO  L495      AbstractCegarLoop]: Abstraction has 8259 states and 13681 transitions.
[2023-11-29 06:18:58,510 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 704.0) internal successors, (4928), 7 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:18:58,510 INFO  L276                IsEmpty]: Start isEmpty. Operand 8259 states and 13681 transitions.
[2023-11-29 06:18:58,618 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5269
[2023-11-29 06:18:58,618 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:18:58,619 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:18:58,678 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0
[2023-11-29 06:18:58,820 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:58,820 INFO  L420      AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:18:58,820 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:18:58,821 INFO  L85        PathProgramCache]: Analyzing trace with hash 1664044953, now seen corresponding path program 1 times
[2023-11-29 06:18:58,822 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:18:58,822 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974073102]
[2023-11-29 06:18:58,823 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:58,823 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:18:59,185 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:18:59,185 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012831992]
[2023-11-29 06:18:59,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:18:59,186 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:18:59,186 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:18:59,187 INFO  L229       MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:18:59,187 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process
[2023-11-29 06:19:04,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:19:04,466 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23351 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:19:04,522 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:19:04,740 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked.
[2023-11-29 06:19:04,741 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:19:04,741 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:19:04,741 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974073102]
[2023-11-29 06:19:04,741 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:19:04,741 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012831992]
[2023-11-29 06:19:04,741 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012831992] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:19:04,741 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:19:04,742 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:19:04,743 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455115941]
[2023-11-29 06:19:04,743 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:19:04,745 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:19:04,745 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:19:04,747 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:19:04,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:19:04,748 INFO  L87              Difference]: Start difference. First operand 8259 states and 13681 transitions. Second operand  has 7 states, 7 states have (on average 704.7142857142857) internal successors, (4933), 7 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:05,174 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:19:05,175 INFO  L93              Difference]: Finished difference Result 22583 states and 37388 transitions.
[2023-11-29 06:19:05,175 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:19:05,176 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 704.7142857142857) internal successors, (4933), 7 states have internal predecessors, (4933), 0 states have call successors, (0), 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 5268
[2023-11-29 06:19:05,180 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:19:05,191 INFO  L225             Difference]: With dead ends: 22583
[2023-11-29 06:19:05,191 INFO  L226             Difference]: Without dead ends: 15068
[2023-11-29 06:19:05,196 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5277 GetRequests, 5265 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:19:05,196 INFO  L413           NwaCegarLoop]: 12689 mSDtfsCounter, 33347 mSDsluCounter, 49900 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33347 SdHoareTripleChecker+Valid, 62589 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:19:05,196 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33347 Valid, 62589 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:19:05,207 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15068 states.
[2023-11-29 06:19:05,276 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15068 to 8264.
[2023-11-29 06:19:05,282 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8264 states, 8263 states have (on average 1.6565412077937796) internal successors, (13688), 8263 states have internal predecessors, (13688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:05,291 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 13688 transitions.
[2023-11-29 06:19:05,291 INFO  L78                 Accepts]: Start accepts. Automaton has 8264 states and 13688 transitions. Word has length 5268
[2023-11-29 06:19:05,294 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:19:05,294 INFO  L495      AbstractCegarLoop]: Abstraction has 8264 states and 13688 transitions.
[2023-11-29 06:19:05,294 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 704.7142857142857) internal successors, (4933), 7 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:05,295 INFO  L276                IsEmpty]: Start isEmpty. Operand 8264 states and 13688 transitions.
[2023-11-29 06:19:05,403 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5270
[2023-11-29 06:19:05,403 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:19:05,404 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:19:05,463 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0
[2023-11-29 06:19:05,604 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:19:05,605 INFO  L420      AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:19:05,605 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:19:05,606 INFO  L85        PathProgramCache]: Analyzing trace with hash 288092191, now seen corresponding path program 1 times
[2023-11-29 06:19:05,606 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:19:05,606 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034400526]
[2023-11-29 06:19:05,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:05,606 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:19:05,969 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:19:05,970 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401783424]
[2023-11-29 06:19:05,971 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:05,971 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:19:05,971 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:19:05,971 INFO  L229       MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:19:05,972 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process
[2023-11-29 06:19:11,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:19:11,315 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23355 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:19:11,372 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:19:11,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked.
[2023-11-29 06:19:11,595 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:19:11,595 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:19:11,595 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034400526]
[2023-11-29 06:19:11,595 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:19:11,595 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401783424]
[2023-11-29 06:19:11,596 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [401783424] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:19:11,596 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:19:11,597 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:19:11,597 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866777065]
[2023-11-29 06:19:11,597 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:19:11,600 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:19:11,600 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:19:11,602 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:19:11,603 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:19:11,603 INFO  L87              Difference]: Start difference. First operand 8264 states and 13688 transitions. Second operand  has 7 states, 7 states have (on average 705.4285714285714) internal successors, (4938), 7 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:12,030 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:19:12,030 INFO  L93              Difference]: Finished difference Result 22598 states and 37409 transitions.
[2023-11-29 06:19:12,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:19:12,032 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 705.4285714285714) internal successors, (4938), 7 states have internal predecessors, (4938), 0 states have call successors, (0), 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 5269
[2023-11-29 06:19:12,036 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:19:12,047 INFO  L225             Difference]: With dead ends: 22598
[2023-11-29 06:19:12,047 INFO  L226             Difference]: Without dead ends: 15072
[2023-11-29 06:19:12,052 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5278 GetRequests, 5266 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:19:12,053 INFO  L413           NwaCegarLoop]: 12679 mSDtfsCounter, 33351 mSDsluCounter, 49870 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33351 SdHoareTripleChecker+Valid, 62549 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:19:12,053 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33351 Valid, 62549 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:19:12,063 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15072 states.
[2023-11-29 06:19:12,133 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15072 to 8269.
[2023-11-29 06:19:12,140 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8269 states, 8268 states have (on average 1.6563860667634251) internal successors, (13695), 8268 states have internal predecessors, (13695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:12,148 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8269 states to 8269 states and 13695 transitions.
[2023-11-29 06:19:12,148 INFO  L78                 Accepts]: Start accepts. Automaton has 8269 states and 13695 transitions. Word has length 5269
[2023-11-29 06:19:12,151 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:19:12,151 INFO  L495      AbstractCegarLoop]: Abstraction has 8269 states and 13695 transitions.
[2023-11-29 06:19:12,152 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 705.4285714285714) internal successors, (4938), 7 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:12,152 INFO  L276                IsEmpty]: Start isEmpty. Operand 8269 states and 13695 transitions.
[2023-11-29 06:19:12,261 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5271
[2023-11-29 06:19:12,261 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:19:12,262 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:19:12,321 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0
[2023-11-29 06:19:12,462 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84
[2023-11-29 06:19:12,463 INFO  L420      AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:19:12,463 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:19:12,463 INFO  L85        PathProgramCache]: Analyzing trace with hash 914103911, now seen corresponding path program 1 times
[2023-11-29 06:19:12,463 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:19:12,463 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114295621]
[2023-11-29 06:19:12,464 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:12,464 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:19:12,826 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:19:12,826 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098836794]
[2023-11-29 06:19:12,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:12,827 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:19:12,827 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:19:12,828 INFO  L229       MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:19:12,829 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process
[2023-11-29 06:19:17,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:19:18,072 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23358 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:19:18,127 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:19:18,336 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked.
[2023-11-29 06:19:18,336 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:19:18,336 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:19:18,336 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114295621]
[2023-11-29 06:19:18,336 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:19:18,337 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098836794]
[2023-11-29 06:19:18,337 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098836794] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:19:18,337 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:19:18,337 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:19:18,338 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064364482]
[2023-11-29 06:19:18,338 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:19:18,340 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:19:18,340 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:19:18,342 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:19:18,342 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:19:18,343 INFO  L87              Difference]: Start difference. First operand 8269 states and 13695 transitions. Second operand  has 7 states, 7 states have (on average 706.1428571428571) internal successors, (4943), 7 states have internal predecessors, (4943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:18,758 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:19:18,758 INFO  L93              Difference]: Finished difference Result 22613 states and 37430 transitions.
[2023-11-29 06:19:18,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:19:18,759 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 706.1428571428571) internal successors, (4943), 7 states have internal predecessors, (4943), 0 states have call successors, (0), 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 5270
[2023-11-29 06:19:18,763 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:19:18,774 INFO  L225             Difference]: With dead ends: 22613
[2023-11-29 06:19:18,774 INFO  L226             Difference]: Without dead ends: 15076
[2023-11-29 06:19:18,780 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5279 GetRequests, 5267 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:19:18,780 INFO  L413           NwaCegarLoop]: 12669 mSDtfsCounter, 33355 mSDsluCounter, 49840 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33355 SdHoareTripleChecker+Valid, 62509 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:19:18,780 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33355 Valid, 62509 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:19:18,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15076 states.
[2023-11-29 06:19:18,861 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15076 to 8274.
[2023-11-29 06:19:18,868 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8274 states, 8273 states have (on average 1.6562311132600025) internal successors, (13702), 8273 states have internal predecessors, (13702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:18,877 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 13702 transitions.
[2023-11-29 06:19:18,877 INFO  L78                 Accepts]: Start accepts. Automaton has 8274 states and 13702 transitions. Word has length 5270
[2023-11-29 06:19:18,879 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:19:18,880 INFO  L495      AbstractCegarLoop]: Abstraction has 8274 states and 13702 transitions.
[2023-11-29 06:19:18,880 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 706.1428571428571) internal successors, (4943), 7 states have internal predecessors, (4943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:18,881 INFO  L276                IsEmpty]: Start isEmpty. Operand 8274 states and 13702 transitions.
[2023-11-29 06:19:18,989 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5272
[2023-11-29 06:19:18,989 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:19:18,990 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:19:19,049 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0
[2023-11-29 06:19:19,190 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85
[2023-11-29 06:19:19,191 INFO  L420      AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:19:19,191 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:19:19,192 INFO  L85        PathProgramCache]: Analyzing trace with hash -432668459, now seen corresponding path program 1 times
[2023-11-29 06:19:19,192 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:19:19,192 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120660847]
[2023-11-29 06:19:19,192 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:19,192 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:19:19,554 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:19:19,554 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564613497]
[2023-11-29 06:19:19,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:19,556 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:19:19,556 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:19:19,557 INFO  L229       MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:19:19,558 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process
[2023-11-29 06:19:24,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:19:24,871 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23362 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:19:24,927 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:19:25,140 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2023-11-29 06:19:25,140 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:19:25,140 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:19:25,141 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120660847]
[2023-11-29 06:19:25,141 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:19:25,141 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564613497]
[2023-11-29 06:19:25,141 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564613497] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:19:25,141 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:19:25,142 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:19:25,142 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245168414]
[2023-11-29 06:19:25,142 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:19:25,145 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:19:25,145 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:19:25,147 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:19:25,147 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:19:25,147 INFO  L87              Difference]: Start difference. First operand 8274 states and 13702 transitions. Second operand  has 7 states, 7 states have (on average 706.8571428571429) internal successors, (4948), 7 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:25,563 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:19:25,563 INFO  L93              Difference]: Finished difference Result 22628 states and 37451 transitions.
[2023-11-29 06:19:25,563 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:19:25,565 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 706.8571428571429) internal successors, (4948), 7 states have internal predecessors, (4948), 0 states have call successors, (0), 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 5271
[2023-11-29 06:19:25,568 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:19:25,579 INFO  L225             Difference]: With dead ends: 22628
[2023-11-29 06:19:25,579 INFO  L226             Difference]: Without dead ends: 15080
[2023-11-29 06:19:25,584 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5280 GetRequests, 5268 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:19:25,584 INFO  L413           NwaCegarLoop]: 12659 mSDtfsCounter, 33359 mSDsluCounter, 49810 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33359 SdHoareTripleChecker+Valid, 62469 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:19:25,585 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33359 Valid, 62469 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:19:25,596 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15080 states.
[2023-11-29 06:19:25,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15080 to 8279.
[2023-11-29 06:19:25,676 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8279 states, 8278 states have (on average 1.6560763469437063) internal successors, (13709), 8278 states have internal predecessors, (13709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:25,685 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8279 states to 8279 states and 13709 transitions.
[2023-11-29 06:19:25,686 INFO  L78                 Accepts]: Start accepts. Automaton has 8279 states and 13709 transitions. Word has length 5271
[2023-11-29 06:19:25,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:19:25,688 INFO  L495      AbstractCegarLoop]: Abstraction has 8279 states and 13709 transitions.
[2023-11-29 06:19:25,689 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 706.8571428571429) internal successors, (4948), 7 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:25,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 8279 states and 13709 transitions.
[2023-11-29 06:19:25,799 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5273
[2023-11-29 06:19:25,799 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:19:25,800 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:19:25,858 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0
[2023-11-29 06:19:26,000 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86
[2023-11-29 06:19:26,000 INFO  L420      AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:19:26,001 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:19:26,002 INFO  L85        PathProgramCache]: Analyzing trace with hash -593661771, now seen corresponding path program 1 times
[2023-11-29 06:19:26,002 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:19:26,002 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043313714]
[2023-11-29 06:19:26,003 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:26,003 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:19:26,364 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:19:26,365 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439518012]
[2023-11-29 06:19:26,366 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:26,366 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:19:26,366 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:19:26,367 INFO  L229       MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:19:26,367 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process
[2023-11-29 06:19:31,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:19:31,671 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23365 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:19:31,729 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:19:31,965 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked.
[2023-11-29 06:19:31,965 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:19:31,965 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:19:31,965 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043313714]
[2023-11-29 06:19:31,965 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:19:31,965 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439518012]
[2023-11-29 06:19:31,965 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [439518012] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:19:31,965 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:19:31,966 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:19:31,966 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468760680]
[2023-11-29 06:19:31,967 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:19:31,969 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:19:31,969 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:19:31,971 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:19:31,971 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:19:31,971 INFO  L87              Difference]: Start difference. First operand 8279 states and 13709 transitions. Second operand  has 8 states, 8 states have (on average 618.875) internal successors, (4951), 8 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:32,454 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:19:32,454 INFO  L93              Difference]: Finished difference Result 22636 states and 37461 transitions.
[2023-11-29 06:19:32,454 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:19:32,455 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 618.875) internal successors, (4951), 8 states have internal predecessors, (4951), 0 states have call successors, (0), 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 5272
[2023-11-29 06:19:32,458 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:19:32,469 INFO  L225             Difference]: With dead ends: 22636
[2023-11-29 06:19:32,469 INFO  L226             Difference]: Without dead ends: 15077
[2023-11-29 06:19:32,475 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5280 GetRequests, 5268 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:19:32,475 INFO  L413           NwaCegarLoop]: 12650 mSDtfsCounter, 33355 mSDsluCounter, 62422 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33355 SdHoareTripleChecker+Valid, 75072 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:19:32,475 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33355 Valid, 75072 Invalid, 63 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:19:32,487 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15077 states.
[2023-11-29 06:19:32,558 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15077 to 8281.
[2023-11-29 06:19:32,565 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:32,574 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:19:32,574 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5272
[2023-11-29 06:19:32,576 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:19:32,576 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:19:32,577 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 618.875) internal successors, (4951), 8 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:32,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:19:32,686 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5274
[2023-11-29 06:19:32,686 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:19:32,687 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:19:32,747 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0
[2023-11-29 06:19:32,888 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87
[2023-11-29 06:19:32,888 INFO  L420      AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:19:32,888 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:19:32,889 INFO  L85        PathProgramCache]: Analyzing trace with hash 1215090799, now seen corresponding path program 1 times
[2023-11-29 06:19:32,889 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:19:32,889 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372723460]
[2023-11-29 06:19:32,889 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:32,889 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:19:33,301 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:19:33,302 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749417883]
[2023-11-29 06:19:33,302 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:33,303 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:19:33,303 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:19:33,303 INFO  L229       MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:19:33,304 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process
[2023-11-29 06:19:38,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:19:38,572 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23368 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:19:38,627 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:19:38,849 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked.
[2023-11-29 06:19:38,849 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:19:38,849 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:19:38,849 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372723460]
[2023-11-29 06:19:38,850 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:19:38,850 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749417883]
[2023-11-29 06:19:38,850 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [749417883] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:19:38,850 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:19:38,850 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:19:38,851 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565142301]
[2023-11-29 06:19:38,851 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:19:38,853 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:19:38,853 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:19:38,855 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:19:38,855 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:19:38,855 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 7 states, 7 states have (on average 707.1428571428571) internal successors, (4950), 7 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:39,274 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:19:39,274 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:19:39,275 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:19:39,276 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 707.1428571428571) internal successors, (4950), 7 states have internal predecessors, (4950), 0 states have call successors, (0), 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 5273
[2023-11-29 06:19:39,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:19:39,290 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:19:39,290 INFO  L226             Difference]: Without dead ends: 15085
[2023-11-29 06:19:39,295 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5281 GetRequests, 5270 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 06:19:39,296 INFO  L413           NwaCegarLoop]: 12660 mSDtfsCounter, 33351 mSDsluCounter, 49811 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33351 SdHoareTripleChecker+Valid, 62471 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:19:39,296 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33351 Valid, 62471 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:19:39,306 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15085 states.
[2023-11-29 06:19:39,376 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15085 to 8281.
[2023-11-29 06:19:39,383 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:39,391 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:19:39,392 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5273
[2023-11-29 06:19:39,394 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:19:39,394 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:19:39,395 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 707.1428571428571) internal successors, (4950), 7 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:39,395 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:19:39,504 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5275
[2023-11-29 06:19:39,504 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:19:39,505 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:19:39,564 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0
[2023-11-29 06:19:39,705 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88
[2023-11-29 06:19:39,706 INFO  L420      AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:19:39,706 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:19:39,706 INFO  L85        PathProgramCache]: Analyzing trace with hash -334417483, now seen corresponding path program 1 times
[2023-11-29 06:19:39,707 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:19:39,707 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785069208]
[2023-11-29 06:19:39,707 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:39,707 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:19:40,071 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:19:40,071 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911146118]
[2023-11-29 06:19:40,072 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:40,072 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:19:40,072 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:19:40,073 INFO  L229       MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:19:40,074 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process
[2023-11-29 06:19:45,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:19:45,487 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23371 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:19:45,544 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:19:45,772 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked.
[2023-11-29 06:19:45,772 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:19:45,773 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:19:45,773 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785069208]
[2023-11-29 06:19:45,773 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:19:45,773 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911146118]
[2023-11-29 06:19:45,773 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911146118] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:19:45,773 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:19:45,774 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:19:45,774 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369116975]
[2023-11-29 06:19:45,774 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:19:45,776 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:19:45,776 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:19:45,778 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:19:45,778 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:19:45,778 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 618.625) internal successors, (4949), 8 states have internal predecessors, (4949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:46,237 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:19:46,237 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:19:46,237 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:19:46,238 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 618.625) internal successors, (4949), 8 states have internal predecessors, (4949), 0 states have call successors, (0), 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 5274
[2023-11-29 06:19:46,242 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:19:46,252 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:19:46,252 INFO  L226             Difference]: Without dead ends: 15091
[2023-11-29 06:19:46,258 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5282 GetRequests, 5270 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:19:46,258 INFO  L413           NwaCegarLoop]: 12670 mSDtfsCounter, 33347 mSDsluCounter, 61069 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33347 SdHoareTripleChecker+Valid, 73739 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:19:46,258 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33347 Valid, 73739 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:19:46,271 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15091 states.
[2023-11-29 06:19:46,342 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15091 to 8281.
[2023-11-29 06:19:46,348 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:46,357 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:19:46,357 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5274
[2023-11-29 06:19:46,359 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:19:46,360 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:19:46,360 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 618.625) internal successors, (4949), 8 states have internal predecessors, (4949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:46,360 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:19:46,469 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5276
[2023-11-29 06:19:46,469 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:19:46,470 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:19:46,529 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0
[2023-11-29 06:19:46,671 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89
[2023-11-29 06:19:46,671 INFO  L420      AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:19:46,671 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:19:46,672 INFO  L85        PathProgramCache]: Analyzing trace with hash -2072724565, now seen corresponding path program 1 times
[2023-11-29 06:19:46,673 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:19:46,673 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967941578]
[2023-11-29 06:19:46,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:46,674 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:19:47,038 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:19:47,038 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723049205]
[2023-11-29 06:19:47,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:47,039 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:19:47,039 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:19:47,040 INFO  L229       MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:19:47,042 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process
[2023-11-29 06:19:52,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:19:52,482 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23374 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:19:52,538 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:19:52,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked.
[2023-11-29 06:19:52,753 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:19:52,753 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:19:52,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967941578]
[2023-11-29 06:19:52,753 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:19:52,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723049205]
[2023-11-29 06:19:52,753 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723049205] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:19:52,753 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:19:52,754 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:19:52,754 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814751442]
[2023-11-29 06:19:52,754 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:19:52,756 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:19:52,756 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:19:52,758 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:19:52,758 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:19:52,759 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 7 states, 7 states have (on average 706.8571428571429) internal successors, (4948), 7 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:53,179 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:19:53,179 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:19:53,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:19:53,181 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 706.8571428571429) internal successors, (4948), 7 states have internal predecessors, (4948), 0 states have call successors, (0), 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 5275
[2023-11-29 06:19:53,184 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:19:53,195 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:19:53,195 INFO  L226             Difference]: Without dead ends: 15097
[2023-11-29 06:19:53,201 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5283 GetRequests, 5272 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 06:19:53,201 INFO  L413           NwaCegarLoop]: 12680 mSDtfsCounter, 33343 mSDsluCounter, 49871 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33343 SdHoareTripleChecker+Valid, 62551 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:19:53,201 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33343 Valid, 62551 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:19:53,212 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15097 states.
[2023-11-29 06:19:53,281 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15097 to 8281.
[2023-11-29 06:19:53,288 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:53,296 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:19:53,296 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5275
[2023-11-29 06:19:53,299 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:19:53,299 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:19:53,300 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 706.8571428571429) internal successors, (4948), 7 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:19:53,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:19:53,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5277
[2023-11-29 06:19:53,409 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:19:53,410 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:19:53,469 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0
[2023-11-29 06:19:53,610 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:19:53,611 INFO  L420      AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:19:53,611 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:19:53,611 INFO  L85        PathProgramCache]: Analyzing trace with hash -1918408139, now seen corresponding path program 1 times
[2023-11-29 06:19:53,611 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:19:53,611 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894218122]
[2023-11-29 06:19:53,612 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:53,612 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:19:53,976 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:19:53,976 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241451129]
[2023-11-29 06:19:53,977 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:19:53,977 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:19:53,977 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:19:53,978 INFO  L229       MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:19:53,978 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process
[2023-11-29 06:19:59,204 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:19:59,345 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23377 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:19:59,404 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:19:59,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked.
[2023-11-29 06:19:59,639 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:19:59,640 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:19:59,640 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894218122]
[2023-11-29 06:19:59,640 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:19:59,640 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241451129]
[2023-11-29 06:19:59,640 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [241451129] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:19:59,640 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:19:59,641 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:19:59,641 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003865537]
[2023-11-29 06:19:59,641 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:19:59,643 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:19:59,643 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:19:59,645 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:19:59,645 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:19:59,646 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 618.375) internal successors, (4947), 8 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:00,110 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:20:00,110 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:20:00,110 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:20:00,111 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 618.375) internal successors, (4947), 8 states have internal predecessors, (4947), 0 states have call successors, (0), 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 5276
[2023-11-29 06:20:00,114 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:20:00,126 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:20:00,126 INFO  L226             Difference]: Without dead ends: 15103
[2023-11-29 06:20:00,131 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5284 GetRequests, 5272 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:20:00,131 INFO  L413           NwaCegarLoop]: 12690 mSDtfsCounter, 33339 mSDsluCounter, 61135 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33339 SdHoareTripleChecker+Valid, 73825 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:20:00,132 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33339 Valid, 73825 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:20:00,142 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15103 states.
[2023-11-29 06:20:00,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15103 to 8281.
[2023-11-29 06:20:00,220 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:00,228 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:20:00,228 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5276
[2023-11-29 06:20:00,231 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:20:00,231 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:20:00,232 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 618.375) internal successors, (4947), 8 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:00,232 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:20:00,341 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5278
[2023-11-29 06:20:00,341 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:20:00,342 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:20:00,401 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0
[2023-11-29 06:20:00,542 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:00,543 INFO  L420      AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:20:00,543 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:20:00,543 INFO  L85        PathProgramCache]: Analyzing trace with hash 782498407, now seen corresponding path program 1 times
[2023-11-29 06:20:00,544 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:20:00,544 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147772303]
[2023-11-29 06:20:00,544 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:00,544 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:20:00,910 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:20:00,910 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842277724]
[2023-11-29 06:20:00,911 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:00,911 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:00,911 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:20:00,911 INFO  L229       MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:20:00,912 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process
[2023-11-29 06:20:06,162 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:20:06,299 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23380 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:20:06,355 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:20:06,571 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked.
[2023-11-29 06:20:06,572 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:20:06,572 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:20:06,572 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147772303]
[2023-11-29 06:20:06,572 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:20:06,572 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842277724]
[2023-11-29 06:20:06,572 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [842277724] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:20:06,572 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:20:06,573 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:20:06,573 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569381133]
[2023-11-29 06:20:06,574 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:20:06,576 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:20:06,576 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:20:06,578 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:20:06,578 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:20:06,579 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 7 states, 7 states have (on average 706.5714285714286) internal successors, (4946), 7 states have internal predecessors, (4946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:06,989 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:20:06,989 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:20:06,989 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:20:06,990 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 706.5714285714286) internal successors, (4946), 7 states have internal predecessors, (4946), 0 states have call successors, (0), 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 5277
[2023-11-29 06:20:06,994 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:20:07,004 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:20:07,005 INFO  L226             Difference]: Without dead ends: 15109
[2023-11-29 06:20:07,010 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5285 GetRequests, 5274 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 06:20:07,011 INFO  L413           NwaCegarLoop]: 12700 mSDtfsCounter, 33335 mSDsluCounter, 49931 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33335 SdHoareTripleChecker+Valid, 62631 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:20:07,011 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33335 Valid, 62631 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:20:07,021 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15109 states.
[2023-11-29 06:20:07,091 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15109 to 8281.
[2023-11-29 06:20:07,098 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:07,107 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:20:07,107 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5277
[2023-11-29 06:20:07,110 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:20:07,110 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:20:07,111 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 706.5714285714286) internal successors, (4946), 7 states have internal predecessors, (4946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:07,111 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:20:07,220 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5279
[2023-11-29 06:20:07,220 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:20:07,221 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:20:07,279 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0
[2023-11-29 06:20:07,421 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92
[2023-11-29 06:20:07,422 INFO  L420      AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:20:07,422 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:20:07,423 INFO  L85        PathProgramCache]: Analyzing trace with hash 2075630133, now seen corresponding path program 1 times
[2023-11-29 06:20:07,423 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:20:07,423 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109325168]
[2023-11-29 06:20:07,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:07,424 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:20:07,796 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:20:07,797 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727609521]
[2023-11-29 06:20:07,798 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:07,798 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:07,798 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:20:07,799 INFO  L229       MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:20:07,799 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process
[2023-11-29 06:20:12,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:20:12,878 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23383 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:20:12,935 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:20:13,188 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked.
[2023-11-29 06:20:13,188 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:20:13,188 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:20:13,189 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109325168]
[2023-11-29 06:20:13,189 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:20:13,189 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727609521]
[2023-11-29 06:20:13,189 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [727609521] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:20:13,189 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:20:13,190 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:20:13,190 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93172275]
[2023-11-29 06:20:13,190 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:20:13,193 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:20:13,193 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:20:13,196 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:20:13,196 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:20:13,197 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 618.125) internal successors, (4945), 8 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:13,699 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:20:13,699 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:20:13,700 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:20:13,701 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 618.125) internal successors, (4945), 8 states have internal predecessors, (4945), 0 states have call successors, (0), 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 5278
[2023-11-29 06:20:13,704 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:20:13,715 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:20:13,715 INFO  L226             Difference]: Without dead ends: 15115
[2023-11-29 06:20:13,721 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5286 GetRequests, 5274 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:20:13,721 INFO  L413           NwaCegarLoop]: 12710 mSDtfsCounter, 33331 mSDsluCounter, 62662 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33331 SdHoareTripleChecker+Valid, 75372 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:20:13,721 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33331 Valid, 75372 Invalid, 63 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:20:13,732 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15115 states.
[2023-11-29 06:20:13,803 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15115 to 8281.
[2023-11-29 06:20:13,809 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:13,818 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:20:13,818 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5278
[2023-11-29 06:20:13,821 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:20:13,821 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:20:13,822 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 618.125) internal successors, (4945), 8 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:13,822 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:20:13,931 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5280
[2023-11-29 06:20:13,931 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:20:13,932 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:20:13,991 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0
[2023-11-29 06:20:14,132 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93
[2023-11-29 06:20:14,132 INFO  L420      AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:20:14,133 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:20:14,134 INFO  L85        PathProgramCache]: Analyzing trace with hash 257477795, now seen corresponding path program 1 times
[2023-11-29 06:20:14,134 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:20:14,134 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236800093]
[2023-11-29 06:20:14,134 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:14,134 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:20:14,497 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:20:14,497 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686535898]
[2023-11-29 06:20:14,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:14,498 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:14,498 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:20:14,499 INFO  L229       MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:20:14,500 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process
[2023-11-29 06:20:19,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:20:19,937 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23386 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:20:19,991 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:20:20,222 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2023-11-29 06:20:20,222 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:20:20,222 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:20:20,222 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236800093]
[2023-11-29 06:20:20,222 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:20:20,222 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686535898]
[2023-11-29 06:20:20,222 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [686535898] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:20:20,222 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:20:20,223 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:20:20,223 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749325584]
[2023-11-29 06:20:20,223 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:20:20,225 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:20:20,225 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:20:20,227 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:20:20,227 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:20:20,228 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 7 states, 7 states have (on average 706.2857142857143) internal successors, (4944), 7 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:20,637 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:20:20,637 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:20:20,638 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:20:20,639 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 706.2857142857143) internal successors, (4944), 7 states have internal predecessors, (4944), 0 states have call successors, (0), 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 5279
[2023-11-29 06:20:20,642 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:20:20,653 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:20:20,653 INFO  L226             Difference]: Without dead ends: 15121
[2023-11-29 06:20:20,658 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5287 GetRequests, 5276 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 06:20:20,658 INFO  L413           NwaCegarLoop]: 12720 mSDtfsCounter, 33327 mSDsluCounter, 49991 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33327 SdHoareTripleChecker+Valid, 62711 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:20:20,659 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33327 Valid, 62711 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:20:20,669 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15121 states.
[2023-11-29 06:20:20,740 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15121 to 8281.
[2023-11-29 06:20:20,747 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:20,755 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:20:20,756 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5279
[2023-11-29 06:20:20,758 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:20:20,758 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:20:20,759 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 706.2857142857143) internal successors, (4944), 7 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:20,759 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:20:20,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5281
[2023-11-29 06:20:20,868 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:20:20,869 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:20:20,928 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0
[2023-11-29 06:20:21,070 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:21,070 INFO  L420      AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:20:21,070 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:20:21,071 INFO  L85        PathProgramCache]: Analyzing trace with hash -328121931, now seen corresponding path program 1 times
[2023-11-29 06:20:21,071 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:20:21,071 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683546585]
[2023-11-29 06:20:21,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:21,071 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:20:21,438 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:20:21,438 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860418037]
[2023-11-29 06:20:21,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:21,439 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:21,439 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:20:21,440 INFO  L229       MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:20:21,441 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process
[2023-11-29 06:20:26,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:20:26,775 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23389 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:20:26,832 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:20:27,074 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked.
[2023-11-29 06:20:27,074 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:20:27,074 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:20:27,074 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683546585]
[2023-11-29 06:20:27,074 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:20:27,074 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860418037]
[2023-11-29 06:20:27,074 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [860418037] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:20:27,074 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:20:27,076 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:20:27,076 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015881973]
[2023-11-29 06:20:27,076 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:20:27,078 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:20:27,079 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:20:27,081 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:20:27,081 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:20:27,082 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 617.875) internal successors, (4943), 8 states have internal predecessors, (4943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:27,554 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:20:27,554 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:20:27,555 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:20:27,556 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 617.875) internal successors, (4943), 8 states have internal predecessors, (4943), 0 states have call successors, (0), 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 5280
[2023-11-29 06:20:27,559 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:20:27,571 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:20:27,571 INFO  L226             Difference]: Without dead ends: 15127
[2023-11-29 06:20:27,578 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5288 GetRequests, 5276 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:20:27,578 INFO  L413           NwaCegarLoop]: 12730 mSDtfsCounter, 33323 mSDsluCounter, 61267 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33323 SdHoareTripleChecker+Valid, 73997 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:20:27,578 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33323 Valid, 73997 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:20:27,590 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15127 states.
[2023-11-29 06:20:27,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15127 to 8281.
[2023-11-29 06:20:27,668 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:27,677 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:20:27,677 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5280
[2023-11-29 06:20:27,679 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:20:27,679 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:20:27,680 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 617.875) internal successors, (4943), 8 states have internal predecessors, (4943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:27,680 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:20:27,788 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5282
[2023-11-29 06:20:27,789 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:20:27,790 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:20:27,849 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0
[2023-11-29 06:20:27,990 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:27,990 INFO  L420      AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:20:27,990 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:20:27,992 INFO  L85        PathProgramCache]: Analyzing trace with hash 373912159, now seen corresponding path program 1 times
[2023-11-29 06:20:27,992 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:20:27,992 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594431486]
[2023-11-29 06:20:27,993 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:27,993 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:20:28,358 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:20:28,358 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068754719]
[2023-11-29 06:20:28,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:28,359 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:28,359 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:20:28,360 INFO  L229       MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:20:28,362 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process
[2023-11-29 06:20:33,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:20:33,600 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23392 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:20:33,656 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:20:33,870 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked.
[2023-11-29 06:20:33,871 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:20:33,871 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:20:33,871 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594431486]
[2023-11-29 06:20:33,871 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:20:33,871 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068754719]
[2023-11-29 06:20:33,871 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068754719] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:20:33,871 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:20:33,872 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:20:33,873 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350972647]
[2023-11-29 06:20:33,873 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:20:33,875 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:20:33,875 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:20:33,877 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:20:33,877 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:20:33,878 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:34,305 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:20:34,305 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:20:34,306 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:20:34,307 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 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 5281
[2023-11-29 06:20:34,310 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:20:34,321 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:20:34,321 INFO  L226             Difference]: Without dead ends: 15133
[2023-11-29 06:20:34,326 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5289 GetRequests, 5278 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 06:20:34,327 INFO  L413           NwaCegarLoop]: 12740 mSDtfsCounter, 33319 mSDsluCounter, 50051 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33319 SdHoareTripleChecker+Valid, 62791 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:20:34,327 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33319 Valid, 62791 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:20:34,337 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15133 states.
[2023-11-29 06:20:34,409 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15133 to 8281.
[2023-11-29 06:20:34,415 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:34,424 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:20:34,424 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5281
[2023-11-29 06:20:34,427 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:20:34,427 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:20:34,428 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:34,428 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:20:34,537 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5283
[2023-11-29 06:20:34,537 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:20:34,538 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:20:34,597 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0
[2023-11-29 06:20:34,738 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:34,739 INFO  L420      AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:20:34,739 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:20:34,740 INFO  L85        PathProgramCache]: Analyzing trace with hash -1042554699, now seen corresponding path program 1 times
[2023-11-29 06:20:34,740 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:20:34,740 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696878835]
[2023-11-29 06:20:34,740 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:34,740 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:20:35,105 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:20:35,105 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621393934]
[2023-11-29 06:20:35,106 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:35,106 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:35,106 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:20:35,107 INFO  L229       MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:20:35,107 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process
[2023-11-29 06:20:40,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:20:40,364 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23395 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:20:40,421 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:20:40,645 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked.
[2023-11-29 06:20:40,646 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:20:40,646 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:20:40,646 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696878835]
[2023-11-29 06:20:40,646 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:20:40,646 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621393934]
[2023-11-29 06:20:40,646 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621393934] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:20:40,646 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:20:40,647 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:20:40,648 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606399785]
[2023-11-29 06:20:40,648 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:20:40,650 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:20:40,650 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:20:40,652 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:20:40,652 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:20:40,653 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 617.625) internal successors, (4941), 8 states have internal predecessors, (4941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:41,104 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:20:41,104 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:20:41,104 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:20:41,105 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 617.625) internal successors, (4941), 8 states have internal predecessors, (4941), 0 states have call successors, (0), 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 5282
[2023-11-29 06:20:41,108 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:20:41,119 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:20:41,119 INFO  L226             Difference]: Without dead ends: 15139
[2023-11-29 06:20:41,125 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5290 GetRequests, 5278 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:20:41,125 INFO  L413           NwaCegarLoop]: 12750 mSDtfsCounter, 33315 mSDsluCounter, 61333 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33315 SdHoareTripleChecker+Valid, 74083 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:20:41,125 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33315 Valid, 74083 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:20:41,135 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15139 states.
[2023-11-29 06:20:41,206 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15139 to 8281.
[2023-11-29 06:20:41,213 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:41,222 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:20:41,222 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5282
[2023-11-29 06:20:41,224 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:20:41,224 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:20:41,225 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 617.625) internal successors, (4941), 8 states have internal predecessors, (4941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:41,225 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:20:41,335 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5284
[2023-11-29 06:20:41,335 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:20:41,336 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:20:41,394 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0
[2023-11-29 06:20:41,536 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:41,536 INFO  L420      AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:20:41,537 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:20:41,537 INFO  L85        PathProgramCache]: Analyzing trace with hash -1501287525, now seen corresponding path program 1 times
[2023-11-29 06:20:41,537 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:20:41,537 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937017115]
[2023-11-29 06:20:41,538 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:41,538 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:20:41,902 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:20:41,902 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041427809]
[2023-11-29 06:20:41,903 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:41,903 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:41,903 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:20:41,904 INFO  L229       MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:20:41,905 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process
[2023-11-29 06:20:47,179 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:20:47,317 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23398 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:20:47,371 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:20:47,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked.
[2023-11-29 06:20:47,582 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:20:47,582 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:20:47,582 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937017115]
[2023-11-29 06:20:47,582 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:20:47,582 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041427809]
[2023-11-29 06:20:47,582 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041427809] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:20:47,582 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:20:47,583 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:20:47,584 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039617150]
[2023-11-29 06:20:47,584 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:20:47,586 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:20:47,586 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:20:47,588 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:20:47,588 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:20:47,589 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 7 states, 7 states have (on average 705.7142857142857) internal successors, (4940), 7 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:48,012 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:20:48,012 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:20:48,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:20:48,014 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 705.7142857142857) internal successors, (4940), 7 states have internal predecessors, (4940), 0 states have call successors, (0), 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 5283
[2023-11-29 06:20:48,017 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:20:48,028 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:20:48,028 INFO  L226             Difference]: Without dead ends: 15145
[2023-11-29 06:20:48,033 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5291 GetRequests, 5280 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 06:20:48,033 INFO  L413           NwaCegarLoop]: 12760 mSDtfsCounter, 33311 mSDsluCounter, 50111 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33311 SdHoareTripleChecker+Valid, 62871 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:20:48,034 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33311 Valid, 62871 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:20:48,044 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15145 states.
[2023-11-29 06:20:48,115 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15145 to 8281.
[2023-11-29 06:20:48,122 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:48,130 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:20:48,131 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5283
[2023-11-29 06:20:48,133 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:20:48,133 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:20:48,134 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 705.7142857142857) internal successors, (4940), 7 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:48,134 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:20:48,244 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5285
[2023-11-29 06:20:48,244 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:20:48,245 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:20:48,303 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0
[2023-11-29 06:20:48,445 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:48,445 INFO  L420      AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:20:48,446 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:20:48,446 INFO  L85        PathProgramCache]: Analyzing trace with hash 970389301, now seen corresponding path program 1 times
[2023-11-29 06:20:48,446 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:20:48,446 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190530006]
[2023-11-29 06:20:48,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:48,447 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:20:48,811 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:20:48,811 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479279108]
[2023-11-29 06:20:48,812 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:48,812 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:48,812 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:20:48,813 INFO  L229       MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:20:48,813 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process
[2023-11-29 06:20:53,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:20:54,072 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23401 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:20:54,129 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:20:54,351 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked.
[2023-11-29 06:20:54,351 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:20:54,351 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:20:54,351 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190530006]
[2023-11-29 06:20:54,351 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:20:54,352 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479279108]
[2023-11-29 06:20:54,352 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479279108] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:20:54,352 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:20:54,353 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:20:54,353 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892391183]
[2023-11-29 06:20:54,353 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:20:54,356 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:20:54,356 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:20:54,358 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:20:54,358 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:20:54,359 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 617.375) internal successors, (4939), 8 states have internal predecessors, (4939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:54,811 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:20:54,812 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:20:54,812 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:20:54,813 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 617.375) internal successors, (4939), 8 states have internal predecessors, (4939), 0 states have call successors, (0), 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 5284
[2023-11-29 06:20:54,816 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:20:54,827 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:20:54,827 INFO  L226             Difference]: Without dead ends: 15151
[2023-11-29 06:20:54,832 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5292 GetRequests, 5280 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:20:54,833 INFO  L413           NwaCegarLoop]: 12770 mSDtfsCounter, 33307 mSDsluCounter, 61399 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33307 SdHoareTripleChecker+Valid, 74169 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:20:54,833 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33307 Valid, 74169 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:20:54,843 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15151 states.
[2023-11-29 06:20:54,914 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15151 to 8281.
[2023-11-29 06:20:54,920 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:54,929 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:20:54,929 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5284
[2023-11-29 06:20:54,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:20:54,932 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:20:54,933 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 617.375) internal successors, (4939), 8 states have internal predecessors, (4939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:20:54,933 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:20:55,148 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5286
[2023-11-29 06:20:55,148 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:20:55,149 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:20:55,208 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0
[2023-11-29 06:20:55,349 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99
[2023-11-29 06:20:55,350 INFO  L420      AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:20:55,350 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:20:55,351 INFO  L85        PathProgramCache]: Analyzing trace with hash 1651456087, now seen corresponding path program 1 times
[2023-11-29 06:20:55,351 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:20:55,351 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397723717]
[2023-11-29 06:20:55,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:55,351 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:20:55,716 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:20:55,716 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701696641]
[2023-11-29 06:20:55,717 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:20:55,717 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:20:55,717 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:20:55,718 INFO  L229       MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:20:55,718 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process
[2023-11-29 06:21:00,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:21:00,904 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23404 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:21:00,961 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:21:01,194 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked.
[2023-11-29 06:21:01,194 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:21:01,194 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:21:01,194 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397723717]
[2023-11-29 06:21:01,194 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:21:01,194 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701696641]
[2023-11-29 06:21:01,195 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701696641] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:21:01,195 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:21:01,196 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:21:01,196 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758387119]
[2023-11-29 06:21:01,196 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:21:01,199 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:21:01,199 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:21:01,200 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:21:01,201 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:21:01,201 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 617.125) internal successors, (4937), 8 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:01,690 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:21:01,690 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:21:01,691 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:21:01,692 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 617.125) internal successors, (4937), 8 states have internal predecessors, (4937), 0 states have call successors, (0), 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 5285
[2023-11-29 06:21:01,695 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:21:01,706 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:21:01,706 INFO  L226             Difference]: Without dead ends: 15160
[2023-11-29 06:21:01,711 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5293 GetRequests, 5281 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:21:01,711 INFO  L413           NwaCegarLoop]: 12785 mSDtfsCounter, 33304 mSDsluCounter, 62962 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33304 SdHoareTripleChecker+Valid, 75747 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:21:01,712 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33304 Valid, 75747 Invalid, 63 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:21:01,723 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15160 states.
[2023-11-29 06:21:01,793 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15160 to 8281.
[2023-11-29 06:21:01,799 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:01,808 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:21:01,808 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5285
[2023-11-29 06:21:01,811 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:21:01,811 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:21:01,812 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 617.125) internal successors, (4937), 8 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:01,812 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:21:01,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5287
[2023-11-29 06:21:01,921 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:21:01,922 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:21:01,981 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0
[2023-11-29 06:21:02,122 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:02,123 INFO  L420      AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:21:02,123 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:21:02,123 INFO  L85        PathProgramCache]: Analyzing trace with hash -836693987, now seen corresponding path program 1 times
[2023-11-29 06:21:02,123 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:21:02,123 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583638630]
[2023-11-29 06:21:02,124 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:02,124 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:21:02,487 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:21:02,487 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011049586]
[2023-11-29 06:21:02,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:02,488 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:02,488 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:21:02,489 INFO  L229       MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:21:02,490 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process
[2023-11-29 06:21:07,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:21:07,606 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23408 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:21:07,663 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:21:07,895 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked.
[2023-11-29 06:21:07,895 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:21:07,895 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:21:07,895 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583638630]
[2023-11-29 06:21:07,895 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:21:07,895 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011049586]
[2023-11-29 06:21:07,895 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011049586] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:21:07,895 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:21:07,897 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:21:07,897 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146943777]
[2023-11-29 06:21:07,897 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:21:07,900 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:21:07,900 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:21:07,902 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:21:07,902 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:21:07,903 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 617.0) internal successors, (4936), 8 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:08,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:21:08,398 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:21:08,398 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:21:08,399 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 617.0) internal successors, (4936), 8 states have internal predecessors, (4936), 0 states have call successors, (0), 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 5286
[2023-11-29 06:21:08,403 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:21:08,414 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:21:08,414 INFO  L226             Difference]: Without dead ends: 15166
[2023-11-29 06:21:08,419 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5294 GetRequests, 5282 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:21:08,419 INFO  L413           NwaCegarLoop]: 12795 mSDtfsCounter, 33300 mSDsluCounter, 61483 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33300 SdHoareTripleChecker+Valid, 74278 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:21:08,420 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33300 Valid, 74278 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:21:08,430 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15166 states.
[2023-11-29 06:21:08,501 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15166 to 8281.
[2023-11-29 06:21:08,508 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:08,517 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:21:08,517 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5286
[2023-11-29 06:21:08,519 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:21:08,519 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:21:08,520 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 617.0) internal successors, (4936), 8 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:08,520 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:21:08,773 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5288
[2023-11-29 06:21:08,773 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:21:08,774 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:21:08,834 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0
[2023-11-29 06:21:08,974 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101
[2023-11-29 06:21:08,974 INFO  L420      AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:21:08,975 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:21:08,975 INFO  L85        PathProgramCache]: Analyzing trace with hash -1763111467, now seen corresponding path program 1 times
[2023-11-29 06:21:08,975 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:21:08,975 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468590753]
[2023-11-29 06:21:08,976 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:08,976 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:21:09,339 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:21:09,340 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112320910]
[2023-11-29 06:21:09,340 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:09,341 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:09,341 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:21:09,341 INFO  L229       MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:21:09,342 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process
[2023-11-29 06:21:14,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:21:14,671 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23411 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:21:14,729 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:21:14,955 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked.
[2023-11-29 06:21:14,955 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:21:14,955 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:21:14,955 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468590753]
[2023-11-29 06:21:14,955 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:21:14,955 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112320910]
[2023-11-29 06:21:14,955 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [112320910] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:21:14,955 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:21:14,957 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:21:14,957 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280310354]
[2023-11-29 06:21:14,957 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:21:14,960 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:21:14,960 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:21:14,961 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:21:14,962 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:21:14,962 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 616.875) internal successors, (4935), 8 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:15,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:21:15,446 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:21:15,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:21:15,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 616.875) internal successors, (4935), 8 states have internal predecessors, (4935), 0 states have call successors, (0), 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 5287
[2023-11-29 06:21:15,451 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:21:15,464 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:21:15,464 INFO  L226             Difference]: Without dead ends: 15172
[2023-11-29 06:21:15,472 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5295 GetRequests, 5283 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:21:15,472 INFO  L413           NwaCegarLoop]: 12805 mSDtfsCounter, 33296 mSDsluCounter, 63042 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33296 SdHoareTripleChecker+Valid, 75847 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:21:15,472 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33296 Valid, 75847 Invalid, 63 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:21:15,483 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15172 states.
[2023-11-29 06:21:15,553 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15172 to 8281.
[2023-11-29 06:21:15,560 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:15,568 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:21:15,568 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5287
[2023-11-29 06:21:15,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:21:15,571 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:21:15,572 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 616.875) internal successors, (4935), 8 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:15,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:21:15,681 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5289
[2023-11-29 06:21:15,681 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:21:15,682 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:21:15,741 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0
[2023-11-29 06:21:15,883 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102
[2023-11-29 06:21:15,883 INFO  L420      AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:21:15,883 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:21:15,884 INFO  L85        PathProgramCache]: Analyzing trace with hash 146328799, now seen corresponding path program 1 times
[2023-11-29 06:21:15,884 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:21:15,884 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146305553]
[2023-11-29 06:21:15,884 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:15,884 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:21:16,248 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:21:16,248 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395188130]
[2023-11-29 06:21:16,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:16,249 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:16,249 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:21:16,250 INFO  L229       MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:21:16,251 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process
[2023-11-29 06:21:21,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:21:21,539 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23415 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:21:21,598 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:21:21,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked.
[2023-11-29 06:21:21,821 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:21:21,821 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:21:21,821 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146305553]
[2023-11-29 06:21:21,821 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:21:21,821 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395188130]
[2023-11-29 06:21:21,821 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395188130] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:21:21,821 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:21:21,822 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:21:21,822 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874940534]
[2023-11-29 06:21:21,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:21:21,824 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:21:21,824 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:21:21,826 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:21:21,826 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:21:21,827 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 616.75) internal successors, (4934), 8 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:22,290 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:21:22,291 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:21:22,291 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:21:22,292 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 616.75) internal successors, (4934), 8 states have internal predecessors, (4934), 0 states have call successors, (0), 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 5288
[2023-11-29 06:21:22,295 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:21:22,306 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:21:22,306 INFO  L226             Difference]: Without dead ends: 15178
[2023-11-29 06:21:22,312 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5296 GetRequests, 5284 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:21:22,312 INFO  L413           NwaCegarLoop]: 12815 mSDtfsCounter, 33292 mSDsluCounter, 61549 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33292 SdHoareTripleChecker+Valid, 74364 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:21:22,312 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33292 Valid, 74364 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:21:22,323 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15178 states.
[2023-11-29 06:21:22,393 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15178 to 8281.
[2023-11-29 06:21:22,400 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:22,409 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:21:22,409 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5288
[2023-11-29 06:21:22,411 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:21:22,411 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:21:22,412 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 616.75) internal successors, (4934), 8 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:22,412 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:21:22,655 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5290
[2023-11-29 06:21:22,655 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:21:22,656 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:21:22,715 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0
[2023-11-29 06:21:22,856 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103
[2023-11-29 06:21:22,857 INFO  L420      AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:21:22,857 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:21:22,858 INFO  L85        PathProgramCache]: Analyzing trace with hash -542441133, now seen corresponding path program 1 times
[2023-11-29 06:21:22,858 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:21:22,858 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839215995]
[2023-11-29 06:21:22,858 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:22,858 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:21:23,224 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:21:23,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512755675]
[2023-11-29 06:21:23,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:23,225 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:23,225 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:21:23,226 INFO  L229       MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:21:23,226 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process
[2023-11-29 06:21:28,245 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:21:28,388 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23418 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:21:28,445 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:21:28,690 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2023-11-29 06:21:28,691 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:21:28,691 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:21:28,691 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839215995]
[2023-11-29 06:21:28,691 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:21:28,691 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512755675]
[2023-11-29 06:21:28,691 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [512755675] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:21:28,691 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:21:28,692 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:21:28,693 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812562326]
[2023-11-29 06:21:28,693 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:21:28,695 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:21:28,695 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:21:28,697 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:21:28,697 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:21:28,698 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 616.625) internal successors, (4933), 8 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:29,174 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:21:29,174 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:21:29,174 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:21:29,175 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 616.625) internal successors, (4933), 8 states have internal predecessors, (4933), 0 states have call successors, (0), 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 5289
[2023-11-29 06:21:29,179 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:21:29,189 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:21:29,189 INFO  L226             Difference]: Without dead ends: 15184
[2023-11-29 06:21:29,195 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5297 GetRequests, 5285 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:21:29,195 INFO  L413           NwaCegarLoop]: 12825 mSDtfsCounter, 33288 mSDsluCounter, 61582 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33288 SdHoareTripleChecker+Valid, 74407 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:21:29,196 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33288 Valid, 74407 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:21:29,206 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15184 states.
[2023-11-29 06:21:29,277 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15184 to 8281.
[2023-11-29 06:21:29,284 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:29,293 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:21:29,293 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5289
[2023-11-29 06:21:29,295 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:21:29,295 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:21:29,296 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 616.625) internal successors, (4933), 8 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:29,296 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:21:29,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5291
[2023-11-29 06:21:29,406 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:21:29,407 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:21:29,465 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0
[2023-11-29 06:21:29,607 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104
[2023-11-29 06:21:29,607 INFO  L420      AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:21:29,608 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:21:29,608 INFO  L85        PathProgramCache]: Analyzing trace with hash 978144161, now seen corresponding path program 1 times
[2023-11-29 06:21:29,608 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:21:29,608 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307264696]
[2023-11-29 06:21:29,609 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:29,609 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:21:29,973 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:21:29,973 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886157669]
[2023-11-29 06:21:29,974 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:29,974 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:29,974 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:21:29,975 INFO  L229       MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:21:29,976 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process
[2023-11-29 06:21:34,979 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:21:35,129 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23422 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:21:35,187 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:21:35,421 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked.
[2023-11-29 06:21:35,422 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:21:35,422 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:21:35,422 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307264696]
[2023-11-29 06:21:35,422 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:21:35,422 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886157669]
[2023-11-29 06:21:35,422 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [886157669] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:21:35,422 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:21:35,424 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:21:35,424 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918179626]
[2023-11-29 06:21:35,424 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:21:35,426 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:21:35,426 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:21:35,428 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:21:35,428 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:21:35,429 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 616.5) internal successors, (4932), 8 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:35,912 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:21:35,912 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:21:35,912 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:21:35,913 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 616.5) internal successors, (4932), 8 states have internal predecessors, (4932), 0 states have call successors, (0), 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 5290
[2023-11-29 06:21:35,916 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:21:35,927 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:21:35,927 INFO  L226             Difference]: Without dead ends: 15190
[2023-11-29 06:21:35,933 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5298 GetRequests, 5286 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:21:35,933 INFO  L413           NwaCegarLoop]: 12835 mSDtfsCounter, 33284 mSDsluCounter, 63162 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33284 SdHoareTripleChecker+Valid, 75997 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:21:35,933 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33284 Valid, 75997 Invalid, 63 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:21:35,943 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15190 states.
[2023-11-29 06:21:36,014 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15190 to 8281.
[2023-11-29 06:21:36,021 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:36,030 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:21:36,030 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5290
[2023-11-29 06:21:36,032 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:21:36,033 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:21:36,033 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 616.5) internal successors, (4932), 8 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:36,034 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:21:36,285 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5292
[2023-11-29 06:21:36,286 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:21:36,287 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:21:36,349 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0
[2023-11-29 06:21:36,487 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105
[2023-11-29 06:21:36,487 INFO  L420      AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:21:36,488 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:21:36,488 INFO  L85        PathProgramCache]: Analyzing trace with hash -1471778095, now seen corresponding path program 1 times
[2023-11-29 06:21:36,488 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:21:36,488 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132495092]
[2023-11-29 06:21:36,489 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:36,489 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:21:36,854 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:21:36,854 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92865655]
[2023-11-29 06:21:36,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:36,855 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:36,855 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:21:36,856 INFO  L229       MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:21:36,856 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process
[2023-11-29 06:21:41,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:21:41,973 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23425 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:21:42,030 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:21:42,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked.
[2023-11-29 06:21:42,263 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:21:42,263 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:21:42,263 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132495092]
[2023-11-29 06:21:42,263 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:21:42,264 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92865655]
[2023-11-29 06:21:42,264 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [92865655] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:21:42,264 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:21:42,265 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:21:42,265 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827423961]
[2023-11-29 06:21:42,265 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:21:42,268 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:21:42,268 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:21:42,270 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:21:42,271 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:21:42,271 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 616.375) internal successors, (4931), 8 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:42,754 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:21:42,754 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:21:42,754 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:21:42,755 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 616.375) internal successors, (4931), 8 states have internal predecessors, (4931), 0 states have call successors, (0), 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 5291
[2023-11-29 06:21:42,758 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:21:42,769 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:21:42,769 INFO  L226             Difference]: Without dead ends: 15196
[2023-11-29 06:21:42,775 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5299 GetRequests, 5287 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:21:42,775 INFO  L413           NwaCegarLoop]: 12845 mSDtfsCounter, 33280 mSDsluCounter, 63202 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33280 SdHoareTripleChecker+Valid, 76047 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:21:42,775 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33280 Valid, 76047 Invalid, 63 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:21:42,786 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15196 states.
[2023-11-29 06:21:42,856 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15196 to 8281.
[2023-11-29 06:21:42,863 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:42,872 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:21:42,872 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5291
[2023-11-29 06:21:42,875 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:21:42,875 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:21:42,876 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 616.375) internal successors, (4931), 8 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:42,876 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:21:42,985 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5293
[2023-11-29 06:21:42,985 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:21:42,986 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:21:43,045 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0
[2023-11-29 06:21:43,186 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106
[2023-11-29 06:21:43,187 INFO  L420      AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:21:43,187 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:21:43,188 INFO  L85        PathProgramCache]: Analyzing trace with hash -228512669, now seen corresponding path program 1 times
[2023-11-29 06:21:43,188 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:21:43,188 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448330228]
[2023-11-29 06:21:43,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:43,188 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:21:43,558 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:21:43,558 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690801194]
[2023-11-29 06:21:43,559 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:43,559 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:43,559 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:21:43,560 INFO  L229       MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:21:43,560 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process
[2023-11-29 06:21:48,717 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:21:48,860 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23429 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:21:48,916 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:21:49,161 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked.
[2023-11-29 06:21:49,161 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:21:49,161 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:21:49,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448330228]
[2023-11-29 06:21:49,161 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:21:49,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690801194]
[2023-11-29 06:21:49,162 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690801194] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:21:49,162 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:21:49,162 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:21:49,162 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362628631]
[2023-11-29 06:21:49,162 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:21:49,165 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:21:49,165 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:21:49,166 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:21:49,167 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:21:49,167 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 616.25) internal successors, (4930), 8 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:49,639 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:21:49,639 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:21:49,639 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:21:49,640 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 616.25) internal successors, (4930), 8 states have internal predecessors, (4930), 0 states have call successors, (0), 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 5292
[2023-11-29 06:21:49,644 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:21:49,655 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:21:49,655 INFO  L226             Difference]: Without dead ends: 15202
[2023-11-29 06:21:49,661 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5300 GetRequests, 5288 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:21:49,661 INFO  L413           NwaCegarLoop]: 12855 mSDtfsCounter, 33276 mSDsluCounter, 61681 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33276 SdHoareTripleChecker+Valid, 74536 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:21:49,661 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33276 Valid, 74536 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:21:49,672 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15202 states.
[2023-11-29 06:21:49,743 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15202 to 8281.
[2023-11-29 06:21:49,750 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:49,758 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:21:49,758 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5292
[2023-11-29 06:21:49,761 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:21:49,761 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:21:49,762 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 616.25) internal successors, (4930), 8 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:49,762 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:21:50,053 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5294
[2023-11-29 06:21:50,053 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:21:50,054 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:21:50,113 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0
[2023-11-29 06:21:50,254 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:50,255 INFO  L420      AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:21:50,255 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:21:50,255 INFO  L85        PathProgramCache]: Analyzing trace with hash -1492336049, now seen corresponding path program 1 times
[2023-11-29 06:21:50,255 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:21:50,256 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781116059]
[2023-11-29 06:21:50,256 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:50,256 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:21:50,622 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:21:50,622 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045662829]
[2023-11-29 06:21:50,623 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:50,623 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:50,623 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:21:50,624 INFO  L229       MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:21:50,625 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process
[2023-11-29 06:21:55,774 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:21:55,918 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23432 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:21:55,975 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:21:56,205 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked.
[2023-11-29 06:21:56,205 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:21:56,205 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:21:56,205 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781116059]
[2023-11-29 06:21:56,205 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:21:56,205 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045662829]
[2023-11-29 06:21:56,206 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045662829] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:21:56,206 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:21:56,207 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:21:56,207 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722523266]
[2023-11-29 06:21:56,207 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:21:56,210 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:21:56,210 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:21:56,214 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:21:56,214 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:21:56,215 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 616.125) internal successors, (4929), 8 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:56,674 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:21:56,674 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:21:56,675 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:21:56,676 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 616.125) internal successors, (4929), 8 states have internal predecessors, (4929), 0 states have call successors, (0), 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 5293
[2023-11-29 06:21:56,679 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:21:56,690 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:21:56,690 INFO  L226             Difference]: Without dead ends: 15208
[2023-11-29 06:21:56,696 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5301 GetRequests, 5289 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:21:56,696 INFO  L413           NwaCegarLoop]: 12865 mSDtfsCounter, 33272 mSDsluCounter, 61714 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33272 SdHoareTripleChecker+Valid, 74579 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:21:56,696 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33272 Valid, 74579 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:21:56,707 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15208 states.
[2023-11-29 06:21:56,777 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15208 to 8281.
[2023-11-29 06:21:56,784 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:56,793 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:21:56,793 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5293
[2023-11-29 06:21:56,795 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:21:56,795 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:21:56,796 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 616.125) internal successors, (4929), 8 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:21:56,796 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:21:56,906 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5295
[2023-11-29 06:21:56,906 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:21:56,907 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:21:56,968 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0
[2023-11-29 06:21:57,107 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:57,108 INFO  L420      AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:21:57,108 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:21:57,108 INFO  L85        PathProgramCache]: Analyzing trace with hash 1337397029, now seen corresponding path program 1 times
[2023-11-29 06:21:57,109 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:21:57,109 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979892272]
[2023-11-29 06:21:57,110 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:57,110 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:21:57,475 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:21:57,475 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209282811]
[2023-11-29 06:21:57,476 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:21:57,476 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:21:57,476 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:21:57,477 INFO  L229       MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:21:57,477 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process
[2023-11-29 06:22:02,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:22:02,565 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23436 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:22:02,621 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:22:02,852 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked.
[2023-11-29 06:22:02,852 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:22:02,852 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:22:02,852 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979892272]
[2023-11-29 06:22:02,852 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:22:02,852 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209282811]
[2023-11-29 06:22:02,852 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [209282811] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:22:02,852 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:22:02,854 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:22:02,854 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660542355]
[2023-11-29 06:22:02,854 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:22:02,857 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:22:02,857 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:22:02,859 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:22:02,859 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:22:02,860 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:03,339 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:22:03,339 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:22:03,339 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:22:03,340 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 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 5294
[2023-11-29 06:22:03,343 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:22:03,354 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:22:03,354 INFO  L226             Difference]: Without dead ends: 15214
[2023-11-29 06:22:03,360 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5302 GetRequests, 5290 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:22:03,360 INFO  L413           NwaCegarLoop]: 12875 mSDtfsCounter, 33268 mSDsluCounter, 63322 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33268 SdHoareTripleChecker+Valid, 76197 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:22:03,360 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33268 Valid, 76197 Invalid, 63 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:22:03,371 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15214 states.
[2023-11-29 06:22:03,442 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15214 to 8281.
[2023-11-29 06:22:03,448 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:03,457 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:22:03,457 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5294
[2023-11-29 06:22:03,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:22:03,460 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:22:03,461 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:03,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:22:03,744 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5296
[2023-11-29 06:22:03,744 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:22:03,745 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:22:03,804 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0
[2023-11-29 06:22:03,946 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:22:03,946 INFO  L420      AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:22:03,946 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:22:03,947 INFO  L85        PathProgramCache]: Analyzing trace with hash -888188979, now seen corresponding path program 1 times
[2023-11-29 06:22:03,947 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:22:03,947 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934850082]
[2023-11-29 06:22:03,947 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:03,948 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:22:04,311 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:22:04,311 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477608224]
[2023-11-29 06:22:04,312 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:04,312 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:22:04,312 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:22:04,313 INFO  L229       MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:22:04,314 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process
[2023-11-29 06:22:09,417 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:22:09,560 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23439 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:22:09,618 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:22:09,838 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked.
[2023-11-29 06:22:09,838 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:22:09,838 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:22:09,838 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934850082]
[2023-11-29 06:22:09,838 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:22:09,839 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477608224]
[2023-11-29 06:22:09,839 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [477608224] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:22:09,839 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:22:09,840 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:22:09,840 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535268086]
[2023-11-29 06:22:09,840 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:22:09,843 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:22:09,843 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:22:09,845 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:22:09,845 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:22:09,846 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 615.875) internal successors, (4927), 8 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:10,306 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:22:10,306 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:22:10,307 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:22:10,308 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 615.875) internal successors, (4927), 8 states have internal predecessors, (4927), 0 states have call successors, (0), 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 5295
[2023-11-29 06:22:10,311 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:22:10,322 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:22:10,322 INFO  L226             Difference]: Without dead ends: 15220
[2023-11-29 06:22:10,328 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5303 GetRequests, 5291 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:22:10,328 INFO  L413           NwaCegarLoop]: 12885 mSDtfsCounter, 33264 mSDsluCounter, 61780 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33264 SdHoareTripleChecker+Valid, 74665 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:22:10,328 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33264 Valid, 74665 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:22:10,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15220 states.
[2023-11-29 06:22:10,411 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15220 to 8281.
[2023-11-29 06:22:10,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:10,426 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:22:10,426 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5295
[2023-11-29 06:22:10,429 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:22:10,429 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:22:10,430 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 615.875) internal successors, (4927), 8 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:10,430 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:22:10,721 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5297
[2023-11-29 06:22:10,721 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:22:10,722 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:22:10,781 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0
[2023-11-29 06:22:10,923 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:22:10,923 INFO  L420      AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:22:10,923 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:22:10,924 INFO  L85        PathProgramCache]: Analyzing trace with hash 1381077991, now seen corresponding path program 1 times
[2023-11-29 06:22:10,924 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:22:10,924 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982592047]
[2023-11-29 06:22:10,924 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:10,924 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:22:11,288 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:22:11,288 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851958740]
[2023-11-29 06:22:11,289 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:11,289 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:22:11,289 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:22:11,290 INFO  L229       MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:22:11,291 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process
[2023-11-29 06:22:16,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:22:16,789 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23443 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:22:16,848 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:22:17,077 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2023-11-29 06:22:17,077 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:22:17,077 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:22:17,077 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982592047]
[2023-11-29 06:22:17,077 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:22:17,077 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851958740]
[2023-11-29 06:22:17,077 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851958740] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:22:17,077 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:22:17,079 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:22:17,079 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084224356]
[2023-11-29 06:22:17,079 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:22:17,082 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:22:17,082 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:22:17,084 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:22:17,084 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:22:17,085 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 615.75) internal successors, (4926), 8 states have internal predecessors, (4926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:17,555 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:22:17,555 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:22:17,555 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:22:17,557 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 615.75) internal successors, (4926), 8 states have internal predecessors, (4926), 0 states have call successors, (0), 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 5296
[2023-11-29 06:22:17,560 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:22:17,572 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:22:17,572 INFO  L226             Difference]: Without dead ends: 15226
[2023-11-29 06:22:17,577 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5304 GetRequests, 5292 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:22:17,578 INFO  L413           NwaCegarLoop]: 12895 mSDtfsCounter, 33260 mSDsluCounter, 61813 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33260 SdHoareTripleChecker+Valid, 74708 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:22:17,578 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33260 Valid, 74708 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:22:17,592 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15226 states.
[2023-11-29 06:22:17,675 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15226 to 8281.
[2023-11-29 06:22:17,681 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:17,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:22:17,690 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5296
[2023-11-29 06:22:17,692 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:22:17,692 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:22:17,693 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 615.75) internal successors, (4926), 8 states have internal predecessors, (4926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:17,693 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:22:17,802 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5298
[2023-11-29 06:22:17,802 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:22:17,803 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:22:17,862 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0
[2023-11-29 06:22:18,003 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111
[2023-11-29 06:22:18,004 INFO  L420      AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:22:18,004 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:22:18,005 INFO  L85        PathProgramCache]: Analyzing trace with hash 706706251, now seen corresponding path program 1 times
[2023-11-29 06:22:18,005 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:22:18,005 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629269284]
[2023-11-29 06:22:18,006 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:18,006 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:22:18,369 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:22:18,370 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897487117]
[2023-11-29 06:22:18,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:18,371 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:22:18,371 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:22:18,371 INFO  L229       MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:22:18,372 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process
[2023-11-29 06:22:23,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:22:23,513 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23446 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:22:23,580 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:22:23,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked.
[2023-11-29 06:22:23,815 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:22:23,815 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:22:23,815 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629269284]
[2023-11-29 06:22:23,815 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:22:23,815 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897487117]
[2023-11-29 06:22:23,815 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897487117] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:22:23,815 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:22:23,817 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:22:23,817 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451749418]
[2023-11-29 06:22:23,817 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:22:23,819 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:22:23,820 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:22:23,822 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:22:23,822 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:22:23,823 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 615.625) internal successors, (4925), 8 states have internal predecessors, (4925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:24,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:22:24,292 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:22:24,292 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:22:24,293 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 615.625) internal successors, (4925), 8 states have internal predecessors, (4925), 0 states have call successors, (0), 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 5297
[2023-11-29 06:22:24,297 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:22:24,310 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:22:24,310 INFO  L226             Difference]: Without dead ends: 15232
[2023-11-29 06:22:24,316 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5305 GetRequests, 5293 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:22:24,316 INFO  L413           NwaCegarLoop]: 12905 mSDtfsCounter, 33256 mSDsluCounter, 61846 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33256 SdHoareTripleChecker+Valid, 74751 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:22:24,316 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33256 Valid, 74751 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:22:24,327 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15232 states.
[2023-11-29 06:22:24,398 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15232 to 8281.
[2023-11-29 06:22:24,404 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:24,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:22:24,413 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5297
[2023-11-29 06:22:24,416 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:22:24,416 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:22:24,417 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 615.625) internal successors, (4925), 8 states have internal predecessors, (4925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:24,417 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:22:24,686 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5299
[2023-11-29 06:22:24,686 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:22:24,687 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:22:24,746 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0
[2023-11-29 06:22:24,888 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112
[2023-11-29 06:22:24,888 INFO  L420      AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:22:24,888 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:22:24,889 INFO  L85        PathProgramCache]: Analyzing trace with hash 762534569, now seen corresponding path program 1 times
[2023-11-29 06:22:24,890 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:22:24,890 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806717594]
[2023-11-29 06:22:24,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:24,891 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:22:25,264 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:22:25,264 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281289679]
[2023-11-29 06:22:25,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:25,265 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:22:25,265 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:22:25,266 INFO  L229       MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:22:25,267 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process
[2023-11-29 06:22:30,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:22:30,588 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23450 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:22:30,645 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:22:30,865 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked.
[2023-11-29 06:22:30,865 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:22:30,865 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:22:30,865 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806717594]
[2023-11-29 06:22:30,865 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:22:30,865 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281289679]
[2023-11-29 06:22:30,866 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [281289679] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:22:30,866 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:22:30,867 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:22:30,867 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115337974]
[2023-11-29 06:22:30,867 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:22:30,870 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:22:30,870 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:22:30,872 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:22:30,872 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:22:30,873 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 7 states, 7 states have (on average 703.2857142857143) internal successors, (4923), 7 states have internal predecessors, (4923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:31,289 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:22:31,289 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:22:31,289 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:22:31,291 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 703.2857142857143) internal successors, (4923), 7 states have internal predecessors, (4923), 0 states have call successors, (0), 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 5298
[2023-11-29 06:22:31,294 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:22:31,305 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:22:31,305 INFO  L226             Difference]: Without dead ends: 15241
[2023-11-29 06:22:31,311 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5306 GetRequests, 5295 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 06:22:31,311 INFO  L413           NwaCegarLoop]: 12920 mSDtfsCounter, 33253 mSDsluCounter, 50591 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33253 SdHoareTripleChecker+Valid, 63511 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:22:31,311 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33253 Valid, 63511 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:22:31,322 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15241 states.
[2023-11-29 06:22:31,393 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15241 to 8281.
[2023-11-29 06:22:31,400 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:31,408 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:22:31,408 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5298
[2023-11-29 06:22:31,411 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:22:31,411 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:22:31,412 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 703.2857142857143) internal successors, (4923), 7 states have internal predecessors, (4923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:31,412 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:22:31,522 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5300
[2023-11-29 06:22:31,522 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:22:31,523 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:22:31,582 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0
[2023-11-29 06:22:31,723 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113
[2023-11-29 06:22:31,723 INFO  L420      AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:22:31,724 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:22:31,724 INFO  L85        PathProgramCache]: Analyzing trace with hash -480971345, now seen corresponding path program 1 times
[2023-11-29 06:22:31,724 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:22:31,724 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341349214]
[2023-11-29 06:22:31,725 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:31,726 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:22:32,091 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:22:32,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983653992]
[2023-11-29 06:22:32,092 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:32,092 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:22:32,092 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:22:32,093 INFO  L229       MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:22:32,094 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process
[2023-11-29 06:22:37,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:22:37,440 INFO  L262         TraceCheckSpWp]: Trace formula consists of 23453 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:22:37,497 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:22:37,753 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked.
[2023-11-29 06:22:37,754 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:22:37,754 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:22:37,754 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341349214]
[2023-11-29 06:22:37,754 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:22:37,754 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983653992]
[2023-11-29 06:22:37,754 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [983653992] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:22:37,754 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:22:37,755 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:22:37,755 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748181307]
[2023-11-29 06:22:37,755 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:22:37,757 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:22:37,757 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:22:37,759 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:22:37,759 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:22:37,760 INFO  L87              Difference]: Start difference. First operand 8281 states and 13711 transitions. Second operand  has 8 states, 8 states have (on average 615.25) internal successors, (4922), 8 states have internal predecessors, (4922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:38,234 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:22:38,234 INFO  L93              Difference]: Finished difference Result 22640 states and 37463 transitions.
[2023-11-29 06:22:38,234 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 06:22:38,235 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 615.25) internal successors, (4922), 8 states have internal predecessors, (4922), 0 states have call successors, (0), 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 5299
[2023-11-29 06:22:38,239 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:22:38,250 INFO  L225             Difference]: With dead ends: 22640
[2023-11-29 06:22:38,250 INFO  L226             Difference]: Without dead ends: 15247
[2023-11-29 06:22:38,255 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5307 GetRequests, 5295 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:22:38,255 INFO  L413           NwaCegarLoop]: 12930 mSDtfsCounter, 33249 mSDsluCounter, 63542 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33249 SdHoareTripleChecker+Valid, 76472 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:22:38,255 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33249 Valid, 76472 Invalid, 63 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:22:38,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15247 states.
[2023-11-29 06:22:38,338 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15247 to 8281.
[2023-11-29 06:22:38,344 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8281 states, 8280 states have (on average 1.6559178743961354) internal successors, (13711), 8280 states have internal predecessors, (13711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:38,353 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 13711 transitions.
[2023-11-29 06:22:38,353 INFO  L78                 Accepts]: Start accepts. Automaton has 8281 states and 13711 transitions. Word has length 5299
[2023-11-29 06:22:38,356 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:22:38,356 INFO  L495      AbstractCegarLoop]: Abstraction has 8281 states and 13711 transitions.
[2023-11-29 06:22:38,357 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 615.25) internal successors, (4922), 8 states have internal predecessors, (4922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:22:38,357 INFO  L276                IsEmpty]: Start isEmpty. Operand 8281 states and 13711 transitions.
[2023-11-29 06:22:38,622 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5301
[2023-11-29 06:22:38,622 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:22:38,623 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:22:38,681 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0
[2023-11-29 06:22:38,823 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114
[2023-11-29 06:22:38,823 INFO  L420      AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:22:38,824 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:22:38,824 INFO  L85        PathProgramCache]: Analyzing trace with hash -540104083, now seen corresponding path program 1 times
[2023-11-29 06:22:38,824 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:22:38,824 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89738359]
[2023-11-29 06:22:38,825 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:38,825 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:22:39,191 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:22:39,191 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497929769]
[2023-11-29 06:22:39,192 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:22:39,192 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:22:39,193 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:22:39,193 INFO  L229       MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:22:39,194 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5ecf93-fa29-4deb-aa36-0905dd8c169e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process