./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product22.cil.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme --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 32bit --witnessprinter.graph.data.programhash 0fc665e3899dd29ca5bf696fac98a46e2d1733c214ee43bc57c8fd7a101d2539
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-26 10:42:07,232 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-26 10:42:07,337 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-26 10:42:07,343 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-26 10:42:07,344 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-26 10:42:07,374 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-26 10:42:07,375 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-26 10:42:07,376 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-26 10:42:07,376 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-26 10:42:07,377 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-26 10:42:07,378 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-26 10:42:07,378 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-26 10:42:07,379 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-26 10:42:07,380 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-26 10:42:07,381 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-26 10:42:07,382 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-26 10:42:07,382 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-26 10:42:07,383 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-26 10:42:07,384 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-26 10:42:07,384 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-26 10:42:07,385 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-26 10:42:07,386 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-26 10:42:07,386 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-26 10:42:07,387 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-26 10:42:07,387 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-26 10:42:07,388 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-26 10:42:07,388 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-26 10:42:07,389 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-26 10:42:07,389 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-26 10:42:07,390 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-26 10:42:07,390 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-26 10:42:07,391 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-26 10:42:07,391 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-26 10:42:07,392 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-26 10:42:07,393 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-26 10:42:07,393 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-26 10:42:07,394 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-26 10:42:07,394 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-26 10:42:07,395 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-26 10:42:07,396 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-26 10:42:07,396 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-26 10:42:07,397 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-26 10:42:07,398 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_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/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_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme
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 -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fc665e3899dd29ca5bf696fac98a46e2d1733c214ee43bc57c8fd7a101d2539
[2023-11-26 10:42:07,679 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-26 10:42:07,723 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-26 10:42:07,726 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-26 10:42:07,731 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-26 10:42:07,731 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-26 10:42:07,733 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/email_spec9_product22.cil.c
[2023-11-26 10:42:10,964 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-26 10:42:11,328 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-26 10:42:11,329 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/sv-benchmarks/c/product-lines/email_spec9_product22.cil.c
[2023-11-26 10:42:11,355 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/data/cd688694c/3dbfe5a12d76427a8792d4a072ea0b06/FLAG2b40259b7
[2023-11-26 10:42:11,369 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/data/cd688694c/3dbfe5a12d76427a8792d4a072ea0b06
[2023-11-26 10:42:11,371 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-26 10:42:11,373 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-26 10:42:11,375 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-26 10:42:11,375 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-26 10:42:11,380 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-26 10:42:11,380 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:11" (1/1) ...
[2023-11-26 10:42:11,381 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ff9438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:11, skipping insertion in model container
[2023-11-26 10:42:11,382 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:11" (1/1) ...
[2023-11-26 10:42:11,458 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-26 10:42:12,184 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_7991473b-c454-4ee1-bdbd-c98d87514d51/sv-benchmarks/c/product-lines/email_spec9_product22.cil.c[51984,51997]
[2023-11-26 10:42:12,231 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-26 10:42:12,252 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-26 10:42:12,263 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48]
[2023-11-26 10:42:12,265 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [172]
[2023-11-26 10:42:12,265 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1252]
[2023-11-26 10:42:12,266 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1481]
[2023-11-26 10:42:12,266 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1886]
[2023-11-26 10:42:12,266 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2191]
[2023-11-26 10:42:12,267 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2479]
[2023-11-26 10:42:12,267 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2488]
[2023-11-26 10:42:12,268 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptForward_spec.i","") [2854]
[2023-11-26 10:42:12,268 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2896]
[2023-11-26 10:42:12,270 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2913]
[2023-11-26 10:42:12,399 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_7991473b-c454-4ee1-bdbd-c98d87514d51/sv-benchmarks/c/product-lines/email_spec9_product22.cil.c[51984,51997]
[2023-11-26 10:42:12,439 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-26 10:42:12,507 WARN  L675               CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler.
[2023-11-26 10:42:12,515 INFO  L206         MainTranslator]: Completed translation
[2023-11-26 10:42:12,516 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12 WrapperNode
[2023-11-26 10:42:12,516 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-26 10:42:12,518 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-26 10:42:12,518 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-26 10:42:12,518 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-26 10:42:12,526 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,563 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,632 INFO  L138                Inliner]: procedures = 129, calls = 211, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1057
[2023-11-26 10:42:12,633 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-26 10:42:12,634 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-26 10:42:12,634 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-26 10:42:12,634 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-26 10:42:12,647 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,647 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,654 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,683 INFO  L175           MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0].
[2023-11-26 10:42:12,684 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,684 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,738 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,754 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,772 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,777 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,800 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-26 10:42:12,801 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-26 10:42:12,801 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-26 10:42:12,802 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-26 10:42:12,815 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (1/1) ...
[2023-11-26 10:42:12,826 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-26 10:42:12,842 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 10:42:12,871 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-26 10:42:12,908 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-26 10:42:12,919 INFO  L130     BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey
[2023-11-26 10:42:12,919 INFO  L138     BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey
[2023-11-26 10:42:12,920 INFO  L130     BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey
[2023-11-26 10:42:12,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey
[2023-11-26 10:42:12,920 INFO  L130     BoogieDeclarations]: Found specification of procedure getEmailTo
[2023-11-26 10:42:12,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure getEmailTo
[2023-11-26 10:42:12,921 INFO  L130     BoogieDeclarations]: Found specification of procedure setEmailFrom
[2023-11-26 10:42:12,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure setEmailFrom
[2023-11-26 10:42:12,922 INFO  L130     BoogieDeclarations]: Found specification of procedure createClientKeyringEntry
[2023-11-26 10:42:12,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry
[2023-11-26 10:42:12,923 INFO  L130     BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted
[2023-11-26 10:42:12,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted
[2023-11-26 10:42:12,923 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckKeyAdd
[2023-11-26 10:42:12,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckKeyAdd
[2023-11-26 10:42:12,925 INFO  L130     BoogieDeclarations]: Found specification of procedure puts
[2023-11-26 10:42:12,925 INFO  L130     BoogieDeclarations]: Found specification of procedure getEmailFrom
[2023-11-26 10:42:12,925 INFO  L138     BoogieDeclarations]: Found implementation of procedure getEmailFrom
[2023-11-26 10:42:12,928 INFO  L130     BoogieDeclarations]: Found specification of procedure queue
[2023-11-26 10:42:12,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure queue
[2023-11-26 10:42:12,928 INFO  L130     BoogieDeclarations]: Found specification of procedure setClientId
[2023-11-26 10:42:12,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure setClientId
[2023-11-26 10:42:12,929 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-26 10:42:12,929 INFO  L130     BoogieDeclarations]: Found specification of procedure setClientKeyringUser
[2023-11-26 10:42:12,931 INFO  L138     BoogieDeclarations]: Found implementation of procedure setClientKeyringUser
[2023-11-26 10:42:12,931 INFO  L130     BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey
[2023-11-26 10:42:12,931 INFO  L138     BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey
[2023-11-26 10:42:12,931 INFO  L130     BoogieDeclarations]: Found specification of procedure outgoing
[2023-11-26 10:42:12,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure outgoing
[2023-11-26 10:42:12,935 INFO  L130     BoogieDeclarations]: Found specification of procedure sendEmail
[2023-11-26 10:42:12,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure sendEmail
[2023-11-26 10:42:12,935 INFO  L130     BoogieDeclarations]: Found specification of procedure isEncrypted
[2023-11-26 10:42:12,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEncrypted
[2023-11-26 10:42:12,936 INFO  L130     BoogieDeclarations]: Found specification of procedure setClientPrivateKey
[2023-11-26 10:42:12,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure setClientPrivateKey
[2023-11-26 10:42:12,936 INFO  L130     BoogieDeclarations]: Found specification of procedure setEmailTo
[2023-11-26 10:42:12,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure setEmailTo
[2023-11-26 10:42:12,936 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-26 10:42:12,936 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2023-11-26 10:42:12,936 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#2
[2023-11-26 10:42:12,937 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#3
[2023-11-26 10:42:12,937 INFO  L130     BoogieDeclarations]: Found specification of procedure generateKeyPair
[2023-11-26 10:42:12,937 INFO  L138     BoogieDeclarations]: Found implementation of procedure generateKeyPair
[2023-11-26 10:42:12,937 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-26 10:42:12,937 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-26 10:42:13,165 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-26 10:42:13,167 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-26 10:42:14,171 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-26 10:42:14,273 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-26 10:42:14,273 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-26 10:42:14,274 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:14 BoogieIcfgContainer
[2023-11-26 10:42:14,274 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-26 10:42:14,280 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-26 10:42:14,280 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-26 10:42:14,283 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-26 10:42:14,283 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:11" (1/3) ...
[2023-11-26 10:42:14,284 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cd1546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:14, skipping insertion in model container
[2023-11-26 10:42:14,285 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:12" (2/3) ...
[2023-11-26 10:42:14,287 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cd1546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:14, skipping insertion in model container
[2023-11-26 10:42:14,287 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:14" (3/3) ...
[2023-11-26 10:42:14,288 INFO  L112   eAbstractionObserver]: Analyzing ICFG email_spec9_product22.cil.c
[2023-11-26 10:42:14,307 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-26 10:42:14,307 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-26 10:42:14,366 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-26 10:42:14,373 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;@4a8f576d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-26 10:42:14,373 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-26 10:42:14,380 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 294 states, 224 states have (on average 1.59375) internal successors, (357), 228 states have internal predecessors, (357), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50)
[2023-11-26 10:42:14,402 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2023-11-26 10:42:14,402 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:14,403 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:14,404 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:14,409 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:14,409 INFO  L85        PathProgramCache]: Analyzing trace with hash 1024115756, now seen corresponding path program 1 times
[2023-11-26 10:42:14,419 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:14,420 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310602126]
[2023-11-26 10:42:14,420 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:14,421 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:14,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,328 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:15,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,350 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:15,354 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,360 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:15,366 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,404 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2023-11-26 10:42:15,407 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,410 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2023-11-26 10:42:15,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,416 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2023-11-26 10:42:15,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,432 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2023-11-26 10:42:15,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,449 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2023-11-26 10:42:15,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,453 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2023-11-26 10:42:15,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,457 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2023-11-26 10:42:15,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,464 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2023-11-26 10:42:15,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,475 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2023-11-26 10:42:15,476 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:15,476 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310602126]
[2023-11-26 10:42:15,477 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310602126] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-26 10:42:15,478 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956258670]
[2023-11-26 10:42:15,479 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:15,479 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:42:15,479 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 10:42:15,487 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 10:42:15,490 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-26 10:42:15,920 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:15,926 INFO  L262         TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-11-26 10:42:15,937 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-26 10:42:15,962 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2023-11-26 10:42:15,962 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-26 10:42:15,963 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956258670] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:15,963 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-26 10:42:15,964 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9
[2023-11-26 10:42:15,966 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853448992]
[2023-11-26 10:42:15,967 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:15,973 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-26 10:42:15,973 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:16,035 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-26 10:42:16,036 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-26 10:42:16,042 INFO  L87              Difference]: Start difference. First operand  has 294 states, 224 states have (on average 1.59375) internal successors, (357), 228 states have internal predecessors, (357), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand  has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:16,179 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:16,179 INFO  L93              Difference]: Finished difference Result 439 states and 670 transitions.
[2023-11-26 10:42:16,184 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-26 10:42:16,186 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83
[2023-11-26 10:42:16,186 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:16,213 INFO  L225             Difference]: With dead ends: 439
[2023-11-26 10:42:16,213 INFO  L226             Difference]: Without dead ends: 291
[2023-11-26 10:42:16,227 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-26 10:42:16,233 INFO  L413           NwaCegarLoop]: 436 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:16,234 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 436 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-26 10:42:16,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 291 states.
[2023-11-26 10:42:16,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291.
[2023-11-26 10:42:16,305 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 291 states, 222 states have (on average 1.5765765765765767) internal successors, (350), 225 states have internal predecessors, (350), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49)
[2023-11-26 10:42:16,311 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 449 transitions.
[2023-11-26 10:42:16,316 INFO  L78                 Accepts]: Start accepts. Automaton has 291 states and 449 transitions. Word has length 83
[2023-11-26 10:42:16,317 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:16,319 INFO  L495      AbstractCegarLoop]: Abstraction has 291 states and 449 transitions.
[2023-11-26 10:42:16,319 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:16,320 INFO  L276                IsEmpty]: Start isEmpty. Operand 291 states and 449 transitions.
[2023-11-26 10:42:16,326 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2023-11-26 10:42:16,332 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:16,333 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:16,348 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-26 10:42:16,542 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-11-26 10:42:16,542 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:16,543 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:16,543 INFO  L85        PathProgramCache]: Analyzing trace with hash 200733790, now seen corresponding path program 1 times
[2023-11-26 10:42:16,543 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:16,544 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289137406]
[2023-11-26 10:42:16,544 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:16,544 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:16,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,801 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:16,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,818 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:16,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,824 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:16,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,853 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2023-11-26 10:42:16,856 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,859 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2023-11-26 10:42:16,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,865 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2023-11-26 10:42:16,868 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,882 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2023-11-26 10:42:16,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,899 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2023-11-26 10:42:16,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,903 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2023-11-26 10:42:16,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,907 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2023-11-26 10:42:16,909 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,911 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2023-11-26 10:42:16,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:16,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2023-11-26 10:42:16,916 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:16,916 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289137406]
[2023-11-26 10:42:16,917 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289137406] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-26 10:42:16,917 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149020154]
[2023-11-26 10:42:16,917 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:16,918 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:42:16,918 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 10:42:16,919 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 10:42:16,939 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-26 10:42:17,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:17,262 INFO  L262         TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-11-26 10:42:17,268 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-26 10:42:17,301 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2023-11-26 10:42:17,306 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-26 10:42:17,306 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [149020154] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:17,306 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-26 10:42:17,307 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10
[2023-11-26 10:42:17,307 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822723544]
[2023-11-26 10:42:17,307 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:17,308 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-26 10:42:17,309 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:17,310 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-26 10:42:17,311 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2023-11-26 10:42:17,311 INFO  L87              Difference]: Start difference. First operand 291 states and 449 transitions. Second operand  has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:17,427 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:17,428 INFO  L93              Difference]: Finished difference Result 435 states and 657 transitions.
[2023-11-26 10:42:17,428 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-26 10:42:17,428 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84
[2023-11-26 10:42:17,429 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:17,438 INFO  L225             Difference]: With dead ends: 435
[2023-11-26 10:42:17,439 INFO  L226             Difference]: Without dead ends: 293
[2023-11-26 10:42:17,440 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2023-11-26 10:42:17,443 INFO  L413           NwaCegarLoop]: 433 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:17,443 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 865 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-26 10:42:17,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 293 states.
[2023-11-26 10:42:17,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293.
[2023-11-26 10:42:17,494 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 293 states, 224 states have (on average 1.5714285714285714) internal successors, (352), 227 states have internal predecessors, (352), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49)
[2023-11-26 10:42:17,497 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 451 transitions.
[2023-11-26 10:42:17,498 INFO  L78                 Accepts]: Start accepts. Automaton has 293 states and 451 transitions. Word has length 84
[2023-11-26 10:42:17,498 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:17,498 INFO  L495      AbstractCegarLoop]: Abstraction has 293 states and 451 transitions.
[2023-11-26 10:42:17,502 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:17,503 INFO  L276                IsEmpty]: Start isEmpty. Operand 293 states and 451 transitions.
[2023-11-26 10:42:17,509 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2023-11-26 10:42:17,509 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:17,510 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:17,525 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-26 10:42:17,717 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2023-11-26 10:42:17,717 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:17,717 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:17,718 INFO  L85        PathProgramCache]: Analyzing trace with hash 1425436778, now seen corresponding path program 1 times
[2023-11-26 10:42:17,718 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:17,718 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125076403]
[2023-11-26 10:42:17,718 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:17,718 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:17,747 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:17,950 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:17,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:17,963 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:17,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:17,968 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:17,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:18,000 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2023-11-26 10:42:18,003 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:18,006 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2023-11-26 10:42:18,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:18,011 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2023-11-26 10:42:18,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:18,027 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2023-11-26 10:42:18,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:18,040 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2023-11-26 10:42:18,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:18,043 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2023-11-26 10:42:18,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:18,047 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2023-11-26 10:42:18,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:18,050 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2023-11-26 10:42:18,052 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:18,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-11-26 10:42:18,057 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:18,058 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125076403]
[2023-11-26 10:42:18,058 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125076403] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-26 10:42:18,058 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104608307]
[2023-11-26 10:42:18,058 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:18,059 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:42:18,062 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 10:42:18,064 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 10:42:18,087 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-26 10:42:18,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:18,373 INFO  L262         TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-26 10:42:18,384 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-26 10:42:18,415 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2023-11-26 10:42:18,415 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-26 10:42:18,416 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104608307] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:18,419 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-26 10:42:18,419 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10
[2023-11-26 10:42:18,420 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818274570]
[2023-11-26 10:42:18,420 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:18,421 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-26 10:42:18,421 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:18,421 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-26 10:42:18,422 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2023-11-26 10:42:18,422 INFO  L87              Difference]: Start difference. First operand 293 states and 451 transitions. Second operand  has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:18,521 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:18,522 INFO  L93              Difference]: Finished difference Result 620 states and 968 transitions.
[2023-11-26 10:42:18,522 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-26 10:42:18,522 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 91
[2023-11-26 10:42:18,524 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:18,528 INFO  L225             Difference]: With dead ends: 620
[2023-11-26 10:42:18,528 INFO  L226             Difference]: Without dead ends: 349
[2023-11-26 10:42:18,530 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2023-11-26 10:42:18,534 INFO  L413           NwaCegarLoop]: 445 mSDtfsCounter, 109 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:18,541 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 835 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 10:42:18,542 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 349 states.
[2023-11-26 10:42:18,565 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 344.
[2023-11-26 10:42:18,568 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 344 states, 264 states have (on average 1.5871212121212122) internal successors, (419), 267 states have internal predecessors, (419), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)
[2023-11-26 10:42:18,573 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 540 transitions.
[2023-11-26 10:42:18,574 INFO  L78                 Accepts]: Start accepts. Automaton has 344 states and 540 transitions. Word has length 91
[2023-11-26 10:42:18,574 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:18,574 INFO  L495      AbstractCegarLoop]: Abstraction has 344 states and 540 transitions.
[2023-11-26 10:42:18,575 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:18,575 INFO  L276                IsEmpty]: Start isEmpty. Operand 344 states and 540 transitions.
[2023-11-26 10:42:18,582 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2023-11-26 10:42:18,582 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:18,582 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:18,594 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-26 10:42:18,790 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:42:18,790 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:18,791 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:18,791 INFO  L85        PathProgramCache]: Analyzing trace with hash -141228702, now seen corresponding path program 1 times
[2023-11-26 10:42:18,791 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:18,791 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912110542]
[2023-11-26 10:42:18,792 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:18,792 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:18,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,007 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:19,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,020 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:19,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,025 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:19,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,048 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2023-11-26 10:42:19,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,053 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2023-11-26 10:42:19,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,057 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2023-11-26 10:42:19,059 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,071 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2023-11-26 10:42:19,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,085 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2023-11-26 10:42:19,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,087 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2023-11-26 10:42:19,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,090 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2023-11-26 10:42:19,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,093 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2023-11-26 10:42:19,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,097 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-11-26 10:42:19,097 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:19,097 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912110542]
[2023-11-26 10:42:19,097 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912110542] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-26 10:42:19,098 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194466247]
[2023-11-26 10:42:19,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:19,098 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:42:19,098 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 10:42:19,103 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 10:42:19,117 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-26 10:42:19,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:19,415 INFO  L262         TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-26 10:42:19,419 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-26 10:42:19,504 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2023-11-26 10:42:19,504 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-26 10:42:19,504 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194466247] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:19,504 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-26 10:42:19,505 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2023-11-26 10:42:19,505 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407864429]
[2023-11-26 10:42:19,505 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:19,506 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-26 10:42:19,506 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:19,507 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-26 10:42:19,507 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2023-11-26 10:42:19,507 INFO  L87              Difference]: Start difference. First operand 344 states and 540 transitions. Second operand  has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11)
[2023-11-26 10:42:19,636 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:19,636 INFO  L93              Difference]: Finished difference Result 683 states and 1074 transitions.
[2023-11-26 10:42:19,637 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-26 10:42:19,637 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92
[2023-11-26 10:42:19,638 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:19,641 INFO  L225             Difference]: With dead ends: 683
[2023-11-26 10:42:19,641 INFO  L226             Difference]: Without dead ends: 346
[2023-11-26 10:42:19,643 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156
[2023-11-26 10:42:19,644 INFO  L413           NwaCegarLoop]: 424 mSDtfsCounter, 8 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:19,644 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1685 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-26 10:42:19,646 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 346 states.
[2023-11-26 10:42:19,678 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346.
[2023-11-26 10:42:19,679 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 346 states, 265 states have (on average 1.5849056603773586) internal successors, (420), 269 states have internal predecessors, (420), 61 states have call successors, (61), 18 states have call predecessors, (61), 19 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62)
[2023-11-26 10:42:19,682 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 543 transitions.
[2023-11-26 10:42:19,683 INFO  L78                 Accepts]: Start accepts. Automaton has 346 states and 543 transitions. Word has length 92
[2023-11-26 10:42:19,683 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:19,683 INFO  L495      AbstractCegarLoop]: Abstraction has 346 states and 543 transitions.
[2023-11-26 10:42:19,683 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11)
[2023-11-26 10:42:19,683 INFO  L276                IsEmpty]: Start isEmpty. Operand 346 states and 543 transitions.
[2023-11-26 10:42:19,691 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2023-11-26 10:42:19,691 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:19,691 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:19,709 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-26 10:42:19,899 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:42:19,899 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:19,899 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:19,899 INFO  L85        PathProgramCache]: Analyzing trace with hash 1847064056, now seen corresponding path program 1 times
[2023-11-26 10:42:19,900 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:19,900 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044008418]
[2023-11-26 10:42:19,900 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:19,900 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:19,928 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,053 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:20,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,066 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:20,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,070 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:20,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,096 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:20,098 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,122 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2023-11-26 10:42:20,124 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,126 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2023-11-26 10:42:20,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,142 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2023-11-26 10:42:20,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,159 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2023-11-26 10:42:20,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,161 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2023-11-26 10:42:20,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,164 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2023-11-26 10:42:20,166 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,167 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2023-11-26 10:42:20,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2023-11-26 10:42:20,170 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:20,170 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044008418]
[2023-11-26 10:42:20,170 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044008418] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-26 10:42:20,171 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055869347]
[2023-11-26 10:42:20,171 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:20,171 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:42:20,171 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 10:42:20,172 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 10:42:20,180 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-26 10:42:20,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:20,481 INFO  L262         TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-26 10:42:20,485 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-26 10:42:20,549 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2023-11-26 10:42:20,549 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-26 10:42:20,550 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055869347] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:20,550 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-26 10:42:20,550 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15
[2023-11-26 10:42:20,550 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464424063]
[2023-11-26 10:42:20,550 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:20,551 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-26 10:42:20,551 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:20,552 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-26 10:42:20,552 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210
[2023-11-26 10:42:20,552 INFO  L87              Difference]: Start difference. First operand 346 states and 543 transitions. Second operand  has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)
[2023-11-26 10:42:20,708 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:20,708 INFO  L93              Difference]: Finished difference Result 685 states and 1079 transitions.
[2023-11-26 10:42:20,708 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-26 10:42:20,709 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93
[2023-11-26 10:42:20,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:20,713 INFO  L225             Difference]: With dead ends: 685
[2023-11-26 10:42:20,713 INFO  L226             Difference]: Without dead ends: 348
[2023-11-26 10:42:20,714 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240
[2023-11-26 10:42:20,715 INFO  L413           NwaCegarLoop]: 422 mSDtfsCounter, 8 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:20,716 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1671 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-26 10:42:20,717 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 348 states.
[2023-11-26 10:42:20,738 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348.
[2023-11-26 10:42:20,741 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 348 states, 266 states have (on average 1.5827067669172932) internal successors, (421), 271 states have internal predecessors, (421), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67)
[2023-11-26 10:42:20,744 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 549 transitions.
[2023-11-26 10:42:20,744 INFO  L78                 Accepts]: Start accepts. Automaton has 348 states and 549 transitions. Word has length 93
[2023-11-26 10:42:20,744 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:20,745 INFO  L495      AbstractCegarLoop]: Abstraction has 348 states and 549 transitions.
[2023-11-26 10:42:20,745 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)
[2023-11-26 10:42:20,745 INFO  L276                IsEmpty]: Start isEmpty. Operand 348 states and 549 transitions.
[2023-11-26 10:42:20,748 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 95
[2023-11-26 10:42:20,748 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:20,748 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:20,764 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-26 10:42:20,959 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:42:20,959 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:20,960 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:20,960 INFO  L85        PathProgramCache]: Analyzing trace with hash 937544885, now seen corresponding path program 1 times
[2023-11-26 10:42:20,960 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:20,960 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208001377]
[2023-11-26 10:42:20,961 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:20,961 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:20,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,132 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:21,134 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,144 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:21,147 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,149 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:21,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,153 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:21,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,157 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:21,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,181 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2023-11-26 10:42:21,183 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,195 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2023-11-26 10:42:21,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,212 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2023-11-26 10:42:21,213 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,214 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2023-11-26 10:42:21,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,218 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2023-11-26 10:42:21,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,221 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2023-11-26 10:42:21,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:21,224 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-11-26 10:42:21,224 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:21,225 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208001377]
[2023-11-26 10:42:21,225 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208001377] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:21,225 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:21,225 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-26 10:42:21,225 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246674550]
[2023-11-26 10:42:21,226 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:21,226 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-26 10:42:21,226 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:21,227 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-26 10:42:21,227 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-26 10:42:21,228 INFO  L87              Difference]: Start difference. First operand 348 states and 549 transitions. Second operand  has 9 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11)
[2023-11-26 10:42:24,093 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:24,093 INFO  L93              Difference]: Finished difference Result 824 states and 1315 transitions.
[2023-11-26 10:42:24,094 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-11-26 10:42:24,094 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 94
[2023-11-26 10:42:24,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:24,111 INFO  L225             Difference]: With dead ends: 824
[2023-11-26 10:42:24,111 INFO  L226             Difference]: Without dead ends: 495
[2023-11-26 10:42:24,113 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272
[2023-11-26 10:42:24,115 INFO  L413           NwaCegarLoop]: 162 mSDtfsCounter, 950 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:24,115 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1011 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time]
[2023-11-26 10:42:24,118 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 495 states.
[2023-11-26 10:42:24,191 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 348.
[2023-11-26 10:42:24,192 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 348 states, 266 states have (on average 1.5827067669172932) internal successors, (421), 271 states have internal predecessors, (421), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66)
[2023-11-26 10:42:24,202 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 548 transitions.
[2023-11-26 10:42:24,203 INFO  L78                 Accepts]: Start accepts. Automaton has 348 states and 548 transitions. Word has length 94
[2023-11-26 10:42:24,204 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:24,204 INFO  L495      AbstractCegarLoop]: Abstraction has 348 states and 548 transitions.
[2023-11-26 10:42:24,204 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11)
[2023-11-26 10:42:24,204 INFO  L276                IsEmpty]: Start isEmpty. Operand 348 states and 548 transitions.
[2023-11-26 10:42:24,207 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2023-11-26 10:42:24,208 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:24,208 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:24,209 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-26 10:42:24,209 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:24,209 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:24,210 INFO  L85        PathProgramCache]: Analyzing trace with hash -2079734675, now seen corresponding path program 2 times
[2023-11-26 10:42:24,210 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:24,210 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725635898]
[2023-11-26 10:42:24,210 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:24,210 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:24,245 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,373 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:24,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,384 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:24,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,388 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:24,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,391 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:24,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,395 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:24,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,417 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2023-11-26 10:42:24,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,429 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2023-11-26 10:42:24,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,442 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2023-11-26 10:42:24,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,445 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2023-11-26 10:42:24,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,448 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2023-11-26 10:42:24,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,450 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2023-11-26 10:42:24,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:24,453 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-11-26 10:42:24,453 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:24,453 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725635898]
[2023-11-26 10:42:24,453 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725635898] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:24,453 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:24,454 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-26 10:42:24,454 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751047562]
[2023-11-26 10:42:24,454 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:24,454 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-26 10:42:24,455 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:24,455 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-26 10:42:24,455 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-26 10:42:24,456 INFO  L87              Difference]: Start difference. First operand 348 states and 548 transitions. Second operand  has 9 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11)
[2023-11-26 10:42:27,018 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:27,018 INFO  L93              Difference]: Finished difference Result 826 states and 1318 transitions.
[2023-11-26 10:42:27,019 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-11-26 10:42:27,019 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 95
[2023-11-26 10:42:27,020 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:27,028 INFO  L225             Difference]: With dead ends: 826
[2023-11-26 10:42:27,029 INFO  L226             Difference]: Without dead ends: 497
[2023-11-26 10:42:27,037 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272
[2023-11-26 10:42:27,038 INFO  L413           NwaCegarLoop]: 162 mSDtfsCounter, 945 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:27,039 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 1011 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]
[2023-11-26 10:42:27,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 497 states.
[2023-11-26 10:42:27,106 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 350.
[2023-11-26 10:42:27,107 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 350 states, 267 states have (on average 1.5805243445692885) internal successors, (422), 273 states have internal predecessors, (422), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68)
[2023-11-26 10:42:27,111 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 551 transitions.
[2023-11-26 10:42:27,111 INFO  L78                 Accepts]: Start accepts. Automaton has 350 states and 551 transitions. Word has length 95
[2023-11-26 10:42:27,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:27,112 INFO  L495      AbstractCegarLoop]: Abstraction has 350 states and 551 transitions.
[2023-11-26 10:42:27,112 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11)
[2023-11-26 10:42:27,112 INFO  L276                IsEmpty]: Start isEmpty. Operand 350 states and 551 transitions.
[2023-11-26 10:42:27,115 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 97
[2023-11-26 10:42:27,116 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:27,116 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:27,116 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-26 10:42:27,116 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:27,117 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:27,117 INFO  L85        PathProgramCache]: Analyzing trace with hash 830987982, now seen corresponding path program 1 times
[2023-11-26 10:42:27,117 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:27,117 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185920999]
[2023-11-26 10:42:27,117 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:27,118 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:27,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,311 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:27,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,326 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:27,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,330 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:27,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,334 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:27,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,339 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:27,342 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,364 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-26 10:42:27,367 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,379 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2023-11-26 10:42:27,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,395 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2023-11-26 10:42:27,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,398 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2023-11-26 10:42:27,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,401 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2023-11-26 10:42:27,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,405 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2023-11-26 10:42:27,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:27,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-11-26 10:42:27,410 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:27,410 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185920999]
[2023-11-26 10:42:27,410 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185920999] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:27,410 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:27,410 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-26 10:42:27,411 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922871391]
[2023-11-26 10:42:27,411 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:27,412 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-26 10:42:27,412 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:27,413 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-26 10:42:27,413 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-26 10:42:27,414 INFO  L87              Difference]: Start difference. First operand 350 states and 551 transitions. Second operand  has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11)
[2023-11-26 10:42:29,950 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:29,950 INFO  L93              Difference]: Finished difference Result 826 states and 1317 transitions.
[2023-11-26 10:42:29,951 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-26 10:42:29,951 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96
[2023-11-26 10:42:29,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:29,960 INFO  L225             Difference]: With dead ends: 826
[2023-11-26 10:42:29,960 INFO  L226             Difference]: Without dead ends: 497
[2023-11-26 10:42:29,964 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306
[2023-11-26 10:42:29,965 INFO  L413           NwaCegarLoop]: 162 mSDtfsCounter, 948 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:29,966 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1011 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2424 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2023-11-26 10:42:29,968 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 497 states.
[2023-11-26 10:42:30,019 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 350.
[2023-11-26 10:42:30,020 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 350 states, 267 states have (on average 1.5805243445692885) internal successors, (422), 273 states have internal predecessors, (422), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68)
[2023-11-26 10:42:30,024 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 551 transitions.
[2023-11-26 10:42:30,024 INFO  L78                 Accepts]: Start accepts. Automaton has 350 states and 551 transitions. Word has length 96
[2023-11-26 10:42:30,025 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:30,025 INFO  L495      AbstractCegarLoop]: Abstraction has 350 states and 551 transitions.
[2023-11-26 10:42:30,025 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11)
[2023-11-26 10:42:30,025 INFO  L276                IsEmpty]: Start isEmpty. Operand 350 states and 551 transitions.
[2023-11-26 10:42:30,027 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 97
[2023-11-26 10:42:30,028 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:30,028 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:30,028 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-26 10:42:30,028 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:30,029 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:30,029 INFO  L85        PathProgramCache]: Analyzing trace with hash 885380880, now seen corresponding path program 1 times
[2023-11-26 10:42:30,029 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:30,029 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346177444]
[2023-11-26 10:42:30,030 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:30,030 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:30,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,231 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:30,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,244 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:30,246 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,248 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:30,250 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,253 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:30,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,257 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:30,260 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,289 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-26 10:42:30,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,334 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2023-11-26 10:42:30,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,350 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2023-11-26 10:42:30,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,353 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2023-11-26 10:42:30,354 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,356 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2023-11-26 10:42:30,357 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,359 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2023-11-26 10:42:30,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:30,363 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2023-11-26 10:42:30,363 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:30,364 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346177444]
[2023-11-26 10:42:30,364 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346177444] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:30,364 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:30,364 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2023-11-26 10:42:30,365 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552182184]
[2023-11-26 10:42:30,365 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:30,365 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-26 10:42:30,366 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:30,366 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-26 10:42:30,367 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132
[2023-11-26 10:42:30,367 INFO  L87              Difference]: Start difference. First operand 350 states and 551 transitions. Second operand  has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11)
[2023-11-26 10:42:33,567 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:33,567 INFO  L93              Difference]: Finished difference Result 824 states and 1312 transitions.
[2023-11-26 10:42:33,568 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-11-26 10:42:33,568 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 96
[2023-11-26 10:42:33,569 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:33,573 INFO  L225             Difference]: With dead ends: 824
[2023-11-26 10:42:33,573 INFO  L226             Difference]: Without dead ends: 497
[2023-11-26 10:42:33,576 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552
[2023-11-26 10:42:33,576 INFO  L413           NwaCegarLoop]: 154 mSDtfsCounter, 955 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 4334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:33,577 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1398 Invalid, 4334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 4013 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2023-11-26 10:42:33,578 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 497 states.
[2023-11-26 10:42:33,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 350.
[2023-11-26 10:42:33,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 350 states, 267 states have (on average 1.5805243445692885) internal successors, (422), 273 states have internal predecessors, (422), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67)
[2023-11-26 10:42:33,615 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 550 transitions.
[2023-11-26 10:42:33,616 INFO  L78                 Accepts]: Start accepts. Automaton has 350 states and 550 transitions. Word has length 96
[2023-11-26 10:42:33,616 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:33,616 INFO  L495      AbstractCegarLoop]: Abstraction has 350 states and 550 transitions.
[2023-11-26 10:42:33,617 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11)
[2023-11-26 10:42:33,617 INFO  L276                IsEmpty]: Start isEmpty. Operand 350 states and 550 transitions.
[2023-11-26 10:42:33,619 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2023-11-26 10:42:33,619 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:33,619 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:33,620 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-26 10:42:33,620 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:33,620 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:33,620 INFO  L85        PathProgramCache]: Analyzing trace with hash -857063351, now seen corresponding path program 2 times
[2023-11-26 10:42:33,621 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:33,621 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489575433]
[2023-11-26 10:42:33,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:33,621 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:33,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,757 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:33,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,768 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:33,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,772 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:33,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,779 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:33,781 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,782 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:33,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,807 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-26 10:42:33,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,846 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2023-11-26 10:42:33,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,865 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2023-11-26 10:42:33,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,868 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2023-11-26 10:42:33,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,873 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2023-11-26 10:42:33,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,875 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2023-11-26 10:42:33,876 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:33,878 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2023-11-26 10:42:33,878 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:33,878 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489575433]
[2023-11-26 10:42:33,878 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489575433] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:33,879 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:33,879 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2023-11-26 10:42:33,879 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977671752]
[2023-11-26 10:42:33,879 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:33,880 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-26 10:42:33,880 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:33,880 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-26 10:42:33,881 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132
[2023-11-26 10:42:33,881 INFO  L87              Difference]: Start difference. First operand 350 states and 550 transitions. Second operand  has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11)
[2023-11-26 10:42:37,175 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:37,175 INFO  L93              Difference]: Finished difference Result 826 states and 1318 transitions.
[2023-11-26 10:42:37,175 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-11-26 10:42:37,176 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 97
[2023-11-26 10:42:37,176 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:37,181 INFO  L225             Difference]: With dead ends: 826
[2023-11-26 10:42:37,182 INFO  L226             Difference]: Without dead ends: 499
[2023-11-26 10:42:37,184 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552
[2023-11-26 10:42:37,185 INFO  L413           NwaCegarLoop]: 154 mSDtfsCounter, 950 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 4032 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 4032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:37,186 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1398 Invalid, 4351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 4032 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]
[2023-11-26 10:42:37,188 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 499 states.
[2023-11-26 10:42:37,221 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 352.
[2023-11-26 10:42:37,222 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 352 states, 268 states have (on average 1.578358208955224) internal successors, (423), 275 states have internal predecessors, (423), 61 states have call successors, (61), 18 states have call predecessors, (61), 22 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72)
[2023-11-26 10:42:37,225 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 556 transitions.
[2023-11-26 10:42:37,225 INFO  L78                 Accepts]: Start accepts. Automaton has 352 states and 556 transitions. Word has length 97
[2023-11-26 10:42:37,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:37,226 INFO  L495      AbstractCegarLoop]: Abstraction has 352 states and 556 transitions.
[2023-11-26 10:42:37,226 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11)
[2023-11-26 10:42:37,226 INFO  L276                IsEmpty]: Start isEmpty. Operand 352 states and 556 transitions.
[2023-11-26 10:42:37,229 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2023-11-26 10:42:37,229 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:37,229 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:37,230 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-26 10:42:37,230 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:37,230 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:37,231 INFO  L85        PathProgramCache]: Analyzing trace with hash -101420597, now seen corresponding path program 1 times
[2023-11-26 10:42:37,231 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:37,231 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702121686]
[2023-11-26 10:42:37,231 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:37,231 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:37,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,417 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:37,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,429 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:37,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,432 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:37,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,460 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:37,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,474 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:37,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,478 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-26 10:42:37,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,493 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2023-11-26 10:42:37,494 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,507 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2023-11-26 10:42:37,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,509 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2023-11-26 10:42:37,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,511 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2023-11-26 10:42:37,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,513 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2023-11-26 10:42:37,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,516 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2023-11-26 10:42:37,516 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:37,516 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702121686]
[2023-11-26 10:42:37,516 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702121686] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-26 10:42:37,517 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432763414]
[2023-11-26 10:42:37,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:37,517 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:42:37,517 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 10:42:37,519 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 10:42:37,528 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-26 10:42:37,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:37,827 INFO  L262         TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-26 10:42:37,831 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-26 10:42:37,879 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2023-11-26 10:42:37,880 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-26 10:42:37,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2023-11-26 10:42:37,971 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432763414] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-26 10:42:37,971 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-26 10:42:37,972 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15
[2023-11-26 10:42:37,974 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015553077]
[2023-11-26 10:42:37,974 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-26 10:42:37,975 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-26 10:42:37,975 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:37,976 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-26 10:42:37,976 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210
[2023-11-26 10:42:37,976 INFO  L87              Difference]: Start difference. First operand 352 states and 556 transitions. Second operand  has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20)
[2023-11-26 10:42:41,892 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:41,892 INFO  L93              Difference]: Finished difference Result 1175 states and 1964 transitions.
[2023-11-26 10:42:41,893 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2023-11-26 10:42:41,893 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 98
[2023-11-26 10:42:41,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:41,901 INFO  L225             Difference]: With dead ends: 1175
[2023-11-26 10:42:41,901 INFO  L226             Difference]: Without dead ends: 849
[2023-11-26 10:42:41,905 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992
[2023-11-26 10:42:41,906 INFO  L413           NwaCegarLoop]: 152 mSDtfsCounter, 2141 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 4434 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 4434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:41,906 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 1579 Invalid, 5070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [636 Valid, 4434 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2023-11-26 10:42:41,908 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 849 states.
[2023-11-26 10:42:41,961 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 687.
[2023-11-26 10:42:41,963 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 687 states, 539 states have (on average 1.6252319109461966) internal successors, (876), 546 states have internal predecessors, (876), 125 states have call successors, (125), 18 states have call predecessors, (125), 22 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146)
[2023-11-26 10:42:41,968 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1147 transitions.
[2023-11-26 10:42:41,969 INFO  L78                 Accepts]: Start accepts. Automaton has 687 states and 1147 transitions. Word has length 98
[2023-11-26 10:42:41,969 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:41,969 INFO  L495      AbstractCegarLoop]: Abstraction has 687 states and 1147 transitions.
[2023-11-26 10:42:41,969 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20)
[2023-11-26 10:42:41,970 INFO  L276                IsEmpty]: Start isEmpty. Operand 687 states and 1147 transitions.
[2023-11-26 10:42:41,973 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2023-11-26 10:42:41,974 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:41,974 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:41,983 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-26 10:42:42,181 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7991473b-c454-4ee1-bdbd-c98d87514d51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:42:42,182 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:42,182 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:42,182 INFO  L85        PathProgramCache]: Analyzing trace with hash -679333995, now seen corresponding path program 1 times
[2023-11-26 10:42:42,182 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:42,182 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157272093]
[2023-11-26 10:42:42,182 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:42,183 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:42,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,261 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:42,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,273 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:42,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,276 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:42,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,280 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:42,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,283 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:42,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,287 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-26 10:42:42,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,301 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2023-11-26 10:42:42,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,313 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2023-11-26 10:42:42,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,317 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2023-11-26 10:42:42,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,319 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2023-11-26 10:42:42,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,322 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2023-11-26 10:42:42,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:42,324 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2023-11-26 10:42:42,325 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:42,325 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157272093]
[2023-11-26 10:42:42,325 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157272093] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:42,325 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:42,325 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-26 10:42:42,326 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65013911]
[2023-11-26 10:42:42,326 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:42,326 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-26 10:42:42,326 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:42,327 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-26 10:42:42,327 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-26 10:42:42,328 INFO  L87              Difference]: Start difference. First operand 687 states and 1147 transitions. Second operand  has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:44,244 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:44,244 INFO  L93              Difference]: Finished difference Result 1770 states and 3023 transitions.
[2023-11-26 10:42:44,245 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-26 10:42:44,245 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102
[2023-11-26 10:42:44,245 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:44,254 INFO  L225             Difference]: With dead ends: 1770
[2023-11-26 10:42:44,255 INFO  L226             Difference]: Without dead ends: 1151
[2023-11-26 10:42:44,258 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2023-11-26 10:42:44,259 INFO  L413           NwaCegarLoop]: 182 mSDtfsCounter, 1045 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:44,260 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 781 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2023-11-26 10:42:44,262 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1151 states.
[2023-11-26 10:42:44,331 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 999.
[2023-11-26 10:42:44,333 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 999 states, 787 states have (on average 1.636594663278272) internal successors, (1288), 794 states have internal predecessors, (1288), 189 states have call successors, (189), 18 states have call predecessors, (189), 22 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220)
[2023-11-26 10:42:44,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1697 transitions.
[2023-11-26 10:42:44,340 INFO  L78                 Accepts]: Start accepts. Automaton has 999 states and 1697 transitions. Word has length 102
[2023-11-26 10:42:44,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:44,341 INFO  L495      AbstractCegarLoop]: Abstraction has 999 states and 1697 transitions.
[2023-11-26 10:42:44,341 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:44,341 INFO  L276                IsEmpty]: Start isEmpty. Operand 999 states and 1697 transitions.
[2023-11-26 10:42:44,347 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2023-11-26 10:42:44,347 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:44,347 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:44,347 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-11-26 10:42:44,348 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:44,348 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:44,348 INFO  L85        PathProgramCache]: Analyzing trace with hash -1607535416, now seen corresponding path program 1 times
[2023-11-26 10:42:44,348 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:44,348 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848903259]
[2023-11-26 10:42:44,349 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:44,349 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:44,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,408 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:44,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,418 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:44,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,422 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:44,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,425 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:44,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,429 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:44,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,432 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-26 10:42:44,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,442 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2023-11-26 10:42:44,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,452 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2023-11-26 10:42:44,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,455 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2023-11-26 10:42:44,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,457 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2023-11-26 10:42:44,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,460 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2023-11-26 10:42:44,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:44,462 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2023-11-26 10:42:44,462 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:44,462 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848903259]
[2023-11-26 10:42:44,463 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848903259] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:44,463 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:44,463 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-26 10:42:44,463 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425979829]
[2023-11-26 10:42:44,463 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:44,464 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-26 10:42:44,464 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:44,464 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-26 10:42:44,465 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-26 10:42:44,465 INFO  L87              Difference]: Start difference. First operand 999 states and 1697 transitions. Second operand  has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:46,340 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:46,340 INFO  L93              Difference]: Finished difference Result 2539 states and 4371 transitions.
[2023-11-26 10:42:46,340 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-26 10:42:46,341 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103
[2023-11-26 10:42:46,341 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:46,355 INFO  L225             Difference]: With dead ends: 2539
[2023-11-26 10:42:46,355 INFO  L226             Difference]: Without dead ends: 1658
[2023-11-26 10:42:46,360 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2023-11-26 10:42:46,361 INFO  L413           NwaCegarLoop]: 165 mSDtfsCounter, 1043 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:46,361 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 738 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2023-11-26 10:42:46,364 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1658 states.
[2023-11-26 10:42:46,465 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1506.
[2023-11-26 10:42:46,469 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1506 states, 1199 states have (on average 1.6413678065054211) internal successors, (1968), 1206 states have internal predecessors, (1968), 284 states have call successors, (284), 18 states have call predecessors, (284), 22 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315)
[2023-11-26 10:42:46,478 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2567 transitions.
[2023-11-26 10:42:46,479 INFO  L78                 Accepts]: Start accepts. Automaton has 1506 states and 2567 transitions. Word has length 103
[2023-11-26 10:42:46,479 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:46,479 INFO  L495      AbstractCegarLoop]: Abstraction has 1506 states and 2567 transitions.
[2023-11-26 10:42:46,479 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:46,480 INFO  L276                IsEmpty]: Start isEmpty. Operand 1506 states and 2567 transitions.
[2023-11-26 10:42:46,488 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 105
[2023-11-26 10:42:46,488 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:46,488 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:46,489 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2023-11-26 10:42:46,489 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:46,489 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:46,489 INFO  L85        PathProgramCache]: Analyzing trace with hash -2124117273, now seen corresponding path program 1 times
[2023-11-26 10:42:46,490 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:46,490 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582206142]
[2023-11-26 10:42:46,490 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:46,490 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:46,515 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,558 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:46,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,569 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:46,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,572 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:46,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,576 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:46,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,579 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:46,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,583 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-26 10:42:46,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,593 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2023-11-26 10:42:46,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,604 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2023-11-26 10:42:46,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,606 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2023-11-26 10:42:46,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,609 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2023-11-26 10:42:46,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,611 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2023-11-26 10:42:46,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:46,614 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2023-11-26 10:42:46,614 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:46,614 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582206142]
[2023-11-26 10:42:46,615 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582206142] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:46,615 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:46,615 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-26 10:42:46,615 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542952676]
[2023-11-26 10:42:46,615 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:46,616 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-26 10:42:46,616 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:46,617 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-26 10:42:46,617 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-26 10:42:46,617 INFO  L87              Difference]: Start difference. First operand 1506 states and 2567 transitions. Second operand  has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:48,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:48,401 INFO  L93              Difference]: Finished difference Result 3685 states and 6396 transitions.
[2023-11-26 10:42:48,401 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-26 10:42:48,401 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104
[2023-11-26 10:42:48,402 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:48,421 INFO  L225             Difference]: With dead ends: 3685
[2023-11-26 10:42:48,421 INFO  L226             Difference]: Without dead ends: 2425
[2023-11-26 10:42:48,427 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2023-11-26 10:42:48,428 INFO  L413           NwaCegarLoop]: 165 mSDtfsCounter, 1041 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:48,429 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 737 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2023-11-26 10:42:48,432 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2425 states.
[2023-11-26 10:42:48,593 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2273.
[2023-11-26 10:42:48,599 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2273 states, 1843 states have (on average 1.6456863809007054) internal successors, (3033), 1850 states have internal predecessors, (3033), 407 states have call successors, (407), 18 states have call predecessors, (407), 22 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454)
[2023-11-26 10:42:48,608 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 3894 transitions.
[2023-11-26 10:42:48,608 INFO  L78                 Accepts]: Start accepts. Automaton has 2273 states and 3894 transitions. Word has length 104
[2023-11-26 10:42:48,609 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:48,609 INFO  L495      AbstractCegarLoop]: Abstraction has 2273 states and 3894 transitions.
[2023-11-26 10:42:48,609 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:48,609 INFO  L276                IsEmpty]: Start isEmpty. Operand 2273 states and 3894 transitions.
[2023-11-26 10:42:48,622 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2023-11-26 10:42:48,623 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:48,623 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:48,623 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2023-11-26 10:42:48,623 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:48,624 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:48,624 INFO  L85        PathProgramCache]: Analyzing trace with hash 958477543, now seen corresponding path program 1 times
[2023-11-26 10:42:48,624 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:48,624 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763238709]
[2023-11-26 10:42:48,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:48,624 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:48,653 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,694 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:48,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,704 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:48,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,707 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:48,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,710 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:48,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,713 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:48,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,717 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-26 10:42:48,719 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,727 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2023-11-26 10:42:48,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,738 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2023-11-26 10:42:48,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,740 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2023-11-26 10:42:48,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,742 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2023-11-26 10:42:48,743 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,745 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2023-11-26 10:42:48,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:48,747 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2023-11-26 10:42:48,748 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:48,748 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763238709]
[2023-11-26 10:42:48,748 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763238709] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:48,749 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:48,749 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-26 10:42:48,749 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860690380]
[2023-11-26 10:42:48,749 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:48,750 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-26 10:42:48,750 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:48,750 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-26 10:42:48,750 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-26 10:42:48,751 INFO  L87              Difference]: Start difference. First operand 2273 states and 3894 transitions. Second operand  has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:50,577 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:50,577 INFO  L93              Difference]: Finished difference Result 5467 states and 9554 transitions.
[2023-11-26 10:42:50,578 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-26 10:42:50,578 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105
[2023-11-26 10:42:50,578 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:50,607 INFO  L225             Difference]: With dead ends: 5467
[2023-11-26 10:42:50,608 INFO  L226             Difference]: Without dead ends: 3649
[2023-11-26 10:42:50,615 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2023-11-26 10:42:50,616 INFO  L413           NwaCegarLoop]: 168 mSDtfsCounter, 1039 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:50,616 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 740 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2023-11-26 10:42:50,621 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3649 states.
[2023-11-26 10:42:50,850 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 3497.
[2023-11-26 10:42:50,859 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3497 states, 2888 states have (on average 1.6485457063711912) internal successors, (4761), 2895 states have internal predecessors, (4761), 586 states have call successors, (586), 18 states have call predecessors, (586), 22 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659)
[2023-11-26 10:42:50,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 6006 transitions.
[2023-11-26 10:42:50,874 INFO  L78                 Accepts]: Start accepts. Automaton has 3497 states and 6006 transitions. Word has length 105
[2023-11-26 10:42:50,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:50,875 INFO  L495      AbstractCegarLoop]: Abstraction has 3497 states and 6006 transitions.
[2023-11-26 10:42:50,875 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:50,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 3497 states and 6006 transitions.
[2023-11-26 10:42:50,888 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2023-11-26 10:42:50,889 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:50,889 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:50,889 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2023-11-26 10:42:50,889 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:50,890 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:50,890 INFO  L85        PathProgramCache]: Analyzing trace with hash -1468375221, now seen corresponding path program 1 times
[2023-11-26 10:42:50,890 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:50,890 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649941382]
[2023-11-26 10:42:50,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:50,891 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:50,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,006 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:51,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,017 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:51,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,021 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:51,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,025 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:51,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,029 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:51,031 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,033 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-26 10:42:51,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,054 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2023-11-26 10:42:51,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,064 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2023-11-26 10:42:51,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,067 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2023-11-26 10:42:51,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,069 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2023-11-26 10:42:51,070 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,072 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2023-11-26 10:42:51,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:51,076 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2023-11-26 10:42:51,076 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:51,077 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649941382]
[2023-11-26 10:42:51,077 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649941382] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:51,077 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:51,077 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-26 10:42:51,077 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494926700]
[2023-11-26 10:42:51,078 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:51,078 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-26 10:42:51,078 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:51,079 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-26 10:42:51,079 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-26 10:42:51,080 INFO  L87              Difference]: Start difference. First operand 3497 states and 6006 transitions. Second operand  has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:53,087 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:42:53,087 INFO  L93              Difference]: Finished difference Result 8446 states and 14794 transitions.
[2023-11-26 10:42:53,088 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-26 10:42:53,088 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106
[2023-11-26 10:42:53,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:42:53,130 INFO  L225             Difference]: With dead ends: 8446
[2023-11-26 10:42:53,130 INFO  L226             Difference]: Without dead ends: 5707
[2023-11-26 10:42:53,139 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2023-11-26 10:42:53,140 INFO  L413           NwaCegarLoop]: 183 mSDtfsCounter, 1037 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2023-11-26 10:42:53,141 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 778 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2023-11-26 10:42:53,148 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5707 states.
[2023-11-26 10:42:53,451 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5555.
[2023-11-26 10:42:53,462 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5555 states, 4570 states have (on average 1.637636761487965) internal successors, (7484), 4577 states have internal predecessors, (7484), 962 states have call successors, (962), 18 states have call predecessors, (962), 22 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079)
[2023-11-26 10:42:53,480 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 9525 transitions.
[2023-11-26 10:42:53,481 INFO  L78                 Accepts]: Start accepts. Automaton has 5555 states and 9525 transitions. Word has length 106
[2023-11-26 10:42:53,481 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:42:53,482 INFO  L495      AbstractCegarLoop]: Abstraction has 5555 states and 9525 transitions.
[2023-11-26 10:42:53,482 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)
[2023-11-26 10:42:53,482 INFO  L276                IsEmpty]: Start isEmpty. Operand 5555 states and 9525 transitions.
[2023-11-26 10:42:53,498 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2023-11-26 10:42:53,499 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:42:53,499 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:42:53,499 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2023-11-26 10:42:53,499 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:42:53,500 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:42:53,500 INFO  L85        PathProgramCache]: Analyzing trace with hash -1443901309, now seen corresponding path program 1 times
[2023-11-26 10:42:53,500 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:42:53,500 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38323599]
[2023-11-26 10:42:53,500 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:42:53,501 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:42:53,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,576 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-26 10:42:53,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,586 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-26 10:42:53,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,589 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-26 10:42:53,590 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,592 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-11-26 10:42:53,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,594 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-11-26 10:42:53,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,597 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-26 10:42:53,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,607 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2023-11-26 10:42:53,608 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,616 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2023-11-26 10:42:53,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,618 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2023-11-26 10:42:53,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,620 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2023-11-26 10:42:53,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,624 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2023-11-26 10:42:53,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:42:53,627 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2023-11-26 10:42:53,627 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:42:53,627 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38323599]
[2023-11-26 10:42:53,628 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38323599] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:42:53,628 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:42:53,628 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-26 10:42:53,628 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099887138]
[2023-11-26 10:42:53,628 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:42:53,629 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-26 10:42:53,629 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:42:53,630 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-26 10:42:53,630 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-26 10:42:53,630 INFO  L87              Difference]: Start difference. First operand 5555 states and 9525 transitions. Second operand  has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)