./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i --full-output --architecture 64bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 08:00:42,246 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 08:00:42,363 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-19 08:00:42,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 08:00:42,372 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 08:00:42,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 08:00:42,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 08:00:42,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 08:00:42,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 08:00:42,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 08:00:42,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 08:00:42,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 08:00:42,419 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 08:00:42,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 08:00:42,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 08:00:42,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 08:00:42,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 08:00:42,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 08:00:42,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 08:00:42,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 08:00:42,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 08:00:42,425 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 08:00:42,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 08:00:42,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 08:00:42,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 08:00:42,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 08:00:42,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 08:00:42,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 08:00:42,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 08:00:42,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 08:00:42,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 08:00:42,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 08:00:42,431 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 08:00:42,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 08:00:42,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 08:00:42,432 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 08:00:42,433 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_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29
[2023-11-19 08:00:42,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 08:00:42,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 08:00:42,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 08:00:42,795 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 08:00:42,796 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 08:00:42,798 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i
[2023-11-19 08:00:45,985 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 08:00:46,561 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 08:00:46,562 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i
[2023-11-19 08:00:46,614 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/data/585f5ed46/151a935446ed4b1baf197da1afb8d3d6/FLAGfedf48e5e
[2023-11-19 08:00:46,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/data/585f5ed46/151a935446ed4b1baf197da1afb8d3d6
[2023-11-19 08:00:46,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 08:00:46,643 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 08:00:46,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 08:00:46,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 08:00:46,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 08:00:46,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:46" (1/1) ...
[2023-11-19 08:00:46,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2988916f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:46, skipping insertion in model container
[2023-11-19 08:00:46,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:46" (1/1) ...
[2023-11-19 08:00:46,806 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 08:00:47,088 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_0bbcfc8c-e447-4c54-b433-346ab79fa419/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512]
[2023-11-19 08:00:47,098 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_0bbcfc8c-e447-4c54-b433-346ab79fa419/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572]
[2023-11-19 08:00:48,398 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:48,399 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:48,400 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:48,401 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:48,402 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:48,417 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:48,418 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:48,420 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:48,421 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:48,869 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n
[2023-11-19 08:00:48,871 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n
[2023-11-19 08:00:48,872 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n
[2023-11-19 08:00:48,873 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n
[2023-11-19 08:00:48,875 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add
[2023-11-19 08:00:48,876 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub
[2023-11-19 08:00:48,877 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or
[2023-11-19 08:00:48,878 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and
[2023-11-19 08:00:48,879 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor
[2023-11-19 08:00:48,880 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence
[2023-11-19 08:00:49,258 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,259 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,286 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:00:49,348 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 08:00:49,366 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_0bbcfc8c-e447-4c54-b433-346ab79fa419/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512]
[2023-11-19 08:00:49,367 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_0bbcfc8c-e447-4c54-b433-346ab79fa419/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572]
[2023-11-19 08:00:49,402 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,412 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,413 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,413 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,414 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,423 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,431 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,433 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,435 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,554 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n
[2023-11-19 08:00:49,558 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n
[2023-11-19 08:00:49,559 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n
[2023-11-19 08:00:49,567 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n
[2023-11-19 08:00:49,569 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add
[2023-11-19 08:00:49,570 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub
[2023-11-19 08:00:49,570 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or
[2023-11-19 08:00:49,571 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and
[2023-11-19 08:00:49,571 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor
[2023-11-19 08:00:49,572 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence
[2023-11-19 08:00:49,666 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8588]
[2023-11-19 08:00:49,668 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,669 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 08:00:49,684 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:00:49,981 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,981 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,981 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,983 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,984 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,984 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,985 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,985 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,985 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,985 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,985 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,986 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,986 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,987 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,987 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,988 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,988 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:49,996 INFO L206 MainTranslator]: Completed translation
[2023-11-19 08:00:49,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49 WrapperNode
[2023-11-19 08:00:49,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 08:00:49,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 08:00:50,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 08:00:50,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 08:00:50,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,216 INFO L138 Inliner]: procedures = 680, calls = 2274, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 368
[2023-11-19 08:00:50,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 08:00:50,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 08:00:50,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 08:00:50,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 08:00:50,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,353 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 08:00:50,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 08:00:50,362 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 08:00:50,362 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 08:00:50,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (1/1) ...
[2023-11-19 08:00:50,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 08:00:50,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:50,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 08:00:50,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 08:00:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid
[2023-11-19 08:00:50,440 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid
[2023-11-19 08:00:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case
[2023-11-19 08:00:50,440 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case
[2023-11-19 08:00:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length
[2023-11-19 08:00:50,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length
[2023-11-19 08:00:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool
[2023-11-19 08:00:50,441 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool
[2023-11-19 08:00:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 08:00:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-11-19 08:00:50,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-11-19 08:00:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-11-19 08:00:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 08:00:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2023-11-19 08:00:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 08:00:50,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 08:00:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc
[2023-11-19 08:00:50,443 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc
[2023-11-19 08:00:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-11-19 08:00:50,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-11-19 08:00:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2023-11-19 08:00:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator
[2023-11-19 08:00:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator
[2023-11-19 08:00:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t
[2023-11-19 08:00:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t
[2023-11-19 08:00:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 08:00:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 08:00:50,739 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 08:00:50,750 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 08:00:51,304 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 08:00:51,324 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 08:00:51,324 INFO L302 CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-19 08:00:51,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:51 BoogieIcfgContainer
[2023-11-19 08:00:51,328 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 08:00:51,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 08:00:51,331 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 08:00:51,335 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 08:00:51,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:46" (1/3) ...
[2023-11-19 08:00:51,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f3d471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:51, skipping insertion in model container
[2023-11-19 08:00:51,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:49" (2/3) ...
[2023-11-19 08:00:51,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f3d471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:51, skipping insertion in model container
[2023-11-19 08:00:51,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:51" (3/3) ...
[2023-11-19 08:00:51,339 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_ignore_case_harness.i
[2023-11-19 08:00:51,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 08:00:51,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 08:00:51,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 08:00:51,441 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;@6e111d51, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 08:00:51,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-19 08:00:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 64 states have (on average 1.265625) internal successors, (81), 65 states have internal predecessors, (81), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2023-11-19 08:00:51,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2023-11-19 08:00:51,468 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:51,469 INFO L195 NwaCegarLoop]: trace histogram [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]
[2023-11-19 08:00:51,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:51,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash -140199032, now seen corresponding path program 1 times
[2023-11-19 08:00:51,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:51,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384559651]
[2023-11-19 08:00:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:51,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 08:00:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 08:00:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2023-11-19 08:00:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2023-11-19 08:00:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2023-11-19 08:00:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-19 08:00:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-11-19 08:00:52,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:52,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384559651]
[2023-11-19 08:00:52,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384559651] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:52,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:52,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 08:00:52,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902310252]
[2023-11-19 08:00:52,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:52,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 08:00:52,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 08:00:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 08:00:52,142 INFO L87 Difference]: Start difference. First operand has 98 states, 64 states have (on average 1.265625) internal successors, (81), 65 states have internal predecessors, (81), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2023-11-19 08:00:52,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:00:52,180 INFO L93 Difference]: Finished difference Result 191 states and 259 transitions.
[2023-11-19 08:00:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-11-19 08:00:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48
[2023-11-19 08:00:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:00:52,192 INFO L225 Difference]: With dead ends: 191
[2023-11-19 08:00:52,193 INFO L226 Difference]: Without dead ends: 93
[2023-11-19 08:00:52,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 08:00:52,201 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:00:52,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:00:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2023-11-19 08:00:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93.
[2023-11-19 08:00:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 61 states have internal predecessors, (73), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2023-11-19 08:00:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions.
[2023-11-19 08:00:52,255 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 48
[2023-11-19 08:00:52,257 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:00:52,257 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions.
[2023-11-19 08:00:52,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2023-11-19 08:00:52,258 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions.
[2023-11-19 08:00:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2023-11-19 08:00:52,261 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:52,261 INFO L195 NwaCegarLoop]: trace histogram [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]
[2023-11-19 08:00:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 08:00:52,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:52,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:52,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1767103160, now seen corresponding path program 1 times
[2023-11-19 08:00:52,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:52,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826573732]
[2023-11-19 08:00:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:52,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 08:00:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 08:00:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2023-11-19 08:00:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2023-11-19 08:00:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2023-11-19 08:00:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-11-19 08:00:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-11-19 08:00:52,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:52,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826573732]
[2023-11-19 08:00:52,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826573732] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:52,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:52,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:00:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527806805]
[2023-11-19 08:00:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:52,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:00:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:00:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:00:52,793 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)
[2023-11-19 08:00:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:00:52,840 INFO L93 Difference]: Finished difference Result 137 states and 179 transitions.
[2023-11-19 08:00:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:52,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48
[2023-11-19 08:00:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:00:52,844 INFO L225 Difference]: With dead ends: 137
[2023-11-19 08:00:52,849 INFO L226 Difference]: Without dead ends: 93
[2023-11-19 08:00:52,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:00:52,851 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 10 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:00:52,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 339 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:00:52,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2023-11-19 08:00:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93.
[2023-11-19 08:00:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.2) internal successors, (72), 61 states have internal predecessors, (72), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2023-11-19 08:00:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions.
[2023-11-19 08:00:52,898 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 48
[2023-11-19 08:00:52,898 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:00:52,899 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions.
[2023-11-19 08:00:52,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)
[2023-11-19 08:00:52,901 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions.
[2023-11-19 08:00:52,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2023-11-19 08:00:52,907 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:52,907 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:52,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 08:00:52,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:52,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:52,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1847125036, now seen corresponding path program 1 times
[2023-11-19 08:00:52,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:52,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296041437]
[2023-11-19 08:00:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:52,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 08:00:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2023-11-19 08:00:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 08:00:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-11-19 08:00:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2023-11-19 08:00:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 08:00:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-11-19 08:00:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2023-11-19 08:00:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2023-11-19 08:00:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2023-11-19 08:00:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2023-11-19 08:00:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2023-11-19 08:00:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked.
[2023-11-19 08:00:54,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:54,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296041437]
[2023-11-19 08:00:54,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296041437] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:54,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:54,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2023-11-19 08:00:54,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279324757]
[2023-11-19 08:00:54,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:54,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-19 08:00:54,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-19 08:00:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156
[2023-11-19 08:00:54,017 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12)
[2023-11-19 08:00:54,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:00:54,792 INFO L93 Difference]: Finished difference Result 140 states and 178 transitions.
[2023-11-19 08:00:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2023-11-19 08:00:54,793 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82
[2023-11-19 08:00:54,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:00:54,795 INFO L225 Difference]: With dead ends: 140
[2023-11-19 08:00:54,796 INFO L226 Difference]: Without dead ends: 93
[2023-11-19 08:00:54,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272
[2023-11-19 08:00:54,798 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 64 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-11-19 08:00:54,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 528 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-11-19 08:00:54,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2023-11-19 08:00:54,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93.
[2023-11-19 08:00:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 61 states have internal predecessors, (71), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2023-11-19 08:00:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions.
[2023-11-19 08:00:54,826 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 82
[2023-11-19 08:00:54,828 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:00:54,829 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions.
[2023-11-19 08:00:54,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12)
[2023-11-19 08:00:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions.
[2023-11-19 08:00:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2023-11-19 08:00:54,839 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:54,840 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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]
[2023-11-19 08:00:54,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 08:00:54,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:54,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:54,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1750001547, now seen corresponding path program 1 times
[2023-11-19 08:00:54,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:54,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830595788]
[2023-11-19 08:00:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:54,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 08:00:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2023-11-19 08:00:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 08:00:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-11-19 08:00:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2023-11-19 08:00:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 08:00:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-11-19 08:00:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2023-11-19 08:00:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2023-11-19 08:00:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2023-11-19 08:00:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2023-11-19 08:00:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2023-11-19 08:00:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2023-11-19 08:00:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked.
[2023-11-19 08:00:55,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:55,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830595788]
[2023-11-19 08:00:55,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830595788] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:00:55,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195421543]
[2023-11-19 08:00:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:55,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:55,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:55,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:00:55,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 08:00:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:56,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-19 08:00:56,225 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2023-11-19 08:00:56,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 08:00:56,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195421543] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:56,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 08:00:56,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 30
[2023-11-19 08:00:56,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245365454]
[2023-11-19 08:00:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:56,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-19 08:00:56,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-19 08:00:56,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870
[2023-11-19 08:00:56,765 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 13 states have internal predecessors, (52), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13)
[2023-11-19 08:00:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:00:57,221 INFO L93 Difference]: Finished difference Result 147 states and 188 transitions.
[2023-11-19 08:00:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2023-11-19 08:00:57,222 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 13 states have internal predecessors, (52), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 91
[2023-11-19 08:00:57,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:00:57,226 INFO L225 Difference]: With dead ends: 147
[2023-11-19 08:00:57,226 INFO L226 Difference]: Without dead ends: 99
[2023-11-19 08:00:57,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=1236, Unknown=0, NotChecked=0, Total=1332
[2023-11-19 08:00:57,229 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 51 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-19 08:00:57,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1165 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-19 08:00:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2023-11-19 08:00:57,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98.
[2023-11-19 08:00:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.1875) internal successors, (76), 66 states have internal predecessors, (76), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24)
[2023-11-19 08:00:57,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions.
[2023-11-19 08:00:57,246 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 91
[2023-11-19 08:00:57,246 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:00:57,246 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions.
[2023-11-19 08:00:57,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 13 states have internal predecessors, (52), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13)
[2023-11-19 08:00:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions.
[2023-11-19 08:00:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2023-11-19 08:00:57,251 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:57,251 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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]
[2023-11-19 08:00:57,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 08:00:57,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:57,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:57,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:57,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1663232565, now seen corresponding path program 1 times
[2023-11-19 08:00:57,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:57,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220426162]
[2023-11-19 08:00:57,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:57,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 08:00:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2023-11-19 08:00:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 08:00:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-11-19 08:00:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2023-11-19 08:00:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 08:00:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-11-19 08:00:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2023-11-19 08:00:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2023-11-19 08:00:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2023-11-19 08:00:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2023-11-19 08:00:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2023-11-19 08:00:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2023-11-19 08:00:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2023-11-19 08:00:58,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:58,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220426162]
[2023-11-19 08:00:58,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220426162] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:58,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:58,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2023-11-19 08:00:58,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553778425]
[2023-11-19 08:00:58,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:58,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-19 08:00:58,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:58,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-19 08:00:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210
[2023-11-19 08:00:58,373 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13)
[2023-11-19 08:00:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:00:59,144 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions.
[2023-11-19 08:00:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-11-19 08:00:59,145 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) Word has length 91
[2023-11-19 08:00:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:00:59,147 INFO L225 Difference]: With dead ends: 132
[2023-11-19 08:00:59,147 INFO L226 Difference]: Without dead ends: 105
[2023-11-19 08:00:59,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420
[2023-11-19 08:00:59,149 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 125 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-11-19 08:00:59,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 535 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-11-19 08:00:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2023-11-19 08:00:59,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101.
[2023-11-19 08:00:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 68 states have internal predecessors, (78), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25)
[2023-11-19 08:00:59,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions.
[2023-11-19 08:00:59,164 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 91
[2023-11-19 08:00:59,165 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:00:59,165 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions.
[2023-11-19 08:00:59,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13)
[2023-11-19 08:00:59,165 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions.
[2023-11-19 08:00:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2023-11-19 08:00:59,167 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:59,167 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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]
[2023-11-19 08:00:59,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 08:00:59,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:59,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2062733139, now seen corresponding path program 1 times
[2023-11-19 08:00:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:59,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582865754]
[2023-11-19 08:00:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:59,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:59,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 08:00:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2023-11-19 08:00:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 08:00:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-11-19 08:01:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2023-11-19 08:01:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 08:01:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-11-19 08:01:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2023-11-19 08:01:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2023-11-19 08:01:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2023-11-19 08:01:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2023-11-19 08:01:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2023-11-19 08:01:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2023-11-19 08:01:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2023-11-19 08:01:00,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:01:00,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582865754]
[2023-11-19 08:01:00,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582865754] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:01:00,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:01:00,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2023-11-19 08:01:00,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384572276]
[2023-11-19 08:01:00,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:01:00,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-11-19 08:01:00,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:01:00,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-11-19 08:01:00,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182
[2023-11-19 08:01:00,188 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13)
[2023-11-19 08:01:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:01:00,877 INFO L93 Difference]: Finished difference Result 128 states and 159 transitions.
[2023-11-19 08:01:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-11-19 08:01:00,878 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 92
[2023-11-19 08:01:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:01:00,879 INFO L225 Difference]: With dead ends: 128
[2023-11-19 08:01:00,880 INFO L226 Difference]: Without dead ends: 101
[2023-11-19 08:01:00,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380
[2023-11-19 08:01:00,881 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 106 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-11-19 08:01:00,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 504 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-11-19 08:01:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-11-19 08:01:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2023-11-19 08:01:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 68 states have internal predecessors, (77), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25)
[2023-11-19 08:01:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions.
[2023-11-19 08:01:00,895 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 92
[2023-11-19 08:01:00,896 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:01:00,896 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions.
[2023-11-19 08:01:00,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13)
[2023-11-19 08:01:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions.
[2023-11-19 08:01:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2023-11-19 08:01:00,904 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:01:00,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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]
[2023-11-19 08:01:00,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 08:01:00,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:01:00,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:01:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1221822596, now seen corresponding path program 1 times
[2023-11-19 08:01:00,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:01:00,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949926073]
[2023-11-19 08:01:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:01:00,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:01:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 08:01:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2023-11-19 08:01:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 08:01:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-11-19 08:01:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2023-11-19 08:01:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 08:01:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-11-19 08:01:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2023-11-19 08:01:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2023-11-19 08:01:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2023-11-19 08:01:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2023-11-19 08:01:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2023-11-19 08:01:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2023-11-19 08:01:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2023-11-19 08:01:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2023-11-19 08:01:02,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:01:02,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949926073]
[2023-11-19 08:01:02,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949926073] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:01:02,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682223425]
[2023-11-19 08:01:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:01:02,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:01:02,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:01:02,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:01:02,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 08:01:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:01:02,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-11-19 08:01:02,406 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:01:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked.
[2023-11-19 08:01:02,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 08:01:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682223425] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:01:02,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 08:01:02,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [18] total 32
[2023-11-19 08:01:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547468051]
[2023-11-19 08:01:02,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:01:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-19 08:01:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:01:02,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-19 08:01:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992
[2023-11-19 08:01:02,871 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 14 states have internal predecessors, (56), 6 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14)
[2023-11-19 08:01:03,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:01:03,307 INFO L93 Difference]: Finished difference Result 137 states and 170 transitions.
[2023-11-19 08:01:03,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2023-11-19 08:01:03,308 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 14 states have internal predecessors, (56), 6 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 100
[2023-11-19 08:01:03,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:01:03,309 INFO L225 Difference]: With dead ends: 137
[2023-11-19 08:01:03,309 INFO L226 Difference]: Without dead ends: 110
[2023-11-19 08:01:03,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=1431, Unknown=0, NotChecked=0, Total=1560
[2023-11-19 08:01:03,312 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 50 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-19 08:01:03,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1253 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-19 08:01:03,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2023-11-19 08:01:03,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 102.
[2023-11-19 08:01:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.164179104477612) internal successors, (78), 68 states have internal predecessors, (78), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 24 states have call predecessors, (25), 23 states have call successors, (25)
[2023-11-19 08:01:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 127 transitions.
[2023-11-19 08:01:03,325 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 127 transitions. Word has length 100
[2023-11-19 08:01:03,325 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:01:03,325 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 127 transitions.
[2023-11-19 08:01:03,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 14 states have internal predecessors, (56), 6 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14)
[2023-11-19 08:01:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 127 transitions.
[2023-11-19 08:01:03,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2023-11-19 08:01:03,327 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:01:03,327 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:01:03,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-19 08:01:03,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbcfc8c-e447-4c54-b433-346ab79fa419/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:01:03,538 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:01:03,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:01:03,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1283862210, now seen corresponding path program 1 times
[2023-11-19 08:01:03,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:01:03,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418285900]
[2023-11-19 08:01:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:01:03,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:01:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat